LSG SERIESINSTRUCTION MANUALELECTRONIC LOADLSG SERIES
LSG-175
LSG-350
LSG-1050
LSG-2100S

LSG-175H
LSG-350H
LSG-1050H
LSG-2100SH

B71-0488-11

CONTENTS
USING THE PRODUCT SAFELY ························································ Ⅰ-Ⅳ

1. GETTING STARTED ............................................................... 1
1-1. LSG Series Introduction ...................................................... 1
1-1-1. Model Line Up ........................................................................................... 1
1-1-2. Main Features ........................................................................................... 2

1-2. Accessories ........................................................................ 3
1-2-1. Accessories .............................................................................................. 3
1-2-2. Package Contents .................................................................................... 4

1-3. Appearance ......................................................................... 5
1-3-1. Front Panel ............................................................................................... 5
1-3-2. Rear Panel ................................................................................................ 9
1-3-3. Display .................................................................................................... 12

1-4. First Time Use Instructions ................................................ 13
1-4-1. Rack Mount Kits ...................................................................................... 13
1-4-2. Power Up and Self-Test .......................................................................... 14
1-4-3. Load Default Settings.............................................................................. 14
1-4-4. Setting the Date and Time ...................................................................... 15
1-4-5. Load Wiring............................................................................................. 16
1-4-6. Load Wire Connections........................................................................... 18
1-4-7. Using the Front Panel Input Terminals.................................................... 19
1-4-8. Using the Rear Panel Input Terminals .................................................... 20
1-4-9. Using the Terminal Cover (PEL -011) ..................................................... 21
1-4-10. Using the Terminal Cover (PEL -013) ................................................... 23
1-4-11. Using the Terminal Cover ..................................................................... 24
1-4-12. Using the Monitor out Cover ................................................................. 24
1-4-13. Remote Sense ...................................................................................... 25
1-4-14. Firmware Update .................................................................................. 26
1-4-15. Conventions .......................................................................................... 27
1-4-16. Help Menu ............................................................................................ 32

2. OPERATION ........................................................................ 33
2-1. Basic Operation ................................................................ 33
2-1-1. CC Mode................................................................................................. 33
2-1-2. CR Mode................................................................................................. 35
2-1-3. CR Units ................................................................................................. 36
2-1-4. CV Mode ................................................................................................. 37
2-1-5. CP Mode ................................................................................................. 38
2-1-6. +CV Mode ............................................................................................... 39
2-1-7. Turning on the Load ................................................................................ 40
2-1-8. Shorting the Load ................................................................................... 41
2-1-9. Safety Short ............................................................................................ 42
2-1-10. Short Key Configuration ........................................................................ 42
2-1-11. Short Function Enable/Disable ............................................................. 42
2-1-12. Locking the Front Panel Controls .......................................................... 43

2-2. Basic Configuration ........................................................... 44

2-2-1. Select the Switching Function ................................................................. 44
2-2-2. Select the Display Units for Dynamic Mode Levels ................................. 47
2-2-3. Select the Switching Time Configuration for Dynamic Mode .................. 48
2-2-4. Slew Rate ............................................................................................... 49
2-2-5. CV, +CV Mode Response Speed ........................................................... 50
2-2-6. CC, CR and CP Mode Response Speed ................................................ 51

2-3. Advanced Configuration Settings ....................................... 52
2-3-1. Soft Start Setting ..................................................................................... 52
2-3-2. Von Voltage Settings .............................................................................. 53
2-3-2-1. Von Voltage Level ............................................................................ 53
2-3-2-2. Von Voltage Delay ............................................................................ 53
2-3-2-3. Von Voltage Latch ............................................................................ 54
2-3-3. Timer Functions ...................................................................................... 55
2-3-3-1. Count Time ....................................................................................... 55
2-3-3-2. Cut Off Time ..................................................................................... 55
2-3-4. Auto Load Configuration ......................................................................... 56
2-3-5. Load Off (Mode) and Load Off (Range) .................................................. 56

2-4. Step Resolution Configuration ........................................... 57
2-4-1. Cursor Mode Configuration ..................................................................... 57
2-4-2. Step Mode Configuration ........................................................................ 58

2-5. Protection Settings ............................................................ 59
2-5-1. OCP ........................................................................................................ 59
2-5-2. OPP ........................................................................................................ 60
2-5-3. UVP ........................................................................................................ 61
2-5-4. UVP Ring Time ....................................................................................... 62
2-5-5. OVP ........................................................................................................ 63
2-5-6. UnReg..................................................................................................... 64
2-5-7. Para ........................................................................................................ 64
2-5-8. RVP ........................................................................................................ 65

2-6. System Settings ................................................................ 66
2-6-1. Input control settings ............................................................................... 66
2-6-2. Sound Settings ....................................................................................... 66
2-6-2-1. Speaker Settings .............................................................................. 66
2-6-2-2. Alarm Tone Settings ......................................................................... 67
2-6-3. Display Settings ...................................................................................... 67
2-6-4. Language Settings .................................................................................. 67
2-6-5. Input / Output Trigger Settings ................................................................ 67
2-6-5-1. Trigger in Delay ................................................................................ 67
2-6-5-2. Trigger Out Width ............................................................................. 68
2-6-6. Measure Average ................................................................................... 68
2-6-7. VP Load Off ............................................................................................ 68

2-7. Go-NoGo .......................................................................... 69
2-7-1. Setting the Go-NoGo Limits .................................................................... 69
2-7-2. Running a Go-NoGo Test ....................................................................... 70

2-8. Save / Recall .................................................................... 71
2-8-1. File Structure .......................................................................................... 71
2-8-2. File Types ............................................................................................... 72

2-8-3. Saving Files to Internal Memory ............................................................. 73
2-8-4. Saving Files to USB Memory .................................................................. 74
2-8-5. Recalling Files from Internal Memory...................................................... 75
2-8-6. Recalling Files from USB Memory .......................................................... 76
2-8-7. Recall Memory Safety Setting ................................................................. 78
2-8-8. File Utility ................................................................................................ 78
2-8-9. Preset ..................................................................................................... 79
2-8-9-1. Quick Preset Save ............................................................................ 79
2-8-9-2. Quick Preset Recall .......................................................................... 79
2-8-10. Default Settings .................................................................................... 80
2-8-10-1. Factory Default Settings ................................................................. 80
2-8-10-2. User’s Default Setting ..................................................................... 80

3. Function MENU .................................................................... 81
3-1. Function Menu Overview ................................................... 81
3-1-1. Select a Function .................................................................................... 81
3-1-2. Turning on the Load with the Selected Function ..................................... 82
3-1-3. Complete Ring Time ............................................................................... 83
3-1-4. NSEQ Timer ........................................................................................... 84

3-2. Program function ............................................................... 85
3-2-1. Program function Overview..................................................................... 85
3-2-2. Create a Program ................................................................................... 87
3-2-3. Create a Program Chain ......................................................................... 89
3-2-4. Running the Program function ................................................................ 90

3-3. Sequence function ............................................................ 91
3-3-1. Normal Sequence function Overview ...................................................... 91
3-3-2. Timing Edit Configuration ........................................................................ 95
3-3-3. Data Edit Configuration ........................................................................... 96
3-3-4. Running a Normal Sequence function .................................................... 97
3-3-5. Fast Sequence function Overview .......................................................... 98
3-3-6. Timing Edit Configuration ...................................................................... 102
3-3-7. Data Edit Configuration ......................................................................... 103
3-3-8. Running a Fast Sequence function ....................................................... 105

3-4. OCP Test function ............................................................106
3-4-1. OCP Test function setting parameters .................................................. 107
3-4-2. OCP Test function setting ..................................................................... 108
3-4-3. Running a OCP Test function ............................................................... 109
3-4-4. Results of OCP Test function ................................................................ 110

3-5. OPP Test function ............................................................ 113
3-5-1. OPP Test function setting parameters .................................................. 114
3-5-2. OPP Test function setting ..................................................................... 115
3-5-3. Running a OPP Test function ............................................................... 116
3-5-4. Results of OPP Test function ................................................................ 117

3-6. BATT Test function ...........................................................120
3-6-1. BATT Test function setting parameters................................................. 122
3-6-2. BATT Test function setting .................................................................... 123
3-6-3. Running a BATT Test function .............................................................. 124
3-6-4. Results of BATT Test function .............................................................. 124

3-6-5. Save the Data for BATT Test function .................................................. 126

3-7. MPPT ..............................................................................127
3-7-1. Edit Tracking of MPPT function ............................................................ 130
3-7-2. Auto Load of MPPT function ................................................................. 131
3-7-3. Data file of test result ............................................................................ 135

4. EXTERNAL CONTROL ........................................................138
4-1. Analog Control .................................................................138
4-1-1. The ports J1 /J3 Overview .................................................................... 138
4-1-1-1. The frame control ports J1 ............................................................. 138
4-1-1-2. The ports J3.................................................................................... 139
4-1-2. External Voltage Control - Overview ..................................................... 140
4-1-3. External Voltage Control – Operation ................................................... 141
4-1-4. Adjust offset and full scale with variable resistor ................................... 143
4-1-5. External Resistance Control - Overview ............................................... 144
4-1-6. External Resistance Control – Operation .............................................. 145
4-1-7. Adjust offset and full scale with variable resistor ................................... 147
4-1-8. Turning the Load On using External Control ......................................... 148
4-1-9. Load On/Off Status ............................................................................... 149
4-1-10. External Control of the Range ............................................................. 149
4-1-11. I Range Status .................................................................................... 150
4-1-12. External Trigger Signal ....................................................................... 150
4-1-13. External Alarm input............................................................................ 151
4-1-14. Alarm Status ....................................................................................... 151
4-1-15. Short Control ....................................................................................... 152
4-1-16. Monitor Signal Output ......................................................................... 153
4-1-16-1. Trigger Signal Output ................................................................... 153
4-1-16-2. Current Monitor Output ................................................................. 153
4-1-16-3. Voltage Monitor Output ................................................................. 154

4-2. Parallel Operation ............................................................155
4-2-1. Capacity of DC electronic loads ............................................................ 155
4-2-2. Connection............................................................................................ 156
4-2-3. Configuration ........................................................................................ 157
4-2-4. Turning the Load On ............................................................................. 158
4-2-5. Disable Parallel operation ..................................................................... 159
4-2-6. Connection using option plate ............................................................... 159

5. REMOTE CONTROL ...........................................................160
5-1. Interface Configuration .....................................................160
5-1-1. Configure to USB Remote Interface...................................................... 160
5-1-2. Configure RS-232C............................................................................... 160
5-1-3. Configure GP-IB Interface..................................................................... 161
5-1-4. Configure LAN Interface ....................................................................... 162
5-1-5. RS-232C/USB Remote Control Function Check ................................... 163
5-1-6. Using RealTerm to Establish a Remote Connection ............................. 163
5-1-7. GP-IB Function Check .......................................................................... 166
5-1-8. LAN Function Check (HTTP) ................................................................ 167
5-1-9. LAN Function Check(Socket)................................................................ 168

6. FAQ ....................................................................................171

7. APPENDIX ..........................................................................172
7-1. Replacing the Dust Filter ..................................................172
7-2. GP-IB/LAN Installation .....................................................173
7-3. Default Settings ...............................................................174
7-4. Frame Control Connector Contacts ...................................176
7-5. Operating Mode Description .............................................181
7-5-1. CC Mode............................................................................................... 181
7-5-2. CR Mode............................................................................................... 182
7-5-3. CP Mode ............................................................................................... 183
7-5-4. CV Mode ............................................................................................... 184

7-6. LSG Operating Area .........................................................184
7-6-1. LSG-175 ............................................................................................... 184
7-6-2. LSG-350 ............................................................................................... 185
7-6-3. LSG-1050 ............................................................................................. 186
7-6-4. LSG-2100S ........................................................................................... 187

7-7. LSG-H Operating Area .....................................................188
7-7-1. LSG-175H ............................................................................................. 188
7-7-2. LSG-350H ............................................................................................. 189
7-7-3. LSG-1050H ........................................................................................... 190
7-7-4. LSG-2100H ........................................................................................... 191

7-8. LSG Series Specifications ................................................192
7-8-1. Rating ................................................................................................... 192
7-8-2. Rating(LSG-2100S) .............................................................................. 192
7-8-3. CC Mode............................................................................................... 192
7-8-4. CR Mode............................................................................................... 193
7-8-5. CV Mode ............................................................................................... 194
7-8-6. CP Mode ............................................................................................... 194
7-8-7. Slew Rate ............................................................................................. 195
7-8-8. Meter..................................................................................................... 195
7-8-9. Dynamic Mode ...................................................................................... 196
7-8-10. Soft Start ............................................................................................. 198
7-8-11. Remote Sensing ................................................................................. 198
7-8-12. Protection Function ............................................................................. 198

7-9. LSG-H Series Specifications .............................................200
7-9-1. Rating (Master) ..................................................................................... 200
7-9-2. Rating (Booster) .................................................................................... 200
7-9-3. CC Mode............................................................................................... 201
7-9-4. CR Mode............................................................................................... 202
7-9-5. CV Mode ............................................................................................... 203
7-9-6. CP Mode ............................................................................................... 203
7-9-7. Slew Rate ............................................................................................. 204
7-9-8. Meter..................................................................................................... 205
7-9-9. Dynamic Mode ...................................................................................... 205
7-9-10. Soft Start ............................................................................................. 208
7-9-11. Remote Sensing ................................................................................. 208
7-9-12. Protection Function ............................................................................. 208

7-10. LSG/LSG-H Specifications ..............................................209
7-10-1. Sequence............................................................................................ 209
7-10-2. Other ................................................................................................... 209
7-10-3. Analog External Control ...................................................................... 210
7-10-4. Front Panel BNC Connector ............................................................... 211
7-10-5. General ............................................................................................... 211

7-11. Dimensions ....................................................................213
7-11-1. LSG-175/ LSG-175H/ LSG-350/ LSG-350H ....................................... 213
7-11-2. LSG-1050 / LSG-1050H...................................................................... 214
7-11-3. LSG-2100S/SH ................................................................................... 214

The latest version of the instruction manual is posted on our website(https://www.texio.co.jp/download/).
In order to be environmentally friendly and reduce waste, we are gradually
discontinuing the use of paper or CD manuals that come with our products.
Even if there is a description in the instruction manual that the product isincluded, it may not be included.

■The corresponding firmware versions in this manual are as follows.
LSG Series
LSG-H Series：Ver1.32 or higher：Ver1.08 or higher

USING THE PRODUCT SAFELY■ Preface
To use the product safely, read this instruction manual to the end. Before
using this product, understand how to correctly use it.
If you read this manual but you do not understand how to use it, ask us or
your local dealer. After you read this manual, save it so that you can read it
anytime as required.

■ Notes on reading this instruction manual◆ The contents of this instruction manual include technical terms in part oftheir explanation. If you do not understand those terms, do not hesitate to
ask us or your local dealer.

■ Pictorial indication and warning character indication
This instruction manual and product show the warning and caution items
required to safely use the product. The following pictorial indication andwarning character indication are provided.
<Pictorial indication>
Some part of this product or the instruction manual
may showThis pictorial indication. In this case, if the product isincorrectly used in that part, a serious danger may bebrought about on the user's body or the product.
To use the part with this pictorial indication, be sure torefer to this instruction manual.
<Warning characterIndication>

WARNINGCAUTION

If you use the product, ignoring this indication, you
may get killed or seriously injured. This indicationshows that the warning item to avoid the danger isprovided.
If you incorrectly use the product, ignoring thisindication, you may get slightly injured or the productmay be damaged. This indication shows that thecaution item to avoid the danger is provided.

I

USING THE PRODUCT SAFELYWARNING■ Do not remove the product's covers and panels
Never remove the product's covers and panels for any purpose.
Otherwise, the user's electric shock or a fire may be incurred.

■ Warning on using the product
The warning items given below are to avoid danger to the user's body and life
and avoid the damage and deterioration of the product.
Use the product, observing the following warning and caution items.

■ Warning items on power supply● Power supply voltage
As the rated power supply voltage of the product, the range from 100 to
240 VAC can be used without being switched.
● Power cord
Important: The attached power cord set can be used for this device
only.
● Protection fuse
If an input protection fuse is blown, the product does not operate. When thefuse is blown, the user can replace it. However, replace it correctly, observing
the warning and caution items that are provided in the section of the
instruction manual where the fuse replacement is explained. If the fuse isincorrectly replaced, a fire may occur.
● Changing the power supply voltage

The rated power supply voltage cannot be changed. Use theproduct only at the rated power supply voltage indicated on the
product. Otherwise, a fire may occur. The product's rated power
supply voltage is from 100 to 240 VAC. Use the product in thisrange. (For use at a voltage higher than 125 VAC, Pleaseconfirm the voltage ratings of the power cord.)■ Warning item on grounding
The product has the GND terminal on the panel surface to protect the userfrom electric shock and protect the product. Be sure to ground the product tosafely use it.
IIUSING THE PRODUCT SAFELYWARNING■ Warning item on installation environment● Operating temperature
Use the product within the operating temperature indicated in the ratingcolumn. If the product is used with the vents of the product blocked or inhigh ambient temperatures, a fire may occur.
● Operating humidity
Use the product within the operating humidity indicated in the ratingcolumn. Watch out for condensation by a sharp humidity change such astransfer to a room with a different humidity. Also, do not operate theproduct with wet hands. Otherwise, an electric shock or fire may occur.
● Use in a gas
Use in and around a place where an inflammable or explosive gas or
steam is generated or stored may result in an explosion and fire. Do not
operate the product in such an environment.
Also, use in and around a place where a corrosive gas is generated or
spreading causes a serious damage to the product. Do not use theproduct in such an environment.
● Do not let foreign matter in
Do not insert metal and flammable materials into the product fromits vent and spill water on it. Otherwise, an electric
shock and fire may occur.

■ Warning item on abnormality while in use
If smoke or fire is generated from the product while in use, stop using the
product, turn off the switch, and remove the power cord plug from the outlet.
After confirming that no other devices catch fire, call the company or eachsales office.

■ Front Panel
Please do not lift up the product, while touching the front grille.

III

USING THE PRODUCT SAFELYCAUTION■ Input/output terminal
Maximum input to the input terminals is specified to prevent the productfrom being damaged. Do not supply input, exceeding the specifications
that are indicated in the "Rating" or "Caution on use" column in the
instruction manual of the product. Otherwise, a product failure is caused.
Also, do not supply power to the output terminals from the outside.
Otherwise, a product failure is caused.

■ When the product is left unused for a long time
Be sure to remove the power plug from the outlet.
(Calibration)
Although the performance and specifications of the product are checked
under strict quality control during shipment from the factory, they may aging
rate because of aging rate in its parts. It is recommended to periodicallycalibrate the product so that it is used with its performance and specifications
stable. For consultation about the product calibration, call the dealer or thecompany or each sales office where you bought the product.
(Daily maintenance)
When you clean off the dirt of the product covers, panels, and knobs, avoid
solvents such as thinner and benzene. Otherwise, paint may peel off or the
resin surface may be affected.
To wipe off the covers, panels, and knobs, use a soft cloth with neutral
detergent in it. During cleaning, be careful that water, detergents, and otherforeign matters do not get into the product.
If a liquid or metal gets into the product, an electric shock and fire are caused.
During cleaning, remove the power cord plug from the outlet.
Use the product correctly and safely, observing the above warning and caution
items. Because the instruction manual indicates caution items even in
individual items, observe those caution items to correctly use the product.
If you have questions or comments about the content of the instruction manual,
ask us or E-Mail us.

IV1. GETTING STARTEDThis chapter provides a brief overview of the LSG Series, the package
contents, instructions for first time use and an introduction to the front panel,rear panel and GUI.

1-1. LSG Series Introduction
The LSG Series is a family of high-performance DC electronic loads positioned
to test a wide range of different power sources. The DC electronic loads are
fully programmable to simulate anything from basic static loads to complex
dynamic loads. With the ability to operate independently or in parallel, the LSG
Series is extremely robust and capable of molding to any test environment.
Please note that throughout this manual the term “LSG Series” refers to any
one of the models in the series lineup, unless specifically stated otherwise.

1-1-1. Model Line Up
There are a total of 3 DC electronic load models and 1 booster pack model.
Model
Operating Voltage (DC)
Current
Power
LSG-175
1.5V~150V
35A
175W
LSG-350
1.5V~150V
70A
350W
LSG-1050
1.5V~150V
210A
1050W
LSG-175H
5V~800V
8.75A
175W
LSG-350H
5V~800V
17.5A
350W
LSG-1050H
5V~800V
52.5A
1050W
Booster Model
LSG-2100S
LSG-2100SH

Operating Voltage (DC)
1.5V~150V
5V~800V

1

Current
420A
105A

Power
2100W
2100W

1-1-2. Main Features
PerformanceHigh resolution – 16 bit
High capacity when used in parallel / booster:
5250W, 262.5A (LSG-1050H x 5)
9450W, 472.5A (LSG-1050H + LSG-2100SH x 4)

FeaturesInterface

5250W, 1050A (LSG-1050 x 5)/
9450W, 1890A (LSG-1050 + LSG-2100S x 4)
7 operating modes:
CC, CV, CR, CP, CC+CV, CR+CV, CP+CV
Independent and parallel operation
Fully programmable with normal and fast
sequences
Soft start
Dynamic mode
OCP, OVP and other protection features
Remote sense
Integrated meter
Rack-mountable
USB, RS-232C, GP-IB, LAN
External voltage or resistance control
Front panel trigger out BNC
Front panel voltage/current monitoring BNC
Rea panel voltage/current monitoring
Analog external control2

1-2. Accessories
1-2-1. Accessories
Standard
Accessories

Part number

Description

Region dependent
PEL-011

Power cord
Load input terminal Cover x1
M3 Screw x1

M3
screw
PEL-012

Terminal fittings: 2 sets of bolts/
nuts /springs /washers (type: M8)
Terminal cover x2(Either one)
M8 x 20
Spring washer
Flat washer

61SF-062104N1
PEL-013(LSG-2100S/SH only)

M8 nutFront terminal washers. (M6) x2
Flexible terminal cover:Velcrofasteners x4
Rubbersheeting x2

PEL-014

Frame control connector with strain
relief x2.
Strain relief

Connector
GTL-255(LSG-2100S/SH)

Frame Link Cable3

Optional
Accessories

Part number

Description

GRA-413E

GTL-248
GTL-246
PEL-010
PEL-004
PEL-018

Rack mount bracket for booster LSG2100SH for EIA
Rack mount bracket for booster LSG2100SH for JIS
Rack mount frame for LSG-175H,
LSG-350H, LSG-1050H /EIA
Rack mount frame for LSG-175H,
LSG-350H, LSG-1050H /JIS
GP-IB cable, 2.0m
USB cable, Type A - Type B
Dust Filter
GPIB option
LAN option

Part number
PEL-005
PEL-006
PEL-007
PEL-008
PEL-009

Description
Connect Cu Plate
Connect Cu Plate
Connect Cu Plate
Connect Cu Plate
Connect Cu Plate

GRA-413J
GRA-414-E
GRA-414-J

Options

1-2-2. Package Contents
Check the contents before using the instrument.
Opening the box

Contents(single unit)

Main unit
Terminal fittings

4Power cord x1(region dependent)

1-3. Appearance
1-3-1. Front Panel
LSG-175/LSG-175H / LSG-350/LSG-350H
Air inlet

Preset key LCD Display

Function keys

Power key
Main/Local
FUNC/File

Local

Main

Help/Utility

File
FUNC
Utility

Short

Help
Short

P7

Preset

7
P4

Shift

175W
5 – 800V
0 – 8.75A

Load
P8

8
P5

V MON OUT

I MON OUT

Off

9
P6

4

5

6

P3

P2

P1

1

2

3

P0

CAL .

0

Load On/Off

On/

P9

Scroll wheel

Clear

Number pad

Enter

TRIG OUTEnter key
Input V MON I MON TRIGOUT OUT
terminals OUT

USB Port

Clear key
Shift key

LSG-1050/LSG-1050H
Local

Main
File

FUNC
Utility

Help

Short

P7

Preset

7
P4

Shift

4
P1

1050W
5 - 800V
0 – 52.5A
I MON OUT

Load On/
Off

P9

8

9

P5

P6

5

6

P2

P3

1

2

3

P0

CAL.

Lock

0
V MON OUT

P8

Clear

TRIG OUT

LSG-2100S/SH Booster Pack

LINK

5

STBY

Enter

Name explanation
Air Inlet(Front grille)
LCD display
Functionkeys
ON/STBY

Main/Local

The air inlet has a removable dust filter.
Please do not lift up the product, while touching the front
grille.
3.5-inch LCD display
The function keys directly correspond to the soft menus
at the bottom of the display.
Turns the unit on or puts the unit into
standby mode. Use the power switch
on the rear panel to turn the unit off.

Shift

FUNC/File

Help

Shift

Short

Load on/off

>

Help:
Access the help menu.
Utility
Utility (Shift > Help): Accessthe utility menu.
Help

>

FUNC

Shift

Help/Utility>

Main: Sets the operating mode: CC,
CV, CR, CP mode.
Local
Local (Shift > Main):Puts the instrument back intoMain
local mode from remote
mode.
FUNC: Sets the program function,
sequence function or other special
functions.
File
File (Shift > FUNC):
Accesses the file system.
FUNC

Main

Pressing the Short key will simulate
shorting the input terminals.
The Short key will be lit when active.
Turns the load on or off.
The Load On/Off key will be lit when
active.
Use the scroll wheel to navigate themenu system.
Pushing the scroll wheel will toggle
between coarse and fine adjustment,
or Select digit.
Press the Enter key to selecthighlighted menu items.

Short

Load On/OffScroll wheel

Enter

Enter

6

Clear/Lock

Clear: Clears the current parametervalues.
Lock (Shift + Clear): Locks the front
panel keys and selector knob.

Lock

Clear

Number pad

P7

P8

P9

7

8

9

P4

P5

P6

4

5

6

P1

P2

P3

1

2

3

P0

CAL.

Lock

0

Shift
PresetUSB Port

Clear

Number pad: Used to enter numerical values.
P0~P9 (Preset + Number keys):
Loads one of 10 preset settings.
Shift: Used in conjunction with otherShiftkeys to select secondary functions.
Used in conjunction with the number
Preset
pad to save or load preset settings P0
to P9.
USB A port. Used for save and recall
functions.

Front panel
input terminals
175W
5 - 800V
0 – 8.75A

Negative terminal.

7

Positive terminal.

IMON Out

Current monitor BNC terminal: Output
connector used to monitor the current
by outputting a voltage.
An output voltage of 10V corresponds
to the full scale current for the H and
L ranges. 1V corresponds to the fullscale current in the M range.
Voltage monitor BNC terminal:
Output connector used to monitor thevoltage by outputting a voltage. An
output voltage of 8V corresponds tothe full scale voltage.
Trigger out BNC terminal:
Outputs a pulse signal during
sequence or dynamic operation. The
trigger signal has a 4.5V output with apulse width of a least 2us and an
impedance of 500Ω.
The LINK and STBY indicators
indicate when the booster pack isproperly connected and when the
power has been turned on,
respectively.

I MON OUTVMON Out(LSG-175H/350H/1050H)V MON OUT

TRIG OUT

TRIG OUT

LINK/STBY
Indicator(LSG-2100H)

LINK STBY8

1-3-2. Rear Panel
LSG-175/LSG-175H / LSG-350/LSG-350H
Monitor Out ports
J3

Frame control ports
J1, J2

Remote sense
input

Rear panel
input

Variable
Resistor

RS232C port
USB port
USB device port

Power socket
and switch

GP-IB port

LSG-1050/LSG-1050H

LSG-2100S/SH Booster Pack

9

ExhaustfanName explanation
RS-232C Port
GP-IB
USB B

The USB B, RS-232C and GP-IB port are used for remotecontrol.
LAN

USB B port
Frame control
ports
J1, J2

RS-232C
9 pin D-SUB

GP-IB
24 pinLAN
RJ-45

FRAME CONT
J1

J2

J1: The J1 is assigned to external control.
J2: The J2 is used for parallel operation control.
Monitor Out
ports J3
LSG-175H/LSG350H/LSG1050H

J3: The J3 connector is assigned to current and voltage
monitor out.

Variable Resistor
LSG-175H/LSG350H/LSG1050H

Exhaust fan

The variable resistors are used to adjust the full scale andoffset setting for the input value of the external control
sources such as voltage or resistance.
The exhaust fan is used to expel the heat from the unit.
Please ensure there is at least 20cm distance between any
object and the fan.

10

Rear Panel Input
terminals

Rear Panel Input Terminals. Electrically connected to
the front panel input terminals. Accepts M8 bolts or
M4/M3 sized screws. See page 20 (1-4-8. Using the Rear
Panel Input Terminals) for connection details.
Remote Sensing
Terminals

Power Socket

Sensing terminals for remote sense. See page 25 (1-411.Remote Sense).
Accepts M3 sized screws.
Power Socket:
100~120V, 200~240V
47~63Hz.

Power Switch

Turns the unit on/off.

USB A

USB A Slave port. USB 1.1/2.0

11

1-3-3. Display
Mainframe status panel

Date
01/Oct/2017

Measurementarea

settingarea

RS232 LOAD

0.00 V
0.0000 A

0. 00W

CC A ValueCC B Value
SlewRate

0. 0000 A
0. 0000 A
140 . 00 mA/ us

Mode
CC

V Range
H800V

I Range
H8.75A

Function
StaticFine
A Value

Operation
statuspanel

ConfigureSoft menus

Setting area
Measurement
area
Date
Mainframe
status panel

Operation Status
Panel
Soft menus

The setting area is used to display and edit the settings
for the current mode / function.
Displays the voltage, current and power values.
Displays the date
The mainframe status panel displays the status of theload, remote control and short function.
When an icon is green it indicates that the function is off.
When the icon is orange, the function is on.
This status panel is used to display the status of thecurrent mode.
The soft menus are used to select different functions or
parameters.

12

1-4. First Time Use Instructions
Use the procedures below when first using the LSG Series to install the rack
mount kit, power up the instrument, set the internal clock, restore the factory
default settings and check the firmware version. Lastly, the Conventions
section will introduce you to the basic operating conventions used throughout
the user manual.

1-4-1. Rack Mount Kits
Description

The LSG Series has a number of rack mount options for
installation. The GRA-413 rack mounts are suitable forthe LSG-2100SH booster pack. The GRA-414 rack
mounts are capable of holding 1x LSG-1050H or 2x LSG175H/LSG-350H units.
For installation details, please see the GRA-413 andGRA-414 Rack Mount Assembly Manual.
Please see your distributor for which rack mount issuitable for your application.

EIA rack:128 mm
JIS rack:149 mm

(149)
128

GRA-413-J
GRA-413-E( LSG-2100S/
LSG-2100SH)

53

48
2.6

2.5

GRA-414-E
GRA-414-J

132

EIA rack:132 mm
JIS rack:149 mm(149)

LSG-175/175H、/LSG-350/350H、LSG-1050/1050H

47

7.6

13

2 .5
38

1-4-2. Power Up and Self-Test
Operation

1.
2.

3.

Insert the AC power cord into the power socket.
Turn the external power switchon.
(O → —)
If the unit doesn’t turn on, press the On/Standby key
for a second.
The ON/STBY key will go from standby (red) to on(green).

4.

Note

The unit will show the splash screen and then load thesettings from when the unit was last powered down.
5. To turn off the power, press the ON/STBY key again
for a second.
If the LSG Series fails to start up properly or does not turnon, please see your local distributor.

1-4-3. Load Default Settings
Description

When first using the LSG Series, recall the factory default
settings to ensure the unit is in a known state. See page174 (7-3. Default Settings) for a list of the default settings.
File

Operation> FUNC

Shift
Press
in order,press Media/Default [F1] or Factory Default [F2] to set.
RS232 LOAD

01/Oct/2017

CC

Load Default Setup

8.75A
800V
StaticWarning!!!
Pressing F2 Again will
Recall The Default Settings!
Media
Default

Factory
Default

14

Save

RecallA Value1-4-4. Setting the Date and Time
Description

The date and time settings are used to time-stamp files
when saving files.
The date and time is shown on top of the LCD display.
Utility

Operation
Press

Shift

>

Help

> Time Set [F4] in order,and set the date and time.
Settings: Month, Day, Year, Hour, Minute
RS232 LOAD

01/Oct/2017

Date

Date/Time
Month
Day
Year
Hour
MinuteSystem
Info

Load

15

10
1
2017
9
0
Interface

Time Set

Other1-4-5. Load Wiring
Wire Gauge
considerations

Before connecting the unit to a power source, the wire
gauge must be taken into account. Load wires must belarge enough to resist overheating when a short-circuit
condition occurs as well as to maintain a good regulation.
The size, polarity and length of a wire are all factors indetermining if a wire will withstand short circuiting.
Wires that are selected must be large enough to withstanda short circuit and limit voltage drops to no more than 2V
per wire. Use the table below to help make a suitableselection.
AWG
Conduct orOhms / km Max amps for
Gauge
Diameter mm
chassis wiring
0000
11.6840.16072
380000
10.40380.2027328
00
9.26592
0.25551283
08.25246
0.32242245
1
7.348220.40639211
2
6.543040.51266181
35.82676
0.64616158
45.189220.81508135
54.62026
1.02762118
64.11481.29593101
73.665221.634189
83.26392.060573
92.90576
2.5980964
10
2.58826
3.2763955
112.30378
4.132847
122.05232
5.2086441
131.82886.5698435
141.628148.282
32
151.45034
10.4435228
161.29032
13.1724822
171.15062
16.60992
19
18
1.02362
20.942816190.9118626.40728
14200.812833.29211
210.723941.9849

16

Load Line
InductanceConsiderations

When using the LSG Series load generator, voltage dropand voltage generated due to load line inductance andcurrent change must be taken into account. Extremechanges in voltage may exceed the minimum or maximum
voltage limits. Exceeding the maximum voltage limit may
damage the LSG Series.
To determine the voltage generated, the following
equation can be used.
E = L x (∆ I / ∆ T)
E= voltage generated
L=load line inductance∆ I= change of current (A)∆ T= time (us)Load line inductance (L) can be approximated as 1uH per
1 meter of wire. (∆ I / ∆ T) is the slew rate in A/us.
Current∆I
Time∆T
Voltage
E
Min. VTime

The diagram above shows how changes in current canaffect voltage.

17

Limiting Loadline inductance
Method 1

Load line inductance can be reduced in two methods.
Ensure load wires are as short as possible and twist thepositive and negative load wires together.
“Twisted pair” will be shown on any connection diagram
where the load wires should be twisted together.
Power
DUT
source++Electronic
Load+

Electronic
Load

Twisted
pair

Power
DUT
sourceMethod 2+

Current change can be limited by limiting the slew rate or
response speed when switching in CR and CC mode.

1-4-6. Load Wire Connections
Description

Connection

The LSG Series has input terminals on both the front andrear panels.
Follow the procedures below for all load connections.
Please adhere to the following precautions to ensure yoursafety and to protect the unit from damage.
When connecting the LSG Series to the power source,
make sure that the polarity of the connection between the
DUT and the unit matches.
Ensure that the maximum input voltage is not exceeded.
The maximum input voltage is 800 volts.

+

+

Power
Power
DUT
sourcesourceCautionWarning
Warning
Warning

Electronic
Load

If the polarity to the input terminals is reversed, thereverse voltage protection function is tripped. The
reverse voltage protection function is tripped whenreverse voltages greater than about -0.3V are detected.
Do not touch any of the input terminals when the voltage
is applied to an input terminal.
Connecting the input terminals to the wrong polarity candamage the power source or the LSG Series.
The front panel and rear panel input terminals are
physically connected. Any voltage that is input to one setof terminals will also appear on the other set of terminals.

18

1-4-7. Using the Front Panel Input Terminals
Description

CautionStep

The front panel input terminals feature polarity-distinct
caps and accept M6 sized crimped terminals.
The front panel input terminals on the LSG Series are
physically connected to the rear panel terminals.
1. Turn the power off from the rear panel or put the unit
into standby mode.
2. Turn the power off from the power source.
3. Connect the load wires to the input terminals:
Connect the positive (+) input terminal on the load
generator to the high potential output of the powersource.
Connect the negative (-) input terminal to the low
potential output of the power source.

Negative
terminal

Positive
terminal- potential

19+ potentional

1-4-8. Using the Rear Panel Input Terminals
Description

CautionSteps

The rear panel input terminals accept up to M8-sizedcrimped terminals. The rear terminals come with a load
input terminal cover for safety.
The front panel input terminals on the LSG Series are
physically connected to the rear panel terminals.
1. Turn the power off from the rear panel or put the unit
into standby mode.
2. Turn the power off from the power source.
3. Connect the load wires to the input terminals:
Connect the positive (+) input terminal on the load
generator to the high potential output of the powersource.
Connect the negative (-) input terminal to the low
potential output of the power source.

+ potentinal- potential

201-4-9. Using the Terminal Cover (PEL -011)
Description

Caution

Steps(1/2)

The rear panel terminal cover should be used to prevent
electric shock. The rear panel terminal covers should
always be used when connecting a load to the rear panel
terminals. As the front panel and rear panel terminals are
physically connected, the terminal cover should also be
used as a safety measure when a power source isconnected to the front terminals
Ensure the power is off before making any connections to
the LSG Series.
Note: In the following diagrams, the cable wiring is notshown for clarity.
1. Remove the screw holding the top cover to thebottom cover.
1

2.
3.

Line-up the bottom covers with the notches in the
output terminals.
Place the top terminal cover over the bottom cover.

2

3

21

Steps(2/2)

4.

Use your thumb to slide the terminal covers shut, asshown in the diagram below.

45.

When the top and bottom covers are flush, reinsert
the screw that was removed in step 1.

5

22

1-4-10. Using the Terminal Cover (PEL -013)
Description

CautionSteps

The flexible rear panel terminal cover should be used
when the load wiring becomes too thick to be used with
the PEL-011 terminal cover. This is especially true whenusing the load generators in parallel. Like the PEL-013
terminal cover, the PEL-011 is used to prevent electric
shock. The rear panel terminal covers should always be
used when connecting a load to the rear panel terminals.
Ensure the power is off before making any connections tothe booster pack.
1. Wrap the insulation sheets around the terminals andload cables, as shown below. Make sure the terminals
and any exposed wires are covered by the sheets.

1
Insulation sheet

2.

Secure the insulation sheets using the supplied velcro
fasteners. 2 fasteners should be used for each sheet.

Fasteners
223

1-4-11. Using the Terminal Cover
Description

Caution
Steps

After connection is finished, please lock terminal cover toavoid electric shock when using the frame control
terminal.
Ensure the power is off, before making any connections
to the booster pack.
Install the terminal cover as shown in the picture below.

LSG-H Series

LSG Series

1-4-12. Using the Monitor out Cover
Description

After connection is finished, please lock monitor out coverto avoid electric shock when not using the monitor out
ports.

Steps

24

1-4-13. Remote Sense
Description

Steps

Remote sense can be used to help compensate for longcable length. The longer the cable, the higher the
potential resistance and inductance, therefore a shortcable is best. Twisting the cable can help reduce induced
inductance and using the remote sensing terminals
compensates the voltage drop seen across the load
leads, especially leads with higher resistance. This isuseful when used in CV, CR or CP mode.
1. Turn the power off from the rear panel or put the unit
into standby mode.
2. Turn the power off from the power source.
3. Connect the sense wires to the remote sensing
terminals:
Connect the positive sense (+S) terminal to the highpotential output of the power source.
Connect the negative sense (-S) terminal to the low
potential output of the power source.
Power
DUT
source+Twisted
pair

25

+
-S
+S

Programable
Electronic
Load1-4-14. Firmware Update
Description

CautionOperation
System version

The LSG Series allows the firmware to be updated by endusers. Before using the LSG Series, please check the
TEXIO TECHNOLOGY website or ask your local distributor
for the latest firmware.
Before updating the firmware, please check the firmware
version.
Utility

Shift

1.

Press

2.
3.

Select System/Info [F1].
The System information is listed on the LCD display.
Model: Model number of the LSG-H.
Serial Number: Serial number of the LSG-H.
Firmware Ver: Firmware version of the LSG-H.
http: Texio website address.
To view other system information, press System [F1]and select Memo.

4.

>

Help

in order.

RS232 LOAD

01/Oct/2017

Model: LSG-xxxxH
Serial Number: xxxxxxxx
Firmware Ver: x.xx.xxx
http://www.texio.co.jp
SystemInfo

Operation
Update Firmware

1.

Load

Interface

Time Set

Other

Insert a USB drive into the USB port. Ensure the USB
drive has the firmware file located in the root directory.
File

2.

Press

Shift

3.
4.
5.

Caution>FUNC

in order.

Select USB with the Media [F1] soft-key.
Press the File Utility [F5] soft-key.
Select the *.UPG upgrade file and press Select [F1]twice. Once to select the file and once to confirm.
6. Wait for the update to complete and reset the power
when prompted.
Do not turn the load generator off or remove the USB drive
when the firmware is being read or upgraded.

26

1-4-15. Conventions
The following conventions are used throughout the user manual.
Read the conventions below for a basic grasp of how to operate the LSG
Series menu system using the front panel keys.
Soft Menus
The F1 to F5 function keys at the bottom of the LCD
display correspond directly to the soft menus on top.

01/Oct/2017

RS 232 LOAD

0.00 W

0.00 V
0.0000 A
Mode
CC

PresetShift

F1 ~ F5
Function keys
175W
1.5 - 150V
0 - 35A

Select Sub Menu

I MON OUTFile

CC A Value 0.0000 A
CC B Value 0.0000 A
SlewRate
140.00 mA/us

Soft menus

I Range
H 8.75A

V Range
H 800V

FUNC
Utility

Fine

Help

A Value

Function
Configure
Static

P7

P8

P9

7

8

9

P4

P5

P6

4

5

6

P1

P2

P3

1

2

P0

CAL.

0

Local

Main

Short

Load On/
Off

3
Lock

Clear

Enter

TRIG OUT

ConfigurePressing this type of soft menu will enter a submenu.

27

ToggleParameteror State

Function/ ItemMode
CCParameter or State
This type of soft-menu icon has the function /item on the
top of the label and the selected setting or mode on thebottom of the label.
Repeatedly press the associated function key (F1~F5) tocycle through each setting. For example, repeatedlypressing the F1 key will cycle through the CC, CR, CV
and CP modes.
Mode
CC

Mode
CR

Mode
CV

Mode
CP

For some parameters, a popup window will also appear.
Selection of the setting is the same. Repeatedly pressing
01/Oct/2017
LOAD
therelevant function key (F1~F5) RS
will232
cycle
through eachsetting. The selection on the popup window will also beWreflected on the label.V

0.00
0.00
Popup window
0.0000A

High8.750ACC A Value
0.0000 A
Middle0.875ACC B Value
0.0000 A
Prameterselection Fine
LOW
87.5mA
SlewRate
140.00 mA/us
Mode
CC

I Range
H 8.75A

V Range
H 800Vlabel

28

A Value
Function
Configure
StaticParameter
Input

The scroll wheel, Enter key and number pad can be used toedit parameter values.

Number pad
P7

P8

P9

7

8

9

P4

P5

P6

4

5

6

P1

P2

P3

1

2

3

P0

CAL.

Lock

0

1.

Scroll wheel

Clear

Enter keyEnter

Use the scroll wheel to move the cursor to the desired
parameter.
A scroll bar is shown when there are additionalparameters off-screen.
01/Oct/2017

RS232 LOAD

0.00V 0.00W
0.0000ACursor
Level 1
Level 2Timer1ModeCP

I Range
H8.75A

0. 00 W
0. 00 W
0. 025 ms
V Range
H800V

Function
Dynamic

Scroll bar
Fine

Configure2.

Press the Enter key to select the parameter. The
parameter will become highlighted in white.

3.

Then use the number pad* or scroll wheel** to edit theparameter value.
01/Oct/2017

RS232 LOAD

0.00 V 0.00W
0.0000A

Parameter

CC A Value 0. 000 A
CC B Value 1. 000 A
SlewRate
140 . 00 mA/ us
ModeCC

I Range
H8.75A

V Range
H800V

Function
StaticFine
A Value
Configure

The parameter value is canceled when press the Clear key.
4. Press the Enter key again to finish editing the parametervalue.

29

Using theScroll Wheel to
Edit aParameter**Step Mode**To edit a parameter using the scroll wheel, simply turn thescroll wheel. Clockwise increases the value,
counterclockwise decrease the value.
Pressing the scroll wheel when a parameter is highlighted
allows you to change the step resolution. There are twodifferent step resolution methods: Step Mode and Cursor
Mode.
This is the default step resolution method and will only beavailable to use when it is applicable (Indicated by Fine or
Coarse in the Operation Status panel).
When a parameter is highlighted (step 3 above) pressing thescroll wheel will toggle the step resolution between fine andcourse. For details on how to set the step resolution
01/Oct/2017

RS232 LOAD

0.00 V 0.00W Highlighted
0.0000A
parameter+

CC A Value 0. 000 A
CC B Value 1. 000 A
SlewRate
140 . 00 mA/ us
ModeCC

I Range
H8.75A

V Range
H800V

Function
StaticFine
A Value

Coarse/Fine
adjustment

Configure

RS232
Cursor 03/09/12
Mode This method must first be enabled before
it can beLOAD
used.
Pressing the scroll wheel when a parameter is highlighted
allows you to set the step resolution by a digit value. Anorange line will appear under the currently selected digit
value. Repeatedly pressing the scroll wheel moves to thenext digit.

0.00 w

0.000 V
0.000 A
01/Oct/2017

RS232

0.00 V
0.0000 A

LOAD

0.00Highlighted
Wparameter

CC A Value+
0.000 A Cursor
Mode
Indicator
CC B Value Cursor1.000 A
Cursorposition
SlewRate 2500.00 mA/us
CC A Value 0.0000 A
CC B Value 1.0000 A
SlewRate
140.00 mA/ us

Mode
CC

I Range
H 8.75A

V Range
H800V

Function
StaticCursorA Value

Configure

A ValueMode
CC

I Range
H 35A

V Range
L 15V

30

Function
StaticConfigureEntering
AlphanumericCharacters

When renaming files, creating memos or notes, you will be
required to enter alphanumeric characters when thecharacter entry screen appears.
Only alphanumeric characters as well as space [ ],underscore [_] and minus [-] characters allowed.
1. Use the scroll wheel to move the cursor to the desired
character.
Rename:FilenameA B C D E F G H I J K L M
N O P Q R S T U V W X Y Z
1 2 3 4 5 6 7 8 9 0_ 1

Cursor2.

Press theEnter

key or Enter Character [F1] toselect a character.

Enter

OR Character3.
4.

To delete a character, press Back Space [F2].
To save the file name or memo, press Save [F3].

311-4-16. Help Menu
When any function key has been pressed or when a menu has been opened,
the HELP key can be used to display a detailed description.
Help Menu
1. Press any function key or soft-menu key.
Help

2.

Press

3.
4.

particular function key or menu.
Use the scroll to navigate the help contents.
Press the Exit [F5] key to exit the help menu.

to see the help contents on that

RS232 LOAD

01/Oct/2017
HELP
Press F5 to exit the Help mode.
Rotate the VARIABLE knob to scroll all
the contents.
-End-

Exit

32

2. OPERATION
2-1. Basic Operation
The LSG Series supports 7 main operating modes:
CC, CC+CV, CR, CR+CV, CV, CP, CP+CV

2-1-1. CC Mode
Description

Warning
Operation

In Constant Current Mode the load units will sink theamount of current programmed.
Regardless of the voltage, the current will stay the same.
For more details on CC mode,
please see the appendix on page 181 (7-5-1. CC Mode).
If you change the mode or the range when the load isalready on, the load will be turned off automatically.
1. Make sure the load is off.
Main

2.

Press

3.
4.

Select CC mode with the Mode [F1] soft-key.
Select the current range with the I Range [F2] softkey.
I Range:High, Middle, Low
Select the voltage range with the V Range [F3] softkey.
V Range: High, Low
Set the current level parameters using the scroll
wheel and number pad.
For Static mode, set CC A Value and /or CC B Value.
For Dynamic mode, set Level1 and Level2.
The maximum and minimum current levels depend on
the selected ranges.
To add CV mode to CC mode (CC+CV),
see page 39 (2-1-6. +CV Mode).
Set the remaining basic configuration settings such as
the slew rate, and switching function settings.
See page 44 (2-2. Basic Configuration) for details.

5.

6.

7.
8.

.

33

Display

RS232 LOAD

01/Oct/2017

0.000 V 0.00 W
Active setting
setting A A
Current
0.0000Current setting B

CC A ValueCC B Value
Mode SlewRate
ModeCC

I Range
H 8.75A

0.0000 A
0.0000 A
range Fine
Voltage
mA/uS
140.00A ValueVRangeL 80V

Function
StaticConfigure

Current range
Note

Basic CC mode configuration is complete. See page 44(2-2. Basic Configuration) for more configuration options.
The current range and voltage range applies to all theoperating modes.

342-1-2. CR Mode
Description

Warning
Operation

In Constant Resistance Mode, the unit will maintain aconstant resistive load by varying the current.
CR mode uses Ω (resistance) or S (conductance) for thesetting units.
For more details on CR mode,
please see the appendix on page 182 (7-5-2.CR Mode).
If you change the mode or the range when the load isalready on, the load will be turned off automatically.
1. Make sure the load is off.
Press

3.
4.

Select CR mode with the Mode [F1] soft-key.
Select the current range with the I Range [F2] softkey.
I Range:High, Middle, Low
Select the voltage range with the V Range [F3] softkey.
V Range: High, Low
Set the resistance or conductance level parameters
using the scroll wheel and number pad.
For Static mode, set CR A Value and/or CR B Value.
For Dynamic mode, set Level1 and Level2.
The maximum and minimum conductance/ resistancelevels depend on the selected current range.
To add CV mode to CR mode (CR+CV),
see page 39 (2-1-6. +CV Mode).
Set the remaining basic configuration settings such as
the slew rate, and switching function settings.
See page 44 (2-2. Basic Configuration) for details.

5.

6.

7.
8.

Display

Main

2.

.

RS232 LOAD

01/Oct/2017

0.00 W
0.000 V Active
setting
0.0000 A

Conductance/
Resistancesettings

CR A Value 0.54422 Ω
CR B Value 0.54422Ω
Voltage
Mode SlewRate
14.000
mA/uS
range
Mode
CR

I Range
H 8.75A

V Range
L 80V

Function
StaticCurrent range

35

Fine
A Value
ConfigureNote

Basic CR mode configuration is complete. See page 44(2-2. Basic Configuration) for more configuration options.
The current range and voltage range applies to all theoperating modes.

2-1-3. CR Units
Description
Operation

The CR setting units can be set to Ω (resistance) ormS (conductance).
1. Make sure the load is off.
2.

Press Main > Configure [F5] > Other [F2] in order,and set the CR Unit setting.
CR Unit:Ω or mS for the setting units.

362-1-4. CV Mode
Description

Warning
Operation

In Constant Voltage Mode, the unit will maintain aconstant voltage. In CV mode you set the constantvoltage level. For more details on CV mode, see theappendix on page 184 (7-5-4.CV Mode).
If you change the mode or the range when the load isalready on, the load will be turned off automatically.
1. Make sure the load is off.
Press

3.
4.

Select CV mode with the Mode [F1] soft-key.
Select the current range with the I Range [F2] softkey.
I Range:High, Middle, Low
Select the voltage range with the V Range [F3] softkey.
V Range: High, Low
Set the voltage level parameters using the scroll
wheel and number pad.
Set CV A Value and/or CV B Value.
The maximum and minimum voltage levels dependon the selected voltage range.
Set the remaining basic configuration settings such as
the response settings.
See page 44 (2-2. Basic Configuration) for details.

5.

6.

7.

Display

Main

2.

.

RS232 LOAD

01/Oct/2017

Active0.00 W
0.000 V setting
Voltage
Current
A
0.0000settingsettings

CV A Value
CV B Value
Mode

80.000 V
80.000V
Voltage
range

Mode
CV

I Range
H 8.75AFine
A Value

V Range Response
Configure
L 80V
Slow

Current range

Note

Basic CV mode configuration is complete. See page 44(2-2. Basic Configuration) for more configuration options.
The current range and voltage range applies to all theoperating modes.

372-1-5. CP Mode
Description

Warning
Operation

In Constant Power Mode, the unit will maintain a constant
power by varying the current. For more details on CP
mode, see the appendix on page 183 (7-5-3.CP Mode).
If you change the mode or the range when the load isalready on, the load will be turned off automatically.
1. Make sure the load is off.
Press

3.
4.

Select CP mode with the Mode [F1] soft-key.
Select the current range with the I Range [F2] softkey.
I Range:High, Middle, Low
Select the voltage range with the V Range [F3] softkey.
V Range: High, Low
Set the power level parameters using the scroll wheel
and number pad.
For Static mode, set CP A Value and/or CP B Value.
For Dynamic mode, set Level1 and Level2.
The maximum and minimum power levels depend on
the selected current range.
For static mode, the parameter that is set last
becomes the “active” setting. This will be shown in the
Operation Status Panel.
To add CV mode to CP mode (CP+CV),
see page 39 (2-1-6. +CV Mode).
Set the remaining basic configuration settings such as
the slew rate, and timer settings.
See page 44 (2-2. Basic Configuration) for details.

5.

6.

7.
8.

Display

Main

2.

.

RS232 LOAD

01/Oct/2017

0.00 V 0.00 W
Current
Power
A Active
0.0000settingsettings
setting
CP A Value
CP B Value
Mode +CVModeCP

I Range
H 8.75A

0.00 W
0.00
W
VoltageOFF
range
V Range
H 800V

Function
StaticCurrent range

38

Fine
A Value
ConfigureNote

Basic CP mode configuration is complete. See page 44(2-2. Basic Configuration) for more configuration options.
The current range and voltage range applies to all theoperating modes.

2-1-6. +CV Mode
Description
Operation+CV mode can be added to CC, CR and CP mode.
The +CV settings apply to all applicable modes.
1. Make sure the load is off.
2.
3.

Display

Press

Main

.

And select to Mode, I Range, and V Range.
Set the +CV voltage level. (You may need to scroll
down to the +CV setting)+CV: OFF ~ rated voltage+5%
RS232 LOAD

01/Oct/2017

0.000 V
0.0000 A

0.00 W

Timer1+CV setting 0.025 ms
Timer20.025 ms
+CV
5.500 VMode
CP + CV

Note

Note

I Range
H 8.75A

V Range
L 80V

Function
Dynamic

ConfigureThe +CV settings apply to all the applicable operating
modes.
For example: The +CV settings made in CR mode will be
carried over to the +CV settings in CC and CP mode.
Only in +CV settings, the external control is not possible.
See page 141 (4-1-3. External Voltage Control – Operation)
for +CV settings with external control.

392-1-7. Turning on the Load
Description

The load can be turned on and off by pressingOn/
the Load Off key.

On/

The Load Off key will turn orange when the load is “on”.
The LOAD icon in the mainframe status panel will turnorange when the load is on.
Display

LOAD on
RS232 LOAD

01/Oct/2017

Note

5.000 V
1.000

5.00 W

The load can be set to automatically turn on at start up.
See page 56 (2-3-4. Auto Load Configuration).
Aon via remote control. See the
The load can be turned
programming manual.
TheLevel1
load can be turned10.00
on via W
external control. See page148 (4-1-8. Turning the Load On using External Control).
Level2the load will automatically
0.00 W turn off if the range
By default
Fine
Timer1 mode (CC,0.025
mS
or operating
CV, CR,CP) is changed. To
disable this behavior, Set Load Off (Mode) and Load Off
ModeIRangeVRange Function
Configure(Range)to theOFF setting.
Seepage 56(2-3-5.Load OffCP
H 8.75A
L 80V
Dynamic(Mode) and Load Off (Range)) for details.

40

2-1-8. Shorting the Load
Description

Operation

The Short key can be used to simulate a short circuit of
the load input terminals. A short circuit is simulated by:
Setting the current to the maximum value in CC mode.
Setting the resistance to the minimum value in CR
mode.
Setting the voltage to the minimum value in CV mode.
Setting the power to the maximum value in CP mode.
When the load is shorted, the external controller also
sends a short signal. See page 152 (4-1-15. Short Control)for usage details.
The short function can be turned on and off by pressing
the

Short

key.

The Short key will turn red when the short function is
active.
The Short icon will appear when the short function is
active.
Display

SHORT onSHORT RS232 LOAD

01/Oct/2017

0.100 VNote

0.10 W

If the load is already off, pressing the Short key will turnthe load on (shorted) at the same time.
Pressing the Short key again will also turn the load off
again as well.
If the load is already on and the Short key is pressed,then when the Short key is pressed again the load willremain on (the electronic load will return to its previous
load condition).
The Short key will be disabled if the Short Function
setting is turned off. See page 42 (2-1-11.Short Function
Enable/Disable) for details.

41

2-1-9. Safety Short
Description
Operation

Note

When activated, the safety short function only allows theshort key to be used when the load is already on.
Press

Main

> Configure [F5] > Other [F2] in order,and set the Short Safety.
When set to OFF, the load can be shorted at any time.
When set to ON, the load can only be shorted when theload is already on.
Short(Safety):
OFF,ONThe Short Safety setting will be grayed out if Short
Function is set to OFF. See page 42 (2-1-11.Short Function
Enable/Disable) for Short Function.

2-1-10. Short Key Configuration
Description

The Short key can be configured to Toggle or Hold. By
Default the Short key is set to Toggle.
Toggle: Pressing the Short key will toggle the shorting
function on or off.
Hold: Holding the short key will short the load.

Operation

Press Main > Configure [F5] > Other [F2] in order,and set the Short Key setting.
Short Key: Toggle, HoldThe Short Safety setting will be grayed out if Short
Function is set to OFF. See page 42 (2-1-11.Short Function
Enable/Disable) for Short Function.

Note

2-1-11. Short Function Enable/Disable
Description

The short key can be disabled to prevent the operator
accidentally shorting the load.

Operation

Press Main > Configure [F5] > Other [F2] in order,and set the Short Function.
When set to OFF, the Short key is disabled and all shortconfiguration options in the Main > Configure> Other
menu are also disabled.
When set to ON, the Short key is enabled.
Short Function:
OFF,ON

42

2-1-12. Locking the Front Panel Controls
Description
Operation

The keys and scroll wheel on the front panel can belocked to prevent settings from being changed.
The keys can be locked and unlocked
Lockby press
The
Display

Shift

Load On/
Off

>

Clear

in order.

key will not be locked if the load is on.

LOCK will appear in the Mainframe status panel when
the keys are locked.

LOCK icon
LOCK

01/Oct/2017

0.000 V43

RS232 LOAD

0.00 W

2-2. Basic Configuration
The basic configuration settings are the common configuration settings thatare used for each operating mode. After selecting a basic operating mode (CC,CR, CV and CP mode), the slew rate, switching function, response rate andother common parameters should be configured.

2-2-1. Select the Switching Function
Description

The LSG Series has two switching function, static modeand dynamic mode. The switching function allows the
LSG Series to switch between two preset levels. Static
mode can only switch between the two levels manually,
while
Dynamic mode switches between each level
RS232 LOAD
automatically based on a timer.
Static mode: A Value, B Value
DynamicW
mode: Level1, Level2
When the unit is set to static mode, only one value (AValue or B Value) can be active at a time. The active
value is shown in the operation status panel.

0.00
W
W

Activesetting

Fine
A Value

Function
StaticConfigure

When the unit is set to dynamic mode, the unit will switch
between Level1 and Level2 based on the Timer1 andTimer2 parameters, shown below.
Value

Dynamic mode

Level2

Level1Time
Timer1 Timer2 Timer1

Dynamic mode is not available for CV mode.
Note

44

Operation

1.

Make sure the load is off.

2.

Press

Main

.

3.

Static Mode
Operation

Select Dynamic or Static mode with the Function [F4]soft-key.
A different switching mode can be set for CC, CR and
CP mode.
4. See page 45 (Static Mode Operation) for Static Mode.
See page 46 (Dynamic Mode Operation) for Dynamic
Mode.
For static mode, select whether A Value or B Value is theShift“active” setting, press the> Preset keys.
The “active” value will be shown in the Operation Status
Panel.
The load can be “on” when switching between A Valueand B Value.
RS232 LOAD

01/Oct/2017

0.00 V 0.00 W
A
0.0000B Value

A Value

CP A Value
0.00 W
Activesetting
CP B Value
0.00 W
Static mode
+CV
OFF V
Mode
CP

I Range
H 8.75A

45

V Range
H 800V

Function
StaticFine
A Value
ConfigureDynamic Mode
Operation

For dynamic mode, set the Timer1 and Timer2
parameters using the scroll wheel and number pad.
Timer1 sets the Level1 on-time.
Timer2 sets the Level2 on-time.
Take the slew rate settings into consideration whensetting the timers.
RS232 LOAD

01/Oct/2017

V
0.000
Level1A
0.0000Level2
Level1
Level2Timer1Mode
CP

0.00 W

Timer10.00 W

0.00 W
Dynamic0.025
modemS
I Range
H 8.75A

V Range
L 80V

Function
Dynamic

Fine

Configure

The frequency of the dynamic switching is output via the
TRIG OUT BNC.

46

2-2-2. Select the Display Units for Dynamic Mode Levels
Description

Operation

When Dynamic mode is selected, the Level1 and Level2
values can be set to either discrete values or as apercentage of a set value.
The setting applies to all applicable operation modes.
By default the units are set to Value.
When Percent is chosen, 100% = 100% of the Set
power, current or resistance value.
1. Make sure the load is off.
Press Main > Configure [F5] > Other [F2] in order,and set the Dyna. Level setting.
Dyna. Level:
Value, Percent
Note: Select of “Dyna. Level” is not available
for CV mode.

2.

Value Setting

Value
Level1/ Level2
Level2/ Level1
Time

Percent Setting

Value
Set
Level
Time

47

2-2-3. Select the Switching Time Configuration for Dynamic Mode
Description

The switching time for dynamic mode can be configured
to switch between two preset on-times (Timer1, Timer2)
or by setting a switching frequency and duty cycle.

Operation

Press Main > Configure [F5] > Other [F2] in order,and set the Dyna. Time setting.
Dyna. Time: T1/T2 Freq, Duty
Note: Select of “Dyna. Time” is not available
for CV mode.

T1/T2 Setting

Value

Timer1 Timer2

Freq,Duty
Setting

Time

Value

Duty
Frequency

48

Time

2-2-4. Slew Rate
Description

Operation

The current slew rate can be set for CC and CR mode.
The slew rate setting is used to limit the change in current
when switching.
For static mode, only a single slew rate can be set.
1. Make sure the load is off.
2.

Press

Main

.

3.

Set the slew rate(s) using the scroll wheel andnumber pad.
For static mode, only a single slew rate can be set.
For dynamic mode, set both the rising and falling slew
rates.
Take the timer settings into consideration whensetting the slew rates.
Note: Slew rate setting is not available
for CP and CV mode.

Dynamic mode

Value
Slew Rate
Slew Rate
Time

Static mode

Value

Slew RateTime49

2-2-5. CV, +CV Mode Response Speed
Description

Operation

The response speed setting is the response speed for thenegative feedback control of the load current when usedin CV, +CV mode. Response speed settings are only
applicable to CV, +CV mode.
Response speed settings of the +CV mode becomessame as Response speed settings of the CV mode. With
the +CV mode, Response speed settings is not
displayed.
The response speed is different from CV mode with the+CV mode.
A response speed that is too fast could cause the unit to
be unstable.
Reducing the response speed can improve stability.
1. Make sure the load is off.
Press Main , and make sure the unit is in CV
mode by using the Mode [F1] soft-key.
3. Select the response speed with the Response [F4]soft-key.
Response: Fast, 6, 5, 4, 3, 2, 1, Slow (LSG-H)
Fast,Slow (LSG)
CV mode: The response speed settings
Fast, 6, 5, 4 are the same.
+CV mode: The response speed settings
5 and 4 are the same.
The response speed settings
Slow and 1 is the same.
2.

Display

RS232 LOAD

01/Oct/2017

0.000 V
0.0000 A
CV A Value
CV B Value

80.000 V
80.000 V

ResponsesettingModeCV

I Range
H 8.75A50

0.00 WFine
A Value

V Range Response
Configure
L 80V
Slow

2-2-6. CC, CR and CP Mode Response Speed
Description

Operation

By default, the “normal current response” speed is set to
1/1. The response speed can be reduced to 1/2, 1/5,
1/10.
Reducing the current response speed can affect othersettings such as the slew rate and soft start settings.
1. Make sure the load is off.
2.

Press Main > Configure [F5] > Other [F2] in order,and set the Response parameter.
Response:
1/1, 1/2, 1/5, 1/10

51

2-3. Advanced Configuration Settings
Use the advanced configuration settings to configure settings other than thosedescribed in the basic configuration chapter.

2-3-1. Soft Start Setting
Description

The soft start setting is used to limit the amount of input
current at start-up or from when the Von Voltage
threshold is tripped.
The soft start setting only applies to CC, CR and CP
mode.(CP mode only for LSG Series)
Soft Start: ON
Input current

Rise voltage
Rise current
Time
Input current

Soft Start: OFF

Rise voltage
Rise current
Time

Operation

Main

Press
> Configure [F5] > Other [F2] in order,and set the Soft Start time.
Soft Start:
OFF, 1~200ms(LSG)
OFF, 3~200ms(LSG-H)52

2-3-2. Von Voltage Settings
2-3-2-1. Von Voltage Level
Description

The Von Voltage is the threshold voltage at which theload module will start to sink current.
Von voltage
Voltage
Von
Input voltage
Time
Current

Load ON
Input current
Time

Operation

Press Main > Configure [F5] > Other [F2] in order,and set the Von Voltage level.
Von Voltage: 0.00 ~ rated voltage

2-3-2-2. Von Voltage Delay
Description

Von Delay is the amount of time the unit will wait before
turning the load on after the Von Voltage threshold has
been latched. This will prevent overshoot current from
affecting the Von Voltage threshold.

Operation

Press Main > Configure [F5] > Other [F2] in order,and set the Von Delay time.
Von Delay:
OFF, 2.0~60ms (LSG/LSG-H)
Von Delay-CR
OFF, 5.0~60ms (LSG)
OFF, 2.0~60ms (LSG-H)

53

2-3-2-3. Von Voltage Latch
Description

When Von Latch is set to OFF, the load will turn off whenthe voltage drops below the Von Voltage threshold level.
When Von Latch is set to ON, the load will continue tosink current after being “latched”, even if the voltage
drops below the Von Voltage threshold level.
By default Von Latch is set to OFF.
Von Latch: OFF
Voltage
Von
Input voltage
Time
Current

Load OFF
Load ON
Input current
Time

Voltage

Von Latch: ON

Von
Input voltage
Time
Current

Load ON
Input current
Time

Operation

Press Main > Configure [F5] > Other [F2] in order,and set the Von Latch setting.
Von Latch: OFF, ON

54

2-3-3. Timer Functions
2-3-3-1. Count Time
Description

When Count Time timer is set to on, it will count theelapsed time from when the load was turned on to when it
was turned off.
This function is applicable to manual and automatic
shutdown (such as from protection functions such as
UVP etc.)
The elapsed time will be shown in the display
Measurement area.

Operation

Press Main > Configure [F5] > Other [F2] in order,
and turn the Count Time on or off.
Count Time:
ON, OFF

Display

RS232 LOAD

01/Oct/2017

W
0.000 VElapsed0.00
time
0:00:05
0.0000 A
Level10.00 W

2-3-3-2. Cut Off Time
Description

The Cut Off Time function will turn the load off after a setamount of time. After the load has been turned off, a
popup screen will LCD display the voltage level when theload was turned off.

Operation

Press Main > Configure [F5] > Other [F2] in order,and set the Cut Off Time.
Cut Off Time: OFF, 1 s ~ 999 h 59m 59 s

Display

RS232 LOAD

01/Oct/2017

0.000 V Cut0.00
off time W
Voltage at cut off time
0:00:05A
0.0000
Time0.00
Up W
Level1
5.1223V
Level2 Voltage :0.00
W
Timer10.025 mS
Enter
Mode
CP

I Range
H 8.75A

55

V Range
L 80V

Function
Dynamic

Fine

Configure2-3-4. Auto Load Configuration
Description

The LSG Series can be configured to automatically load
program function, normal sequence function, fast
sequence function or manual operation at startup.
By default, “Auto Load” is OFF and “Auto Load On” is
Load.

Operation

Utility

Shift

Press

2.

Turn Auto Load Off or On.
When set to OFF, the Auto Load setting is disabled.
Auto Load :OFF, ON
Select the Auto Load On configuration.
This will select whether the LSG Series willautomatically load program function, normal
sequence function, fast sequence function or manual
operation.
Auto Load On: Load : manual operation
Prog : program function
NSeq : normal sequence function
FSeq : fast sequence function

3.

>

Help

1.

> Load [F2] in order.

2-3-5. Load Off (Mode) and Load Off (Range)
Description

By default the load will automatically turn off when theeither the operating mode (CC, CV, CR, CP) or the range(I range, V range) is changed.
To allow the load to stay on when the operating mode ischanged, set the Load Off (Mode) setting to OFF.
To allow the load to stay on when the current or voltage
range is changed, set the Load Off (Range) setting toOFF.
By default, these settings are set to ON.
Utility

Operation
Shift

Press

2.

Select Load Off (Mode) setting.
When set to OFF, the load will stay on when theoperating mode is changed.
Load Off(Mode):
OFF,ON
Select Load Off (Range) setting.
When set to OFF, the load will stay on when therange is changed.
Load Off(Range):
OFF,ON

3.

>

Help

1.

56

> Load [F2] in order.

2-4. Step Resolution Configuration
There are two different ways (Cursor Mode and Step Mode) to set theresolution when using the scroll wheel to edit parameters.
Step Mode is the default method. Only one mode can be active at a time; when
one mode is active, the other mode is deactivated.

2-4-1. Cursor Mode Configuration
Description

Cursor Mode allows you to edit the selected parameterone digit at a time. When editing a parameter, pressing
the scroll wheel determines which digit is selected.
Turning the scroll wheel will then edit the parameter by
the step resolution of the digit.
See the Conventions section on page 30 (Cursor Mode of
1-4-15.Conventions) for operation details.

Operation

Press Main > Configure [F5] > Next Menu [F4] >Knob [F2] in order,and set the Status setting is set to Cursor.

Display

RS232 LOAD

01/Oct/2017

Configure
StatusCCH Step
CCM Step
CCL Step
CRH Step
ParallelCursor
0.0300 A
0.00300 A
0.300 mA
3.00 mS

Knob

57

External

CC
8.75A
80V
StaticPreviousMenu

2-4-2. Step Mode Configuration
Description

Settings

Operation

Display

When set to Step Mode, the voltage, current, resistanceand power settings can have the step resolution
configured. The step resolution refers to the step
resolution of the coarse adjustment for these settings.
The fine adjustment cannot be configured.
See the Conventions section on page 30 (1-4-15.
Conventions_ Step Mode) for details on how to switch
between coarse and fine adjustment modes.
The step resolution of each setting is configured
separately for each current range.
Settings
Description
CCH Step
CC mode, I Range = HighCCM Step
CC mode, I Range = Middle
CCL Step
CC mode, I Range = Low
CRH Step
CR mode, I Range = HighCRM Step
CR mode, I Range = Middle
CRL Step
CR mode, I Range = Low
CVH Step
CV mode, V Range = HighCVL Step
CV mode, V Range = Low
CPH Step
CP mode, I Range = HighCPM Step
CP mode, I Range = Middle
CPL Step
CP mode, I Range = Low
Press Main > Configure [F5] > Next Menu [F4] >Knob [F2] in order,and set the desired step resolution settings.
2. Set the desired step resolution settings.
(The step resolution settings are only available when
Status=Step (coarse/fine))
For example if the step resolution for CCM Step is 0.006A,
then the resolution can be incremented in 0.006A steps.
1.

RS232 LOAD

01/Oct/2017

Configure
StatusStep (coarse/fine)
CCH Step
0.0300 A
CCM Step 0.00600 A
CCL Step
0.300 mA
CRH Step
3.00 mS
Parallel

Knob

58

External

CC
8.75A
80V
StaticPreviousMenu

2-5. Protection Settings
The Protection settings are used to prevent damage to the unit or the powersource by excessive current, voltage or power.
An alarm is generated and a message is displayed on the LCD display when aprotection setting is tripped. When an alarm is activated, the load is turned off(or limited), and the ALARM STATUS pin of the J1 on the rear panel (pin 16)
turns on (open collector output by a photo coupler). The protection settings
can be used regardless of whether the remote sense connections are used ornot.

2-5-1. OCP
Description

Operation

Alarm

Display

For OCP, the LSG Series can be configured to either limit
the current or turn off the load.
The OCP levels can be set to 10% higher than the rated
current.
Press

Main

> Configure [F5] > Protection [F1] in order,and set the OCP Level and OCP Setting.
OCP Level:
rated current + 10%
OCP Setting: LIMIT, Load Off
When OCP Setting is configured to Load Off, a message
will be displayed on the LCD display when OCP istripped. The Enter key must be pressed to clear thealarm message.
When configured to LIMIT, OCP will be displayed on the
LCD display when the OCP is tripped and the current will
be limited to the OCP Level setting.
01/Oct/2017
Alarm
messagewhen OCP isset to Load Off

RS232 LOAD

indicator
V 0.4327W
8.653OCP
OCP
mA
50.006OCP
Alarm

Please Press Enter
CV A Value 80.000 V
To Clear Alarm
CV B Value 80.000 V

Fine
A ValueModeCV

I Range
L87.5mA

59

V Range Response
Configure
L 80V
Fast

2-5-2. OPP
Description

Operation

Alarm

Display

For OPP, the LSG Series can be configured to either limit
the power or turn off the load.
The OPP levels can be set to 10% higher than the rated
power.
Press

Main> Configure [F5] > Protection [F1] in order,and set the OPP Level and OPP Setting.
OPP Level:
rated power + 10%
OPP Setting:
LIMIT, Load Off
When OPP Setting is configured to Load Off, a message
will be displayed on the LCD display when OPP is tripped.
The Enter key must be pressed to clear the alarm
message.
When configured to LIMIT, OPP will be displayed on the
LCD display when the OPP is tripped and the power will belimited to the OPP Level setting.
01/Oct/2017
Alarm
messagewhen OPP is
set to Load Off

RS232 LOAD

indicator
V 0.4327W
8.653OPP
OPP
mA
50.006OPP
Alarm

Please Press Enter
CV A Value 80.000 V
To Clear Alarm
CV B Value 80.000 V

Fine
A ValueModeCV

I Range
L87.5mA

60

V Range Response
Configure
L 80V
Fast

2-5-3. UVP
Description

Operation

Alarm

Display

If the UVP is tripped, the LSG Series will turn off the load.
The UVP levels can be set from 0V to 10% higher than
the rated voltage.
Press

Main

> Configure [F5] > Protection [F1] in order,and set the UVP Level.
UVP Level:
OFF, 0~ rated voltage + 10%
The UVP indicator will only appear on the LCD display
when the input voltage is below the UVP level.
Pressing the Enter key will clear the message.
The UVP indicator will remain on the display until thevoltage level rises back above the UVP level.
01/Oct/2017
Alarm
messagewhen UVP is
set to Load Off

RS232 LOAD

8.653 V 0.4327W
UVP
mA
50.006UVP
Alarm
UVP indicator

Please Press Enter
CV A Value 80.000 V
To Clear Alarm
CV B Value 80.000 V

Fine
A ValueModeCV

I Range
L87.5mA

61

V Range Response
Configure
L 80V
Fast

2-5-4. UVP Ring Time
Description

The UVP Ring Time settings allows the UVP alarm to keepsounding for a user-set amount of time after the UVP has
been tripped.
The alarm will continue ringing for the set amount of timeeven if the voltage rises back above the UVP level~ unlessthe alarm is cleared manually.

Operation

Press Main > Configure [F5] > Protection [F1] in order,and set the UVP Ring Time.
UVP Ring Time:OFF, 1~600s,Infinity
When the voltage dips below the UVP level, the UVP
indicator and message will appear on the LCD display. The
UVP buzzer will sound if UVP Ring Time is set.
Under this scenario the following outcomes are possible:
Pressing the Enter key will clear the message and thebuzzer. The UVP indicator will remain on the display untilthe voltage level rises back above the UVP level.
If the UVP Ring Time is allowed to elapse, the buzzer willstop. However the UVP indicator and message willremain on screen until the voltage increases and themessage is cleared.
If the voltage rises back above the UVP level, the UVP
indicator will be cleared from the display, but the buzzer
will continue to sound until the UVP Ring Time has
elapsed and the message will remain until it has beencleared.

Alarm

Display

01/Oct/2017
Alarm
messagewhen UVP is
set to Load Off

RS232 LOAD

8.653 V 0.4327W
UVP
mA
50.006UVP
Alarm
UVP indicator

Please Press Enter
CV A Value 80.000 V
To Clear Alarm
CV B Value 80.000 V

Fine
A ValueModeCV

I Range
L87.5mA

62

V Range Response
Configure
L 80V
Fast

2-5-5. OVP
Description

Operation

Alarm

Display

If the OVP is tripped, the LSG Series will turn off the load.
The OVP levels can be set from 0V to 10% higher than the
rated voltage.
Press

Main

> Configure [F5] > Protection [F1] in order,and set the OVP Level.
OVP Level:
OFF, 0~ rated voltage + 10%
Note: To turn OVP off, set the OVP voltage greater than thecurrent rating voltage + 10%.
The OVP indicator and a message will only appear on the
LCD display when the input voltage is below the OVPlevel.
Pressing the Enter key will clear the message.
The OVP indicator will remain on the display until thevoltage level falls back above the OVP level.
Note: Please use the input voltage to the LSG Series in
800V or less.
01/Oct/2017
Alarm
messagewhen OVP is
set to Load Off

RS232 LOAD

indicator
V 0.4327W
8.653OVP
OVP
mA
50.006OVP
AlarmPlease Press Enter
CV A Value 80.000 V
To Clear Alarm
CV B Value 80.000 V

Fine
A ValueModeCV

I Range
L87.5mA

63

V Range Response
Configure
L 80V
Fast

2-5-6. UnReg
Description

Alarm

Display

The UnReg error message will appear on the LCD
display when the electronic load is operating in an
unregulated state.
The UnReg indicator will appear on the LCD display
when the set load is inadequate for the power source.
To clear the UnReg indicator, increase the current of
power source or reduce the load requirements.
RS232 LOAD

01/Oct/2017

8.653 V 0.4327W
UnReg
50.006 mA
UnReg indicator

CV A Value
CV B Value

80.000 V
80.000 V

Fine
A ValueModeCV

I Range
L87.5mA

V Range Response
Configure
L 80V
Fast

2-5-7. Para
Description

Alarm

Display

The Para error message will appear on the LCD display
when the LSG/LSG-H is used in parallel and if an error
is produced.
The Para error message indicates one of the following
possible conditions: UnReg, R.OCP, OTP.
To clear the Para indicator, remove the cause of thealarm.
RS232 LOAD

01/Oct/2017

indicator
V 0.4327W
8.653Para
Para
50.006 mA

CV A Value
CV B Value

80.000 V
80.000 V

Fine
A ValueModeCV

I Range
L87.5mA

64

V Range Response
Configure
L 80V
Fast

2-5-8. RVP
Description
Alarm

Display

If the RVP is tripped, the LSG Series will turn off the load.
The RVP error message indicates when the terminal
voltage is negative.
The Enter key must be pressed to clear the alarm
message.
01/Oct/2017
Alarm
messagewhen RVP is
set to Load Off

RS232 LOAD

indicator
V 0.4327W
8.653RVP
RVP
mA
50.006RVP
Alarm

Please Press Enter
CV A Value 80.000 V
To Clear Alarm
CV B Value 80.000 V

Fine
A ValueModeCV

I Range
L87.5mA

65

V Range Response
Configure
L 80V
Fast

2-6. System Settings
The following section covers a number or miscellaneous system settings suchas:
Input control settings
Sound settings
Alarm tone settings
Display settings
Language settings
Input/output trigger setting
All system settings are accessible in the Utility menu.

2-6-1. Input control settings
Description

The Knob Type setting determines if values are updated
immediately as they are edited or if they are only updated
after the Enter key is pressed.
The Updated setting is applicable for when the load isalready on and the user wishes to change the set values(current, voltage, etc.) in real time.
The Old setting is will only update the values after theEnter key is pressed.
Utility

Operation
Press

Shift

>

Help

> Other [F5] in order,and set the Knob type.
Knob type:
Updated, Old

2-6-2. Sound Settings
2-6-2-1. Speaker Settings
Description

Turns the speaker sound on or off for the user interface,such as key press tones and scrolling tones.
Utility

Operation

Press Shift> Help> Other [F5] in order,and set the Speaker settings on or off.
Speaker:
ON, OFF
Note: When set to OFF, the speaker setting will notdisable the tones for Go-NoGo or protection
alarms.

66

2-6-2-2. Alarm Tone Settings
Description

The alarm tone for the unit can be turned on or off in theutility menu. The alarm tone can be set separately.
Alarm Tone: alarm of the protection (OCP, OPP, UVP,
and OVP) settings.
UnReg Tone: alarm of operating in an unregulated
state.
Go-NoGo Tone: alarm of Go-NoGo testing.
Utility

Operation

Help

Shift

Press
>
> Other [F5] in order,and set the alarm tone settings on or off.
Alarm Tone:
ON, OFF
UnReg Tone:
ON, OFF
Go_NoGo Tone: ON, OFF
Note: The Alarm tone and Go_NoGo Tone settings ignore
the Speaker setting.

2-6-3. Display Settings
Description
Operation

Sets the contrast level for LCD display.
Utility

Press Shift> Help> Other [F5] in order,and set the Contrast and Brightness settings.
Contrast:
3 ~ 13 (low ~ high)
Brightness:
50 ~ 90 (low ~ high)2-6-4. Language Settings
Description
Operation

The LSG Series supports only English.
Utility

Press Shift> Help> Other [F5] in order,and set the Language setting.
Supported languages:
English

2-6-5. Input / Output Trigger Settings
2-6-5-1. Trigger in Delay
Description

The Trig in Delay setting determines how long to delay
any action after a trigger is received.
Default setting 0.01ms
Utility

Operation

Press Shift> Help> Other [F5] in order,and set the Trig in Delay setting.
Trig in Delay:
0.01~100ms

67

2-6-5-2. Trigger Out Width
Description

The Trigger Out Width setting sets the trigger output
signal’s pulse width.
Default setting 10.0us
Utility

Operation

Help

Press Shift>> Other [F5] in order,and set the Trig Out width.
Trig Out width:
2.5– 5000us

2-6-6. Measure Average
Description

The Measure Average setting is used to set the speed ofthe measurement display. The setting has three modes.
They are slow, normal and fast
The default mode for Measure Average setting is slow.
Utility

Operation

Help

Shift

1. Press+> Other[F5].
2. Set the Measure Average setting.
Slow
Average 1024 times
Normal Average 64 times
Fast
Average 4 times
Default
Slow mode

2-6-7. VP Load Off
Description

When the input terminal detects reverse voltage, awarning message will be displayed and the RVP Load
Off setting can be set to turn on or off the load as well.
The setting has two modes. They are ON and OFF.
The default mode for RVP Load Off setting is ON.
Utility

Operation

Help

Shift

1. Press+> Other[F5].
2. Set the Load Off setting.
ON
When the input terminal detects the reverse
voltage, a warning message will be displayedon the screen and the load will be turned off.
OFF
When the input terminal detects the reverse
voltage, a warning message will be displayedon the screen but the load will not be turned
off.

68

2-7. Go-NoGo
The Go-NoGo configuration is used to create pass/fail limits on the voltage orcurrent input. If the voltage/current exceeds the pass/fail limits, an alarm will be
output.
The Go-NoGo configuration can be used with the program operation to create
complex pass/fail tests.

2-7-1. Setting the Go-NoGo Limits
Description

Operation

The Go-NoGo setting limits can be set as either discrete high& low values or as a percentage offset from a center value.
The limit level of the CC, CR and CP mode become thevoltage level.
The limit level of the CV mode becomes the current level.
The set range of the limit level of the voltage/ current is rated
voltage/ current of the voltage/ current range H.
1.

Press

Main

> Configure [F5] > Go-NoGo [F3] in order.

2.

Note

Select Entry Mode and choose how to set
the pass/fail limits.
Value will allow you to set the limits as discrete values.
Percent will allow you to set the limits as a percentage
offset from a center value.
3.
If Entry Mode was set to Value,
Set the High & Low limit values.
High: 0~ rated current/voltage
Low: 0 ~ rated current/voltage
4.
If Entry Mode was set to Percent,Set the Center voltage/current and High, Low % values.
Center: 0~ rated current/voltage
High:
Center + 0~100% of Center current/voltage
Low:
Center - 0~100% of Center current/voltage
5.
Set the Delay Time.
The delay time setting will delay activating the Go-NoGotesting by a specified amount of time.
The delay setting can compensate for startup oscillationand other instabilities during startup.
Delay Time
0.0~1.0 seconds (0.1s resolution )When the Main settings are saved or recalled, the Go-NoGosettings are also saved / recalled. See the Save/Recall
chapter for details, page 71 (2-8. Save / Recall).

69

2-7-2. Running a Go-NoGo Test
Description

Operation

Go-NoGo test results are displayed in the measurement
panel of LCD display.
GO indicates pass (good).
NG indicates fail (no good).
1.
2.

3.

Display:
GO

Press

Main

> Configure [F5] > Go-NoGo [F3] inorder.
Set SPEC Test to ON.
When SPEC Test is ON, SPEC will appear in theoperation status panel of LCD display. This means theunit is ready for Go-NoGo testing.
Turn the load on.
The test starts from the time the load was turned on +the Delay Time.
01/Oct/2017

Test result

0.000 V 0.00 WGO
A test = ON
0.0000SPEC
Level1
Level2

Display:NG

RS232 LOAD

01/Oct/2017

0.00 W
0.00 W
Test result

SPEC

RS232 LOAD

0.000 V 0.00 W
NG
A test = ON
0.0000SPEC
Level1
Level20.00 W
0.00 W70SPEC

2-8. Save / Recall
The LSG Series can save and recall system settings, preset data, memory
data, Go-NoGo settings as well as normal and fast sequences to internal
memory or to USB.

2-8-1. File Structure
Description

The LSG Series file system can save files tointernal memory (Media | Memory) andexternal memory (Media | USB).
To save or recall Memory, Setup or Preset data, the LSG
Series uses a three tier system where files are saved orrecalled in the following order:
Active settings <> Internal memory <> USB.
This can be best described in the picture below.
ActiveLocal Memory
Settings
MemoryMemorydata
datax1
Setup data x1
Preset data x1
Nseq. data x1
Fseq. data x1
Media | Memory
Memory data (M001 ~ M256)
Setup data (001 ~ 100)
Preset data (P0 ~ P9)
Media | USB
Memory data (M001 ~ M256)
Setup data (001 ~ 100)
Preset data (P0 ~ P9)
Nseq. data x1
Fseq. data x1

For example:
To load Preset Data P7 from USB, you must first load
Preset Data P0~P9 to internal memory, then from internal
memory load Preset P7 to be the active preset setting.
For normal and fast sequences however, files can besaved or recalled directly to/from USB memory.

71

2-8-2. File Types
Memory Data

Setup Data

Preset Data

NSeq Data

FSeq Data

Memory data contains general settings and is used for
creating programs. Memory Data contains the operating
mode, range, response and Go/NoGo settings. Memory
data can be stored both internally and externally to USB.
Preset data and Memory data store the same contents.
Internal Format
M001 ~ M256
External Format
model no_file no.M
example: 1050H_01.M
Setup data contains all general configuration settings,
protection settings; program and program chain settings,
as well as parallel configuration settings.
Internal Format
1 ~ 100
External Format
model no_file no.S
example: 1050H_00.S
Preset Data contains the same settings as the Memory
Data. Preset Data contains the operating mode, range,
response and Go-NoGo settings.
Internal Format
P0 ~ P9
External Format
model no_file no.P
example: 1050H_00.P
NSeq Data contains the Normal Sequence settings.
Internal Format
None
External Format
model no_file no.N
example: 1050H_00.N
FSeq Data contains the Fast Sequence settings.
Internal Format
None
External Format
model no_file no.F
example: 1050H_00.F72

2-8-3. Saving Files to Internal Memory
Description

When saving Memory, Setup or Preset Data to internal
memory, the currently active setting is saved to one of theinternal memory slots.
Memory Data has 256 memory slots, Setup Data has 100
memory slots and Preset Data has 10 memory slots.

Memory Data
ExampleMedia | Memory
M001
:
MXXX
:
M256

Active setting

Display

RS232 LOAD

01/Oct/2017

Save file type
CC

Data Type

MemoryMemoryM256

87.5mA
80V
StaticSave file location
MemoryA ValueMedia
MemorySave
File

Operation
1.

Press

Shift

>

2.
3.

Note

RecallFUNC

in order.

Select Memory with the Media [F1] soft-key.
Select the Data Type and choose the type of file to save.
Data Type: Memory Data,
Setup Data,
Preset Data
4. Select which internal memory location to save the file.
Memory:M001 ~ M256
Setup Memory:
1 ~ 100
Preset:P0 ~ P9
5. Press Save [F3] to save.
Save Ok will be displayed when the save has been
completed.
Normal Sequence and Fast Sequence data cannot berecalled from or saved to an internal memory slot.

73

2-8-4. Saving Files to USB Memory
Description

When saving files to USB memory, all the memory locations
from the selected data type are saved as a single file to theUSB file path directory.

Memory Data
ExampleMedia | Memory

Media | USB

M001
:
MXXX
:
M256

Save fileFor example, Memory Data M001 to M256 is saved to asingle file on USB.
Display

RS232 LOAD

01/Oct/2017

Save file type
CC

Data Type

MemoryUSB file path

Media
USB

Operation
(1/2)

1.

80V

Static
175H_01.M
175H_02.M
Save file name

Save File
Recall FilePath: usb:USB

87.5mA

Save

RecallA Value
File
UtilityInsert a USB drive into the USB port.
File

Shift

Press

3.
4.

Select USB with the Media [F1] soft-key.
Select the Data Type and choose the type of file to save.
Data Type: Memory Data, Setup Data, Preset Data,
NSeq, FSeq
Select Save File and choose a save filename.
Turn the scroll wheel to increase/decrease the filenumber.
Memory:Model_file number.M
Setup Memory:
Model_file number.S
Preset:Model_file number.P
NSeq:
Model_file number.N
FSeq:
Model_file number.F

5.

>

FUNC

2.

74

in order.

Operation(2/2)

File Utilities

6.

Press Save [F3] to save.
The file will be saved to the USB file path.
Save Ok will be displayed when the save has been
completed.
If saving-over an existing file you will be asked to confirm
the save.
Press the Save[F3] key to confirm.
Press File Utility [F5] to access the file utility. See page 78 (28-8. File Utility) for details.
Change the USB path.
Rename files or create directories.

2-8-5. Recalling Files from Internal Memory
Description

When recalling Memory, Setup or Preset Data from theinternal memory slots, the recalled file becomes the active
setting.
Memory Data has 256 memory slots, Setup Data has 100
memory slots and Preset Data has 10 memory slots.

Memory Data
ExampleMedia | Memory
M001
:
MXXX
:
M256

Active setting

Display

RS232 LOAD

01/Oct/2017

Save file typeCC

Data Type

MemoryMemoryM256

87.5mA
80V
StaticSave file location
MemoryA ValueMedia
MemorySave

75

RecallFileOperation2.
3.

Select Memory with the Media [F1] soft-key.
Select the Data Type and choose the type of file to recall.
Data Type: Memory Data, Setup Data, Preset Data
Select which memory slot to recall from.
Memory:M001 ~ M256
Setup Memory:
1 ~ 100
Preset:P0 ~ P9
Press Recall [F4] to recall.
For Memory Data and Preset Data, a popup window willappear. Press the Enter key to confirm the recall.

5.

>

FUNC

Press

4.

Note

Shift

1.

in order.

Normal Sequence and Fast Sequence data cannot berecalled from or saved to an internal memory slot. They can,however, be recalled directly from USB memory. See thenext section below for details.

2-8-6. Recalling Files from USB Memory
Description

CautionMemory Data
ExampleWhen recalling Memory, Setup or Preset files from USB
memory, a single file from the USB drive will overwrite all theexisting memory slots for the selected data type.
For Normal or Fast Sequence files, the recalled file becomesthe active setting as these types of files don’t have aninternal memory slot.
You can only recall files from the same model.
Media | Memory

Media | USB

Recall file

M001
:
MXXX
:
M256

For example, if the file 175H_01.M is recalled, all the
Memory Data from M001 to M256 will be overwritten.

76Display

RS232 LOAD
Save
file
CC
type

01/Oct/2017

Data Type

Memory175H_01.M
Save file
175H_02.M
name
USB file
path

USB
Media
USB

1.

80V
StaticSave File
Recall FilePath: usb:

Operation

87.5mA

Save

RecallA Value
File
UtilityInsert a USB drive into the USB port.
File

2.

Press

Shift

>

3.
4.

FUNC

in order.

Select USB with the Media [F1] soft-key.
Select the Data Type and choose the type of file to recall.
Data Type:
Memory Data, Setup Data, Preset Data,
NSeq, FSeq
5. Select Recall File and choose a filename.
Turn the scroll wheel to increase/decrease the filenumber.
Memory:Model_file number.M
Setup Memory:
Model_file number.S
Preset:Model_file number.P
NSeq:
Model_file number.N
FSeq:
Model_file number.F
6. Press Recall [F4] to recall.
Recall Ok will be displayed when the recall has been
completed.
Press File Utility [F5] to access the file utility. See page 78 (2File Utilities
8-8. File Utility) for details.
Change the USB path.
Rename files or create directories.
If “Machine Type Error” is displayed it indicates that the filethat you are trying to recall originated from a different model.
CautionYou can only recall files from the same model.

772-8-7. Recall Memory Safety Setting
Description

By default when you try to recall a file or setting from memory,a message will appear asking you to press the Enter key toconfirm. This is the standard safety measure to ensure that thewrong file/setting is not recalled. This safety measure can bedisabled by setting the Mem. Recall setting to “Direct”.

Operation

Press Main > Configure [F5] > Other [F2] in order,and set the Mem. Recall setting.
Mem. Recall:
Safety, Direct
This setting only applies when recalling preset settings frominternal memory, either by using the Presets keys (P0 - P9) or
by using the File menu.
Preset keys: See page 79 (2-8-9-2.Quick Preset Recall).
File menu: See page 75 (2-8-5.Recalling Files from Internal
Memory).

Note

2-8-8. File Utility
Description

Operation

The file utility allows you to create new folders, rename
files and set the USB path directory.
It is only available for use with the USB external memory.
1. Insert a USB drive into the USB port.
File2.
Display

Press Shift> FUNC > File Utility [F5] in order,
the file utilities screen appears.
01/Oct/2017

RS232 LOAD

USB path
cursorPath: usb:\Test
Folder1
Folder2

16-Feb-17 13:46
18-Feb-17 11:16

Folder3

19-Feb-17 08:32

175H_01.M

01-Mar-17 10:12

175H_02.M

03-Mar-17 13:13

175H_03.M

23-Mar-17 09:02

3 folder(s), 15 file(s)SelectCreatea new Folder
Rename a Folder 1.

New
FolderRenameDeletePrevious
Menu

Press New Folder [F2] to create a new folder.
Use the on-screen display to enter the filename.
A maximum of 8 characters.
Use the scroll wheel to move the cursor to thefile/folder you wish to rename.

78

2.

DeleteFile or Folder

1.
2.
3.

Press Rename [F3].
Use the on-screen display to enter the filename.
A maximum of 8 characters.
Use the scroll wheel to move the cursor to thefile/folder you wish to delete.
Press Delete [F4].
Press Delete [F4] again to confirm the deletion.

2-8-9. Preset
The Preset key is used to save and recall preset settings from the front panel
quickly. The presets have the same contents as memory data; this includes
the operating mode, range, configuration settings and Go-NoGo settings.

2-8-9-1. Quick Preset Save
Description

The current settings can be saved to P0 ~ P9 using the
Preset key and the number pad.

Operation

1.

Press Preset

.

P0

2.

P9

0
9
Pressing~
until a beep is heard.
The beep indicates that the setting was saved to theselected preset.

2-8-9-2. Quick Preset Recall
Description

Presets P0 to P9 can be recalled quickly by using the
Preset key and the number pad.

Operation

1.

Press Preset

.

P0

P9

0

2.

Press

3.

Press Enter

~

9

.

to confirm the recall when a popup

window appears.
4.

Press Preset

79

again to deactivate the preset key.

2-8-10. Default Settings
2-8-10-1. Factory Default Settings
Description

The factory default settings can be recalled at any time.
See page 174 (7-3. LSG Series Default Settings) for a list of
the factory default settings.
File

Operation
Shift

>

FUNC

1.

Press

2.
3.
4.

Select Default with the Media [F1] soft-key.
Press Factory Default [F2].
Press Factory Default [F2] again to confirm.

in order.

2-8-10-2. User’s Default Setting
Description
Save User’s
Default Setting

Recall User’s
Default Setting

The currently active settings can be set as the “User’s
Default” settings.
File

Shift

>

FUNC

1.

Press

in order.

2.
3.

Select Default with the Media [F1] soft-key.
Press Save [F3].
The User’s Default is saved immediately.
File

Shift

>

FUNC

1.

Press

2.
3.
4.

Select Default with the Media [F1] soft-key.
Press Recall [F4].
Press Recall [F4] again to confirm.
The User’s Default must be saved first before it canbe recalled.

80

in order.

3. Function MENU
3-1. Function Menu Overview
The Function menu can be used as a quick access hub to the Program, Normal
Sequence, Fast Sequence, OCP Test, OPP Test or BATT Test function.
It is also used to set Function specific settings:
Function Select. Complete Ring Time. NSEQ Timer.

3-1-1. Select a Function
Description

Operation

Function Select
ScreenThe Function Select option is used to turn a Program,Normal Sequence, Fast Sequence, some Test function(OCP, OPP and BATT) or off. Before one of thesefunctions is turned on, they should be configured
beforehand. Program, Sequences, OCP Test function,
respectively.
Refer to the following for those functions.
Program: page 85 (3-2.Program function )Sequence: page 91 (3-3.Sequence function)
OCP Test function: page 106 (3-4.OCP Test function )OPP Test function: page 113 (3-5. OPP Test function )BATT Test function: page 120 (3-6. BATT Test function )MPPT function page127 (3-7.MPPT function)
1.

Press FUNC .

2.

Select Function Select and choose a function to turnon or choose to turn off the last function.
Function Select:
OFF,
OCP
PROG,
OPP
NSEQ,
BATT
FSEQ,
MPPT
RS232 PROG

01/Oct/2017

FUNCTION
PROG
Function SelectComplete Ring Time
5 s
NSEQ Timer
Elapsed

Program

NormalFast
Sequence Sequence

81

OCP

Note

After a function is selected, it is then “turned on”.
PROG , NSEQ , FSEQ , OCP , OPP , BATT . MPPT willappear at the top of the LCD display when the selectedfunction is on.
When in the Main menu, the PROG, NSEQ,FSEQ or
OCP icon will appear prominently on the LCD display toremind the operator that a function is still on. The manual
operation cannot be turned on when a Function mode isturned on.

Be sure to turn the selected function off to return to The
manual operation.

3-1-2. Turning on the Load with the Selected Function
Description
Operation

When a function is turned on, the load can be turned on(with the selected function) by pressing Shift + Load.
1. Select the function (PROG, NSEQ, FSEQ, OCP, OPP
or BATT).
2.

Press

On/
> Load Off in order.

Shift
On/

The Load Off key will turn orange when the load is“on”.
The function icon (PROG , NSEQ , FSEQ, OCP, OPP
or BATT) turns orange when the load is turned on.
3.
DisplayOn/

Press Load Off . The load can be turned off.

LOAD on with the selected function active
RS232 PROG

03/Oct/2018

Note

1.500 V
0.000

1.50 w

The selected function will need to be turned off before a“manual operation” can be performed.
A

Level1
Level2Timer1Mode
CP

0.00 W
0.00 W
0.025 mS
IRange82 H 35A

VRangeL 15V

Function
Dynamic

Fine

Configure3-1-3. Complete Ring Time
Description

Operation

Function Select
ScreenThe Complete Ring Time function turns the alarm on for auser-set amount of time after a program, sequence or
OCP Test function has finished.
1.

Press FUNC .

2.

Select Complete Ring Time and select how long thealarm should ring after a function has completed.
The Complete Ring Time setting applies to all thefunctions.
Complete Ring Time:OFF (Default),
1 – 600s, Infinity
RS232 PROG

01/Oct/2017

FUNCTION
PROG
Function SelectComplete Ring Time
5 s
NSEQ Timer
Elapsed

Program

Note

NormalFast
Sequence Sequence

OCP

The alarm may not sound if Alarm Tone is turned off (seepage 67).

83

3-1-4. NSEQ Timer
Description

Operation

Function Select
ScreenThe NSEQ Timer setting determines whether the timer
for the Normal Sequence function displays the elapsed
time or the remaining time for both the current step andthe overall test time for the sequence.
1.

Press FUNC .

2.

Select NSEQ Timer and select whether the current
step and total test time is displayed as elapsed timeor remaining time.
NSEQ Timer
Elapsed (Default ),Remaining
RS232 PROG

01/Oct/2017

FUNCTION
PROG
Function SelectComplete Ring Time
5 s
NSEQ Timer
Elapsed

Program

Display example

NormalFast
Sequence Sequence

OCP

RS232 NSEQ

01/Oct/2017

0.000 V
0.0000 A

0.00 W
0:00:05

Run N.Seq.Elapsed
Seq.
No: time
01
or remaining
for
the
total
test
time
Step
0003
0:00:05
Loop:
Elapsed or remaining time0001
for the current step
Continue

Note

When the total test time is >1000 hours, then the total
test time will always be displayed as the elapsed time.

84

3-2. Program function
The LSG Series can create programs that are designed to step-through up to
16 pre-set load operations. The program function is a powerful tool that canallow you to perform a number of different operations in succession.
The execution time of each step is user-defined.
Programs can be chained together to make larger programs.
Up to 16 programs can be created for a program chain.
See page 71 for saving load operations (2-8.Save / Recall).

3-2-1. Program function Overview
Description

When you run a program, you are essentially executing
up to 16 different load operations consecutively. Each of
the different load operations are “steps” in the program. A
program starts at step 01 and ends at step 16.
A program recalls the operating mode, range,
static/dynamic mode, response speed and othersettings of each step from stored memory. It also
recalls the Go-NoGo settings.
The same memory settings can be used for multiple
steps.
The execution time of each step is configurable.
Applies the Go-NoGo settings for each step.
Each step must be executed in order.
Each step can be configured to automatically go to thenext step or wait for confirmation from the user before
proceeding to the next step.
Individual steps can be skipped.
Programs can be linked together to make program
chains.
Program chains need not be executed in order.
There are 16 steps to a program.
There are up to 16 programs to a chain.

85

Illustration

PROGRAM 1

STEP 01
STEP 02:
STEP 16

PROGRAM 2

STEP 01
STEP 02:
STEP 16

PROGRAM 3

STEP 01
STEP 02:
STEP 16

Setting Overview

A program contains the following settings for each step:
Memory:The memory location of the load operation
for the selected step (M001~M256).
Run:
Designates the run setting for the step
(Auto, Manual, Skip).
On-Time:Sets the On-time of the Step test time.
Off-Time:
Sets the Off-time of the Step test time.
P/F-Time:
Sets the testing pass/fail delay time for GoNoGo testing.
Short-Time: Sets the shorting time for the step, if any.
Below is a timing diagram of a single step in a program.
Timing Diagram for Single Step

P/ F Start Test Time (fixed)

Start of Step

P/ F End Test Time (fixed)

0.04s
P/ F Time
0.06s
Short-Time
On-Time
Off-Time
Step test time86

End of Step

3-2-2. Create a Program
Note

Before creating a program, it is necessary to set load
operation in internal memory (M001 - M256) to use foreach step, and to save it. See the save recall chapter for
further details, page 71 (2-8. Save / Recall).

Program Setting
Display Overview

Program

Step number inLOAD
selected RS232
program

01/Oct/2017
numberTiming Edit for Program
PROG: 01 STEP: 01
Memory M001
Run:
Skip
On-Time:
0.1
Program
Off

Operation
(1/2)

1.
2.
3.
4.

5.

ProgramChainsettings

Off-Time:
Off
P/F-Time:
Off
Short-Time: Off
RecallDefault

Previous
ProgramMenu
settings

Press FUNC .
Note: Program [F1] is off by default.
Select PROG and select a program number to edit.
PROG: 01 ~ 16
Select a STEP in the selected program.
STEP:
01 ~ 16
Select Memory and select which memory location toload for the selected step.
Settings loaded from the memory location will be
used for the selected step.
The same memory location can be used for multiple
steps.
Memory:M001 ~ M256
Set the Run setting for the step.
By default RUN is set to Skip.
The Auto setting will automatically start and go onto
the next step.
The Manual setting will wait for the user to press Next
[F2] before running the step.
Run:
Skip, Auto, Manual87

Operation(2/2)

Recall Default

6.

Choose the On-Time in seconds.
The on-time setting determines how long the load isturned on for the selected step.
The on-time is defined as the total test time minus theoff-time.
On-Time:0.1 ~ 60 seconds
7. Choose the Off-Time in seconds.
The off-time setting determines how long the load isturned off between the end of the current step and thestart of the next step.
The off-time is defined as the total test time minus theon-time.
Off-Time:
Off, 0.1 ~ 60 seconds
8. Choose the P/F-Time (pass/fail time) in seconds.
The P/F-Time refers to the P/F delay time. This delay
time includes the 0.06 P/F start test time, as shown in
the timing diagram on page 86.
P/F-Time:
Off, 0.0 ~ 119.9 seconds
9. Set the Short-Time in seconds.
Has the same action as pressing the short key. See
page 42 (2-1-10. Short Key Configuration) for details
about shorting the load.
Short-Time: Off, 0.1 seconds ~ On-Time
10. Repeat steps 3 to 9 for all the steps in the program.
A maximum of 16 steps per program can be created.
Steps that are not configured are set to “Skip” by
default.
11. Save [F3] to save the program and all the steps in the
program.
The program will be saved to internal memory.
See the Save/Recall chapter on details on how tosave to Setup memory.
Pressing Recall Default [F4] will recall the default settingsfor each program/step. See page 174 (7-3. LSG Series
Default Settings) for details.

883-2-3. Create a Program Chain
Note

Before creating a program chain, make sure a number ofprograms have already been saved. These will be used
to create the program chain.

Chain Setting
Display Overview

RS232 LOAD

01/Oct/2017
Starting program

for the chain
Program Chain Set

Start P01
P01
Off
P02
Off
P03
Off
P04
Off
SelectStart

Operation

RecallDefault

Previous
Menu

Press FUNC > Program [F1] > Chain [F2] in order.
If they were not created in the current session, it may
be necessary to load the programs from Setup
memory.
2. Press Select Start [F1] and select which program will
be used to start the program chain.
Start:
P01 ~ P16
3. Select P01 and choose which program will be linked
to P01.
Selecting OFF will end the chain after P01.
Selecting P01 will create an infinite chain.
Chains need not be linked in sequential order.
P01:
OFF, P01 ~ P16
4. Repeat step 3 for any remaining programs in the
chain.
5. Press Save to save the program chain to internal
memory.
Pressing Recall Default [F4] will reset the chain to thedefault settings. See page 174 (7-3. LSG Series Default
Settings) for details.
Recall Default [F4] will essentially clear the program
chain.
1.

89

3-2-4. Running the Program function
Description
Operation

Turn the road on, the program function is running.
1.

Press FUNC

2.

Turn program mode on by setting Program [F1] to on.
PROG will appear at the top of the LCD display when
Program is On.
Turn the load on.
See page 82 (3-1-2.Turning on the Load with the Selected
Function) for the load on.
The PROG icon turns orange when the load is turnedon.
When a program is running the screen displays which
program, step and memory is currently active.
Press Pause [F1] to suspend a test, press Continue[F1] to resume.
Press Next [F2] to run the next step if its Run setting
was set to Manual.
When a program has finished running, a list of the GoNoGo results for each step are displayed.
Press Exit [F5] to exit.

3.

4.

5.

Display:
Program
Running> Program [F1] in order.

RS232 PROG

01/Oct/2017

0.00 W

0.000 V
0.0000 A

Program number thatis currently running.

Run Program
Program No:
Step(Memory)

01
01(001) GO
Go-NoGo result
for the step

Step that is
Continue
currently running.
Memory numberof current step.

Display:
ProgramFinished

RS232 PROG

01/Oct/2017

Run Program Detail Result
Program
1
1
1

Step
1
2
3

Result
GO
GO
NG
Exit

90

3-3. Sequence function
The LSG Series supports both programs function and sequences function.
The essential difference between programs and sequences is that programs
can use different operating modes for each step while sequences use thesame operating mode throughout the whole sequence. In effect sequences areused to create complex load simulations.
There are two different types of Sequences, Normal Sequences function andFast Sequences function.
Normal sequences function can define the execution time and slew rate ofeach step.
On the other hand the execution time for each step in a fast sequence function
is fixed to the rate (Time Base setting) set by the user.

3-3-1. Normal Sequence function Overview
Description

A normal sequence is comprised of a user-defined
number of steps that when executed in sequence can beused to simulate a DC load.
Up to 1000 discrete steps can be configured using
normal sequences.
Each normal sequence can have a memo note
attached to it
Normal Sequences can be looped up to 9999 discrete
times or for an infinite amount of times.
Normal sequences can be configured to hold a set
voltage, current, power or resistance at the end of theload.
Normal Sequences can be linked together in a chain.

Illustration

Start Sequence

Sequence 1

Sequence 2::::
Sequence 10

91

STEP 01
STEP 02:
STEP NSTEP 01
STEP 02:
STEP NSTEP 01
STEP 02:
STEP N

Edit
Description

Normal Sequence configuration is split into Timing Editconfiguration and Data Edit configuration.
Timing Edit configuration is used to configure the actual
sequences, such as mode, range, loops and chains.
Data Edit configuration is used to create the actual steps
used in each sequence.
See below for a description of each.

Timing Edit
Overview
Setting
Start

A Normal Sequence contains the following timing settingsfor each sequence:
Setting Range
Description
S01 ~ S10
Sets which sequence are used tostart a chain of Normal Sequences.
S01 ~ S10
Sets the current sequence to edit.
12 characters
A user-created note for the currently
selected sequence.
CC, CR, CV, CP
Operating mode for the sequence.
+CV mode is supported.
ILVL
Low I range, Low V range
IMVL
Middle I range, Low V range
IHVL
High I range, Low V range
ILVH
Low I range, High V range
IMVH
Middle I range, High V range
IHVH
High I range, High V range
Infinite,
Sets the amount of times to loop the
01 ~ 9999
selected sequence.
OFF, ON
Set the load condition after the endof the sequence.
Value
The setting value of the load forwhen Last Load = ON.
Off, S01~S10
Sets the next sequence in the chain,
when not set to off.

Seq.No
Memo
Mode
Range

Loop
Last Load
Last
Chain

92

Data Edit
Overview
Setting
Step

Value

Time
Load
RAMP

Each step in a normal sequence contains the following
setting parameters:
Setting Range
Description
0001 ~ 1000
Selects and displays the current
step in the sequence.
The number of available steps isdependent on the number of steps
added using the Insert Point [F1]functions.
The current, voltage, power orresistance setting for the selected
operating mode.
0.05ms Sets the step time for the selected
999h:59m
step.
ON, OFF
Turns the load on or off for theselected step.
ON, OFF
When turned on the current
transition is evenly ramped from thestart of the step to the end of thestep.
When turned off the current
transition is stepped.
Ramp: ON
Input current

Time

Input current

Step time
Ramp: OFFTime

Step time93

TRIG OUT

ON, OFF

When TRIG OUT is set to ON, atrigger signal is output from the
TRIG OUT BNC terminal at the startof the step. See page 153 (4-1-16-1.
Trigger Signal Output) for details.
TRIG OUT: ON

Input current

Time
Start of step

PAUSE

ON, OFF

94

TRIG OUT
Pause: Inserts a pause at the endof the step.
When paused, the unit will pause at
the end of stepcurrent/voltage/resistance/power
level. The sequence can beresumed by pressing Next [F2] orby using an external trigger signal.
See page 150 (4-1-12. External
Trigger Signal) for details.

3-3-2. Timing Edit Configuration
Edit Timing
Display

Sequence number
01/Oct/2017
Start
sequence

RS232 LOAD

Timing Edit for Normal Sequence
Start S01 Seq.No: S01
Memo:
Mode:
Range:Loop:
N. Seq.
Off

Operation

No MemoCC Last Load: OFF
ILVL Last 0.000 mA
Infinity Chain:
Off

Edit
Sequence

Sequence settings

Previous
Menu

Press FUNC > Normal Sequence [F2] in order.
Note; N. Seq. [F1] is off by default.
2.
Select Start and select the number of the start
sequence.
Start:
S01 ~ S10
3.
Select a Seq. No. and select which sequence number
to edit.
Seq. No.:
S01 ~ S10
4.
Set the following parameters for the currently selectedsequence. See page 92 for details on each parameter.
Memo, Mode, Range, Loop
Last Load, Last, Chain
5.
Press Save [F3] to save the timing settings for thecurrently selected sequence.
Sequence Timing configuration is complete.
Go to Data Edit to edit the steps used in the Normal
Sequences. See page 96 (3-3-3. Data Edit Configuration).
Go to Running a Normal Sequence to run the normal
sequence. See page 97 (3-3-4. Running a Normal Sequencefunction).
1.

95

3-3-3. Data Edit Configuration
Data Edit
Display

Total number of steps
Activestep number
01/Oct/2017

RS232 LOAD

Data Edit for Normal Sequences
Step: 0001 / 0001
Value:
0.000 mA
Time: 000 H: 00 M: 00 S 0.05ms
LOAD:
OFF TRIG OUT OFF
RAMP:
OFF PAUSE:
OFF
InsertPoint

Operation

1.

DeleteStep settingsDelete
Save
Point
All Point

Press FUNC

Previous
Menu> Normal Sequence [F2] in order.

2.

Select Seq.No. and select the sequence you wish to edit.
Start:
S01 ~ S10
3.
Press Edit Sequence [F2] to enter the Data Editconfiguration menu.
Note; when there no steps in the current sequence the“Data Edit for Normal Sequence settings” is blank.
4.
Press Insert Point [F1], add a step of the sequence.
Every time Insert Point [F1] is pressed the new Step isincremented.
The inserted point becomes the current step.
5.
Set the following parameters for the currently selected
step. See the Data Edit Overview on page 93 forconfiguration details.
Value, Time, LOAD, RAMP, TRIG OUT, PAUSE
6.
If you wish to edit a previously inserted step, use the Stepparameter.
Steps can only be selected after they have already been
inserted.
Steps:
0001 ~ 1000
7.
The currently selected step can be deleted using the
Delete Point [F2] function.
8.
After all the steps for the sequence is complete, press
Save [F3] to save the steps.
Data Edit for Normal Sequence configuration is complete.
Go to Timing Edit for Normal Sequences to edit the sequence.
See page 95 (3-3-2.Timing Edit Configuration).
Go to Running a Normal Sequence to run the normal
sequence. Page 97 (3-3-4. Running a Normal Sequence function).

96

3-3-4. Running a Normal Sequence function
Description
Operation

Turn the road on, the Normal Sequence function is running.
1.

Press FUNC > Normal Sequence [F2] in order.

2.

Turn normal sequence mode on by setting
N. Seq. [F1] to on.
NSEQ will appear at the top of the LCD Display
when N. Seq. is On.
3.
Turn the load on.
See page 82 (3-1-2.Turning on the Load with the Selected
Function) for the load on.
The normal sequence function starts immediately.
The NSEQ icon turns orange when the load is turned on.
4. When a normal sequence function is running, the LCD
displays which sequence number, step number andnumber of loop are currently active. It also displays theelapsed or remaining test time and elapsed/remaining
time of the current step.
Sequences can be paused by pressing Pause[F1] andresumed again by pressing Continue[F1].
If no steps have been created “No N.Seq.” will be displayedon the screen.
“Sequence Complete” will be displayed at the end of thesequence.
Display:
Sequence
Running

Current step readback
measurements
RS232 NSEQ

01/Oct/2017

Run N.Seq.
0:00:05

0:00:46

Seq. No:
Step
Loop:

Step elapsed/Continue
remaining time

Note

Elapsed ortime for0.00 W remaining
the total test time

0.000 V
0.0000 A

01
0003
0001

Current sequence,
step and loop
numberThe combined test time for all sequences will be displayed
as elapsed test time if the elapsed time is >1000 hours, else
the remaining test time will be displayed.

97

3-3-5. Fast Sequence function Overview
Description

A fast sequence is comprised of a user-defined number ofsteps that can be executed at a high frequency. Unlike
normal sequences, each step in a fast sequence has thesame execution time (time base).
This mode is only available for CC and CR mode.
Up to 1000 discrete steps can be configured using fast
sequences.
Each fast sequence can have a memo note attached toit.
Fast Sequences can be looped up to 9999 discrete
times or for an infinite amount of times.
Fast sequences can be configured to hold a set current
or resistance at the end of the load.
No ramping function can be used with the Fast
Sequence function.

Illustration

Fast Sequence

Description

STEP 01
STEP 02:
STEP N

Loop:

Fast Sequence configuration is split into Timing Editconfiguration and Data Edit configuration.
Timing Edit configuration is used to configure all thesettings that are common to all the steps of the fast
sequence. This includes settings such as the mode,
range, loops and time base.
Data Edit configuration is used to create the actual steps
used in each steps.
See below for a description of each.

98Timing Edit
Overview
Setting
Memo
Mode
Range

Loop
Last Load
Last
RPTSTEPTime Base

A Fast Sequence contains the following timing settings
for sequence:
Setting Range
Description
12 characters
A user-created note for thecurrently selected sequence.
CC, CR
Operating mode for the sequence.
ILVL
Low I range, Low V range
IMVL
Middle I range, Low V range
IHVL
High I range, Low V range
ILVH
Low I range, High V range
IMVH
Middle I range, High V range
IHVH
High I range, High V range
Infinity,
Sets the amount of times to loop
01 ~ 9999
the selected sequence.
OFF, ON
Set the load condition after theend of the sequence.
0.000000 A
The load setting for when Last
Load is set to ON.
0001 ~ 1000
Last step number (0001~1000)
per loop
0.025 ~600ms
Sets the step execution time.

99

Data Edit
Overview
Setting
Step

Value
TRIG OUT

Each step in a fast sequence contains the following
setting parameters:
Setting Range
Description
0001 ~ 1000
Selects and displays the current
step in the sequence.
The number of available steps isdependent on the number ofsteps added using the Insert
Point [F1] functions.
A minimum of 3 steps.
The current or resistance setting
for the selected operating mode.
ON, OFF
When TRIG OUT is set to ON, atrigger signal is output from the
TRIG OUT BNC terminal at thestart of the step.
See page 153 (4-1-16-1. Trigger
Signal Output) for details.
TRIG OUT: ON
Input current

Time
Start of step

100

TRIG OUTFILL Overview

The FILL function is used to evenly step up the current or
resistance value settings from a starting step to afinishing step.
The Fill Function can be used before or after steps areadded to the fast sequence.
Before: Will pre-fill each value within the fill range whena new step is added.
After: Will post-fill each value within the fill range.
Setting value

Setting example

End_Value
FilledvaluesStart_Value

Step
Step
01

Step
02

Step
03

Step
04

Start_Step Filled steps End_Step

SettingStart_Value

Setting Range

Description
Sets the current or resistancevalue for the starting step.
Sets the current or resistancevalue for the ending step.
Sets the starting step number.
Sets the ending step number.

End_Value
Start_Step
End_Step

0001 ~ 1000
0001 ~ 1000101

3-3-6. Timing Edit Configuration
Edit Timing
Display

RS232 LOAD

01/Oct/2017

Timing Edit for Fast Sequence
Memo:
001
Mode: CC
Last Load: OFF
Range: ILVL
Last 0.000 mA
Loop: Infinity
RPTSTEP 0004
Time Base: 600.00 ms
F. Seq.
Off

Operation

Save

Edit
Sequence

Sequence

Previous
Menu

Press FUNC > Fast Sequence [F3] in order.
Note; F. Seq. [F1] is off by default.
2.
Set the following parameters for the fast sequence.
See page 99 for details on each parameter.
Memo, Mode, Range, Loop, Time Base
Last Load, Last, RPTSTEP
Press Save [F3] to save the timing settings for the fast
sequence.
Sequence Timing configuration is complete.
Go to Data Edit to edit the steps used in the Fast
Sequence. Page 103 (3-3-7. Data Edit Configuration).
Go to Running a Fast Sequence to run the fast
sequence. Page 105 (3-3-8. Running a Fast Sequencefunction).
1.

102

3-3-7. Data Edit Configuration
Data Edit Display

Total number of steps
Activestep number
01/Oct/2017

RS232 LOAD

Data Edit for Fast Sequences
Step: 0001 / 0005 RPT:0004
Value:
0.000 mA
TRIG OUT: OFF
Step settings
InsertPoint

Operation
(1/2)

1.

2.

3.

4.

5.

Delete
Point

Save

Fill

Previous
Menu

Press FUNC Fast Sequence [F3] > Edit Sequence[F2] in order to enter the Data Edit configuration
menu.
Press Insert Point [F1] to add a step to the sequence.
Every-time Insert Point [F1] is pressed the new Step
is incremented.
The newly inserted “Point” becomes the active step.
Set the following parameters for the currently selected
step. See page 100 for configuration details.
Value, TRIG OUT
If you wish to edit a previously added point/step, use
the Steps parameter.
Steps can only be selected after they have alreadybeen added.
Steps
0001 ~ 1000(RPTSTEP)
The currently selected step can be deleted using the
Delete Point [F2] function.
There cannot be less than 3 steps for fast sequences.

103

Operation(2/2)

FILL Display

6.

Presses FILL [F4] to use the fill function. Set the FILL
parameters. See page 101 for configuration details.
The fill function can be used any number of times.
Start_Value, End_Value, Start_Step, End_Ste
RS232 LOAD

01/Oct/2017

Fill Edit for Fast Sequences
Start_Value: 0.000 mA
End_Value: 10.002 mA
Start_Step
0001
End_Step
0010
Save

Save

Previous
Menu

After all the steps for the sequence are complete,presses Save [F3] to save the steps.
Data Edit for Fast Sequences configuration is complete.
Go to Timing Edit for Fast Sequences to edit thesequence. Page 102 (3-3-6. Timing Edit Configuration).
Go to Running a Fast Sequence to run the fast sequence.
Page 105 (3-3-8. Running a Fast Sequence function).

104

3-3-8. Running a Fast Sequence function
Description
Operation

Turn the road on, the Fast Sequence function is running.
1.

Press FUNC > Fast Sequence [F3] in order.

2.

Turn fast sequence mode on by setting
F. Seq. [F1] to on.
FSEQ will appear at the top of the display
when F. Seq. is on.
Turn the load on.
See page 82 (3-1-2.Turning on the Load with the Selected
Function) for the load on.
The fast sequence function starts immediately.
The FSEQ icon turns orange when the load is turnedon.
When a fast sequence is running, the screen displays
which step and loop is currently active.
“Sequence Complete” will be shown on the display atthe end of the sequence.

3.

4.

Display:
Fast Sequence
Running

RS232 FSEQ

01/Oct/2017

7.498 V 0.0825 W
mA
11.001
Current step number
Run F.Seq.
Step
Loop:

0023
0001

Current loop number

105

3-4. OCP Test function
Description

The OCP test function creates an automatic test to test the
OCP of power supply products.
This test will test to see when the over current protection of apower supply is tripped and return the measurements for thevoltage and current when the over current protection was
tripped. The LSG-H also has a user-defined cutoff setting in
the event that the power supply OCP fails.

The diagram below shows an example of the OCP Test function:
The test current increases from a starting value (Start C) to an end value(End C). The current increases in steps (set by Step C) with a set step time(set by Step T) until the power supply’s OCP is tripped or the End C current
level is reached.

106

3-4-1. OCP Test function setting parameters
Parameters

No.
Memo
Range
Start Current(Start C)
End Current(End C)

Step Current(Step C)
Step Time(Step T)
Delay Time(Delay)Selects one of 12 OCP test setup memories.
A user-created note for the currently
selected OPP function.
Select the Range of CC Mode.
(High, Middle, Low)
Starting start current value for the test.
The current value that will end the test.
The value must be higher than the OCP
value of the power supply you are testing.
This parameter is used as a fail-safe for if theover current protection of the power supply
fails.
If the measured current is reaches End
Current value it would then indicate that thepower supply OCP failed.
Sets the step resolution of the current.

Sets the execution time of each step. (50ms
to 1600s)
The OCP testing delay time.
Sets the how long to delay starting the test
after the Load On key has been pressed(5ms ~ 160ms).
Trig Voltage
Sets the trigger to a level needed to see(Trig V)when the power supply OCP has been
triggered.
When the power supply OCP has been
triggered, its voltage output will reset.
The voltage trigger level is used to test to
see if the voltage output has been reset.
Last Current
Sets the final current value after OCP has(last C)
been tripped.
This is the steady-state current draw after the
OCP has been tripped.
This mode can only be used under CC mode.
Note

107

3-4-2. OCP Test function setting
Operation

1.

Press FUNC

> OCP [F4] > OCP ON [F1] in order.

2.

Select No.: and select a test setup memory.
No.:
1 ~ 12
3.
Set the following parameters for the selected test setup
above.
See page 107 for details on each parameter.
Memo, Range, Start C, End C, Step C
Step T, Delay, Trig V, last C
Each setting parameters are saved in the internal memory.
Display108

3-4-3. Running a OCP Test function
Operation

Example:OCP Function
running

FUNC

1.

Press

> OCP [F4] > OCP ON [F1] in order.

2.

Turn the load on.
See page 82 (3-1-2.Turning on the Load with the Selected
Function) for the load on.
The test current will increase from the Start C value tothe End C value in steps according to the Step C
value, until the test has finished.
The test will start running when the power supply
voltage is greater than the Trig V voltage.

Measured voltage,
01/Oct/2017
current and power

RS232

1.15 W

7.498 V
0.1531 A
OCP Test
Running.

Set Curr:

Fetch Volt:

2.000
1.500
1.000

6.91
6.92
6.91

Set current for thelast three steps(descending order)
Measured voltage forlast three steps

109

OCP

3-4-4. Results of OCP Test function
Power Source
OCP tripped

The OCP Test will return the current setting of the last
step when the power supply’s OCP was tripped.

Indicating power supply
OCP was tripped.
RS232

01/Oct/2017

0.00 W

7.498 V
0.0000 A
OCP Test
Current：

OCP

Set Curr:

Fetch Volt:

2.000
1.500
1.000

6.91
6.92
6.91

2.500A

Step current setting on the loadwhen the power supply’s OCP
was tripped.
Power Source
OCP timeout

OCP time out will occur if the power supply’s OCP fails totrigger. This is determined when the measured voltage isless than Trig V and the measured current is greater than
End C.
RS232

01/Oct/2017

7.498 V
0.0000 A
Set Curr:
OCP Test
OCP time out 2.000

OCP

0.00 W
Fetch Volt:

6.91
6.92
1.500
6.91the
OCP time out1.000
indicates thatpower supply OCP was nottripped.

110

Power Source
Config Error

Config Error indicates that the power supply voltage isless than the Trig V voltage setting after the test has
started. This can indicate that the power supply output is
not on or that the power supply output or Trig V isincorrectly configured.
RS232 FSEQ

03/Oct/2018

0.00 V
0.000 AOCP Test
Config Error

0.00 w
Set Curr:

Fetch Volt:

Config Error indicates that upon
starting the power supply voltage isless than the Trig V voltage.

Note
Save Data

In addition to the OCP settings as described above, theTrig Voltage settings must also be set according to the
output characteristics of the power supply.
When the Power Source OCP was tripped. Press TEST
Result [F1] to view the test result waveform.

Plug in USB flash drive and press Save [F3] to save thewaveform picture.
Press Esc [F1] to exit the waveform view mode.
Press Save [F3] to save the data log to USB flash drive.
The file name should be RESULTxx.CSV. The file
RESULTxx.CSV can be opened in the computer.
The maximum amount of data to be recorded in the datalog is 65536. If data exceeds this limit, the extra data
won’t be recorded.

111

112

3-5. OPP Test function
Description

The OPP test function creates an automatic test to test the
OPP of power supply products.
This test will test to see when the over power protection of apower supply is tripped and return the measurements for thevoltage and current when the over power protection was
tripped. The LSG-H also has a user-defined cutoff setting in
the event that the power supply OPP fails.

The diagram below shows an example of the OPP Test function:
The test watt increases from a starting value (Start W) to an end value (EndW). The watt increases in steps (set by Step_W) with a set step time (set by
Step_T) until the power supply’s OPP is tripped or the End W watt level isreached.

Trig Voltage
OPP Watt
Trig Delay Time
Step Watt

Step Time
Last Watt
Start Watt113

3-5-1. OPP Test function setting parameters
Parameters

No.
Memo
Range
Start Watt
(Start W)
End Watt(End W)

Step Watt(Step W)
Step Time(Step T)
Trig Delay
Time(Delay)Selects one of 12 OPP test setup memories.
A user-created note for the currently selected
OPP function.
Select the Range of CP Mode.
(High, Middle, Low)
Starting start watt value for the test.
The watt value that will end the test.
The value must be higher than the OPPvalue of the power supply you are testing.
This parameter is used as a fail-safe for if theover power protection of the power supply
fails.
If the measured watt is reaches End Wattvalue it would then indicate that the power
supply OPP failed.
Sets the step resolution of the watt.

Sets the execution time of each step. (10ms
to 50s)
Sets a delay corresponding to the time a Trig
Voltage can be expected after each step
Watt is applied (the delay time must be lessthan the Step time).
Trig Voltage
Sets the trigger to a level needed to see(Trig V)when the power supply OPP has been
triggered.
When the power supply OPP has been
triggered, its voltage output will reset.
The voltage trigger level is used to test to
see if the voltage output has been reset.
Last Watt
Sets the final watt value after OPP has been(last W)
tripped.
This is the steady-state watt draw after the
OPP has been tripped.
This mode can only be used under CP mode.
Note

114

3-5-2. OPP Test function setting
Operation

1.

Press FUNC

> Next Manu [F5] > OPP [F1] in order.

2.

Select No.: and select a test setup memory.
No.:
1 ~ 12
3.
Set the following parameters for the selected test setup
above.
See page 114 for details on each parameter.
Memo, Range, Start W, End W, Step W
Step T, Delay, Trig V, last W
Each setting parameters are saved in the internal memory.
DisplayUSB

01/Oct/2018

OPP

OPP Function NO.: 01
Memo: No Memo
Range:
Low StepT:
0.10
Start W: 0.0000 Delay:
0.00
2.50
End W: 0.0001 Trig V:
Step W: 0.0001 last W: 0.0000
OPP
ON

PreviosMenu

115

3-5-3. Running a OPP Test function
Operation

1.
2.

Example:OPP Function
running

Press FUNC > Next Manu [F5] > OPP [F1] inorder, and Press OPP ON [F1] to turn OPP ON.
Turn the load on.
See page 82 (3-1-2.Turning on the Load with the Selected
Function) for the load on.
The test watt will increase from the Start W value tothe End W value in steps according to the Step W
value, until the test has finished.
The test will start running when the power supply
voltage is greater than the Trig V voltage.
USB

01/Oct/2018

OPP

10.03W
4.88 V 50.61
4.142 A
0:00:01
OPP Test
Running.

Fetch Watt: Fetch Volt:
10.03
4.91
0.00
4.92

Exit

116

3-5-4. Results of OPP Test function
Power Source
OPP tripped

The OPP Test will return the current setting of the last
step when the power supply’s OPP was tripped.
USB

01/Oct/2018

OPP

50.72W
4.81 V 50.61
10.530 A
0:00:07
OPP Test

Fetch Watt: Fetch Volt:
60.76
4.79
50.71
4.82
40.57
4.83
30.40
4.85

Watt:

50.71 W
TEST
ResultPower Source
OPP timeout

Exit

Save

OPP time out will occur if the power supply’s OPP fails totrigger. This is determined when the measured voltage isless than Trig V and the measured watt is greater than
End W.
USB

01/Oct/2018

OPP

4.81 V 50.61W
10.525 A
0:00:15
OPP Test
Time Out

Fetch Watt: Fetch Volt:
91.21
4.76
81.01
4.76
70.91
4.77
60.73
4.79
Exit

117

Power Source
Config Error

Config Error indicates that the power supply voltage isless than the Trig V voltage setting after the test has
started. This can indicate that the power supply output is
not on or that the power supply output or Trig V isincorrectly configured.
USB

01/Oct/2018

4.90 V
0.000 AOPP Test
Config Error

OPP

0.00 W
Fetch Watt: Fetch Volt:
0.00

4.91

Exit

Note
Save Data

In addition to the OPP settings as described above, theTrig Voltage settings must also be set according to the
output characteristics of the power supply.
When the Power Source OPP was tripped. Press TEST
Result [F1] to view the test result waveform.

Plug in USB flash drive and press Save [F3] to save thewaveform picture.
Press Esc [F1] to exit the waveform view mode.
Press Save [F3] to save the data log to USB flash drive.
The file name should be RESULTxx.CSV. The file
RESULTxx.CSV can be opened in the computer.
The maximum amount of data to be recorded in the datalog is 65536. If data exceeds this limit, the extra data
won’t be recorded.

118

119

3-6. BATT Test function
Description

The BATT test function creates an automatic test to test thedischarge of Battery products.
The test will discharge in a fixed mode (CC, CR, CP) and willend after a defined stop point (stop voltage, stop time, stopAH) has been detected. The information about discharge test
(discharge time, battery AH, battery WH) can be finally seenon the panel.
The LSG/LSG-H also has a user-defined cutoff setting in theevent that the Battery test fails.

The diagram below shows an example of the BATT Test function:
The test will run in the specified mode with defined values and will stop when
the defined stop values are reached.
Example: Discharge CC mode

VinStop Volt
Setting
CC modeBegin Discharge

Current
AH

t
0

SlewRate =Stop Time
Stop AH

120

SlewRate ?

Example: Discharge CR mode

VinStop Volt
Setting
CR modeBegin Discharge

Current
AH

t
0

SlewRate =Stop Time
Stop AH

SlewRate ?

Example: Discharge CP mode

Vin

Begin Discharge

Stop Volt
Setting
CP modeCurrent
AH

t
0

SlewRate =Stop Time
Stop AH

121

SlewRate ?

3-6-1. BATT Test function setting parameters
Parameters

BATT No.
Memo
Mode
Range

Setting

Slew Rate=
Slew Rate?
Stop Volt

Stop Time
Stop AH

Datalog timer

Selects one of 12 BATT test setup
memories.
A user-created note for the currently
selected BATT Test function.
Select a discharge operation mode. (CC,CR, CP)
Select I Range (High, Middle, Low)
and V Range (High, Low).
Example:ILVL(I range Low, V range Low)
Sets the values corresponding to thedefined discharging mode (CC mode in A,
CR mode in mS and CP mode in W).
Sets the test rising slew rate in mA/us (notadjustable for CP mode).
Sets the test falling slew rate in mA/us (notadjustable for CP mode).
Sets the voltage at which the test should
be interrupted. The value must be lower
than the battery start voltage.
Sets the time after which the test should beinterrupted (max value is 999h: 59m: 59s).
Sets the discharged energy rate at which
the test should be interrupted (Max value is9999.99Ah).
Sets the time interval for data capture (1～120 seconds). Up to 65,535 data can besaved when running data logging function.
When logging data reaches to the
maximum amount, it won’t be saved andbe ignored.

122

3-6-2. BATT Test function setting
Operation

1.

Press FUNC

> Next Manu [F5] > BATT [F2] in order.

2.

Set the following parameters for the selected test setup
above.
See page 122 for details on each parameter.
BATT No., Memo, Mode, Range, Setting
Slew Rate=, Slew Rate?
Stop Volt, Stop Time, Stop AH, Datalog timer
Each setting parameters are saved in the internal memory.

DisplayUSB

01/Oct/2018

BATT

BATT Function
BATT NO.:01
Memo:
No MemoMode:
CC
Range:
IHVH
Setting:
5.0000 A
BATT
ONPrevios
Menu

USB

01/Oct/2018

BATT

BATT Function
SlewRate
SlewRate
Stop Volt:
Stop Time:
Stop AH:

25.000 mA/us
25.000 mA/us
3.00 VOFF
0.20AhBATT
ONPrevios
Menu
USB

01/Oct/2018

BATT

BATT Function
SlewRate
25.000 mA/us
Stop Volt:
3.00 V
Stop Time:OFF
Stop AH:
0.20AhDatalog timer
1s
BATT
ON

PreviosMenu

123

3-6-3. Running a BATT Test function
Operation

1.

2.

Example:BATT Test
Function running

Press FUNC

> Next Manu [F5] > BATT [F2] inorder, and Press BATT [F1] to turn the BATT functionon.
Turn the load on.
See page 82 (3-1-2.Turning on the Load with the Selected
Function) for the load on.
The discharge test will keep running with its definedmode and values until any of the Stop Voltage, Stop
Time or Stop AH settings is detected.
USB

01/Oct/2018

BATT

24.47W
4.90 V 50.61
4.994 A
0:00:01
0.0024 Ah

0.0019 Wh

Discharging:

CC, IHVH, 5.0000 A
Stop: 3.00V, 0.20Ah
Exit

3-6-4. Results of BATT Test function
Description

Test stop for
Voltage tripped

The BATT Test will return the information of the lastdischarge when the Battery stop voltage or stop time orstop AH was tripped.
USB

01/Oct/2018

BATT

0.00W
2.95 V 50.61
0.000 A
0.0418 Ah

0.1778 Wh

Complete Discharging:

CC, IHVH, 5.0000 A
Stop Volt: 3.00V
TEST
Result

Save

124

Exit

Test stop fortime trippedUSB

01/Oct/2018

BATT

0.00W
4.92 V 50.61
0.000 A
0.0832 Ah

0.4077 Wh

Complete Discharging:

CC, IHVH, 5.0000 A
Stop Time: 0:01:00
TEST
Result

Test stop for
AH tripped

Exit

Save
USB

01/Oct/2018

BATT

0.00W
4.90 V 50.61
0.000 A
0:00:120.1000 Ah

0.4880 Wh

Complete Discharging:

CC, IHVH, 5.0000 A
Stop AH: 0.10Ah
TEST
Result

Note

Save

Exit

In addition to the BATT Test function settings as
described above, the Stop Volt Voltage settings must also
be set according to the output characteristics of thepower supply.

125

3-6-5. Save the Data for BATT Test function
Operation

1. When the Battery stop voltage, stop time or stop AH
was tripped. Press TEST Result [F1] to view the test
result waveform.
Press Esc [F1] to exit the waveform view mode.

2. Plug in USB flash drive and press Save [F3] to save thewaveform picture.
Press Save [F3] to save the data log to USB flash drive.
The file name should be RESULTxx.CSV. The file
RESULTxx.CSV can be opened in the computer.

126

3-7. MPPT
Background

Note
Features of thisfunction

The MPPT (Maximum Power Point Tracking) function of
LSG series can perform IV, PV characteristics and Pmax
tracking tests of solar panels.
The firmware Ver.1.29 or later is compatible with thisextended function. Operation is not supported.
It is possible to test the IV and PV characteristics of solar
panels.
I-V,P-V characteristic

Pow

Curr

Voltage
Curr

Pow

Furthermore, Pmax tracking test can be performed byturning on tracking.

Power
Time

Parameters

Test data is saved on USB memory. It supports USB
memory up to 2GB.
BATT No.
Set one of 12 test patterns.
Memo
A user-created note for the currently
selected BATT function.
Mode
Select a discharge operation mode.
(CC, CV)Range
Set the voltage and current range.
ILVL(I range low, V range low)
IMVL(I range middle, V range low)127

Response

Sweep Range

Start V(Start Voltage)

End V(End Voltage)

Step V(Step Voltage)

Start C(Start Current)

End C(End Current)

Step C(Step Current)

Step Time
Detect Short(Short Circuit
Detection)
Panel operation
1. Press

IHVL(I range high, V range low)
ILVH(I range low, V range high)
IMVH(I range middle, V range high)
IHVH(I range high, V range high)Set the response speed of eachdischarge mode.
CV mode: Slow, Fast
CC mode: 1, 1/2, 1/5, 1/10
Set the conditions for the sweep range.
CV mode: Value, Percent
CC mode: Value only
Response appears only in CV mode.
Set the start voltage value and its range
is from 0V to the maximum of thesetting voltage.
Response appears only in CV mode.
Set the end voltage value and its range
is from 0V to the maximum of thesetting voltage.
Response appears only in CV mode.
Set the step voltage value and its range
is from 0V to half of the maximum of
the setting voltage.
Response appears only in CC mode.
Set the start current value and its range
is from 0A to the maximum of thesetting current.
Response appears only in CC mode.
Set the end current value and its range
is from 0A to the maximum of thesetting current.
Response appears only in CC mode.
Set the step current value and its range
is from 0A to half of the maximum of thesetting current.
Set the step time and its range is from
0.01s to 50s.
“Disable” only.

FUNC> Next Manu[F5] > MPPT[F4].

128When CV mode is
set

129

When CC mode isset

2. Set the following parameters.
MPPT No.
Mode
Response
Start C (Start V)
Step C (Step V)
Detect Short (Disable only)

Memo
Range
Sweep Range
End C (End V)
Step Time

3-7-1. Edit Tracking of MPPT function
Background
Parameters

Set tracking the maximum power point of MPPT function.
Tracking
Enable/ Disable tracking the maximum
power point of MPPT function.
Track Step
Set the tracking range (0.01% to 5.00%).
Track Step
Set the tracking time (0.01s to 2.00 s).
Time
Pmax
Set the detection time of Pmax (maximum
Detection
power point) (OFF, 1m to 60m).
(Pmax
Redetecting can also be used when the
Detection
maximum power point is two.
Time Interval)

130

Measure
Set the measurement time interval (1.0s toInterval
60.0s).
(Measurement TimeInterval)
Panel operation

FUNC

1. Press
Tracking[F2].

> Next Manu[F5] > MPPT[F4] Edit

2. Set the following parameters.
Tracking
Track Step
Track Step Time
Pmax Detection
Measure Interval

3-7-2. Auto Load of MPPT function
Background
Parameters

Set start date and stop date of MPPT test.
Auto Load
Set the date and time of the test.
on/offDisableSet the tracking range (0.01% to5.00%).
Only Start
Set start date and time only.
Only Stop
Set stop date and time only.
EnableSet the start and stop date, start andstop time.

Panel operation
1. Press
Set[F3].

FUNC> Next Manu[F5] > MPPT[F4] Time

131

132

Start MPPT

2. Set the following parameters.
Auto Load on/off
Start Time
Stop Time
1. Insert a USB flash disk into USB port in the front
panel.
2. Press MPPT [F1] to enable this function to start thetest.
3. Press Shift + Load key to start the test.
Continue testing until the end conditions are met.

Example: MPPT
Function running

133

Example: MPPT
test results

To save the test result data, press Save [F3].
To see the graph of the maximum power point
tracking test, presss Detect P'max [F1].

To see the graph of the MPPT exam, Press MPPT
Result [F2].

134If you want to have a screen shot, press Save [F3].
Press Esc [F1] to exit.

3-7-3. Data file of test result
Background
Example: Test
conditions andresults file

Test result data is saved as a CSV file.

<DATE><Pmax Detection Method><Hill Climbing Method
Tracking><Measurement condition><MPPT TEST RESULTS>(1) Start Time(2) End Time
(3) MAX No.
(4) MAX Time
(5) MAX Voltage(6) MAX Current(7) MAX Power

Date of test
Settings contents for Pmax detection (in CVmode).
Setting contents of the hill climbing method.
Measurement status.
MPPT test results.
Test start time
Test end time
Number of measurement data
Time when Pmax is maximum
Voltage value when Pmax is maximum
Current value when Pmax is maximum
Power value when Pmax is maximum

135

Example: Results
file of IV and PV
characteristics test

< PMAX DETECTIONRESULTS >(1) Start Time
(2) MAX No.
(3) MAX Voltage(4) MAX Current(5) MAX Power(6) Short Circuit(7) Open Circuit(8) DATA Lists
No
VOLT(V)CURR(A)
POWER(W)

Pmax detection results.
Test start time
Data number when Pmax is maximum
Voltage value when Pmax is maximum
Current value when Pmax is maximum
Power value when Pmax is maximum
No search
Test start voltage
Number of measurement data
Measurement data number
Measured voltage value
Measured current value
Measured power value

136

Example: Results
file of MPPT test

(1) Start Time
(2) Stop Time
VOLT(V)CURR(A)
POWER(W)

Test start time
Test end time
Measured voltage value
Measured current value
Measured power value137

4. EXTERNAL CONTROL
4-1. Analog Control
The Analog Control subsection describes how to use the frame control ports
J1 for voltage or resistance control and the ports J3 for current/voltage monitor
output. The control ports J2, located under the frame control ports J1 is used
for parallel control. See page 176 (7-4.Frame Control Connector Contacts) for thedetails the frame control ports J1, J2 and J3.

4-1-1. The ports J1 /J3 Overview
4-1-1-1. The frame control ports J1
Description

WARNING

The J1 is a standard Mil 20 pin connector (OMRON XG4A
IDC plug). The connector is used for all analog control.
The pins are used to determine what mode is used.
See the appendix on page 176 to view the contact pin
assignment of the J1.
Some pins on the frame control connector have the samepotential as the front and rear terminals.
To prevent electric shock, ensure the cover for both theJ1 and J2 connector.

Pin Assignment

19 FRAME CONT 1
J1

20

2

J1 Pin assign
No
Name
1
Ext-V In / Ext-R In (+)
3
A COM
5
PRL In(+)
7
Ext-Load On(+)
9
I RangeCont0(+)
11 Ext Trigger In(+)
13 Load On Out(+)
15 I Range Status0(+)
17 STATUS COM
19 Short Signal Our(+)

No
2
4
6
8
10
12
14
16
18
20

138

Name
Ext-V In (+) for +CV
SUM I Mon Out
PRL In(-)
I RangeCont1(+)
Ext Alarm In(+)
A COM
I Range Status1(+)
Alarm Out(+)
NC
Short Signal Our(-)

4-1-1-2. The ports J3
Description
LSG-175H/350H/1050H OnlyWARNING

The wire connecting with the J3, please use AWG24~28.
Please peel the coating of the wire approximately 10mm.
Please insert a wire in the terminal hole while pushing the
button on the terminal hole of the J3.
See the appendix on page 178 to view the contact pin
assignment of the J3.
Please insert the wire in the terminal hole of the J3
deeply.
A conductor part of the wire, please do not come incontact with the frame and conductor part of other wire.
To prevent electric shock, ensure the cover for the J3.

Pin Assignment

J3 Pin assign
No Name1
I MON OUT
3
A COM

No
2
4

139

Name
V MON OUT
A COM

4-1-2. External Voltage Control - Overview
Description

Connection

External voltage control of the CC, CR, CV, CP andCx+CV mode is accomplished using the J1 on the rear
panel. An input voltage of 0~10V corresponds to 0% ~100% of the rated current (CC mode), rated voltage (CVand Cx+CV mode), or rated power (CP mode). For CR
mode, 0V ~ 10V corresponds to the maximum resistance~ minimum resistance.
When connecting the external voltage source to the J1,
use a ferrite core and use twisted pair wiring.

EXT-V

LSG
１

＋
－

J1
connector

Pin1 → EXT-V (+)
Pin3 → EXT-V (-)

3
Ferrite Core andtwisted wiring

CC,CV,CR,CP
EXT-V

Input
Terminals

LSG-H
2

＋
－

J1
connector

Pin2 → EXT-V (+)
Pin3 → EXT-V (-)

3
Ferrite Core andtwisted wiring+ CV only

Note

CautionInput
Terminals

The input impedance for external voltage control is 10kΩ.
Use a stable voltage supply for the external voltage
control.
When using external voltage control, make sure no morethan ±11V is applied across pins 1 and 3. Exceeding thisvoltage could damage the LSG Series.
Exceeding 11.8V will cause an EXT.OV alarm message
to appear which also will reset the voltage output to 0V
until the external voltage is reduced back down below
11.8V.
Use caution when using pin 3. Pin 3 is directly coupled to
the negative input terminal.

140

4-1-3. External Voltage Control – Operation
Description

CC ModeExternal voltage control can be used to control thecurrent, voltage, resistance and power for CC, CR, CV,
CP and Cx+CV modes. Configuration for each theoperating mode is the same.
Input current = rated current × (external voltage/10)
Input
Current

full scale adjusment

after adjusment

Rated
Current
0A
offset adjusment

0V

10V

External
Voltagebefore adjusment

CR ModeInput conductance =rated conductance × (external voltage/10)
Input
Conductancefull scale adjusment

after adjusment

Rated
Conductance
0S
offset adjusment

0V

10V

External
Voltagebefore adjusment

CV ModeCx+CV Mode

Input voltage = rated voltage × (external voltage/10)
Input
Voltagefull scale adjusment

after adjusment

Rated
Voltage
0V
offset adjusment

0V

10V
before adjusment

141

External
VoltageCP Mode

Input power = rated power × (external voltage/10)
Input
Power

full scale adjusment

after adjusment

Rated
Power
0W
offset adjusment

0V

10V

External
Voltagebefore adjusment

Operation

1.
2.
3.
4.

Turn off the power of LSG Series and the Power
source.
Connect the external voltage across pins 1 (or 2,+CV only) and 3 of the J1.
Turn on the power of the LSG Series.
Set the operating mode and range.
See page 33 (2-1.Basic Operation) for each mode andrange.

Press Main > Configure [F5] > Next Menu [F4] >External [F3] in order.
6. When you use External Voltage Control of CC, CR,
CV, CP mode. Set the Control parameter to V.
When you use External Voltage Control of +CV
mode. Set the Control parameter to V / R / Rinv
(Other than OFF). And set +CV Control parameter toON.
When you set the Control parameter in "OFF", External
Voltage Control of +CV mod does not active.
The J1 is now ready for external voltage control.
5.

Caution142

4-1-4. Adjust offset and full scale with variable resistor
Variable Resistor
in rear panel
LSG-175H/350H/
1050H only

VR1

VR2

VR3

VR4

FS

OS

FS

OS

CC/CR/CV/CP

Operation
CC, CR, CV, CP
Mode

Cx+CV Mode

1.

+CV

Apply a voltage of 1V to pin J1-1 based on thelevel of pin J1-3.
2. Turn VR2 with screwdriver to adjust the value to
10% of the rating in each the operating mode.
3. Apply a voltage of 10V to pin J1-1 based on thelevel of pin J1-3.
4. Turn VR1 with screwdriver to adjust the value to100% of the rating in each the operating mode.
5. Apply a voltage of 1V to pin J1-1 based on thelevel of pin J1-3.
6. Turn VR2 with screwdriver to adjust the value to
10% of the rating in each the operating mode.
Note: Re-adjustment is needed when you use a
different the operating mode, current range orvoltage range.
1. Apply a voltage of 1V to pin J1-1 based on thelevel of pin J1-3.
2. Turn VR4 with screwdriver to adjust the value to
10% of the rating in each +CV mode.
3. Apply a voltage of 10V to pin J1-2 based on thelevel of pin J1-3.
4. Turn VR3 with screwdriver to adjust the value to100% of the rating in each +CV mode.
5. Apply a voltage of 1V to pin J1-2 based on thelevel of pin J1-3.
6. Turn VR4 with screwdriver to adjust the value to
10% of the rating in each +CV mode.
Note: Re-adjustment is needed when you use a
different the voltage range.

143

4-1-5. External Resistance Control - Overview
Description

Connection

External resistance control of the CC, CR, CV and CP
modes is accomplished using the J1 on the rear panel.
A resistance of 0kΩ~10kΩ is used to control the input
current, voltage, resistance or power on the LSG Series.
The input can be configured to vary in proportion to theexternal resistance or the inverse. See page 145 (4-1-6.
External Resistance Control – Operation) for more details on
proportional and inverse resistance control.
When connecting the external resistance source to the J1
connector, use a ferrite core and use twisted pair wiring.
EXT-R
LSG
1

J1
connector

Pin3 → EXT-R

3
Ferrite Core andtwisted wiring

Note

Pin1 → EXT-R

Input
Terminals

Use resistors with minimum residual resistance of 50Ω or
less.
Note for proportional control:
Do not use swtiches that switch between fixedresistances.
Please use continuously variable resistors.
Exceeding 11.8kΩ will cause an EXT.OV alarm message
which will reset the voltage output to 0 until the external
resistance is reduced back down below 11.8kΩ.

144

4-1-6. External Resistance Control – Operation
Description

CC ModeExternal resistance control can be used to control the current,
voltage, resistance and power for CC, CR, CV and CP modes.
Configuration for each the operating mode is the same.
Proportional Control:
Input current = rated current × (external resistance/10).
Inverse Control:
Input current = rated current ×(1 - external resistance/10).
Input
Current

Inverse control

full scale adjusment

Proportional control
after adjusment

Rated
Current
0A
offset adjusment

0Ω

10kΩ

External
Resistance

before adjusment

CR ModeProportional Control:
Input conductance = rated conductance ×(external resistance/10).
Inverse Control:
Input conductance = rated conductance ×(1 - external resistance/10).
Input
ConductanceInverse control

full scale adjusment

Proportional control
after adjusment

Rated
Conductance
0S
offset adjusment

0Ω

10kΩ
before adjusment

145

External
ResistanceCV Mode

Proportional Control:
Input voltage = rated voltage × (external resistance/10).
Inverse Control:
Input voltage = rated voltage × (1 - external resistance/10).
Input
Voltage

Inverse control

full scale adjusment

Proportional control
after adjusment

Rated
Voltage
0V
offset adjusment

0Ω

10kΩ

External
Resistance

before adjusment

CP ModeProportional Control:
Input power = rated power × (external resistance/10).
Inverse Control:
Input power = rated power × (1 - external resistance/10).
Input
Power

Inverse control

full scale adjusment

Proportional control
after adjusment

Rated
Power
0W
offset adjusment

0Ω

10kΩ

External
Resistance

before adjusment

Note

Operation

The Inverse Control is recommended for safety reasons. In theevent that any of the cables become accidentaly
disconnected, the current/voltage/power input will drop to theminimum. Under similar circumstances using proportional
control, an unexpectedly high input would result.
1. Tur n off the power of LSG Series and the Power source.
2. Connect the external resistance across pins 1 and 3 of theJ1 connector.
3. Turn on the power of LSG Series.
4. Set the operating mode and range.
See page 33 (2-1.Basic Operation) for each mode and range.
Press Main > Configure [F5] > Next Menu [F4] >External [F3] in order.
6. Set the Control to R for proportional control or to Rinv forinverse control.
The J1 is now ready for external resistance control.
5.

146

4-1-7. Adjust offset and full scale with variable resistor
Variable Resistor
in rear panel
LSG-175H/350H/
1050H only

VR1

VR2

FS

OS

CC/CR/CV/CP

Operation
Proportional
control

Inversecontrol

Connect 1kΩ between J1-1 and J1-3.
Turn VR2 with screwdriver to adjust the value to 10%of the rating in each the operating mode.
3. Connect 10kΩ between J1-1 and J1-3.
4. Turn VR1 with screwdriver to adjust the value to100% of the rating in each the operating mode.
5. Connect 1kΩ between J1-1 and J1-3.
6. Turn VR2 with screwdriver to adjust the value to 10%of the rating in each the operating mode.
Note: Re-adjustment is needed when you use a different
the operating mode, current range or voltage range.
1. Connect 9kΩ between J1-1 and J1-3.
2. Turn VR2 with screwdriver to adjust the value to 10%of the rating in each the operating mode.
3. Connect 1kΩ between J1-1 and J1-3.
4. Turn VR1 with screwdriver to adjust the value to 90%of the rating in each the operating mode.
5. Connect 9kΩ between J1-1 and J1-3.
6. Turn VR2 with screwdriver to adjust the value to 10%of the rating in each the operating mode.
Note: Re-adjustment is needed when you use a different
the operating mode, current range or voltage range.
1.
2.

147

4-1-8. Turning the Load On using External Control
Description
Pin Inputs

The load can be turned on and off with an external switch
connected to pins 7 and 12 of the J1 connector.
Pin 7 of the J1 connector is internally pulled up to 5V with a
10kΩ resistor when the switch is open. Thus when the switch
is open, pin 7 is logically high. When the switch is closed, pin
7 is pulled down to the A COM ground level, making pin 7
logically low.

Connection

LSG+5V
Switch10kΩ
7Pin7→Ext-Load On(+)

Analogconnector

12

Pin12→A COM

A COM

ExampleThe Load On In setting determines whether the load isturned on when the external switch is closed (low) or open
(high).
High
LoadOn In = HighLow
High
LoadOn In = Low
Low
Load off

On

Load

Off
Load onOperation:
Configuration

Note

Press Main > Configure [F5] > Next Menu [F4] > External[F3] in order, and set the LoadOn IN setting.
Set to Low if you want the load to be turned on when theswitch is closed. Set to High if you want the load to turn on
when the switch is open.
When external control is used to turn the load off, the load
key cannot be used to turn the load on. However the reverse
is not true. If the load has been turned on by external control,
the load key can be used to turn the load off.

148

4-1-9. Load On/Off Status
Description
Pin out

Pins 13 and 17 (Load On Status) of the J1 connector is used
to monitor the load status (on or off).
The Load On Status pin is aphoto-coupled open-collector
13
output.

17
Photo-coupler input: 30V max, 8mA, max.

4-1-10. External Control of the Range
Description

Operation

Pin Inputs

The I Range for the present operating mode can be
externally controlled when the I Range is set to high range.
The range is changed using pins 8, 9 (Range Cont 1 &0) and
12 (A Com) of the J1 connector.
Press Main > Configure [F5] > Next Menu [F4] >External [F3] and set the Control setting to V, R or Riv toenable external control.
2. When externally controlling the range, the pin input
combination determines which range is chosen.
I Range
Pin 9
Pin 8
H
High
High
M
High
Low
L
Low
High
Pins 8 and 9 of the J1 connector are internally pulled up to
5V with a 10kΩ resistor when open. When closed, pin 8 and
9 are pulled down to the A COM ground level.
1.

LSG

Connection+5V
Switches

10kΩ
89Analogconnector

12
A COM

Note

The I Range can only be externally controlled when the I
Range has been set to High using the manual operation.

149

4-1-11. I Range Status
Description

Pin out

Pins 14 and 15 (Range Status 1&0) of the J1 connector
are used to monitor the current range status.
The pin out combination determines the current range
status.
I Range
Pin 14
Pin 15
H
Off
Off
M
Off
On
L
On
Off
The Range Status pins arephoto-coupled open14, 15
collector outputs.

17
Photo-coupler input: 30V max, 8mA, max.

4-1-12. External Trigger Signal
Description

Pin inputs

Pins 11 and 12 of the J1 connector are the trigger signal
inputs. The trigger signal is used to resume a sequence
after a pause. This action is useful to synchronize theexecution of a sequence with another device.
Pin 11 of the J1 connector is internally pulled down to A
COM with a 100kΩ resistor. To use the trigger input, an
active high 5V TTL pulse of 10us or more is required.

Connection

LSG
Analogconnector

Trigger input
signal
11

100kΩ
12

150

A COM

4-1-13. External Alarm input
Description

Pin Inputs

Pins 10 and 12 of the J1 connector are the alarm inputs.
An alarm can be activated/deactivated using external
control with the J1 connector. When the alarm isactivated, an EXT.AL message is also output. The alarm
can be activated by an external device or by a parallelslave unit.
The alarm is activated by sending a low-level signal. The
operating threshold level is TTL.
Pin 10 is internally pulled up to 5V with a 10kΩ resistor
when open. When closed, pin 10 is pulled down to the A
COM ground level.

Connection

LSG+5V
Switch10 kΩ
10Analogconnector

12
A COM

4-1-14. Alarm Status
Description
Pin out

Pins 16 and 17 of the J1 connector are used tomonitor whether the alarm is on or off.
The Alarm Status pin is aphoto-coupled opencollector output.

16
17

Photo-coupler input: 30V max, 8mA, max.

151

4-1-15. Short Control
Description

Pin Inputs

The Short Signal Out pins 19 and 20 of the J1 connector
are 30VDC 1A relay contact outputs. These outputs canbe used to drive an external relay to physically short theterminal outputs.
The Short Signal Out pins are normally opens until the
short function is activated.

Connection
External
relay driver

LSG
19
20

ON

J1
connector

ON

Input
Terminals

Note

The external relay driver is not a standard accessory.
Please provide your own external relay and driver circuit.

1524-1-16. Monitor Signal Output
4-1-16-1. Trigger Signal Output
Description

The trigger output signal is generated every time a switching
operation is performed (i.e., Dynamic mode) or when a Fast
or Normal Sequence is executed and the TRIG OUT
parameter is enabled.
The trigger output signal from TRIG OUT BNC is a 5V pulseof at least 2us with an impedance of 500Ω. The common
potential is connected to the chassis potential. The signal
threshold level is TTL.
TRIG OUT: ON
Input current
Start of stepor
Switch operation
Time

TRIG OUT

4-1-16-2. Current Monitor Output
Description

The voltage output from the IMON OUT terminal and fromthe IMON pin on the J3 connector is used to represent thecurrent input level.
The V Range used to represent the full scale current range
from the IMON OUT terminal and from the IMON pin on theJ3 connector depends on the I Range settings.
I MON voltage
10V or 1V

0V
0A

Monitor Connector
I MON OUT (BNC)
I MON (J3)

Input current
Rated current

I Range
H, L
M
H, L
M

153

Monitor Output Range
0 ~ 10V
0 ~ 1V0 ~ 10V
0 ~ 1VI MON OUT
BNC
Connector
J3 Connector

The IMON OUT BNC connector outputs a voltage of 0 ~ 10V
for the High and Low I Ranges and 0 ~ 1V for the Middle I
Range. The common potential is connected to the chassis
ground potential.
The voltage across pins 1 and 3 (or 4) outputs a voltage of 0
-10V for the High and Low I Ranges and 0 - 1V for the Middle
I Range. The common potential is connected to A COM(negative load terminal).

4-1-16-3. Voltage Monitor Output
Description
LSG-175H/
350H/1050H
only

The voltage output from the VMON OUT terminal and fromthe VMON pin on the J3 connector is used to represent thecurrent input level.
The V Range used to represent the full scale current range
from the VMON OUT terminal and from the VMON pin on theJ3 connector depends on the current range settings.
V MON voltage
8V or 10V

0V
0V

V MON OUT
BNC
Connector
J3 Connector

Input voltage
Rated voltage

Monitor Connector
V Range
Monitor Output Range
V MON OUT (BNC)H, L
0 ~ 8V
V MON (J3)H, L
0 ~ 10V
The V MON OUT BNC connector outputs a voltage of 0 - 8V
for the High and Low V Ranges. The common potential isconnected to the chassis ground potential.
The voltage across pins 2 and 3 (or 4) outputs a voltage of 0
-10V for the High and Low V Ranges. The common potential
is connected to A COM (negative load terminal).

154

4-2. Parallel Operation
The LSG Series can be connected in parallel to increase the total power
capacity of a single unit. The LSG Series can operate with up to 5 units inparallel. A single unit is designated as a master unit and any other connectedunits as slaves.
Only units of the same type and rating can be used in parallel or alternatively,
the LSG-2100S(H) booster pack can be used as a slave with the LSG-1050(H).
When a master unit is used in parallel operation, to ensure stability, theresponse speed will drop down to 1/2 if it was originally 1/1. You can however,reset the response speed back (or to another value) in the Main>Configuremenu.

4-2-1. Capacity of DC electronic loads
Model
LSG-175H

Single Unit 2 Units
3 Units
4 Units
5 Units
800V
800V
800V
800V
800V
8.75A
17.5A
26.25A
35A
43.75A
175W
350W
525W
700W
875W
LSG-350H
800V
800V
800V
800V
800V
17.5A
35A
52.5A
70A
87.5A
350W
700W
1050W
1400W
1750W
LSG-1050H
800V
800V
800V
800V
800V
52.5A
105A
157.5A
210A
262.5A
1050W
2100W
3150W
4200W
5250W
LSG-1050H
800V
800V
800V
800V
N/A
+ LSG157.5A
262.5A
367.5A
472.5A
2100HS*
3150W
5250W
7350W
9450W
* The LSG-2100SH booster packs do not have a control panel.
They can only be used as slaves with a single LSG-2100SH in parallel.
Model
LSG-175

Single Unit 2 Units
3 Units
4 Units
5 Units
150V
150V
150V
150V
150V
35A
70A
105A
140A
175A
175W
350W
525W
700W
875W
LSG-350
150V
150V
150V
150V
150V
70A
140A
210A
280A
350A
350W
700W
1050W
1400W
1750W
LSG-1050
150V
150V
150V
150V
150V
210A
420A
630A
1680A
1050A
1050W
2100W
3150W
4200W
5250W
LSG-1050
150V
150V
150V
150V
N/A
+LSG-2100S 630A
1050A
1470A
1890A
Boosters*
3150W
5250W
7350W
9450W
* The LSG-2100S booster packs do not have a control panel. They can only be
used as slaves with a single LSG-1050 in parallel.

155

4-2-2. Connection
Description

Note
Connection

The frame control ports J1 and J2 connectors are used
for control during parallel operation. Up to 5 units can beused in parallel.
Only the rear panel terminals can be used for parallel
operation, the front panel terminals have a lower current
rating and thus should not be used for parallel operation.
MASTER

Sense
wiring

+IN
-IN
+S
-S

Power
source
+OUT
-OUT

J1
J2

SLAVE1/
BOOSTER1
+IN
-IN
J1
+S
J2
-S

Load
wiringFerrite
cores

Frame
link
cable
(GTL-255）

SLAVE4/
BOOSTER4
+IN
-IN
J1
+S
J2
-S
No ferrite core
to last J1 connecter

Cautions

Only the rear terminals can be used for parallel
connections.
Make sure all connections are correct before turning on
the load. Incorrect connections could damage the units.
Only units of the same type and rating can be used inparallel (except for when the LSG-2100S(H) booster packis used with the LSG-1050(H)).
Ensure that wiring of sufficient gauge is used when using
parallel connections.
If using remote sense, only connect the master to thevoltage sense terminals.

156

4-2-3. Configuration
Description
Operation(1/2)

When using the multiple units in parallel all the basic settings
are adopted from the master unit.
1. Make sure all load units are turned off.
2. Make sure the power source is turned off.
3. Connect the load units to the power source.
Ensure the wire gauge is sufficient to handle the increasein current.
4. Connect the Master unit to the slave units via the J1 andJ2 connectors*.
Use the GTL-255 frame link cables Connect from:
M:J2⇔S1/B1:J1, S1/B1:J2⇔S2/B2:J1, S2/B2:J2 ･･･(M: Master, S: Slave, B: Booster, GTL-255: ⇔)Remove one ferrite core from the last frame link cable.
Remove the ferrite core that is closest to the J1
connector on the last slave unit or booster. See (page156) the diagram below for details.
5. Turn the load units on.
6.
7.
8.

On the designated master unit, press Main >Configure [F5] > Next Menu [F4] > Parallel [F1] in order.
Set the unit to Master with the Operation setting.
Assign the number of attached slave units or booster
units with the Parallel and Booster settings.
When connect the same model to parallel, set number by
Parallel setting. A maximum of 5 units can be used inparallel.
When connect LSG-1050H and LSG-2100SH to parallel,
set number by Booster setting.
A maximum of 4 boosters can be used with a single,
acting as a master unit.
RS232 LOAD

01/Oct/2017

Configure
Operation

MasterParallel
Booster

3
OFF

CV
8.75A
80V
Fast

Fine

Parallel

Knob

External

157

A Value
Previous
Menu

Operation
(2/2)

9.

On the slave units, press Main > Configure [F5] >Next Menu [F4] > Parallel [F1] in order,and set Operation to Slave.
RS232 LOAD

01/Oct/2017

Configure
Operation

Slave

CV
8.75A
80V
Fast

Parallel
Booster

3
OFF
Fine

ParallelCaution

Knob

External

A Value
Previous
Menu

When in Slave mode, all keys are locked, except for the
Scroll wheel and Enter key.
*Failing to remove the last ferrite core from the GTL-255
cable may reduce the stability of the units when used inparallel.

4-2-4. Turning the Load On
Description

Note
Operation

Operating the LSG Series in parallel operation is the same
as for single units.
When using the units in parallel, the load line inductancecould be increased or the stability of the units could be
reduced. It may be necessary to reduce the response
speed setting to increase stability.
1. Turn the slave and master units on.
2. Set the operation mode and settings on the master unit.
The master’s settings will be used by the slave units.
3. Turn the load on from the Master unit.
All measurements will be displayed and updated on the
Master unit only.

158

4-2-5. Disable Parallel operation
Description
Operation

To disable parallel operation, each unit must be set as a
“Master”.
1. Turn the power off on all the units and remove theGTL-255 frame link cables.
2. Turn the power back.
3.
4.
5.

On each unit, press Main > Configure [F5] > Next
Menu [F4] > Parallel [F1] in order.
Set the unit to Master with the Operation setting.
Turn the Parallel and Booster settings to off.

4-2-6. Connection using option plate
Description

This section explains how to connect in parallel using theoption plate.
To connect one LSG-1050/ LSG-1050H and four LSG2100S/SH, use PEL-005 to PEL-009 as shown below.

159

5. REMOTE CONTROLThis chapter describes basic configuration of IEEE488.2 based remote control.
For a command list, refer to the programming manual, downloadable fromTEXIO TECHNOLOGY website, www.texio.co.jp

5-1. Interface Configuration
5-1-1. Configure to USB Remote InterfaceUSB
configuration

Note
Operation

PC side connector
Type A, host
LSG Series side
Rear panel Type B, slaveconnector
Speed
2.0 (full speed)
USB Class
USB CDC ACM
If the COM port is not recognized when connecting via
USB, install the USB-CDC device driver.
Please copy the downloaded USB driver from our HP to
the appropriate folder.
1. Connect the USB cable to the rear panel USB B port.
Utility

2.
3.
4.

5.

Press Shift> Help> Interface [F3] in order,and set the Interface setting to USB.
If there is a request of the USB driver PC to recognize
the instrument, specify the USB-CDC driver.
In the device manager of PC, if it is not assigned tothe serial port is the instrument, please specify the
USB-CDC driver updates driver.
Please check the port number in Device Manager.

5-1-2. Configure RS-232C
RS-232C
Configuration

Operation

Connector
DB-9, Male
Baud Rate
2400, 4800, 9600, 19200, 38400
Stop Bit
1, 2
ParityNone, Odd, Even
1. Connect an RS-232C cable from the PC to the rear
panel RS232 port.
Utility2.
3.
Pin Assignment

Press Shift> Help> Interface [F3] in order,and set the Interface setting to RS232.
Set the Baud Rate, Stop Bit and Parity settings.
2: RxD (Receive data)12345
3: TxD (Transmit data)
5: GND4, 6 ~ 9: No connection

6789
160

PC Connection

Use a null modem cable as shown in the diagram below.
PC
LOAD
Pin2 RxD

RxD Pin2

Pin3 TxD

TxD Pin3

Pin5 GND

GND Pin5

5-1-3. Configure GP-IB Interface
To use GP-IB, the optional GP-IB port must be installed. See page 173 for
installation details (7-2.GP-IB Installation).
Operation
1. Ensure the LSG Series is off before proceeding.
2. Connect a GP-IB cable from a GP-IB controller to the
GP-IB port on the LSG Series.
3. Turn the LSG Series on.
Utility

Press Shift>> Interface [F3] in order,and set the Interface setting to GP-IB.
5. Set the GP-IB address.
GP-IB address
0~30
Maximum 15 devices altogether, 20m cable length, 2m
between each device.
Unique address assigned to each device.
At least 2/3 of the devices turned On.
No loop or parallel connection.
Help

4.

GP-IB
constraints

Pin Assignment

12

1

24

Pin
1-4
5
6
7
8
9
10
11
12

13

SignalData I/O 1-4
EOI
DAV
NRFD
NDAC
IFC
SRQ
ATN
SHIELD Ground

161

Pin
13-16
17
18
19
20
21
22
23
24

SignalData I/O 5-8
REN
Ground (DAV)
Ground (NRFD)
Ground (NDAC)
Ground (IFC)
Ground (SRQ)
Ground (ATN)
Single GND

5-1-4. Configure LAN Interface
LAN 設定Operation

Connector
RJ-45 AutoMDIx
Speck
IPv4, Socket, HTTP
DHCP
ON/OFFIP Address
000.000.000.000 - 254.255.255.255
Subnet Mask
000.000.000.000 - 255.255.255.255
Gateway
000.000.000.000 - 254.255.255.255
Port
Socket:2268、HTTP:80
1. Attach the LAN option to the LSG, connect the LAN
cable, and turn on the power. Check that the LED
next to the LAN connector flashes.
Utility

2.
3.
4.

Help

Shift

>
> Interface [F3],Pressand set the Interface setting to Ethernet.
Set the DHCP settings.
If DHCP is off, set the IP address, subnet mask, andgateway.
01/Oct/2017

Ethernet LOAD

Interface
Ethernet
Connection status
OnlineMAC
00-80-2f-20-4e-23
DHCP
ON
IP Address
192.168.1.100
Subnet Mask
255.255.255.0
SystemInfo

Load

Interface

01/Oct/2017

Time Set

Other

Ethernet LOAD

Connection status
OnlineMAC
00-80-2f-20-4e-23
DHCP
ON
IP Address
192.168.1.100
Subnet Mask
255.255.255.0
Gateway
192.168.1.1
System
Info

Note

Load

Interface

Time Set

Other

Set the IP address according to the IEEE802.3
standard.
We cannot provide support for IP settings.
If connecting to an existing network, have the network
administrator specify the address.
When connecting a controller such as a PC directly to
the LSG, turn off DHCP and specify a fixed IP.

162

5-1-5. RS-232C/USB Remote Control Function Check
Functionality
check

Note
Operation

Invoke a terminal application such as PuTTY or
RealTerm. For RS-232C and USB, set the COM port,
baud rate, stop bit, data bit, and parity accordingly.
To check the COM port number and associated portsettings, see the Device Manager in the PC. For
Windows:
Control panel → System → Hardware tab
If you are not familiar with using a terminal application to
send/receive remote commands from the serial port or via
a USB connection, please page 163 (5-1-5. Using RealTerm
to Establish a Remote Connection) for more information.
Run this query command via the terminal after the
instrument has been configured for
RS-232C (page 160) / USB (page 160) remote control.
*IDN?
This should return the Manufacturer, Model number,
Serial number, and Firmware version in the following
format.
TEXIO,LSG-H SERIES, XXXXXXXXXXXX, V.X.X.X.X

Note

For further details, please see the programming manual,available on the TEXIO TECHNOLOGY web site
www.texio.co.jp

5-1-6. Using RealTerm to Establish a Remote Connection
Description

Note

RealTerm is a terminal program that can be used tocommunicate with a device attached to the serial port of a
PC or via an emulated serial port via USB.
The following instructions apply to version 1.99.0.27.
Even though RealTerm is used as an example toestablish a remote connection, any terminal program canbe used that has similar functionality.
RealTerm can be downloaded on Sourceforge.net free ofcharge.
For more information please see
http://realterm.sourceforge.net/

163

Operation
(1/2)

1.
2.
3.
4.

5.
6.

Download RealTerm and install according to the
instructions on the RealTerm website.
Connect the LSG Series via USB (page 160) or via
RS-232C (page 160).
If using RS-232C, make note of the configured baudrate, stop bits and parity.
Go to the Windows device manager and find the
COM port number for the connection.
For example, go to the Control Panel > Device
Manager.
Double click the Ports icon to reveal the connected
serial port devices and the COM port for the eachconnected device.
If using USB, the baud rate, stop bit and parity
settings can be viewed by right-clicking connected
device and selecting the Properties option.
Start RealTerm from Desktop or Menu.
After RealTerm has started, click on the Port tab.
Enter the Baud, Parity, Data bits, Stop bits and Port
number configuration for the connection.
The Hardware Flow Control, Software Flow Control
options can be left at the default settings.
Press Open to connect to the LSG Series.

164

Operation
(1/2)

7.

Click on the Send tab.
In the EOL configuration, check on the +CR and +LF
check boxes.
Enter the query:*idn?
Click on Send ASCII.

8.

The terminal display will return the following:
TEXIO, LSG-XXXXH,EXXXXXXX,VX.XX.XXX(manufacturer, model, serial number, version)
If RealTerm fails to connect to the LSG Series, pleasecheck all the cables and settings and try again.

9.

165

5-1-7. GP-IB Function Check
Functionality
check

Note
Operation

Please use the National Instruments Measurement &Automation Controller software to confirm GP-IB
functionality.
See the National Instrument website, http://www.ni.com
NI-488.2 library is required for operation check.
For further details, please see the programming manual.
1.

Start the NI Measurement andAutomation Explorer (MAX) program.
Using Windows, press:
Start>All Programs>National Instruments>Measurement& Automation
2. From the Configuration panel access;
My System>Devices and Interfaces>GP-IB0
3. Press the Scan for Instruments button.
4. In the Connected Instruments panel the LSG Series
should be detected as Instrument 0 with the address
the same as that configured on the LSG Series.
5. Double click the Instrument 0 icon.

3

2

4
5
6.
7.

Click on Communicate with Instrument.
In the NI-488.2 Communicator window,
ensure *IDN? is written in the Send String: text box.
Click on the Query button to send the *IDN? query to
the instrument.

166

8.

The String Received text box will display the query
return:TEXIO, LSG-XXXXH,EXXXXXXX,VX.XX.XXX(manufacturer, model, serial number, version)

6

7
8

The function check is complete.

5-1-8. LAN Function Check (HTTP)
Operation

To check LAN communication, specify the IP address set
in the LSG from the PC web browser and display thepage.
If the IP is 192.168.1.100, specify http://192.168.1.100 as
the address and open it.
・Status Information
・Network Configuration
・Dimensions
・Operating Area167

5-1-9. LAN Function Check(Socket)
Background

Functionality
check

To test the socket server functionality, National Instruments
Measurement and Automation Explorer can be used.
Required NI-VISA
1. To start NI Measurement and Automation Explorer (MAX),
click the NI-MAX icon on the desktop.
2. From the Configuration panel access
My System>Devices and Interfaces>Network Devices
3. Press Add New Network Device>Visa TCP/IP Resource...

4. Select Manual Entry of Raw Socket from the popup window.

5. Enter the IP address and the port number of the PFR-100.
The port number is fixed at 2268.

6. Click the Validate button.
7. A popup will appear if a connection is successfully
established.

8. Click Next.

168

9. Next configure the Alias (name) of the PFR-100 connection.
Example：LSG_DC1

10. Click finish.

11. The IP address of the PFR-100 will now appear under
Network Devices in the configuration panel. Select this iconnow.
12. Press Open VISA Test Panel.

13. Click the Configuration icon.
14. Click on I/O Settings.
15. Make sure the Enable Termination Character check box ischecked, and the terminal character is \n (Value: xA).

169

16. Click Apply Changes.

17. Click the Input/Output icon.
18. Enter *IDN? in the Select or Enter Command dialog box if it
is not already.

19. Click the Query button.
20. The *IDN? query will return the Manufacturer, model name,serial number and firmware version in the dialog box.
TEXIO LSG-350,000000,V1.28

TEXIO,PFR-100L50,TW1234567,01.01.12345678

170

6. FAQ••••

The load voltage indicated on the load module is below expected.
The front panel keys are not working.
The load won’t turn on.
The performance does not match the specification

The load voltage indicated on the load module is below expected.
Ensure the load leads are as short as possible, twisted and use theappropriate wire gauge. Ensure that remote sense is used, this can help
alleviate the voltage drop across the load the leads.
The front panel keys are not working.
Check to make sure that the key lock has not been activated. LOCK will beshown on the panel when the screen is locked. Press Shift + Clear (Lock) to
unlock the keys.
The load won’t turn on.
If you are using the load key to try to turn the load on and the load won’t turnon, it is possible that external control is activated and that the LoadOn In
setting is set to low. See page 148 (4-1-8.Turning the Load On using External
Control) for details.
The performance does not match the specification.
Make sure the device is powered on for at least 30 minutes, within+20°C~+30°C. This is necessary to stabilize the unit to match the specification.

For more information, contact your local dealer or
TEXIO TECHNOLOGY at www.texio.co.jp

171

7. APPENDIX
7-1. Replacing the Dust Filter
Description

Procedure

The dust filter should be replaced twice a year.
Not replacing the filter will reduce performance and may
cause the LSG Series to malfunction.
1. Turn the LSG Series off completely at the rear panel
power switch.
Gently lift the grill up from the bottom.

2.

Remove the filter from the grill and replace with partnumber: PEL-010.

172

7-2. GP-IB/LAN Installation
Description

Procedure

GP-IB and LAN are the extra optional.
The following instructions describe how to install theoptional GP-IB card: PEL-004, LAN card: PEL-018 if
necessary.
1. Turn off the LSG Series.
2. Remove the two screws holding the cover on theoption bay.
3. Slide the optional card onto the rails in the optionbay.
4. Re-screw the screws back into place.

1737-3. Default Settings
The following default settings are the factory configuration settings.
Main Settings
Setup Memory Settings
Item
Panel Settings(all 100 sets)
Current(CC)0A
0A
Conductance(CR)0S
0S
Voltage(CV)Rated value
Rated value
Wattage(CP)
0W
0W
+CV
OFF
OFF
Current range
H
H
Voltage range
800 V /150V
800 V /150V
Load on/off
Load off
Load off
Operation mode
CC
CC
Maximum value
Maximum value
Slew rateof H rangeof H range
Settings above
Settings above
Preset memories
in each modein each mode
Main > Configure > Protection
Item

Panel Settings

OCP Level
OCP Setting
OPP Level
OPP Setting
UVP value
OVP value

Maximum value
LIMIT
Maximum value
LIMIT
OFF
OFF

Setup Memory Settings(all 100 sets)
Maximum value
LIMIT
Maximum value
LIMIT
OFF
OFF

Main > Configure > Other
Item

Panel Settings

Soft Start
Von Voltage
Von Latch
Von Delay
Response
Count Time(elapsed time display)
Cut Off TimeCR UnitDyna. Level
Dyna. Time
Mem.Recall
Short Key

OFF
0.0V
ON
2.0ms
1/1
OFF

Setup Memory Settings(all 100 sets)
OFF
0.0V
ON
2.0ms
1/1
OFF

OFF
mS
Value
T1/T2
DirectToggle

OFF
mS
Value
T1/T2
DirectToggle174

Main > Configure > Go-NoGo
Item

Panel Settings

SPEC. Test
Delay Time
Entry Mode

OFF
0.0s
Value
Maximum Voltage /Maximum Current
Minimum Voltage /Minimum Current

High
Low

Setup Memory Settings(all 100 sets)
OFF
0.0s
Value
Maximum Voltage /Maximum Current
Minimum Voltage /Minimum Current

Main > Configure > Next Menu > Parallel
Item

Panel Settings

Operation
Parallel
Booster

MasterOFF
OFF

Setup Memory Settings(all 100 sets)
MasterOFF
OFF

Main > Configure > Next Menu > Knob
Item

Panel Settings

StatusCCH Step
CCM Step
CCL Step
CRH Step
CRM Step
CRL Step
CVH Step
CVL Step
CPH Step
CPM Step
CPL Step

Step
Resolution
Resolution
Resolution
Resolution
Resolution
Resolution
Resolution
Resolution
Resolution
Resolution
Resolution

Setup Memory Settings(all 100 sets)
Step
Resolution
Resolution
Resolution
Resolution
Resolution
Resolution
Resolution
Resolution
Resolution
Resolution
Resolution

Main > Configure > Next Menu > External
Item

Panel Settings

Control+CV Control
LoadOn IN

OFF
OFF
OFF

Setup Memory Setting(all 100 sets)
OFF
OFF
OFF

175

7-4. Frame Control Connector Contacts
Frame control ports J1 （LSG-175H/LSG-350H/LSG-1050H）
Pin name
Pin number
Description
Ext-V In /1 Used for voltage/resistance control of CC, CR, CV
Ext-R In (+)
and CP mode.
0V to 10V corresponds to 0% to 100% of the rated
current (CC mode), rated voltage (CV mode), or
rated power (CP mode). 0V to 10V corresponds tothe maximum resistance to minimum resistance (CRmode)

Ext-V In (+) for
+CV

2

A COM

3

SUM I Mon Out

4

PRL In(+)

5

PRL In(-)

6

Ext-Load On(+)

7

I RangeCont1(+)
I RangeCont0(+)
Ext Alarm In(+)

8910

Ext Trigger In(+)

11

A COM

12

Load On Out(+)

13

0Ω to 10kΩ corresponds to 0% to 100% or 100% to
0% of the rated current (CC mode), rated voltage(CV mode), or rated power (CP mode). 0Ω to 10kΩ
corresponds to maximum resistance to minimum
resistance or minimum resistance to maximum
resistance (CR mode)
Used for voltage control of Cx+CV mode.
0V to 10V corresponds to 0% to 100% of the rated
voltage.
Connected to the negative load input terminal on therear panel.
Used during master/slave operation. Connected to
SUM I MON of the J2 connector.
Used during master/slave operation. Connected to
PRL OUT+ of the J2 connector.
Used during master/slave operation. Connected to
PRL OUT- of the J2 connector.
Turns on the load with low (or high) TTL level signal.
Pulled up the internal circuit to 5V using 10kΩ.
External range switch input*1 *2
Pulled up the internal circuit to 5V using 10kΩ.
Activates alarm with low TTL level signal input.
Pulled up the internal circuit to 5V using 10kΩ.
When paused, clears the pause when a low level
TTL signal is applied for 10us or longer.
Pulled down the internal circuit to A COM using
100kΩ.
Connected to the negative load input terminal on therear panel.
Turns on when load is on. Open collector output by aphoto-coupler.*4176

I Range
Status1(+)
I Range
Status0(+)
Alarm Out(+)

STATUS COM
NC
Short Signal Our(+)
Short Signal Our(-)

14 Range status output. *3
Open collector output by a photo-coupler.*4
15
16 Turns on when an alarm (OVP, OCP, OPP, OTP,
RVP, or UVP) is activated or when an external alarm
is applied. Open collector output by a photocoupler.*4
17 STATUS signal common for pins 13 to 16.
18
19 Relay contact output (30VDC/1A)
20*1

Valid only when the front panel settings are
H range.

*2
H range
M range
L range

RANGE CONT 01
10

RANGE CONT 1
101

H range
M range
L range

RANGE STATUS 0
OFF
OFF
ON

RANGE STATUS 1
OFF
ON
OFF

*3

*4

The maximum applied voltage of the photo-coupler is30V; the maximum current is 8mA.

177

J2 Connector
Pin name
N.C.
N.C.
N.C.
SUM I MONPRL OUT+PRL OUTLOAD ON/OFFCONTSLAVE RANGECONT 0SLAVE RANGECONT 0
N.C.
N.C.
A COM
N.C.
N.C.
N.C.
ALARM INPUT
A COM
N.C.
A COM
+15V
ALARM INPUT

Pin number
Description
12
3
4 Connect to SUM I MON of the J1 connector.
5 Used during master/slave operation. Connected to
PRL IN+ of the J1.
6 Used during master/slave operation. Connected to
PRL IN- of the J1.
7 "Turns on the load with low (or high) TTL level signal.
Pulled up the internal circuit to 5V using 10kΩ."
8 Used during master/slave operation. Connected to
RANGE CONT 1 of the J1 connector.
9 Used during master/slave operation. Connected to
RANGE CONT 0 of the J1 connector.
10
11
12 Connected to the negative load input terminal on therear panel.
13
14
15
16 Activates an alarm with high (or low) TTL level signal
input. Pulled up the internal circuit to 5V.
17 Connected to the negative load input terminal.
18
19 Connected to the negative load input terminal.
20 Controls the on/off of the load booster power(Cannot be used for multiple purposes).

Monitor Out ports J3（LSG-175H/LSG-350H/LSG-1050H）
Pin name
Pin number
Description
I MON
1 Current monitor output
10V f.s (H/L range) and 1V f.s (M range)
V MON
2 Voltage monitor output 10V f.s
A COM
3 Connected to the negative load input terminal.
A COM
4 Connected to the negative load input terminal.

178

Frame control ports J1（LSG-2100SH）
Pin name
Pin number
Description
N.C.
1
N.C.
2
A COM
3 Connected to the negative load input terminal.
SUM I MON
4 Connected to SUM I MON of the J2 connector.
PRL IN+
5 Connected to PRL OUT+ of the J2 connector.
PRL IN6 Connected to PRL OUT- of the J2 connector.
LOAD ON/OFF
7 "Turns on the load with low (or high) TTL level signal.
CONT
Pulled up the internal circuit to 5V using 10kΩ."
RANGE CONT 0
8 "External range switch input*1 *2
RANGE CONT 0
9 Pulled up the internal circuit to 5V using 10kΩ."
ALARM INPUT
10 Activates an alarm with high (or low) TTL level signal
input. Pulled up by the internal circuit to 5V.
N.C.
11
A COM
12 Connected to the negative load input terminal on therear panel.
N.C.
13
N.C.
14
N.C.
15
ALARM STATUS 16 Turns on when an alarm (OVP, OCP, OPP, OTP,
RVP, or UVP) is activated or when an external alarm
is applied. Open collector output by a photocoupler. *3
STATUS COM
17 STATUS signal common for pins 16.
N.C.
18
A COM
19 Connected to the negative load input terminal on therear panel.
+15V
20 Controls the on/off of the load booster power (cannot
be used for multiple purposes).
*1

Valid only when the front panel settings are
H range.

*2
H range
M range
L range*3

RANGE CONT 01
10

RANGE CONT 1
1
0
1

The maximum applied voltage of the photo-coupler is30V; the maximum current is 8mA.

179

Frame control ports J2 （LSG-2100S/SH）
Pin name
Pin number
Description
N.C.
1
N.C.
2
N.C.
3
SUM I MON
4 Connect to SUM I MON of the J1 connector.
PRL OUT+
5 Used during master/slave operation. Connected to
PRL IN+ of the J1.
PRL OUT6 Used during master/slave operation. Connected to
PRL IN- of the J1 connector.
LOAD ON/OFF
7 "Turns on the load with low (or high) TTL level signal.
CONT
Pulled up the internal circuit to 5V using 10kΩ."
SLAVE RANGE
8 Used during master/slave operation. Connected to
CONT 1RANGE CONT 1 of the J1 connector.
SLAVE RANGE
9 Used during master/slave operation. Connected to
CONT 0RANGE CONT 0 of the J1 connector.
N.C.
10
N.C.
11
A COM
12 Connected to the negative load input terminal on therear panel.
N.C.
13
N.C.
14
N.C.
15
ALARM INPUT
16 Activates an alarm with high (or low) TTL level signal
input. Pulled up the internal circuit to 5V.
A COM
17 Connected to the negative load input terminal.
N.C.
18
A COM
19 Connected to the negative load input terminal.
+15V
20 Controls the on/off of the load booster power(Cannot be used for multiple purposes).

180

7-5. Operating Mode Description
7-5-1. CC Mode
CC ModeWhen the unit is set to CC mode it will operate as a constantcurrent load when connected to a constant voltage source.
This means the unit will sink a designated amount of current,
up to the rated power level, regardless of the voltage.
This is illustrated below.
Voltage
Rated power level

Rated voltage

Maximum voltage in input possible

Constant current operation
Loadvoltage
CC setting value

CC+CV Mode

Current
Rated current

The unit will act as constant current operation after the load
voltage is greater than the +CV setting value. At the +CV
setting value, the unit works as a constant voltage operation.
This mode effectively creates a voltage ceiling before the unit
operates in CC mode.
The diagram below illustrates this.
Voltage

Constant voltage operation
Constant current operation
No current+CV settingvalue
CC setting value

Current

Note that when the load voltage is less than the +CV setting
value, no current will flow due to very high impedance.

181

7-5-2. CR ModeCR ModeWhen the unit is set to CR mode it will operate as a constantresistance load when connected to a constant voltage (CV) or
constant current (CC) source.
This means the unit will maintain a set resistance, up to therated power, regardless of the load voltage or current.
CV source : Load current = Load voltage / CR setting value
CC source : Load voltage = Load current x CR setting value
This is illustrated below.
Voltage

Rated power level

Rated voltage
Maximum voltage in input possible

Constant resistance operation
LoadvoltageLoadcurrent

CR+CV Mode

Current
Rated current
Maximum current in input possible

The unit will act as constant resistive operation after the input
voltage is greater than the +CV setting value. At the +CV
setting value, the unit works as a constant voltage operation.
This mode effectively creates a voltage ceiling before the unit
operates in CR mode.
The diagram below illustrates this.
Voltage

Constant voltage operation
Constant resistance operation
No current area

+CV setting
valueCurrent

Note that when the load voltage is less than the +CV setting
value, no current will flow due to very high impedance.

1827-5-3. CP Mode
CP ModeWhen the unit is set to CP mode it will operate as a constant
power operation when connected to a constant voltage
source.
This means the unit will maintain a set CP setting value, up to
the rated current or voltage level, regardless of the load
voltage. When load voltage changes, the unit responds bychanging the current load to maintain the set power levelaccordingly (P=IxV).
This is illustrated below.
Voltage

Rated power level

Rated voltage

Constant power operation

Current
Rated current

CP+CV Mode

The unit will act as a constant power operation after the load
voltage is greater than the +CV setting value.
At the +CV setting value, the unit works as a constant voltage
operation. This mode effectively creates a voltage ceilingbefore the unit operates in CP mode.
The diagram below illustrates this.
Voltage

Constant voltage operation
Constant power operation
No current area

+CV setting
valueCurrent

Note that when the load voltage is less than the +CV setting
value, no current will flow due to very high impedance.

183

7-5-4. CV Mode
CV ModeWhen the unit is set to CV mode it will operate as a constantvoltage operation when connected to a constant current
source.
This means the unit will maintain the CV setting value, up to
the rated power, regardless of the input current.
This is illustrated below.
Voltage

Rated power level

Rated voltage

Constant voltage operation
CV settingvalue

No current area

Loadcurrent

Current
Rated current
Maximum current in input possible

Note that when the load voltage is less than the +CV setting
value, no current will flow due to very high impedance.

7-6. LSG Operating Area
7-6-1. LSG-175
H Range184

M Range

L range

7-6-2. LSG-350
H range185

M Range

L Range

7-6-3. LSG-1050
H Range186

M Range

L Range

7-6-4. LSG-2100S

187

7-7. LSG-H Operating Area
7-7-1. LSG-175H
H Range

M Range

L Range188

7-7-2. LSG-350H
H Range

M Range

L Range189

7-7-3. LSG-1050H
H Range

M Range

L Range190

7-7-4. LSG-2100H
H Range

M Range

L Range191

7-8. LSG Series Specifications
The specifications apply when the LSG Series is powered on for at least 30
minutes to warm-up to a temperature of 20˚C to 30˚C, unless specified
otherwise. All specifications apply when using the rear panel terminals.
If the front panel terminals are used or if operating with long cables, remotesense must be connected to the terminals.
In parallel mode: All operation/settings/resolution specifications are xN. This
does not include voltage settings and measured values.
The maximum slew rate settings also don’t change.
N = Number of units in parallel (same model)
N = 1 + 2 x Number of units in parallel (Booster)

7-8-1. Rating
Model
LSG-175
Operating Voltage
1.5V~150V
Current
35A
Power
175W

LSG-350

LSG-1050

1.5V~150V

1.5V~150V

70A

210A

350W

1050W

7-8-2. Rating(LSG-2100S)
Voltage
1.5V-150V
Current
420A (H and M Range only)
Power
2100W
Current Setting Accuracy±(1.2% of set + 1.1% of f.s)
M range applies to the full scale of H range.

7-8-3. CC Mode
Model
LSG-175
Operating Range
H Range
0A~35A
M Range
0A~3.5A
L Range
0A~0.35A
Setting Range
H Range
0A~36.75A
M Range
0A~3.675A
L Range
0A~0.3675A
Default Setting
H Range0A
M Range0A
L Range0A

LSG-350

LSG-1050

0A~70A
0A~7A
0A~0.7A

0A~210A
0A~21A
0A~2.1A

0A~73.5A
0A~7.35A
0A~0.735A

0A~220.5A
0A~22.05A
0A~2.205A

0A
0A
0A

0A
0A
0A

192

Resolution
H Range
1mA
2mA
10mA
M Range
0.1mA
0.2mA
1mA
L Range
0.01mA
0.02mA
0.1mA
Accuracy of Setting
H, M Range ±(0.2 % of set + 0.1 % of f.s.*1) + Vin*2/500 kΩ
L Range±(0.2 % of set + 0.1 % of f.s.) + Vin*2/500 kΩ
Parallel±(1.2% of set +1.1% of f.s..*3)
Operation
Input Voltage Variation*4
2mA+ Vin*2/500kΩ 4mA+ Vin*2/500kΩ
10mA+ in*2/500kΩ
H Range
2mA+ Vin*2/500kΩ 4mA+ Vin*2/500kΩ
10mA+ Vin*2/500kΩ
M Range*2*2
0.1mA+ Vin /500kΩ 0.2mA+ Vin /500kΩ 0.6mA+ Vin*2/500kΩ
L Range
Ripple
RMS*5
3mA
5mA
20mA*7
P-P*6
30mA
50mA
100mA*7*1 Full scale of H range*2 Vin: input terminal voltage of electronic load
*3 M range applies to the full scale of H range*4 When the input voltage is varied from 1.5V to 150V at a current ofrated power/150V*5 Measurement frequency bandwidth: 10Hz to 1MHz
*6 Measurement frequency bandwidth: 10Hz to 20MHz*7 At measurement current of 100A

7-8-4. CR Mode
Model
LSG-175
Operating Range*1
23.3336S~400uS
H Range
M Range
L Range(42.857mΩ~2.5kΩ)
2.33336S~40uS(428.566mΩ~25kΩ)
0.233336S~4uS(4.28566Ω~250kΩ)

LSG-350

46.6672S~800uS
140.0016S~2.4mS(21.428mΩ~1.25kΩ) (7.1427mΩ~416.6667Ω)
4.6667S~80uS
14.0001S~242.4uS(214.28mΩ~12.5kΩ) (71.427mΩ~4.16667kΩ)
0.46667S~8uS
1.40001S~24.24uS(2.1428Ω~125kΩ)(714.27mΩ ~41.6667kΩ)

Setting Range
24.5S~0S
H Range
M Range
L Range
Resolution
H Range
M Range
L Range

LSG-1050

49.0S~0S(40.8163mΩ~OPEN) (20.408mΩ~OPEN)
2.45S~0S
4.90S~0S(408.1633mΩ~OPEN) (204.08mΩ~OPEN)
0.245S~0S
0.490S~0S(4.08163Ω~OPEN)(2.0408Ω~OPEN)

147.000S~0S(6.8027mΩ~OPEN)
14.70000S~0S(68.0272mΩ~OPEN)
1.4000S~0S(680.2721mΩ~OPEN)

400uS
40uS
4uS

2.4mS
240uS
24uS

800uS
80uS
8uS

193

Accuracy of Setting*2
H, M Range ±(0.5 % of set*3 + 0.5 % of f.s.*4) + Vin*5/500 kΩ
L Range±(0.5 % of set*3 + 0.5 % of f.s.) + Vin*5/500 kΩ*1 Siemens[S] = Input current[A] / Input voltage[V] = 1 / resistance[Ω]*2 Converted value at the input current. At the input current. It is not applied
for the condition of the parallel operation.
*3 set = Vin / Rset
*4 f.s. = Full scale of High Range*5 Vin = Input terminal voltage of electronic load

7-8-5. CV Mode
Model
LSG-175
LSG-350
LSG-1050
Operating Range
H Range
1.5V~150V
1.5V~150V
1.5V~150V
L Range
1.5V~15V
1.5V~15V
1.5V~15V
Setting Range
H Range
0V~157.5V
L Range
0V~15.75V
Resolution
H Range
10mV
L Range
1mV
Accuracy of Setting*1
H, L Range ±(0.1 % of set + 0.1 % of f.s.)
Input current variation*2
H Range
50mV
L Range
12mV*1 At the sensing point during remote sensing under the operating rangeof the input voltage. It is also applied for the condition of the parallel
operation.
*2 With respect to a change in the current of 10 % to 100 % of the rating
at an input voltage of 1.5 V (during remote sensing).

7-8-6. CP Mode
Model
LSG-175
Operating Range
H Range
17.5W~175W
M Range
1.75W~17.5W
L Range
0.175W~1.75W
Setting Range
H Range
0W~183.75W
M Range
0W~18.375W
L Range
0W~1.8375W
Resolution
H Range
10mW
M Range
1mW
L Range
0.1mW

LSG-350

LSG-1050

35W~350W
3.5W~35W
0.35W~3.5W

105W~1050W
10.5W~105W
1.05W~10.5W

0W~367.5W
0W~36.75W
0W~3.675W

0W~1102.5W
0W~110.25W
0W~11.025W

10mW
1mW
0.1mW

100mW
10mW
1mW

194

Accuracy of Setting*1±(0.6 % of set + 1.4 % of f.s.*2) + Vin*3/ 500kΩ*1 It is not applied for the condition of the parallel operation.
*2 M range applies to the full scale of H range.
*3 Vin = Input terminal voltage of electric load.

7-8-7. Slew Rate
Model
LSG-175
LSG-350
LSG-1050
Setting Range (CC Mode)
2.5mA/us~2.5A/us
5mA/us~5A/us
16mA/us~16A/us
H Range
250uA/us~250mA/us 500uA/us~500mA/us 1.6mA/us~1.6A/us
M Range
25uA/us~25mA/us
50uA/us~50mA/us
160uA/us~160mA/us
L Range
Setting Range (CR Mode)
250uA/us~250mA/us 500uA/us~500mA/us 1.6mA/us~1.6A/us
H Range
25uA/us~25mA/us
50uA/us~50mA/us
160uA/us~160mA/us
M Range
2.5uA/us~2.5mA/us
5uA/us~5mA/us
16uA/us~16mA/us
L Range
Resolution
2mA
6mA
Resolution 1mA
250mA/us~2.5A/us
500mA/us~5A/us
1.6A/us~16A/us
Setting
200uA
600uA
Resolution 100uA
25mA/us~250mA/us
50mA/us~500mA/us 160mA/us~1.6A/us
Setting
20uA
60uA
Resolution 10uA
2.5mA/us~25mA/us
5mA/us~50mA/us
16mA/us~160mA/us
Setting
2uA
6uA
Resolution 1uA
250uA/us~2.5mA/us
500uA/us~5mA/us
1.6mA/us~16mA/us
Setting
200nA
600nA
Resolution 100nA
25uA/us~250uA/us
50uA/us~500uA/us 160uA/us~1.6mA/us
Setting
20nA
60nA
Resolution 10nA
2.5uA/us~25uA/us
5uA/us~50uA/us
16uA/us~160uA/us
Setting
Accuracy of Setting*1±(10% of set + 5us)
*1 Time to reach from 10 % to 90 % when the current is varied from 2 %to 100 % (20 % to 100 % in M range) of the rated current.

7-8-8. Meter
Model
Voltmeter
H Range
L RangeAccuracy
Ammeter
H Range
M Range
L Range

LSG-175

LSG-350

LSG-1050

0.00V~150.00V 0.00V~150.00V
0.00V~150.00V
0.000V~15.000V 0.000V~15.000V 0.000V~15.000V±(0.1 % of rdg + 0.1 % of f.s.)
0.000A~35.000A
0.000A~3.5000A
0.00mA~350.00mA

0.000A~70.000A 0.00A~210.00A
0.000A~7.0000A 0.00A~21.000A
0.00mA~700mA 0.0mA~2100.0mA

195

Accuracy

Stand alone:
Parallel Operation:±(0.2% of rdg +0.3% of f.s *1)±(1.2% of rdg +1.1% of f.s.)

Wattmeter
0.00W~350.00W
0.00W~1050W
H, M Range 0.00W~175.00W
0.000W~52.500W
0.000W~ 105.000W 0.00W~315.00W
L(CC/CR/
CV mode)L(CP mode) 0.0000W~ 1.7500W 0.0000W~ 3.5000W 0.000W~ 10.500W
Temperature Coefficient per ºC
Voltmeter
100ppmAmmeter
200ppm*1 M range applies to the full scale of H range.

7-8-9. Dynamic Mode
Model
LSG-175
Operating Mode

LSG-350

LSG-1050

CC , CR , CP
T1 & T2
0.025ms ~ 10ms / Res: 1us
10ms ~ 30s/ Res: 1ms
Accuracy± 100ppm of setting
Frequency Range (Freq./Duty)
1Hz ~20kHz
Frequency Resolution
1Hz~9.9Hz
10Hz~99Hz
100Hz~990Hz
1kHz~20kHz
Frequency Accuracy of Setting

0.1Hz
1Hz
10Hz
100Hz

(0.5% of set)
Duty Cycle of Setting (Freq./Duty)
1% ~99% , 0.1% step
The minimum time width is 10 us. Between 1kHz and
20kHz, the maximum duty cycle is limited by theminimum time width.
Slew Rate Setting Range (CC Mode)
5mA/us~5A/us
16mA/us~16A/us
H Range 2.5mA/us~2.5A/us
M Range 250uA/us~250mA/us 500uA/us~500mA/us 1.6mA/us~1.6A/us
50uA/us~50mA/us
160uA/us~160mA/us
L Range 25uA/us~25mA/us
Slew Rate Setting Range (CR Mode)
H Range 250uA/us~250mA/us 500uA/us~500mA/us 1.6mA/us~1.6A/us
50uA/us~50mA/us
160uA/us~160mA/us
M Range 25uA/us~25mA/us
16uA/us~16mA/us
L Range 2.5uA/us~2.5mA/us 5uA/us~5mA/us

196

Slew Rate Resolution
Resolution 1mA
250mA/us~2.5A/us
Setting
Resolution 100uA
25mA/us~250mA/us
Setting
Resolution 10uA
2.5mA/us~25mA/us
Setting
Resolution 1uA
250uA/us~2.5mA/us
Setting
Resolution 100nA
25uA/us~250uA/us
Setting
Resolution 10nA
2.5uA/us~25uA/us
Setting
Slew Rate Accuracy of setting

2mA
500mA/us~5A/us
200uA
50mA/us~500mA/us
20uA
5mA/us~50mA/us
2uA
500uA/us~5mA/us
200nA
50uA/us~500uA/us
20nA
5uA/us~50uA/us

6mA
1.6A/us~16A/us
600uA
160mA/us~1.6A/us
60uA
16mA/us~160mA/us
6uA
1.6mA/us~16mA/us
600nA
160uA/us~1.6mA/us
60nA
16uA/us~160uA/us±(10% of set + 5us)
*1 Time to reach from 10 % to 90 % when the current is varied from 2 %to 100 % (20 % to 100 % in M range) of the rated current.
Current Setting Range
H Range
0A~36.75A
0A~73.5A
0A~220.5A
M Range 0A~3.675A
0A~7.35A
0A~22.05A
L Range
0A~0.3675A
0A~0.735A
0A~2.205A
Current Resolution
H Range
1mA
2mA
10mA
M Range 0.1mA
0.2mA
1mA
L Range
0.01mA
0.02mA
0.1mA
Current Accuracy±0.4% of f.s.
Resistance Setting Range
24.5S~0S
49.0S~0S
147.000S~0S
H Range
M Range
L Range(40.8163mΩ~OPEN) (20.408mΩ~OPEN)
2.45S~0S
4.90S~0S(408.1633mΩ(204.08mΩ~OPEN)~OPEN)
0.245S~0S
0.490S~0S(4.08163Ω~OPEN) (2.0408Ω~OPEN)

Resistance Resolution
H Range
400uS
M Range 40uS
L Range
4uS

800uS
80uS
8uS

(6.8027mΩ~OPEN)

14.70000S~0S(68.0272mΩ~OPEN)
1.4000S~0S(680.2721mΩ~OPEN)

2.4mS
240uS
24.0uS

Resistance Accuracy of setting (set*1 > 0.03% of f.s)
H, M Range ±(0.5 % of set*1 + 0.5 % of f.s.*2) + Vin*3/500 kΩ
L Range±(0.5 % of set*1 + 0.5 % of f.s.) + Vin*3/500 kΩ
*1 set = Vin / Rset
*2 f.s. = Full scale of High Range*3 Vin = Input terminal voltage of Electronic Load

197

Power Operating Range
H Range
17.5W~175W
35W~350W
105W~1050W
M Range
1.75W~17.5W
3.5W~35W
10.5W~105W
L Range
0.175W~1.75W
0.35W~3.5W
1.05W~10.5W
Setting Range
H Range
0W~183.75W
0W~367.5W
0W~1102.5W
M Range
0W~18.375W
0W~36.75W
0W~110.25W
L Range
0W~1.8375W
0W~3.675W
0W~11.025W
Resolution
H Range
10mW
10mW
100mW
M Range
1mW
1mW
10mW
L Range
0.1mW
0.1mW
1mW
Accuracy of Setting*1±(0.6 % of set + 1.4 % of f.s*2) + Vin*3/500kΩ*1 It is not applied for the condition of the parallel operation.
*2 M range applies to the full scale of H range.
*3 Vin = Input terminal voltage of electronic load.

7-8-10. Soft Start
Operation Mode
CC ,CR and CR
Selectable Time Range
1~ 200 ms/Res: 1ms
Time Accuracy±(30% of set + 100us)

7-8-11. Remote Sensing
Voltage that can be Compensated
2V for a single line

7-8-12. Protection Function
Model
LSG-175
LSG-350
LSG-1050
Overvoltage protection(OVP)
Turns off the load at 110% of the rated voltage
Overcurrent protection(OCP)
0.03 ~ 38.5A
0.06A ~ 77A
0.2A ~ 231Aor 110% of the maximum current of each range
Load off or limit selectable
Overpower protection(OPP)
0.1W ~ 192.5W
0.3W ~ 385W
1W ~ 1155W
or 110% of the maximum power of each range
Load off or limit selectable
Overheat protection(OTP)
Turns off the load when the heat sink temperaturereaches 95 °C

198

Undervoltage protection(UVP)
Turns off the load when detected. Can be set in the rangeof 0 V to 150 V or Off.
Reverse connection protection(RVP)
By diode. Turns off the load when an alarm occurs.
Rating overcurrent protection (R.OCP)
An R.OCP message will be produced when the input
current range is greater than 110% of the rated operating
current range (I range).
Rating overpower protection (R.OPP)
An R.OPP message will be produced when the input
power range is greater than 110% of the rated operating
power range.
Front panel input rating overcurrent protection (F.R.OCP)
An F.R.OCP message will be produced when the front
panel input current range is greater than 77A (Typical).

199

7-9. LSG-H Series Specifications
The specifications apply when the LSG-H Series is powered on for at least 30
minutes to warm-up to a temperature of 20˚C to 30˚C, unless specified
otherwise.
All specifications apply when using the rear panel terminals. If the front panel
terminals are used or if operating with long cables, remote sense must beconnected to the terminals.
In parallel mode: All operation/settings/resolution specifications are N times.
Slew rate maximum value, voltage setting and measured value are notchanged.
The maximum slew rate settings also don’t change.
N = Number of units in parallel (Same model on master)
N = LSG-1050H + 2 x Number of units in parallel (LSG-2100SH)

7-9-1. Rating (Master)
Model
LSG-175H
Operating Voltage
5V~800V
Current
8.75A
Power
175W

LSG-350H

LSG-1050H

17.5A

52.5A

350W

1050W

7-9-2. Rating (Booster)
Model
LSG-2100SH
Operating Voltage
5V~800V
Current
105A
Power
2100W
Current Setting Accuracy± (1.2% of set + 1.1% of f.s.)
NOTE:M range applies to the full scale of H range

200

7-9-3. CC Mode
Model
LSG-175H
LSG-350H
LSG-1050H
Operating Range
H Range
0A~8.75A
0A~17.5A
0A~52.5A
M Range
0A~0.875A
0A~1.75A
0A~5.25A
L Range
0mA~87.5mA
0mA~175mA
0A~0.525A
Setting Range
H Range
0A~9.1875A
0A~18.3750A
0A~55.126A
M Range
0A~0.91875A
0A~1.83750A
0A~5.5126A
L Range
0mA~91.875mA
0mA~183.750mA
0A~0.55126A
Default Setting
H Range
0A
0A
0A
M Range
0A
0A
0A
L Range
0mA
0mA
0A
Resolution
H Range
0.3mA
0.6mA
2mA
M Range
0.03mA
0.06mA
0.2mA
L Range
0.003mA
0.006mA
0.02mA
Accuracy of Setting
H, M Range± (0.2 % of set + 0.1 % of f.s.*1) + Vin*2/3.24 MΩ
L Range± (0.2 % of set + 0.1 % of f.s.) + Vin*2/3.24 MΩ
Parallel± (1.2% of set +1.1% of f.s..*3)
Operation
Input Voltage Variation*4
H Range
20mA+Vin*2/3.24MΩ
M Range
20mA+Vin*2/3.24MΩ
L Range
2mA+Vin*2/3.24MΩ
Ripple
RMS*5
2mA
4mA
12mA
P-P*6
20mA
40mA
120mA
*1 Full scale of H range*2 Vin: input terminal voltage of electronic load
*3 M range applies to the full scale of H range*4 When the input voltage is varied from 5V to 800V at a current of rated
power/800V*5 Measurement frequency bandwidth: 10Hz to 1MHz
*6 Measurement frequency bandwidth: 10Hz to 20MHz

201

7-9-4. CR Mode
Model
LSG-175H
LSG-350H
LSG-1050H
Operating Range*1
H Range
1.75S~30uS
3.5S~60uS
10.5S~180uS(571mΩ~33.3kΩ)(285mΩ~16.6kΩ)(95.2mΩ~5.55kΩ)
M Range
175mS~3uS
350mS~6uS
1.05S~18uS(5.71Ω~333kΩ)(2.85Ω~166kΩ)(952mΩ~55.5kΩ)
L Range
17.5mS~0.3uS
35mS~0.6uS
105mS~1.8uS(57.1Ω~3.33MΩ)(28.5Ω~1.66MΩ)(9.52Ω~555kΩ)
Setting Range
H Range1837.50mS~0mS
3675.00mS~0mS
11025.0mS~0mS(0.54422Ω~(0.27211Ω~(0.09070Ω~
33333.3Ω,OPEN)
16666.7Ω,OPEN)
5555.56Ω,OPEN)
M Range183.750mS~0mS
367.500mS~0mS
1102.50mS~0mS(5.44218Ω~(2.72109Ω~(0.90703Ω~
333333Ω,OPEN)
166666Ω,OPEN)
55555.6Ω,OPEN)
L Range18.3750mS~0mS
36.7500mS~0mS
110.250mS~0mS(54.4218Ω~(27.2109Ω~(9.07029Ω~
3333333Ω,OPEN)
1666666Ω,OPEN)
555555Ω,OPEN)
Resolution
H Range
30uS
60uS
180uS
M Range
3uS
6uS
18uS
L Range
0.3uS
0.6uS
1.8uS
Accuracy of Setting*2
H, M± (0.5 % of set*3 + 0.5 % of f.s.*4) + Vin*5/3.24MΩ
Range
L Range± (0.5 % of set*3 + 0.5 % of f.s.) + Vin*5/3.24MΩ
Parallel± (1.2% of set +1.1% of f.s.*4)
Operation*1 Siemens[S] = Input current[A] / Input voltage[V] = 1 / resistance[Ω]*2 Converted value at the input current. At the input current.
At the sensing point during remote sensing under the operating range ofthe input voltage.
*3 set = Vin / Rset
*4 f.s. = Full scale of High Range*5 Vin = Input terminal voltage of electronic load

202

7-9-5. CV Mode
Model
LSG-175H
LSG-350H
LSG-1050H
Operating Range
H Range
5V~800V
L Range
5V~80V
Setting Range
H Range
0V~840.00V
L Range
0V~84.000V
Resolution
H Range
20mV
L Range2mV
Accuracy of Setting*1
H, L Range± (0.2 % of set + 0.2 % of f.s.)
Input current variation*2
H, L Range
80mV*1 At the sensing point during remote sensing under the operating range of the
input voltage. It is also applied for the condition of the parallel operation.
*2 With respect to a change in the current of 10 % to 100 % of the rating at an
input voltage of 5 V (during remote sensing).

7-9-6. CP Mode
Model
LSG-175H
LSG-350H
LSG-1050H
Operating Range
H Range
17.5W~175W
35W~350W
105W~1050W
M Range
1.75W~17.5W
3.5W~35W
10.5W~105W
L Range
0.175W~1.75W
0.35W~3.5W
1.05W~10.5W
Setting Range
H Range
0W~183.75W
0W~367.50W
0W~1102.5W
M Range
0W~18.375W
0W~36.750W
0W~110.25W
L Range
0W~1.8375W
0W~3.6750W
0W~11.025W
Resolution
H レンジ
10mW
10mW
100mW
M レンジ
1mW
1mW
10mW
L レンジ
0.1mW
0.1mW
1mW
Accuracy of Setting*1±(0.6 % of set + 1.4 % of f.s.*2) + Vin2 *3/ 3.24MΩ*1 At the sensing point during remote sensing under the operating range of the
input voltage.
It is not applied for the condition of the parallel operation.
*2 M range applies to the full scale of H range.
*3 Vin = Input terminal voltage of electric load.

203

7-9-7. Slew Rate
Model
LSG-175H
Setting Range (CC Mode)
0.1400mA/us~
H Range
M Range
L Range

140.0mA/us
0.01400mA/us~
14.000mA/us
1.400uA/us~
1400.0uA/us

Setting Range (CR Mode)
0.01400mA/us~
H Range
M Range
L Range14.000mA/us
0.001400mA/us~
1.4000mA/us
0.1400uA/us~
140.00uA/us

LSG-350H

LSG-1050H

0.280mA/us~
280.0mA/us
0.0280mA/us~
28.00mA/us
2.80uA/us~
2800uA/us

0.840mA/us~
840.0mA/us
0.0840mA/us~
84.00mA/us
0.00840mA/us~
8.400mA/us

0.0280mA/us~
28.00mA/us
0.00280mA/us~
2.800mA/us
0.280uA/us~
280.0uA/us

0.0840mA/us~
84.00mA/us
0.00840mA/us~
8.400mA/us
0.000840mA/us~
0.8400mA/us

Resolution
Resolution
Setting

50uA/us
100uA/us
300uA/us
14mA/us~
28mA/us~
84mA/us~140mA/us
280mA/us
840mA/usResolution
5uA/us
10uA/us
30uA/usSetting
1.4mA/us~14mA/us 2.8mA/us~28mA/us 8.4mA/us~84mA/us
Resolution
0.5uA/us
1uA/us3uA/usSetting
140uA/us~
280uA/us~
840uA/us~
1.4mA/us
2.8mA/us
8.4mA/usResolution
50nA/us
0.1uA/us
0.3uA/us
Setting
14uA/us~140uA/us 28uA/us~280uA/us 84uA/us~840uA/us
Resolution
5nA/us
10nA/us30nA/usSetting
1.4uA/us~14uA/us
2.8uA/us~28uA/us
8.4uA/us~84uA/us
Resolution
0.5nA/us
1nA/us3nA/usSetting
0.14uA/us~
0.28uA/us~
0.84uA/us~
1.4uA/us
2.8uA/us
8.4uA/us
Accuracy of Setting*1±(10% of set + 25us)*1 Time to reach from 10% to 90% when the current is varied from 2% to 100%(20% to 100% in M range) of the rated current.

204

7-9-8. Meter
Model
Voltmeter
H Range
L RangeAccuracy
Ammeter
H Range
M Range
L RangeAccuracy

LSG-175H

LSG-350H

LSG-1050H

0.00V~800.00V
0.000V~80.000V± (0.1 % of rdg + 0.1 % of f.s.)
0.0000A~8.7500A

0.000A~17.500A

0.000A~52.500A

0.00000A~0.87500A
0.000mA~87.500mA

0.0000A~1.7500A
0.000mA~175.00mA

0.0000A~5.2500A
0.00mA~525.00mA

Stand alone:：±(0.2 % of rdg + 0.3 % of f.s*1)
Parallel Operation: ± (1.2% of rdg +1.1% of f.s.)

Wattmeter
H, M Range
0.00W~175.00W
0.00W~350.00W
0.0000W~56.875W
0.0000W~113.75W
L(CC/CR/
CV mode)0.0000W~1.7500W
0.0000~3.5000W
L(CP mode)
Temperature Coefficient (per ºC)
Voltmeter
100ppmAmmeter
200ppm*1 M Range applies to the full scale of H Range.

0.0W~1050.0W
0.000W~341.25W
0.000W~10.500W

7-9-9. Dynamic Mode
Model
LSG-175H
LSG-350H
LSG-1050H
Operating Mode
CC ,CR , CP
T1 & T2
0.025ms ~ 10ms / Res: 1us
10ms ~ 30s / Res: 1ms
Accuracy± 100ppm of setting
Frequency Range (Freq./Duty)
1Hz ~20kHz
Frequency Resolution
1Hz~9.9Hz
0.1Hz
10Hz~99Hz
1Hz
100Hz~990Hz 10Hz
1kHz~20kHz 100Hz
Frequency Accuracy of Setting(0.5% of set)
Duty Cycle of Setting (Freq./Duty)
1% ~99% , 0.1% step
The minimum time width is 10 us. Between 1kHz and 20kHz,
the maximum duty cycle is limited by the minimum time width.

205

Slew Rate Setting Range (CC Mode)
H Range
0.1400mA/us~
0.280mA/us~
0.840mA/us~
140.0mA/us
280.0mA/us
840.0mA/us
M Range0.01400mA/us~
0.0280mA/us~
0.0840mA/us~
14.000mA/us
28.00mA/us
84.00mA/us
L Range
1.400uA/us~
2.80uA/us~
0.00840mA/us~
1400.0uA/us
2800uA/us
8.400mA/us
Slew Rate Setting Range (CR Mode)
H Range0.01400mA/us~
0.0280mA/us~
0.0840mA/us~
14.000mA/us
28.00mA/us
84.00mA/us
M Range0.001400mA/us~
0.00280mA/us~
0.00840mA/us~
1.4000mA/us
2.800mA/us
8.400mA/us
L Range
0.1400uA/us~
0.280uA/us~
0.000840mA/us~
140.00uA/us
280.0uA/us
0.8400mA/us
Model
LSG-175H
LSG-350H
LSG-1050H
Slew Rate Resolution
Resolution
50uA/us
100uA/us
300uA/us
Setting
14mA/us~
28mA/us~
84mA/us~140mA/us
280mA/us
840mA/usResolution
5uA/us
10uA/us
30uA/usSetting
1.4mA/us~
2.8mA/us~
8.4mA/us~
14mA/us
28mA/us
84mA/usResolution
0.5uA/us
1uA/us3uA/usSetting
140uA/us~
280uA/us~
840uA/us~
1.4mA/us
2.8mA/us
8.4mA/usResolution
50nA/us
0.1uA/us
0.3uA/us
Setting
14uA/us~140uA/us 28uA/us~280uA/us 84uA/us~840uA/us
Resolution
5nA/us
10nA/us30nA/usSetting
1.4uA/us~14uA/us 2.8uA/us~28uA/us 8.4uA/us~84uA/us
Resolution
0.5nA/us
1nA/us3nA/usSetting
0.14uA/us~
0.28uA/us~
0.84uA/us~
1.4uA/us
2.8uA/us
8.4uA/us
Slew Rate Accuracy of setting *1±(10% of set + 25us)*1 Time to reach from 10 % to 90 % when the current is varied
from 2 % to 100 % (20 % to 100 % in M range) of the rated
current.
Current Setting Range
H Range
0A~9.1875A
0A~18.375A
0A~55.125A
M Range
0A~0.91875A
0A~1.8375A
0A~5.5125A
L Range
0mA~91.875mA
0mA~183.75mA
0A~0.55125A
Current Resolution
H Range
0.3mA
0.6mA
2mA
M Range
0.03mA
0.06mA
0.2mA
L Range
0.0003mA
0.006mA
0.02mA
Current Accuracy±0.4% of f.s.

206

ModelLSG-175H
LSG-350H
LSG-1050H
Resistance Setting Range
H Range1837.50mS~0mS
3675.00mS~0mS
11025.0mS~0mS(0.54422Ω~(0.27211Ω~(0.09070Ω~
33333.3Ω,OPEN)
16666.7Ω,OPEN)
5555.56Ω,OPEN)
M Range183.750mS~0mS
367.500mS~0mS
1102.50mS~0mS(5.44218Ω~(2.72109Ω~(0.90703Ω~
333333Ω,OPEN)
166666Ω,OPEN)
55555.6Ω,OPEN)
L Range18.3750mS~0mS
36.7500mS~0mS
110.250mS~0mS(54.4218Ω~(27.2109Ω~(9.07029Ω~
3333333Ω,OPEN)
1666666Ω,OPEN)
555555Ω,OPEN)
Resistance Resolution
H Range
30uS
60uS
180uS
M Range
3uS
6uS
18uS
L Range
0.3uS
0.6uS
1.8uS
Resistance Accuracy of setting (set*1 > 0.03% of f.s)
H, M Range±(0.5 % of set*1 + 0.5 % of f.s.*2) + Vin*3/3.24MΩ
L Range±(0.5 % of set*1 + 0.5 % of f.s.) + Vin*3/3.24MΩ
*1 set = Vin / Rset
*2 f.s. = Full scale of High Range*3 Vin = Input terminal voltage of Electronic Load
Power Operating Range
H Range
17.5W~175W
35W~350W
105W~1050W
M Range
1.75W~17.5W
3.5W~35W
10.5W~105W
L Range
0.175W~1.75W
0.35W~3.5W
1.05W~10.5W
Setting Range
H Range
0W~183.75W
0W~367.50W
0W~1102.5W
M Range
0W~18.375W
0W~36.750W
0W~110.25W
L Range
0W~1.8375W
0W~3.6750W
0W~11.025W
Resolution
H Range
10mW
10mW
100mW
M Range
1mW
1mW
10mW
L Range
0.1mW
0.1mW
1mW
Accuracy of Setting*1±(0.6 % of set + 1.4 % of f.s*2) + Vin2 *3/3.24MΩ*1 It is not applied for the condition of the parallel operation.
*2 M range applies to the full scale of H range.
*3 Vin = Input terminal voltage of electronic load.

207

7-9-10. Soft Start
Operation Mode
CC,CR
Selectable Time Range
OFF, 1~ 200ms / Res: 1ms
Time Accuracy±(30%of set + 100us)

7-9-11. Remote Sensing
Voltage that can be Compensated
2V for a single line

7-9-12. Protection Function
Model
LSG-175H
LSG-350H
LSG-1050H
Overvoltage protection(OVP)
Turns off the load at 110% of the rated voltage
Overcurrent protection(OCP)
0.0060A ~ 9.6252A

0.0120A ~ 19.2504A

0.050A ~ 57.750A

or 110% of the maximum current of each range
Load off or limit selectable
Overpower protection(OPP)
0.10W ~ 192.50W
0.10W ~ 385.00W
1.00W ~ 1155.00Wor 110% of the maximum power of each range
Load off or limit selectable
Overheat protection(OTP)
Turns off the load when the heat sink temperature reaches
105°C(LSG-2100SH：115°C).
Under voltage protection(UVP)
Turns off the load when detected. Can be set in the range ofOFF, 0.1V to 840V or Off.
Reverse connection protection(RVP)
By diode. Turns off the load when an alarm occurs.
Rating overcurrent protection (R.OCP)
An R.OCP message will be produced when the input current
range is greater than 110% of the rated operating current
range (I range).
Rating overpower protection (R.OPP)
An R.OPP message will be produced when the input power
range is greater than 110% of the rated operating power
range.

208

7-10. LSG/LSG-H Specifications
7-10-1. Sequence
Normal Sequence
Operation mode
Maximum number of steps
Step Execution TimeTime resolution

Fast Sequence
Operation mode
Maximum number of steps
Step Execution TimeTime resolution

CC, CR, CV, CP
1000
0.05ms ~ 999h 59min
0.05 ms (0.05ms ~1 min)
100 ms (1 min ~1 h)
1 s (1 h ~10 h)/10 s (10 h ~100 h)
1 min (100 h ~999 h 59 min)CC or CR
1000
25us – 600ms
1us(25us - 60ms)
10us(60.01ms - 600ms)

7-10-2. Other
Elapsed Time Delay
Measures the time from load on to load off. On/Off selectable.
Measures from 1s up to 999h 59min 59s
Auto Load Off Timer
Automatically turns off the load after a specified time elapses.
Can be set in the range of 1s to 999h 59min 59s or off
Communication Function
Command
Sets panel functions except the power switch and reads
setmeasured values.
Supports the SCPI and IEEE std. 488.2-1992 command set
Delimter:LF(0x0A)
GP-IB
IEEE std. 488.1-1978 (partial support)(Optional)
SH1, AH1, T6, L4, SR1, DC1, DT1.
RS-232C
D-SUB 9-pin connector (conforms to EIA-232-D)
Baud rate: 2400, 4800, 9600, 19200, 38400 bps
Data length: 8-bit, Stop bit: 1, 2-bit,
Parity bit: None, Odd, Even.
USB
Conforms to USB 2.0 Specifications and USB-CDC ACM
Communication speed 12Mbps (Full speed)
LAN
100BASE-TX, AUTO-MDIx, RJ-45,(Optional)
IPv4, DHCP ON/OFF,
Socket Port:2268, HTTP Port:80

209

7-10-3. Analog External Control
Load on/off Control Input
Turn on the load with low (or high) TTL level signal.
Load on Status Output
On when the load is on. (open collector output by a photo coupler)
Range Switch Input
Switch ranges L, M, and H using a 2-bit signal.
Range Status Output
Outputs range L, M, or H using 2-bit signal.
(open collector output by a photo coupler)
Trigger Input
Clear the sequence operation pause with a high TTL level signal for 10us or
more.
Alarm Input
Activate alarm with low TTL level signal input.
Alarm Status Output
On when OVP, OCP, OPP, OTP, UVP, RVP, or when an external alarm input
is applied. (open collector output by a photo coupler)
Short Signal Output
Relay contact output. (30VDC/1A)
External Voltage Control
Operates in CC, CR, CV, CP or Cx+CV mode.
0 V to 10 V correspond to 0 % to 100 % of the rated current (CC mode),
rated voltage (CV, Cx+CV mode), or rated power (CP mode).
0 V to 10 V correspond to maximum resistance to minimum resistance. (CRmode)
External Resistance Control
Operates in CC, CR, CV or CP mode.
0Ω to 10kΩ correspond to 0% to 100% or 100% to 0% of the rated current(CC mode), rated voltage (CV mode), or rated power (CP mode).
0Ω to 10kΩ correspond to maximum resistance to minimum resistance or
minimum resistance to maximum resistance. (CR mode)
Current Monitor Output
10V f.s. (H or L range) and 1V f.s. (M range)
Voltage Monitor Output
10V f.s.
Parallel Operation Input
Signal input for one-control parallel operation.
Parallel Operation Output
Signal input for one-control parallel operation.
Load Boost Power Supply Control
Power on/off control signal for the load booster.

210

7-10-4. Front Panel BNC Connector
TRIG OUT
Trigger output: Approx. 4.5V pulse width: Approx. 2us,
output impedance: Approx. 500Ω.
Outputs a pulse during sequence operation and switching operation.
I MON OUT
Current monitor output.
10V f.s. (H or L range) and 1V f.s. (M range)
V MON OUT (LSG-175H / 350H / 1050H)
Voltages monitor output.
8V f.s.

7-10-5. General
Model

LSG-175
LSG-175H

LSG-350
LSG-350H

LSG-1050
LSG-1050H

LSG-2100S
LSG-2100SH

Input Range
90VAC～132VAC/180VAC～250VAC ±10% Single-phase
Input Frequency
47～63HzPower (max)
90VA
110VA
190VA
230VA
Inrush Current
45A Max
Insulation ResistancePrimary to input terminal: 1000VDC, 20MΩ or more.
Primary to chassis: 1000VDC, 20MΩ or more.
Withstand Voltage
Primary to input terminal: No abnormalities at 1500VAC for 1
minute.
Primary to chassis: No abnormalities at 1500VAC for 1 minute.
Dimensions
W
213.8 mm
213.8 mm
427.8 mm
427.7 mmH
124.0 mm124.0 mm124.0 mm
127.8 mmD
400.5 mm
400.5 mm
400.5 mm553.5 mm
WeightApprox.
7.5kg
9kg
17kg
24kg
Maximum
9kg
10kg
20kg
28kg
Operation Environment
Temperature
0℃~40℃
Relative≤70%RH(no condensation)
Humidity
Storage Environment
Temperature-10℃~70℃
Relative≤80%RH(no condensation)
Humidity

211

一般仕様
Environment
LVD
EMC
Battery

Indoor, Altitude < 2000m,Overvoltage categoryⅡ
EN61010-1(Class1,Pollution 2),2014/35/EU Conformity
EN61326-1（Class A), 2014/30/EU Conformity
Litium metal type CR123A x 1

212

7-11. Dimensions
7-11-1. LSG-175/ LSG-175H/ LSG-350/ LSG-350H
エラー! 編集中のフィールド コードからは、オブジェクトを作成でき
ません。

213

7-11-2. LSG-1050 / LSG-1050H

124.0

Loc al

Mai n
Fil e

F UNC
Util ity

Help

Short

P7

Preset

7
P4

Shift

4
P1

1050W
1.5 - 150V
0 - 70A

I MON
OUT

TRIG
OUT

P8

P9

8

On/
Load Of
f

9

P5

P6

5

6

P2

P3

1

2

P0

C AL.

3

0

Lo ck

Clear

Ent er

143.8

441.4
427.8

400.5
464.4

7-11-3. LSG-2100S/SH

127.8
147.8

427.7
5.0

5.8

LINK

STBY

553.5
592.5

214

7F Towa Fudosan Shin Yokohama Bldg.
2-18-13, Shin Yokohama, Kohoku-ku, Yokohama, Kanagawa, 222-0033 Japan

https://www.texio.co.jp/