User Manual

SDM3045X Digital Multimeter
UM06034-E01A

2016 SIGLENT TECHNOLOGIES CO., LTD

SIGLENT

Copyright and Statement

Copyright
SIGLENT TECHNOLOGIES CO., LTD. All rights reserved.

Trademark Information
SIGLENT is registered trademark of SIGLENT TECHNOLOGIES CO., LTD.

Statement● SIGLENT products are protected by patent laws in and outside of the P.R.

China.
● SIGLENT reserves the rights to change the specification and price.
● Information in this publication replaces all previous corresponding
published material.
● Contents in this manual are not allowed to be copied, extracted ortranslated in any form or by any means without SIGLENT‟s permission.

SDM3045X Digital Multimeter

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General Safety Summary
Read the following safety precautions carefully to avoid any personal injuries
or damages to the instrument and any products connected to it. To avoid
potential hazards, please use the instrument as specified.
Use proper power line.
It‟s only allowed to use the special power line which is approved by local
state.
Ground the instrument.
The instrument is grounded through the protective terra conductor of thepower line. The ground conductor must be connected to the earth to avoid
electric shock. Make sure the instrument is grounded correctly before
connecting its input or output terminals.
Connect the signal wire correctly
The potential of the signal wire is equal to the earth, so do not connect thesignal wire to a high voltage.
Observe all terminal ratings
Please observe all ratings and sign instructions on the instrument to avoid fireor electric shock. Before connecting the instrument, please read the manual
carefully to gain more information about the ratings.
Do not operate with suspected failures
If you suspect that the product is damaged, please contact SIGLENT‟squalified service personnel to inspect it. Any repair and adjustment to the
product or replacing a component should be done by qualified personnel
only.
Avoid circuit or wire exposureDon‟t touch exposed contacts or components when the power is on.
Don’t operate without covers.
Don‟t operate the instrument with covers or panels removed.
Use proper fuse.
It‟s only allowed to use the specified fuse for the instrument.
Use proper over-voltage protection.
Make sure there is no over-voltage (like voltage caused by thunder andlightning) reaching to the instrument, otherwise the operator may suffer anelectric shock.
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Antistatic protection.
Static electricity will cause damages to the instrument, so test in antistatic
areas as far as possible. Ground its inner and outer conductors to release thestatic electricity temporarily before connecting the cable to the instrument.
Keep good ventilation.
Improper ventilation will cause the rise of the instrument‟s temperature. Keep
good ventilation and check the vent and fan regularly when using it.
Keep the surface of the instrument clean and dry.
Do not operate in wet or damp conditions.
Do not operate in flammable or explosive environment.
The disturbance test of all the models meets the limit values of A in thestandard of EN 61326-1:2013.
Input terminal protection limitation
Protection limitation is defined for the input terminal：
1. Main input（HI and LO）terminal
HI and LO terminals are used for Voltage, Resistance, Capacitance,Continuity, Frequency and Diode measurement. Two protection limitations
are defined: HI-LO protection limitation: 1000VDC or 750AVC. It‟s the maximum
measurable voltage. The limitation can be expressed as 1000Vpk.
 LO-ground protection limitation ： LO terminal can “float” 500Vpk
relative to the ground safely. The maximum protection limitation of HI terminal
relative to the ground is 1000Vpk. Therefore, the sum of the “float” voltage
and the measured voltage can‟t exceed 1000Vpk.
2. Sampling (HI Sense and LO Sense) terminal
HI Sense and LO Sense are used for 4-wire Resistance measurement. Twoprotection limitations are defined: HI Sense-LO Sense protection limitation: 200Vpk.


LO Sense-LO Sense protection limitation: 2Vpk.

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3. Current input (I) terminal
I and LO terminals are used for current measurement. The maximum
current which go through the I terminal is limited to 10A by the fuse on theback panel.
NOTE:
Voltage on the current input terminal corresponds to voltage on LO terminal.
To keep good protection, only use the fuse of specified type and level toreplace this fuse.

IEC Measurement Category II Over-voltage Protection
SDM3045X Digital Multimeter provides over-voltage protection forline-voltage mains connections meeting both of the following conditions to
avoid the danger of electric shock：

The HI and LO input terminals are connected to the mains under
Measurement Category II conditions as following.
The maximum line voltage of the mains is 300VAC.

WARNING:IEC Measurement Category II includes electrical devices connected to mains
at an outlet on a branch circuit, such as most small appliances, test
equipments, and other devices that plug into a branch outlet or socket.
SDM3045X is capable of making measurements with the HI and LO inputs
connected to mains in such devices (up to 300VAC) or the branch outlet itself.
However, the HI and LO terminals of SDM3045X can‟t be connected to mains
in permanently installed electrical devices such as the main circuit-breaker
panels, sub-panel disconnected boxes and permanently wired motors. Suchdevices and circuits are prone to exceed the protection limits of SDM3045X.

NOTE:
Voltages above 300VAC only can be measured in circuits that are isolated
from mains. However, there may be transient over-voltage in circuits that are
isolated from mains. SDM3045X is able to withstand occasional transient
over-voltage up to 2500Vpk. Please don‟t use this instrument to measurecircuits that transient over-voltage may exceed this level.

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Safety Terms and Symbols
Terms in this manual. Terms may appear in this manual.
WARNING: Warning statements indicate the conditions andbehaviors that could result in injury or loss of life.

CAUTION: Caution statements indicate the conditions andbehaviors that could result in damage to this product or otherproperties.
CAT I (1000V): IEC Measurement Category I. The highest
measurable voltage is 1000Vpk in the HI-LO terminal.
properties.
CAT II (300V): IEC Measurement Category II. Inputs may beconnected to mains (up to 300VAC) under Category II overvoltage
conditions.
properties.

Terms used on the instrument. Terms may appear on the instrument:
DANGERWARNINGCAUTION

indicates an injury or hazard that may immediately happen.
indicates an injury or hazard that may not immediately happen.
indicates that a potential damage to the instrument or otherproperty might occur.

Symbols used on the instrument. Symbols may appear on the instrument.

Hazardous
Voltage

Protective Earth
GroundWarning

Test
GroundChassisGroundSDM3045X Digital Multimeter

VSIGLENT

Introduction of SDM3045X
SDM3045X is a 4½ dual-display instrument designed with 4½ digits readings
resolution and dual-display, especially fitting to the needs of high-precision,
multifunction, and automation measurements. It realized a combination ofbasic measurement functions, multiple math functions, and display functions,etc.
SDM3045X holds a 4.3 inch color TFT-LCD display screen. Its clear keyboard
layout and operation hints make it easier and agility to use. Besides, it
supports multi-interface such as USB Device,USB Host and LAN, which canmeet users‟ demand furthest.

Main Features:

4.3 inch color TFT-LCD display screen with 480*272 high resolutions

Real 4½ digits readings resolutionUp to 150rdgs/S measurement speed

True-RMS AC Voltage and AC Current measurements



1 Gb Nand Flash size, mass storage configuration files and data files



Built-in cold terminal compensation for thermocoupleSupport standard SCPI and control software on PC, compatible withcommands of main stream multimetersSupports dual-display function, Chinese and English menu

Built-in help system, convenient to acquire information

Support USB Device, USB Host and LAN interfacesConfiguration and measured data can be imported or exported via VXI 11,
USBTMC and USB flash drive, which is convenient for users to modify,
view and backup

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Abstract
The manual mainly introduces corresponding information of operating theSDM3045X Digital Multimeter. It contains these chapters:
Chapter 1
Quick Start
Guide you to prepare the SDM3045X Digital Multimeter and know about the
Front/Back panel and user interface.
Chapter 2
Function and Operation
Introduce the functions and operations of SDM3045X in details.
Chapter 3
Application Examples
Introduce you how to use strong measurement functions of this instrument
easily through some examples.
Chapter 4
Measurement Tutorial
Guide you to eliminate the errors that may appear during your measurement
and obtain accurate result.
Chapter 5General Troubleshooting
Provide you some general troubleshooting.
Chapter 6
Appendix
Provide you information about accessories, warranties, troubleshooting,
services and supports.

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Content
Copyright and Statement ............................................................................... IGeneral Safety Summary .............................................................................. II
Safety Terms and Symbols .......................................................................... V
Introduction of SDM3045X .......................................................................... VI
Abstract ....................................................................................................... VII
Content ....................................................................................................... VIII
Chapter 1
Quick Start ................................................................................ 1
General Inspection .................................................................................... 2
To adjust the Handle ................................................................................. 3
Front Panel ............................................................................................... 4
Back Panel................................................................................................ 5
Power On .................................................................................................. 6
User Interface ........................................................................................... 7
Chapter 2
Function and Operation ........................................................... 8
To Select Measurement Range ................................................................ 9
To Select Measurement Speed .............................................................. 11
Basic Measurement Functions................................................................ 12
To Measure DC Voltage .................................................................. 13
To Measure DC Current .................................................................. 15
To Measure AC Voltage .................................................................. 17
To Measure AC Current................................................................... 19
To Measure 2-Wire/4-Wire Resistance ............................................ 21
To Measure Capacitance................................................................. 25
To Measure Frequency or Period .................................................... 27
To Test Continuity............................................................................ 31
To Test Diode .................................................................................. 33
To Measure Temperature ................................................................ 35
Measurement Parameters ...................................................................... 39
DC Input Impedance ........................................................................ 39
DC input impedance selection:................................................................... 39
Short-circuit Resistance ................................................................... 40
Short-circuit Resistance: ............................................................................ 40
Dual-display Function ............................................................................. 41
Utility Function ........................................................................................ 43
Store and Recall .............................................................................. 44
Manage File ..................................................................................... 46
I/O Configuration ............................................................................. 48
Board Test ....................................................................................... 50
System Setup .................................................................................. 53
Firmware Update ............................................................................. 55
Acquire.................................................................................................... 56
Auto Trigger ..................................................................................... 57
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Sample Count ............................................................................................... 57
Single Trigger .................................................................................. 58
External Trigger ............................................................................... 59
Help System ........................................................................................... 60
Math Function ......................................................................................... 62
Statistics .......................................................................................... 64
Limits ............................................................................................... 66
The range of Limits function:...................................................................... 67
dBm ................................................................................................. 68
dB .................................................................................................... 69
Relative Value ................................................................................. 70
Display Mode .......................................................................................... 71
Trigger .................................................................................................... 77
Hold Measurement Function ................................................................... 78
Chapter 3
Application Examples ............................................................ 79
Example 1: Reading Statistic Functions ................................................. 80
Example 2: To Eliminate Leads Impedance............................................ 81
Example 3: dBm Measurement............................................................... 83
Example 4: dB Measurement.................................................................. 84
Example 5: Limits Test ........................................................................... 86
Example 6: To Use Hold Measurement Function ................................... 88
Chapter 4
Measurement Tutorial ............................................................ 90
True RMS AC Measurement................................................................... 90
Crest Factor Errors (non-sinusoidal inputs) ............................................ 91
Loading Errors (AC Voltage) ................................................................... 92
Chapter 5General Troubleshooting ...................................................... 93
Chapter 6
Appendix ................................................................................. 94
Appendix A: Accessories ........................................................................ 94
Appendix B: Warranty summary ............................................................. 95
Appendix C: Daily Maintenance and Cleaning ........................................ 96
Appendix D: Contact SIGLENT ............................................................... 97

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Chapter 1

Quick Start

General InspectionHandle Adjustment

The Front PanelThe Back Panel

To Connect Power Line

User Interface



To Use Safety Lock

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General Inspection
1. Inspect the shipping container.
Please keep the damaged container or cushioning material until the contentsof the shipment have been checked completely and the instrument has passed
the electrical and mechanical test.
Damages of the instrument caused by the shipment will be compensated by
the shipper or carrier. SIGLENT will not be responsible for the free repair or
replacement.

2. Inspect the instrument.
If there exit any mechanical damages or lacking of components, or the
instrument fails the electrical and mechanical test, please contact your
SIGLENT sales.

3. Check the accessories.
Check the accessories according to the packing list carefully. If there exit any
accessories damaged or missing, please contact your SIGLENT sales.

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To adjust the Handle
Adjust the handle position of SDM3045X properly to place the instrument
stably so that users can manipulate and observe the display better. Please grip
the handle by the two sides and pull it outward. Then rotate the handle to theappropriate position. Please operate as the following diagram.

Diagram 1- 1

Diagram 1- 2

Horizontal Position

Handle adjustment

Diagram 1- 3

Carrying Position

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Front Panel
SDM3045X Digital Multimeter provides users with brief and clear front panel.
These control buttons are group by logic and users only need choose
corresponding buttons to carry out basic operations, as shown in Diagram
1-4.

B

E

A
H

C

G

B
B

F

D

B

Diagram 1- 4

Front Panel Overview

A LCD Display

B USB HostHC

D Menu Operation Keys

Power KeyB

E Measurement and Assistant Function KeysF

Range and Direction Keys

B

B

4

G Signal input terminals

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Back Panel
SDM3045X Digital Multimeter‟s Back Panel provides users with abundantinterfaces as shown in the following diagram.

A

I
B

H

D

H

B

B

G F

B
C

E

B

B

Diagram 1- 5

Back Panel Overview

APower Socket

B Power FuseHC

AC Voltage Selector

D Inspection card (option)

USB Device

F LAN

B

E

B

G

VMC Output

B

H Ext trigger
B

I

Current Input FuseB

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Power On
Please power on the instrument as the following steps:
1. Adjust AC Voltage Selector to 110 (100~120V, 45~440Hz, AC) or 220(200~240V, 50/60Hz, AC) in accordance with power standards in yourcountry;
2. Connect the instrument to AC supply via power cord supplied by
SIGLENT;
3. The power indicator light on the front panel will glitter slowly;
4. Press the power key on the front panel, the instrument will be started a few
seconds later.

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User Interface
Single Display：
Trigger Mode

LAN State Icon

Control Mode

Main Display
Function
Reading
Display

Softkey Menu

Unit

Measurement Range
Diagram 1- 6

Single Display Interface

Dual-Display：
Dual Display Icon

Main
Display
Function
Function
Main
Display

Vice-display
Diagram 1-7

User Interface

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Chapter 2

Function and Operation

To Measure DC Voltage / Current

To Measure AC Voltage / Current

To Measure 2-Wire / 4-Wire Resistance

To Measure Frequency / Capacitance

To Test Continuity / Diode

To Measure Temperature / Optional Multiple Scan Card

To use Dual-display Function or Set Up the Utility

Acquire Function or Help System

Math Function or Display Function

Run / Stop

Single Trigger / Hold Measurement Function



To Switch Functions or Return to Local Menu

To Select Measurement Range

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To Select Measurement Range
The Multimeter has two kinds of modes of selecting measurement range:“Auto” and “Manual”. It can select appropriate range according to the signals
input in Auto mode, which is very convenient for users. While in Manual mode,
you can obtain higher reading precision. Range selection keys are on the rightside of the front panel as the following diagram.

To increase range

To switch modes

To decrease range
Diagram 2- 1

Range Selection Keys

Method 1: By Function keys on the Front Panel
Auto Range: Press
Manual Range: Press

to switch between Auto Range and Manual Range.
to increase range and press

to decrease

range.

Method 2: By softkeys on the measurement main interface as Diagram 2-2.
Auto Range: Press【Auto】to choose Auto Range, meanwhile Manual Range isforbidden.
Manual Range: Press【600mV】、【6V】、【60V】、【600V】or【1000V】
to choose required range manually. Auto Range is forbidden at this moment.

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Diagram 2- 2

Range selection menus

Explanations:
1. When the input signal is beyond the current scope of the measurement
range, the Multimeter will show “overload”.
2. Range option will turn back to default setting “Auto” after restarting andremote reset.
3. Users are suggested to select “Auto” range so as to protect the instrument
against damage and get exact data as much as possible when it‟s hard to
predict the range of measurement.
4. For Dual-display Function, the measurement range of vice display is auto.
5. The range is fixed during testing the Continuity. The range ofcontinuity is selected as 2kΩ.












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To Select Measurement Speed
The instrument provides three types of measurement rate: 5 reading/s, 50
reading/s and 150 reading/s. 5 reading/s belongs to “Slow” rate; 50 reading/s
belongs to “Middle” rate; 150 reading/s belongs to “Fast” rate.
Measurement speed can be controlled by softkey menu. Press 【Speed】 andthen press 【Slow】,【Middle】or【Fast】to choose measurement speed.

Diagram 2- 3

Range selection menu

Explanations:
1. Three reading rates are available for DCV, ACV, DCI, ACI and 2-Wire/
4-Wire Resistance: “Slow”, “Middle” and “Fast”.
2. There is a linkage for both reading resolution and reading (measurement)rate.
3. 5 reading/s and 50 reading/s belongs to 4.5 digit resolution.
4. 150 reading/s belong to 3.5 digit resolution.
5. The reading resolution of Temperature is fixed at 4.5 digit and “Fast”
respectively.
6. The reading resolutions and measurement rates of both Diode andContinuity are fixed at 4.5 digit and “Fast” respectively.
7. The reading resolution and measurement rate of the Frequency function
are fixed 4.5 digit and “Slow” respectively.
8. The reading resolution and measurement rate of the Capacitance function
are fixed at 3.5 digit and “Slow” respectively.

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Basic Measurement Functions
SDM3045X Digital Multimeters have following basic functions:

To Measure DC Voltage



To Measure AC Voltage



To Measure DC Current

To Measure AC Current

To Measure 2/4-Wire Resistance

To Measure Capacitance

To Test Continuity



To Test Diode

To Measure Frequency or Period

To Measure Temperature

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SDM3045X Digital Multimeter

SIGLENTTo Measure DC Voltage
The Multimeter enables to measure DC Voltage up to 1000V. The method toconnect and measure DC Voltage will be introduced in details as the following
steps.
Operating Steps:
1. Presson the front panel to enter the DC Voltage measurement

interface, as shown in Diagram 2- 4.

Diagram 2- 4

DC Voltage Measurement Interface

2. Connect the red lead to terminal Input-HI and black lead to terminal
Input-LO as the following diagram.

Diagram 2- 5

Sketch Map for Measuring DC Voltage

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3. Choose a proper voltage range according to the measured circuit.
Table 2- 1

Measurement Characteristics of DC Voltage

600mV、6V、60V、600V、1000V
Ranges*1000V on all ranges（HI terminal）
Input Protection
Range, Speed, DC input impedance, Rel
Configurable
Parameters
NOTE*:
 All the ranges enable to obtain 10% value higher than original except
1000V. Besides, both Manual and Auto are available for setting every
range.
 When inputting range is higher than 1000V at 1000V Level, “overload” will
be shown on the screen.
 1000V input protection exists in every range.

4. Set the DC input impedance (Only for Manual 600mV range).
Press 【Input Z】to set the DC resistance as “10M” (default value) or“>10G”. Users can execute DC voltage measurement directly without
modifying this parameter which has been setup before leaving factory.
5. Set relative value (Optional operation).
Press 【Rel】 to open or close Relative math function. When it is opened,
the reading displayed is a value which comes from the result of actual
measurement value subtracts the relative value that has been set. The
default relative value is the measurement value when the function is
opened.(Please refer to “ Math Functions” in Chapter 2 to know about thedetails.)
6. Read measurement result.
Select required measurement rate (reading rate) by pressing 【Speed】
and read the measurement result.
7. View history data.
There are four types of way to view historical data: “Number”, “Bar
Meter” ”Trend Chart” and “Histogram”.

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SIGLENTTo Measure DC Current
The Multimeter enables to measure DC Current up to 10A. The method toconnect and measure DC Current will be introduced in details as the following
steps.
Operating Steps:

1. Pressandon the front panel to enter the DC Current

measurement interface, as shown in Diagram 2- 6.

Diagram 2- 6

DC Voltage Measurement Interface

2. Connect the red lead to terminal Input-I and black lead to terminal
Input-LO as the following diagram.

Diagram 2- 7

Sketch Map for Measuring DC Current

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3. Choose a proper current range according to the measured circuit.
Table 2- 2

Measurement Characteristics of DC Current

600μ A、6mA、60mA、600mA、6A、10A
Ranges*10A(back panel), 12A(inside the instrument)
Input Protection
Range, Speed, Rel
Configurable
Parameters
NOTE*:All the ranges enable to obtain 10% value higher than original except 10A.
Besides, both Manual and Auto are available for setting every range.

4. Set relative value (Optional operation).
Press 【Rel】 to open or close Relative math function. When it is opened,
the reading displayed is a value which comes from the result of actual
measurement value subtracts the relative value that has been set. The
default relative value is the measurement value when the function is
opened. (Please refer to “ Math Functions” in Chapter 2 to know about thedetails.)
5. Read measurement result.
Select required measurement rate (reading rate) by pressing【Speed】andread the measurement result.
6. View history data.
There are four types of way to view historical data: “Number”, “Bar
Meter” ”Trend Chart” and “Histogram”.

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SIGLENTTo Measure AC Voltage
The Multimeter enables to measure AC Voltage up to 750V. The method toconnect and measure DC Voltage will be introduced in details as the following
steps.
Operating Steps:

1. Presson the front panel to enter the AC Voltage measurement

interface, as shown in Diagram 2- 8.

Diagram 2- 8

AC Voltage Measurement Interface

2. Connect the red lead to terminal Input-HI and black lead to terminal
Input-LO as the following diagram.

Diagram 2- 9

Sketch Map for Measuring AC Voltage

3. Choose a proper voltage range according to the measured circuit.

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Table 2- 3

Measurement Characteristics of AC Voltage

600mV、6V、60V、600V、750V
Ranges*
750Vrms on all ranges（HI terminal）
Input Protection
Range, Speed, Rel
Configurable
Parameters
NOTE*:
 All the ranges enable to obtain 10% value higher than original except
750V. Besides, both Manual and Auto are available for setting every
range.
 When inputting range is higher than 750V at 750V Level, “overload” will beshown on the screen.
 750V input protection exists in every range.
4. Set relative value (Optional operation).
Press 【Rel】 to open or close Relative math function. When it is opened,
the reading displayed is a value which comes from the result of actual
measurement value subtracts the relative value that has been set. The
default relative value is the measurement value when the function is
opened. (Please refer to “ Math Functions” in Chapter 2 to know about thedetails.)
5. Read measurement result.
Select required measurement rate (reading rate) by pressing 【Speed】andread the measurement result. If you press
andand then pressto get the frequency value measured from input AC signal.

Diagram 2- 10

Dual-display

6. View history data.
There are four types of way to view historical data: “Number”, “Bar
Meter” ”Trend Chart” and “Histogram”.
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SIGLENTTo Measure AC Current
The Multimeter enables to measure AC Current up to 10A. The method toconnect and measure AC Current will be introduced in details as the following
steps.
Operating Steps:

1. Pressandon the front panel to enter the AC Current

measurement interface, as shown in Diagram 2- 11.

Diagram 2- 11

AC Voltage Measurement Interface

2. Connect the red lead to terminal Input-I and black lead to terminal
Input-LO as the following diagram.

Diagram 2- 12

Sketch Map for Measuring AC Current

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3. Choose a proper current range according to the measured circuit.
Table 2- 4

Measurement Characteristics of AC Current

Ranges*

60mA、600mA、6A、10A

Input Protection

10A(back panel), 250V(fuse), 12A(inside theinstrument)

Configurable
Range, Speed, Rel
Parameters
NOTE*:All the ranges enable to obtain 10% value higher than original except 10A.
Besides, both Manual and Auto are available for setting every range.

4. Set relative value (Optional operation).
Press 【Rel】 to open or close Relative math function. When it is opened,
the reading displayed is a value which comes from the result of actual
measurement value subtracts the relative value that has been set. The
default relative value is the measurement value when the function is
opened. (Please refer to “ Math Functions” in Chapter 2 to know about thedetails.)
5. Read measurement result.
Select required measurement rate (reading rate) by pressing 【Speed】
and read the measurement result.
6. View history data.
There are four types of way to view historical data: “Number”, “Bar
Meter” ”Trend Chart” and “Histogram”.

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SIGLENTTo Measure 2-Wire/4-Wire Resistance
The Multimeter enables to measure 2-Wire Resistance and 4-Wire Resistance.
The method to connect and measure 2-Wire/4-Wire Resistance will be
introduced in details separately.

2-Wire ResistanceOperating Steps:

1. Presson the front panel to enter the 2-Wire Resistancemeasurement interface, as shown in Diagram 2- 13.

Diagram 2- 13

2-Wire Resistance Measurement Interface

2. Connect the red lead to terminal Input-HI and black lead to terminal
Input-LO as the following diagram.

Diagram 2- 14

Sketch Map for Measuring 2-Wire Resistance

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3. Choose a proper resistance range according to the scope.
Table 2- 5

Measurement Characteristics of 2-Wire ResistanceRanges*Open-circuit Voltage

600Ω、6kΩ、60kΩ、600kΩ、6MΩ、10MΩ、100MΩ
<8V

Input Protection

1000V on every range (HI terminal)

Range, Speed, Rel
Configurable
Parameters
NOTE*:All the ranges enable to obtain 10% value higher than original. Besides, both
Manual and Auto are available for setting every range.

4. Set relative value (Optional operation).
Press 【Rel】 to open or close Relative math function. When it is opened,
the reading displayed is a value which comes from the result of actual
measurement value subtracts the relative value that has been set. The
default relative value is the measurement value when the function is
opened. (Please refer to “ Math Functions” in Chapter 2 to know about thedetails.)
5. Read measurement result.
Select required measurement rate (reading rate) by pressing 【Speed】
and read the measurement result.
6. View history data.
There are four types of way to view historical data: “Number”, “Bar
Meter” ”Trend Chart” and “Histogram”.

NOTE:
You are suggested to make use of Relative function when measuring small
resistance to reduce or escape impedance error from Test leads.

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4-Wire ResistanceOperating Steps:

1. Pressandon the front panel to enter the 4-Wire

Resistance measurement interface, as shown in Diagram 2- 14.

Diagram 2- 15

4-Wire Resistance Measurement Interface

2. Connect the red lead to terminal Input-HI and black lead to terminal
Input-LO as the following diagram.

Diagram 2- 16

Sketch Map for Measuring 4-Wire Resistance

SDM3045X Digital Multimeter

23

SIGLENT

3. Choose a proper resistance range according to the scope.
Table 2- 6

Measurement Characteristics of 4-Wire ResistanceRanges*Open-circuit Voltage

200Ω、2kΩ、20kΩ、200kΩ、2MΩ、10MΩ、100MΩ
<8V

Input Protection(1) 1000V on each range (HI terminal)(2) 200V on each range (HI Sense, LO Sense)

Configurable Parameters Range, Speed, Rel
NOTE*:All the ranges enable to obtain 20% value higher than original. Besides, both
Manual and Auto are available for setting every range.
4. Set relative value (Optional operation).
Press 【Rel】 to open or close Relative math function. When it is opened, thereading displayed is a value which comes from the result of actual
measurement value subtracts the relative value that has been set. The default
relative value is the measurement value when the function is opened.
(Please refer to “ Math Functions” in Chapter 2 to know about the details.)
5. Read measurement result.
Select required measurement rate (reading rate) by pressing 【Speed】
and read the measurement result.
6. View history data.
There are four types of way to view historical data: “Number”, “Bar
Meter” ”Trend Chart” and “Histogram”.

NOTE：
Please do not put the terminals of the resistance on the conductive plane orin your hand to avoid error. The bigger of the resistance, the more affection it
will be brought.

24

SDM3045X Digital Multimeter

SIGLENTTo Measure Capacitance
The Multimeter enables to measure Capacitance up to 1000μF. The method toconnect and measure Capacitance will be introduced in details as the following
steps.
Operating Steps:

1. Presson the front panel to enter the Capacitance measurement

interface, as shown in Diagram 2- 16.

Diagram 2- 17

Capacitance Measurement Interface

2. Connect the red lead to terminal Input-HI and black lead to terminal
Input-LO as the following diagram.

Diagram 2- 18

Sketch Map for Measuring Capacitance

SDM3045X Digital Multimeter

25

SIGLENT

3. Choose a proper capacitance range according to the measured circuit.
Table 2- 7

Measurement Characteristics of CapacitanceRanges*2nF、20nF、200nF、2μF、200μF、200μF、10000μF

Input Protection

1000V on all ranges (HI terminal)

Configurable Parameters Range, Rel
NOTE*:All the ranges enable to obtain 20% value higher than original. Besides, both
Manual and Auto are available for setting every range.

4. Set relative value (Optional operation).
Press 【Rel】 to open or close Relative math function. When it is opened,
the reading displayed is a value which comes from the result of actual
measurement value subtracts the relative value that has been set. The
default relative value is the measurement value when the function is
opened. (Please refer to “ Math Functions” in Chapter 2 to know about thedetails.)
5. Read measurement result.
Capacitance measurement is fixed at “Slow” rate. Therefore, you can‟tadjust the reading rate when reading the result.
6. View history data.
There are four types of way to view historical data: “Number”, “Bar
Meter” ”Trend Chart” and “Histogram”.

NOTE：
Before measuring the electrolytic capacitance, you should make the two legsof the electrolytic capacitance short circuit and let it be discharged.

26

SDM3045X Digital Multimeter

SIGLENTTo Measure Frequency or Period
The Frequency or Period of a signal could be obtained by Dual-display
Function during measuring its voltage or current or by the function button on
the front panel. The method to connect and measure Frequency or Period will
be introduced in details as the following steps.

To Measure Frequency
Operating Steps:

1. Pressandon the front panel to enter the Frequency

measurement interface. The lower right corner of the screen shows theunit of Frequency, as shown in Diagram 2- 17.

Diagram 2- 19

Frequency Measurement Interface

2. Connect the red lead to terminal Input-HI and black lead to terminal
Input-LO as the following diagram.

Diagram 2- 20

Sketch Map for Measuring Frequency

SDM3045X Digital Multimeter

27

SIGLENT

3. Choose a proper voltage range according to the measured circuit.
Table 2- 8

Measurement Characteristics of Frequency

RangesMeasurement Range
Input Protection
Configurable
Parameters

600mV,6V,60V, 600V, 750V
20Hz ~ 500kHz
750Vrms on all ranges (HI terminal)
Range, Rel

4. Set relative value (Optional operation).
Press 【Rel】 to open or close Relative math function. When it is opened,
the reading displayed is a value which comes from the result of actual
measurement value subtracts the relative value that has been set. The
default relative value is the measurement value when the function is
opened. (Please refer to “ Math Functions” in Chapter 2 to know about thedetails.)
5. Read measurement result.
Frequency measurement is fixed at “Slow” rate. Therefore, you can‟t adjust
the reading rate while reading the result.
6. View history data.
There are four types of way to view historical data: “Number”, “Bar
Meter” ”Trend Chart” and “Histogram”.

28

SDM3045X Digital Multimeter

SIGLENTTo Measure Period
Operating Steps:

1. Pressandon the front panel and select 【Period】to enter

the Period measurement interface. The lower right corner of the screen
shows the unit of Period, as shown in Diagram 2- 21.

Diagram 2- 21

Period Measurement Interface

2. Connect the red lead to terminal Input-HI and black lead to terminal
Input-LO as the following diagram.

Diagram 2- 22

Sketch Map for Measuring Period

3. Choose a proper voltage range according to the measured circuit.
Table 2- 9

Measurement Characteristics of Period

RangesMeasurement Range
Input Protection
Configurable
Parameters

200mV, 2V, 20V, 200V, 750V
2μs – 50ms
750Vrms on all ranges (HI terminal)
Range, Rel

SDM3045X Digital Multimeter

29

SIGLENT

4. Set relative value (Optional operation).
Press 【Rel】 to open or close Relative math function. When it is opened,
the reading displayed is a value which comes from the result of actual
measurement value subtracts the relative value that has been set. The
default relative value is the measurement value when the function is
opened. (Please refer to “ Math Functions” in Chapter 2 to know about thedetails.)
5. Read measurement result.
Period measurement is fixed at “Slow” rate. Therefore, you can‟t adjust thereading rate while reading the result.
6. View history data.
There are four types of way to view historical data: “Number”, “Bar
Meter” ”Trend Chart” and “Histogram”.

30

SDM3045X Digital Multimeter

SIGLENT

To Test Continuity
Continuity test uses double leads method to measure the resistance of themeasured circuit via about 0.5mA current. When the measured resistance incircuit is lower than the selected one, it is considered being connected with
instrument. The method to test Continuity will be introduced in details as thefollowing steps.
Operating Steps:

1. Presson the front panel to enter the Continuity test interface, as

shown in Diagram 2- 23.

Diagram 2- 23

Continuity Measurement Interface

2. Connect the red lead to terminal Input-HI and black lead to terminal
Input-LO as the following diagram.

Diagram 2- 24

Sketch Map for Testing Continuity

3. Set the Short-circuit resistance.

SDM3045X Digital Multimeter

31

SIGLENT

The default value is set as 50Ω before leaving factory. The value can bechanged by using direction keys. You also can execute the Continuity
measurement directly without modification.
Table 2- 10

Measurement Characteristics of Continuity

Test Current
Ranges*Open-circuit Voltage

1mA
Fixed at 2kΩ
<8V

Input Protection

1000V on all ranges (HI terminal)

Beep Condition

0≤Rtesting≤Short-circuit impedance0Ω≤Short-circuit impedance≤2kΩ

4. Set the Beeper function.
Press 【Beeper】to turn on or off the Beeper. If the circuit is continuous, theinstrument will beep continually when the Beeper is turned on.
5. Search for the test point and read measurement result.

NOTE:
Before testing continuity, please cut off the power and discharge all thehigh-voltage containers to avoid damages to the Multimeter.

32

SDM3045X Digital Multimeter

SIGLENT

To Test DiodeIf input voltage is under Threshold the Beeper will beep persistently. The
method to test Diode will be introduced in details as the following steps.
Operating Steps:

1. Pressandon the front panel to enter the Diode test

interface, as shown in Diagram 2- 25.

Diagram 2- 25

Diode Test Interface

2. Connect red lead to both terminal Input-HI and anode of the Diode andblack lead to both terminal Input-LO and cathode of the Diode as thefollowing diagram.

Diagram 2- 26

Sketch Map for testing Diode

3. Set the Threshold.
The default value is set as 2V before leaving factory. The value can bechanged by using direction keys. You also can execute the Diodemeasurement directly without modification.
SDM3045X Digital Multimeter

33

SIGLENT

Table 2- 11

Characteristics of Checking Diodes

Test Current
Ranges*Open-circuit Voltage

1mA
0~4V
<8V

Input Protection

1000V (HI terminal)

Beep Condition

V measured≤Threshold

4. Set the Beeper function.
Press 【Beeper】to turn on or off the Beeper. If the circuit is continuous, theinstrument will beep persistently when the Beeper is turned on.

5. Read measurement result.
6. Reverse the probes and measure the voltage in the diode once more.
Evaluate the diode according to the following rules: If the Multimeter shows “overload” when in reverse bias model, it indicatesthat the diode is normal.
 If the Multimeter shows voltage about 0V and the instrument beeps
persistently when in forward and reverse bias model, it indicates that thediode is short.
 If the Multimeter shows “overload” when in forward and reverse model, it
indicates that the diode is open.
Note:
Before testing diode, please cut off the power and discharge all thehigh-voltage containers to avoid damages to the Multimeter.

34

SDM3045X Digital Multimeter

SIGLENTTo Measure Temperature
The Multimeter supports for two types of temperature sensor: TC and RTD.
The method to connect and measure Temperature will be introduced in details
as the following steps.
Operating Steps:

1. Presson the front panel to enter the Temperature measurement

interface, as shown in Diagram 2- 27.

Diagram 2- 27 Temperature Measurement Interface

2. Connect the red lead to terminal Input-HI and black lead to terminal
Input-LO as the following diagram.

Diagram 2- 28

Sketch Map for Measuring Temperature

SDM3045X Digital Multimeter

35

SIGLENT

3. Press 【Load】and use direction keys to select the required file. Thenpress 【Read】to recall an existing configuration file.

Diagram 2- 29

Load a Configuration File

4. Press 【Define】to view the configuration, as shown in the following
diagram:

Diagram 2- 30

Configuration of the Sensor

5. Press 【Display】 to choose a display mode. The Multimeter supports
three display modes: Temperature Value, Measured Value and All.

Diagram 2- 31

36

Choose Display Mode of Temperature Measurement

SDM3045X Digital Multimeter

SIGLENT

Press 【All】, the measured value will be shown on the Vice display andthe corresponding value will be shown on the Main display at the sametime, which is convenient for users to observe temperature and voltage
values ( or resistance value).

Diagram 2- 32

Show Temperature And Voltage Values

6. Press 【Units】to choose the unit of temperature. The Multimeter supports
three units: °C , °F, K.

Diagram 2- 33

Unit Selection Interface

7. Set relative value (Optional operation).
Press 【Rel】 to open or close Relative math function. When it is opened,
the reading displayed is a value which comes from the result of actual
measurement value subtracts the relative value that has been set. The
default relative value is the measurement value when the function is
opened. (Please refer to “ Math Functions” in Chapter 2 to know about thedetails.)
8. Read measurement result.
Temperature measurement is fixed at “Fast” rate. Therefore, you can‟tadjust the reading rate when reading the result.

SDM3045X Digital Multimeter

37

SIGLENT

9. View history data.
There are four types of way to view historical data: “Number”, “Bar
Meter” ”Trend Chart” and “Histogram”.

38

SDM3045X Digital Multimeter

SIGLENT

Measurement Parameters
The parameters have been configured before the Multimeter leaving factory.
Users can either measure directly or modify them to meet your own
requirements.

DC Input Impedance
DC input impedance is only applicable for DC voltage measurement. When DC
Voltage function is selected, press【Range】 and select 【600mV】to show themenu【Input Z】, as the following diagram shows.

Diagram 2- 34 Choose DC Input Impedance

The options of input impedance for DC voltage measurements are 10MΩ and
10GΩ. 10MΩ impedance is general for the Multimeter, but for 600mV manual
ranges, 10GΩ should be chosen for better result. The current selection will besaved in nonvolatile memory.

DC input impedance selection:
 While the DC input impedance is selected as 10MΩ, the input
impedance of all measurement range is 10MΩ; While the DC input impedance is selected to 10GΩ, the input
impedance for 600mV is 10GΩ; for 2V, 20V, 200V and 1000V
measurement range is kept at 10MΩ.
 The default value of DC input impedance is 10MΩ; settings of DC input
impedance are stored in the nonvolatile memory.

SDM3045X Digital Multimeter

39

SIGLENT

Short-circuit ResistanceSet up the short-circuit resistance value in the short-circuit test menu. Whenthe measured resistance is lower than the short-circuit resistance, the circuit isconsidered as connected, and the beeper sounds (if sound is turned on). The
short-circuit resistance is only applicable to the continuity test.
Operating Steps:
1. When Continuity function is selected, press【Threshold】to enter interface
as the following diagram.

Diagram 2- 35

Set Up the Short-circuit Resistance

2. Use direction keys to change the parameter values.
Press left and right directional keys to choose different digits. Each press
for the Left key, former number will be selected, vice versa. Press up anddown keys to change the current digit value. Each press for the up key,value will be increased 1, vice versa.
Short-circuit Resistance: The range of short-circuit resistance is 0Ω~2000Ω. The default value is50Ω.
 The value of short-circuit resistance is stored in the nonvolatile memory
and the resistance remains unchanged after the power is off.

40

SDM3045X Digital Multimeter

SIGLENT

Dual-display Function
Dual-display function is used to improve test and measurement functions.
Press

to open Dual-display function and the upper right corner willshow “Dual”. By this time, press a function key if this function can be used as
the vice display, it will be displayed in the Vice Display. The Main Display will
display the function that is selected before the Dual-display function is turned
on. All the available combinations are listed in table 2-12.
Table 2- 12 Available Main/Vice Function Combinations (shade is available)

Main Display Function
DCV DCI ACV ACI FREQ PERIOD 2WR 4WR Cap
DCV
DCI
ACV
ACI
Vice
FREQ
Display
Function PERIOD
2WR
4WR
Cap
Explanations:
1. If the same measurement function is used in both Main and Vice Display.
 The readings in both of the display will update at the same time.
 If math function (dBm, dB) is used in Main Display, when opening Vice
Display, math operation will be closed automatically and Vice Display willshow the same measurement result as Main Display.
 If math function (Statistics, Limits, Relative) is used in Main Display, when
opening Vice Display, the result will still be shown in Main Display andVice Display will show the same measurement result as Main Display.

2. If different measurement functions are used in both Main and Vice Display.
 The readings in both of the display will update alternately.
 If math function (dBm, dB) is used in Main Display, when opening Vice
Display, math operation will be closed automatically and Vice Display will
SDM3045X Digital Multimeter

41

SIGLENTshow the second selected function normally.
If math function (Statistics, Limits, Relative) is used in Main Display, when
opening Vice Display, the result will still be shown in Main Display andVice Display will show the second selected function normally.

3. If Temperature function is used in Main Display, set the display mode(→【Display】→【All】). Then the result (corresponding value) will

be shown in Main Display and the current measurement value is shown inVice Display.
4. Auto Range is adopted by Vice Display. If the same measurement function
is used in both the display, so does the range.
5. Measured data in Vice Display cannot be saved into “History”.

42

SDM3045X Digital Multimeter

SIGLENT

Utility Function
The Utility function enables users to set up system parameters, interface
parameters of the multimeters.

Press

and

to enter the operating menu of Utility function, as

the following diagram shows.

Diagram 2- 36

Table 2- 13

Utility Function Configuration Interface

Utility Function Menu Description

Function Menu
Store/Recall
Manage File
I/O Config
Test/Admin
System Setup

Description
Store or recall setting files.
Create a new file, copy, rename or delete a file.
Set up LAN and GPIB parameters.
Provide board test and firmware update function.
Set up system information configuration.

SDM3045X Digital Multimeter

43

SIGLENTStore and Recall
The Store/Recall function enables users to store and recall the instrument
parameters and data files in the local storage as well as in USB storage.
Operating Steps:
1. After entering into the function menu of Utility, press 【Store/Recall】toenter the interface as shown in diagram 2-38.

Diagram 2- 37

Store and Recall Interface

2. Press【Store Settings】to enter the following interface.

Diagram 2- 38

44

SDM3045X Digital Multimeter

Store Settings Interface

SIGLENT

Table 2- 14

Storage Function Menu Description

Function Settings
Menu
Browse
File
Name
Type
.xml / .csv
Store
MS Data
Done

Description
Choose the location that file will be saved.
Input a file name.
Choose the type that the file is saved.
Save the file as input file name to the current
selected location.
Save all changes and return to the higher levelmenu.

3. Press【Recall Settings】to enter the following interface. Use direction keys
to choose storage path and location, and press【Select】to recall thecorresponding file.

Diagram 2- 39

Recall Function Interface

4. Press【Power on】to set the Power On state of the instrument.
 You can choose【Last】 or 【Factory Default】as the initial state when the
instrument is turned on.
 The configuration is effective when you restart the Multimeter.
 DC Voltage is always the selected function when the instrument is turned
on even if you have selected【Last】 or 【Factory Default】as the Power
On state.
5. Press【Set to Defaults】to select “Factory Default” as the Power On state.

SDM3045X Digital Multimeter

45

SIGLENTManage File
The Manage File function enables users to create a new folder and save, copy,
rename or delete files in the local storage as well as in USB storage.
Operating Steps:
1. After entering into the function menu of Utility, press【Manage File】toenter the interface as shown in diagram 2-41.

Diagram 2- 40

Manage File Interface

2. Choose the file location.
Press【Browse】and use direction keys to select the corresponding file.
3. Press【File Name】to enter the following interface.

Diagram 2- 41 Input File Name

46

SDM3045X Digital Multimeter

SIGLENT

The method of inputting file name:









Press direction keys to select a desired char in the input area.
Press “OK” key on the front panel to input selected char in the input area.
Press【Clear All】to clear all input chars.
Press【Delete Char】to delete the letter on which the cursor taking place.
Press【Previous Char】to move the cursor in the file name area to theprevious char.
Press【Next Char】to move the cursor in the file name area to the next char.
Press【Done】to save the current file and return to the higher level menu.
Press【Cancel】to cancel the current operation and return to the higher
level menu.

4. Press【Action】and select【Folder】, 【Capture Display】, 【Copy】,【Rename】or【Delete】to do the corresponding operation.
Table 2- 15

Action Settings

Function
Menu
FolderCaptureDisplay
Copy
RenameDeleteDone

Description
Press【Create Folder】to create a new folder.
Press【Save Screen】to save current captured screen picture
as standard BMP format.
Press【Perform Copy】to copy the selected file.
Press【Perform Rename】to rename the selected file.
Press【Perform Delete】to delete the selected file.
Save all changes and return to the higher level menu.

SDM3045X Digital Multimeter

47

SIGLENTI/O Configuration
Press【I/O Config】to enter the following interface and set up the parameters.

Diagram 2- 42

I/O Configuration Interface

LAN Settings
The Multimeter enables users to operate instrument remotely by LAN
interface and store or recall internet settings. You can look over current LAN
settings and set up IP address and subnet mask.
After entering into the function menu of Utility, press 【I/O Config】. Select【On】→【LAN Settings】→【Modify Settings】to enter the following interface.

Diagram 2- 43

Table 2- 16

LAN Settings Interface

LAN Settings

Function
Description
Menu
IP Address Set up IP address and the default setting is 10.11.11.104.
48

SDM3045X Digital Multimeter

SIGLENT

Subnet
Mask
Gateway
CancelDone

Set up subnet mask and the default setting is 255.0.0.0.
Set up gateway and the default setting is 192.168.0.1
Cancel current operation and return to the higher level menu.
Save all changes and return to the higher level menu.

GPIB Settings
Each device on the GPIB (IEEE–488) interface must have a unique address.
The default address is 18 when the instrument is leaving the factory. The
address of Multimeter can be any integral value between 1 and 30.
Operating Steps:
1. After entering into the function menu of I/O configuration, press【GPIB Settings】to enter the interface shown in diagram 2-45.

Diagram 2- 44

GPIB Settings

2. Users can change the value of GPIB address by direction keys.
3. Press【Select】to set the input value as GPIB address and return to thehigher level menu.

SDM3045X Digital Multimeter

49

SIGLENT

Board Test
SDM3045X provides self-test functions, including Key Test, LCD Test,
Beeper Test and Chip Test.
Operating Steps:

1. Pressand, then choose【Test/Admin】→【Board Test】

to enter the following interface.

Diagram 2- 45
Table 2- 17

Board Test Interface

Board Test Function Description

Function Menu
Key
LCD
BeeperChip
Done

Description
Test the instrument‟s keys.
Test the instrument‟s LCD screen.
Test the instrument‟s beeper.
Test the instrument‟s chips.
Return the higher level menu.

2. Test the keys.
Select【Key】to enter the key test interface, as the Diagram 2-47 shows. The
on-screen lathy rectangle shapes represent the keys on the front panel. Test
all keys and knobs and you should also verify that all the backlit buttons
illuminate correctly.

50

SDM3045X Digital Multimeter

SIGLENT

Diagram 2- 46 Key Test Interface

NOTE: Before you operate, the shapes on the screen display blue color.
 The corresponding area of tested buttons or knobs would display green
color.
 Press【Done】to exit the test.

3. Test the LCD screen.
Select【LCD】to enter the screen test interface, the screen shows themessage:” Press „Change‟ to change Press „Done‟ to exit“. Press【Change】
to start the test and observe if the screen has severe color or other display
error. As the Diagram 2-48 shows.

Diagram 2- 47

LCD Test Interface

NOTE:
 Press【Change】to change the color of the screen. There are threecolors: red, blue and green.
 Press【Done】to exit the test.

4. Test the beeper.
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51

SIGLENT

Press 【Beeper】to test the beeper. Under regular circumstance, press【Beeper】 one time and the instrument will beep one time.
5. Test the chips.
Press【Chip】→【Start】to enter chip test interface, as Diagram 2-49 shows.

Diagram 2- 48

Chip Test Interface

NOTE: If the test is passed, the corresponding result shows “pass”.
 If the test is failed, the corresponding result shows “fail”.

6. Press【Done】to exit the board test.

52

SDM3045X Digital Multimeter

SIGLENT

System Setup
Press

and

, then select【System Setup】to enter the followinginterface.

Diagram 2- 49
Table 2- 18

System Setup Interface

System Settings Menu Description

Function Menu
Language
Firmware Update
ScreenSystem Info
Done

Description
Select the display interface language.
Update software version,
Set up the screen protection function.
View system information.
Return to the higher level menu.

1. Select language.
The Multimeter supports two kinds of languages, English and Chinese. Press【Language】to enter the following interface.

Diagram 2- 50 Choose Language

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53

SIGLENT

2. Set up the time of screen protection.
Press【Screen】to set screen protection as 1 Min, 5 Mins, 15 Mins, 30 Mins,
1 Hour, 2 Hours or 5 Hours according to different demands. Activate thescreen saver program and screen saver will be on if no action is taken within
the time that you have selected. Press any button the resume.
3. View system information.
Press【System Info】to view system information, including startup times,
software version, hardware version, production ID and serial number, as
shown in the following diagram.

Diagram 2- 51

54

SDM3045X Digital Multimeter

System Information

SIGLENT

Firmware Update
The software of the Multimeter can be updated directly via USB flash drive,
updating current software version to desired software version.
Operating Steps:
1. Copy the update file to the USB flash drive.
2. Insert USB flash drive to USB host interface on the front panel of theMultimeter.

3. Press→→【System Setup】→【Firmware Update】, thenpress 【Browse】and select the update file. Next, press【Update】→【Yes】
to start updating the system software.
4. After accomplishing update, the screen shows message:” Firmware Update Done!” Then you can move the USB flash driveaway.
5. Restart the Multimeter and check the version information.
Press

→

→【System Setup】→【System Info】to checkif the software and hardware version after updating is in accordance withthe desired version. If not, the updating is failed and you need update
once more as the above steps.
6. After checking, press【Done】to exit the system information interface.

NOTE:
Don‟t cut off the power during the instrument is updating

SDM3045X Digital Multimeter

55

SIGLENT

AcquireSampling is a process of acquiring and digitizing signal. The optional Trigger
methods of the Multimeter include Auto Trigger, Single Trigger and External
Trigger.

Press

to enter the interface shown as the following diagram:

Diagram 2- 52 Acquire Interface
Table 2- 19

Function Menu of triggering parameter

Function Menu
Trg Src
Slope
Delay
Samples/Trigger
VMC Out

56

Description
Set the source of trigger.
Set the slope polarity of external trigger.
Set the delay.
Set the number of samples or trigger.
Set the polarity of output pulse signal when samplingsignal is finished.

SDM3045X Digital Multimeter

SIGLENT

Auto Trigger
Auto Trigger parameters that need to be set up include delay, samples/trigger and VMC out.
Operating Steps:

1. Press, then select 【Trg Src】→【Auto】or press

on the front

panel directly to enable Auto Trigger.
2. Set the delay.
Delay is the waiting time after the trigger signal is sent out and before theauquiring starts. Press 【Delay】to select Auto or Manual mode. Whenchoosing Manual mode，Left and Right keys are used to switch thenumber of a numerical value, Up and Down keys are used to change theselected value.
3. Set the number of samples or trigger.
Press 【Samples/Trigger】to set the sample count. Left and Right keys areused to switch the number of a numerical value, Up and Down keys areused to change the selected value.

Sample Count Sample Count indicates the count of point sampled while theMultimeter getting a signal of Single Trigger.
 The range of sampling point should be between 1 and 599999999.
 The default value of Sample Count is 1.

4. Set the VMC Out.
The Multimeter output a pulse signal through the VM COMP interface on
the rear panel after sampling signal is finished
Press 【VMC Out】to choose Positive or Negative polarity.

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Single Trigger
Single Trigger parameters that need to be set up include delay, samples/trigger and VMC out.
Operating Steps:

1. Press, then select 【Trg Src】→【Single】or press

on thefront panel directly to enable Single Trigger. See the diagram below.

Diagram 2- 53

Setting interface of Auto Trigger

2. Set the delay.
Press 【Delay】to select Auto or Manual mode.
3. Set the number of samples or trigger.
Press 【Samples/Trigger】to set sample count.
4. Set the VMC Out.
The Multimeter output a pulse signal through the VM COMP interface on
the rear panel after sampling signal is finished.
Press 【VMC Out】to choose Positive or Negative polarity.

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External Trigger
The external trigger signal will be input via EXT TRIG interface on the rear
panel. External trigger parameters that need to be set up include delay,
samples /trigger, slope and VMC out.
Operating Steps:

1. Press, then select 【Trg Src】→【Ext】to enable External Trigger.

Diagram 2- 54

Setting interface of Ext Trigger

2. Set the polarity of slope.
Press 【Slope】to choose Positive or Negative polarity.
3. Set the delay.
Press 【Delay】to choose Auto or Manual mode.
4. Set the number of samples or trigger.
Press 【Samples/Trigger】to set sample count.
5. Set the VMC Out.
In External Trigger mode, the Multimeter could output a pulse signal
through the VM COMP interface on the rear panel after sampling signal isfinished.

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Help System
SDM3045X provides powerful built-in help system. You can recall help
information at any time during using the instrument. You also can get aparticularly help for every button on the front panel or menu softkey by using
the built-in help system. Or you can get help about familiar operations withthe help list.

Press

and

to enter the help list, as the following diagramshows.

Diagram 2- 55
Table 2- 20

Help System Operating Menu

Function
Menu
Up
Down
SelectDone
1.

Help Menu

Description
Move up the cursor and select the help menu.
Move down the cursor and select the help menu.
Select the help information you want and read it.
Return to the higher menu.

Basic Measure.

Get basic measurement types and methods to connect the leads in different
measurements.
2.

Measuring Temperature.

Get the method to measure temperature.

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3.

Measuring Capacitance.

Get the method to measure temperature.
4.

Math Function.

Introduce how to use the math function while you are measuring.
5.

Dual-display Function.

Get the method to use the dual-display function while you are measuring.
6.

Saving and Recalling Information.

Introduce how to store and recall the data/parameter/ sensors files.
7.

Optional Multiple Scan Card.

Get help about operating optional multiple scan cards.
8.

The convention and Tips of Softkeys.

Get help about the convention and tips of softkeys.
9.

Technical Support.

Get the method to obtain technical support.

Explanation:
 In the help menu interface, you also can move cursor and select thecorresponding menu by up and down direction keys and press ”OK” toread the help information.
 While reading help information, you also can look up and down theinformation by up and down direction keys.

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Math Function
The Multimeter provides five math functions: Statistics, Limits, dBm, dB and
Relative. Choose different math functions to meet different measurement
demands.

Press

to show the operating menu of math functions on the screen, as

shown in the following diagram.

62

Diagram 2- 56

Math Function Menu of DC Voltage

Diagram 2- 57

Math Function Menu of AC Current

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Table 2- 21

Math Function Menu Description

Function
Menu

Settings

Statistics
LimitsdBmdB
Rel Value Value/Off

Description
Reading statistic functions, including: max, min,average, span, std dev and samples.
The Limits function performs Pass/Fail testingaccording to the specified upper and lower limits.
The dBm is based on a calculation of power delivered
to a reference resistance, 0dBm = 1mW.
The dB measurement is the difference between the
input signal and a stored relative value.
Turn on the relative value function and set up thevalue. Or turn off the function.

Explanations: Math function can only be applicable to the main display.
 If measurement function is changed, all math functions will beclosed except Statistics.

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Statistics
There are many kinds of reading statistic functions, including: Max, Min,
Average, Standard deviation and so on.

Press→【Statistics】→【Show】 to enter the interface shown in thefollowing diagram.

Diagram 2- 58
Table 2- 22

Function
Menu
Statistics

Statistic Measurement Menu Function Description

Settings

Description

Show/HideShow or hide the statistics function interface.
Show the minimum statistics value of current
measurement.
Show the average statistics value of current
measurement.
Show the maximum statistics value of current
measurement.
Show the span of current measurement.
Show the std dev statistics value of current
measurement.
Show the maximum statistics value of current
measurement.

Min
AverageMax
Span
Std dev
Samples
Clear
Readings
Done

64

Statistics

SDM3045X Digital Multimeter

Clear all current readings and restart statistics.
Return to the higher level menu.

SIGLENT

Statistics Function:
 In statistic function, the first reading is usually set to the maximum or
minimum value. When getting more readings, current displaying value
is always the maximum/minimum reading among all the measured
values.
 The maximum, minimum, average and reading quantities are stored involatile memory.

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LimitsLimits function is available to prompt signals beyond ranges according to theupper and lower parameters.

Press→【Limits】→【On】 to enter the interface shown in the following

diagram.

Diagram 2- 59

LimitsTable 2- 23 Limits Measurement Menu Function Description

Function
Menu
LimitsLow
CenterHigh
StatusLow
Failures
High
Failures
Span

Settings

Description

On/OffTurn on or turn off the Limits function.
Set the desired lower limit.
Set the desired center value
Set the desired upper limit.
Show the status of limit test.

BeeperOn/OffClear
Condition
Done

66

Show the times that reading is lower than the limit.
Show the times that reading is higher than the limit.
Set the desired span.
When the beeper is on, if the reading is lower orhigher than limits, the instrument will beep once.
Clear all current readings and restart to test.
Save all changes and return to the higher level menu.

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1. How to Set Limits
Select 【High】,【Low】,【Center】or【Span】 and then switch to the needed
digit by Left or Right Direction keys and input numerical value by Up and Down
Direction keys.
2. Unit
The unit of Limits is decided by the current measurement function.
3. Over hintWhen the reading is lower than the set lower limit, the color of main display
will switch black to red.
When the reading is higher than the set higher limit, the color of main
display will switch black to red.
When the reading is lower or higher than the set limits, the Beeper will
beep once. (The beeper is turned on.)The range of Limits function: The upper limit value should be always bigger than the lower limit
value.
 The upper and lower values are stored in volatile memory. They will be
set to default values when the power is on.

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SIGLENTdBm
The dBm function is logarithmic and based on a calculation of power delivered
to a reference resistance, relative to 1 mill watt. Besides，this function only
applies to AC voltage and DC voltage measurements.

Press→【dB/dBm】→【On】and select【Function dBm】to enter theinterface shown in the following diagram.

Diagram 2- 60

dBm Function Interface

Table 2- 24

dBm Measurement Function Menu Function Description

Function
Menu
dB/dBmFunction
dBm
Ref R
Done

Settings

Description

On/OffTurn on or turn off dB or dBm function.
Open dBm function and the lower right corner of themain display show “dBm”.
Set the parameter via direction keys: 50Ω ~ 8000Ω.
Save all changes and return to the higher level menu.

The computation method of the dBm:
When dBm function is turned on, the measured value of voltage is transformed
into dBm according to the following formula.
dBm = 10 x Log10 [(Reading2 / RREF) / 0.001W]

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Each dB measurement is different between the input signal and a stored
relative value, with both values converted to dBm. The dB function applies to
AC voltage and DC voltage measurements only.
Press→【dB/dBm On】and select【Function dB】to enter the interface
shown in the following diagram.

Diagram 2- 61

dB Function Interface

Table 2- 25

dB Measurement Function Menu Function Description

Function
Menu
dB/dBmFunctiondB
Ref R
dB RefValue
MeasureRef Value
Done

Settings

Description

On/OffTurn on or turn off dB or dBm function.
Open dB function and the lower right corner of themain display show “dB”.
Set the parameter via direction keys: 50Ω ~ 8000Ω.
Set the referred value of dB.
Set the current dBm measurement value as referredvalue.
Save all changes and return to the higher level menu.

The computation method of the dB:
2dB = 10 x Log10 [(Reading / RREF) / 0.001W] – (dB Ref value)
RREF expressed measuring the resistance value in the actual electric circuit.
Range of the dB Ref value: -200 dBm ~ +200 dBm. The default is 0 dBm.
dB Ref value: Input a value in dB setting interface by direction button, and then store it asdB Ref value.
 Settings of dB Ref value are stored in volatile memory.

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Relative Value
Relative value is used for relative measurement. Actual measurement readingis the depression between measurement value and preset value.
The Multimeter allows operating for the following parameters: DC Voltage, AC
Voltage,

DC

Current,

AC

Current,

Resistance,

Frequency,

Period,Capacitance and Temperature.

→【Rel Value】to enter the interface shown in the following

Pressdiagram.

Diagram 2- 62
Table 2- 26

Relative Operation

Rel Value Operation Function Menu

Function
Menu
Value
Off

Description
Select current measurement value as preset value.
Turn off the relative operation function.

When Rel Value function is turned on, the result of relative measurement willshow on the screen.
Main display = Measurement value – Preset value70

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Display Mode
The Multimeter supports four types of way to view measured data: “Number”,“Bar Meter” ”Trend Chart” and “Histogram”.

NumberPress

andto open the menu of display mode and press【Display】to enter the following interface. “Number” is always the selectedmode when the Multimeter is turned on.

Diagram 2- 63

Number Display Mode

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Bar Meter
Operating Steps:
1. Press【Bar Meter】to enter Bar Meter display mode.

Diagram 2- 64

Bar Meter Display Mode

2. Press【Horizontal Scale】to choose the way to set the vertical scale as
Default , Manual mode or Limits (limit function is on).
Table 2- 27

To Set the Vertical Scale of Bar Meter manuallyFunction Menu
Low
High
Center
Span
Done

72

Description
Set the low value of horizontal scale.
Set the high value of horizontal scale.
Set the center value of horizontal scale.
Set the span of horizontal scale.
Save all changes and return to the higher level menu.

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Trend Chart
Operating Steps:
1. Press【Trend Chart】to enter Trend Chart display mode.
.

Diagram 2- 65 Trend Chart Display Mode
Table 2- 28

Trend Chart Display Mode

Function Menu
Display
Trend
RecentAll
Horizontal Scale
Autoscale Once
Clear Readings

Description
Currently selected display mode is Trend Chart.
Show recent or all readings.
Choose the mode of Horizontal Scale.
Automatically set the horizontal scale once.
Clear all current readings and restart statistics.

2. Press【Horizontal Scale】to choose the way to set the horizontal scale as
Default , Auto , Manual or Limits ( Limit function is on) mode.
Press【Auto】and the Multimeter will set the vertical scale automatically.

Diagram 2- 66

Auto Vertical Scale

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Press【Manual】and you can set the vertical scale manually, as the following
diagram shows.

Diagram 2- 67

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SDM3045X Digital Multimeter

Manual Vertical ScaleSIGLENT

Histogram
Operating Steps:
1. Press【Histogram】to enter Histogram display mode.

Diagram 2- 68
Table 2- 29

Histogram Display Mode

Function
Menu
Display
Histogram
Binning
Bin SetCumulative
Clear
Readings

Settings

Histogram Display Mode

Description
Currently selected display mode is Histogram.

On/OffSet Binning as Auto or Manual mode.
Set the parameters of Bin.
Turn on or off Cumulative function.
Clear all current readings and restart statistics.

2. Press【Binning】to choose the way to set Binning as Auto or Manual mode.
When in Manual mode, press【Bin Settings】to enter the following interface.

Diagram 2- 69

Bin Set Interface

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Table 2- 30

Function
Menu

Bin SetSettings

Num.Bins
Low
High
CenterSpan
Outer Bins On/Off
Done

76

Description
Set the number of Bins, 10, 20, 40, 100, 200 or 400
selected.
Set the low value of horizontal scale.
Set the high value of horizontal scale.
Set the center value of horizontal scale.
Set the span of horizontal scale.
Show the bins beyond the scope or not.
Save all changes and return to the higher level menu.

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Trigger
The Multimeter supports Trigger function. Pressoron the front

panel to trigger the Multimeter by Auto or Single mode .Auto trigger isconsidered as a default when the power is on.

Auto Trigger
Presson the front panel one time and Auto Trigger will be started tocapture continuous readings automatically. By the time, the black field of thescreen will show “● Auto Trigger”. Pressagain and the trigger is

stopped.

Single Trigger
Presson the front panel, Single Trigger will be started one time andgenerate an effective reading. By the time, the black field of the screen willshow “● Single Trig”.

Explanation：
In Remote Mode, the black field just above the screen will show “● Immediate
Trig”. Press

to switch back to the local mode and the Multimeter will

choose Auto Trigger automatically.

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Hold Measurement Function
Hold Measurement function provides users with a stable reading on thescreen of the front panel. When the test leads are put away, the reading is
still held on the screen, which makes users can view measured history data.

Press

and

to open Hold measurement function interface, theblack field just above the screen will show “● Probe Hold”, as shown in thefollowing diagram.

Diagram 2- 70

Table 2- 31

Hold Measurement Function

Function
Menu
Probe Hold
BeeperClear List

78

Hold Measurement Function Interface

Settings

Description

On/OffOn/OffTurn on or off Probe Hold function.
Turn on or off the Beeper.
Clear all current readings and restart to statistics.

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Chapter 3

Application Examples

This chapter mainly introduces few application examples to help users
control and manipulate SDM3045X quickly.

Example 1: Reading Statistic Functions



Example 2: To Eliminate Leads Impedance

Example 3: dBm Measurement



Example 4: dB Measurement



Example 5: Limits Test

Example 6: To Use Hold Measurement Function

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Example 1: Reading Statistic Functions
Introduce how to realize the statistic function during measuring. Whencontinually measuring few readings, the Multimeter will update statistic values
constantly.
Operating Steps：
1. Presson the front panel to select AC Voltage measurement

function and choose a proper voltage range.
2. Connect the red lead to terminal Input-HI and black lead to terminal
Input-LO as Diagram 2-9.
3. Set the Statistics function parameters.
Press→【Statistics】to turn on the statistics function.

4. Lead test leads into the circuit and start to measure. Statistics will updatewith the increasement of samples, as the following diagram shows.

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SDM3045X Digital Multimeter

Diagram 3- 1

Statistics 1

Diagram 3- 2

Statistics 2

SIGLENT

Example 2: To Eliminate Leads ImpedanceRelative Operation could eliminate impedance errors from leads whenmeasuring smaller resistance.
Operating Steps:

1. Presson the front panel to select 2-Wire Resistancemeasurement function.
2. Connect the red lead to terminal Input-HI and black lead to terminal
Input-LO as Diagram 2-14.
3. Choose a proper resistance range according to the scope. The default is
Auto Range.
4. Lead impedance will be shown on the screen as follow after connectingwith two leads together.

Diagram 3- 3 Test Lead Impedance

5. Set parameters for Relative operation.
Press→【Rel Value】set relative value as current measured value.

Diagram 3- 4

Set Relative Value

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SIGLENT

6. Besides, pressing【Rel】on the softkey menu could also open Relative
operation.

The Relative Operation has been turned on.
Diagram 3- 582

SDM3045X Digital Multimeter

Lead Impedance after Operation

SIGLENT

Example 3: dBm MeasurementdBm is commonly used in audio signal measurement. The following will
introduce you how to measure dBm value.
Operating Steps：
1. Presson the front panel to select AC Voltage measurement

function and choose a proper voltage range.
2. Connect the red lead to terminal Input-HI and black lead to terminal
Input-LO as Diagram 2-9.
3. Set the dBm parameters.
Press→【dB/dBm】to turn on the dBm function and set the

selective value of dBm as a reference value within supposed circuit byusing direction keys: 50Ω .

Diagram 3- 6

Select Reference Resistance as Measurement Value

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Example 4: dB Measurement
As a common measuring unit, dB has been widely used in electricalengineering, radio science, mechanics, shock and vibration, mechanical power
and acoustics areas. The following will introduce you how to measure dB
between two circuits.
Operating Steps:
Method 1:
Measure dBm1 and dBm2 existing in two circuits separately according to
Example 3, and then dB could be got:.
dB = dBm1-dBm2

Method 2:
1. Presson the front panel to select AC Voltage measurement

function and choose a proper voltage range.
2. Connect the red lead to terminal Input-HI and black lead to terminal
Input-LO as Diagram 2-9.
3. Measure dBm1 according to Example 3.
4. Press→【dB/dBm】to turn on the dB function and Set parametersof dB Ref Value (dBm2). At this time, the reading shown on the screen is
the power difference between two circuits.

Diagram 3- 7

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SDM3045X Digital Multimeter

Set the Parameters of dB Ref ValueSIGLENT

Method 3:
1. Access the first circuit. Measure dBm2 according to Example 3.
2. Press→ 【 dB/dBm 】 to turn on the dB function and select【Measure Ref Value】 to set the current dBm measurement value as
referred value.
3. Access the first circuit. At this time, the reading shown on the screen is thepower difference between two circuits.

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Example 5: Limits Test
Limits Operation hints you the signal is overstep its range according to theselected High and Low Limit parameters; meanwhile the beeper makes asound to alarm (if sound is on.)Operating Steps:

1. Presson the front panel to select AC Voltage measurement

function and choose a proper voltage range.
2. Connect the red lead to terminal Input-HI and black lead to terminal
Input-LO as Diagram 2-9.

3. Press→【Limits】to set the Limits parameters.

Press【Low】to set the low limit value.

Diagram 3- 8

Set the Low Limit Value

Press【High】to set the high limit value.

Diagram 3- 9
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SDM3045X Digital Multimeter

Set the High Limit ValueSIGLENT

4. Turn on the beeper and start Limits Test. As shown in Diagram 3-11. The
measured result is between the Low and High limits, so the test status is“Pass”.
5. If changing the high limit value to 2V, the measured result is not between
the Low and High limits. So the instrument beep once, and the main
display is red. The test status is “Fail” and High Failures is shown. As thefollowing diagram shows.

Diagram 3- 10

Limits Test Result

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Example 6: To Use Hold Measurement Function
Reading Hold can help user to obtain a stable reading and hold it on thedisplay of Front Panel. The reading would be held all the same althoughtesting pen had been moved away. Then we will introduce how to keep thereadings displayed on screen.
Operating Steps:

1. Presson the front panel to select DC Voltage measurement

function and choose a proper voltage range.
2. Connect the red lead to terminal Input-HI and black lead to terminal
Input-LO as Diagram 2-4.

3. Pressandto open Hold measurement function interface.

By the time, the screen will record the result of measuring DC voltage, as
shown in the following diagram.

Diagram 3- 11

4. Press

Result 1

on the front panel to select AC Voltage measurement

function and choose a proper voltage range.
5. Connect the red lead to terminal Input-HI and black lead to terminal
Input-LO as Diagram 2-9. By the time, the screen will record the result of
measuring AC voltage, as shown in the following diagram.

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SDM3045X Digital Multimeter

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Diagram 3- 12 Result 2

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Chapter 4

Measurement Tutorial

True RMS AC Measurement
The AC measurement of the Multimeter has true RMS response. The power
dissipated in a resistor within a time is proportional to the square of themeasured true RMS voltage, independent of wave shape. The instrument canaccurately measure true RMS voltage or current, as long as the wave shapecontains negligible energy above the effective bandwidth.
The AC voltage and AC current functions measure the “AC coupled” true RMS
value, which is to measure the RMS value of the AC component (DCcomponent is rejected) of the input signal. For sine waves, triangle waves, andsquare waves, the AC and AC+DC values are equal since these waveforms do
not contain a DC offset. See the following table 4-1.
Table 4- 1

True RMS AC Measurement of Sine, Triangle and Square waves

Waveform

Crest Factor（C.F.）AC RMS

AC+DC
RMS

Non-symmetrical waveforms, such as pulse trains, contain DC voltages which
are rejected by AC coupled true RMS measurements.
An AC coupled true RMS measurement is desirable in situations where you
are measuring small AC signals in the presence of DC offsets. For instance,measuring AC ripple present on DC power supplies. There are situations,however, where you might want to know the AC+DC true RMS value. You candetermine this value by combining results from DC and AC measurements as
the following shows. You should perform the DC measurement using 5.5 digit
mode for best AC rejection.
RMS (AC+DC) = √ AC2 + DC2
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Crest Factor Errors (non-sinusoidal inputs)
A common misconception is that "since an ac Multimeter is true RMS, its sine
wave accuracy specifications apply to all waveforms." Actually, the shape of
the input signal can dramatically affect measurement accuracy. A common
way to describe signal wave shapes is “crest factor”. Crest factor is the ratio of
the peak value to RMS value of a waveform.
Generally speaking, the greater the crest factor, the greater the energy
contained in high frequency harmonics. All Multimeters have errors that are
crest factor dependent. (The crest factor errors do not apply for input signals
below 100Hz.)
You can estimate the measurement error due to signal crest factor as shown
below:
Total Error＝Error (Sine wave) + Error (Crest factor) + Error (Bandwidth)
Error (Sine wave): error for sine wave
Error (Crest factor): crest factor additional error
Error (Bandwidth): estimated bandwidth error as shown below:

Bandwidth error =×100%（% reading）

C.F.: signal crest factor
F: fundamental frequency of pulse
BW: effective bandwidth of the Multimeter
Example:Calculate the approximate measurement error for a pulse train input with acrest factor of 2 and a fundamental frequency of 20 kHz. For this example,
assume 1-year accuracy specifications of the Multimeter: ± (0.05%× reading +0.03%×range).
Total Error = (0.05%×reading+0.03%×range) + (0.05%×range) +(0.8%×reading)=0.85%×reading + 0.08%×range

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Loading Errors (AC Voltage)
In the AC Voltage function, the input of SDM3045X appears as a 1MΩ
resistance in parallel with 100pF of capacitance. The test lead that you use toconnect signals to the Multimeter will also add additional capacitance andloading. The approximate input resistances of the Multimeter at different
frequencies are listed in the following table.
Table 4- 2

Approximate Input Resistances at Different Frequencies

Input Frequency
100Hz
1kHz
10kHz
100kHzInput Resistance
1MΩ
850kΩ
160kΩ
16kΩ

For low frequencies:
Error（%）=×100%

For high frequencies:
Error（%）=[-1] ×100%

F: input frequency
R s: source resistance
Cm: input capacitance (100pF) plus test lead capacitance92

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Chapter 5General Troubleshooting

The following is a list of the troubles that you may meet while using theMultimeter and their solutions. Please handle as the corresponding steps
when meeting these troubles. If you still can‟t handle them, please contact
SIGLENT in time.
1. If the screen of the Multimeter is still dark with nothing displaying
after pressing the power key:(1) Check if the power has been connected correctly.
(2) Check if the main power switch on the back panel has been turned on
already.
(3) Check if the power fuse has blown. Replace it as desired if it has blown.
(4) Restart the Multimeter after all above steps have been done.
(5) If the instrument still can‟t start up properly, please contact SIGLENT.
2. The reading doesn’t change when connecting an AC current signal:(1) Check if the test lead has been connected to the current jack or LO jackcorrectly.
(2) Check if the fuse in the current location on the back panel has blown.
(3) Check if the measuring location has switched to the DCI or ACI placecorrectly.
(4) Check if the input is ACI but the measuring location is in DCI place.
3. The reading doesn’t change when connecting a DC current signal:(1) Check if the test lead has been connected to the current jack or LO jackcorrectly.
(2) Check if the fuse in the current location on the back panel has blown.
(3) Check if the measuring location has switched to the DCI or ACI placecorrectly.
(4) Check if the input is DCI but the measuring location is in ACI place.
4. USB Disks can’t be recognized by the instrument.
(1) Check if the USB disk can work properly.
(2) Make sure the used USB disk is of Flash type. The instrument doesn‟tsupport USB disks of hard disk type.
(3) Check if the capacity of the used USB disk is too large. The Multimeter isrecommended not to use USB disks which exceed 4GB.
(4) After restarting the instrument, insert the USB disk again to inspect.
(5) If you still can‟t use the USB disk properly, please contact SIGLENT.

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Chapter 6

Appendix

Appendix A: Accessories
Standard Accessories:

A Power Cord that fits the standard of destination country.



Two test leads (black and red)

An USB CableA backup fusesA Quick Start

A CD-ROMNOTE:
 We suggest that the length of USB data wire and LAN cable connected tothe instrument should be less than 3m to avoid affecting the productperformance.
 All the accessories are available by contacting your local SIGLENT
office.

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Appendix B: Warranty summary
SIGLENT warrants that the products that it manufactures and sells will befree from defects in materials and workmanship for a period of three years
from the date of shipment from an authorized SIGLENT distributor. If a
product proves defective within the respective period, SIGLENT will provide
repair or replacement as described in the complete warranty statement.
To arrange for service or obtain a copy of the complete warranty statement,
please contact your nearest SIGLENT sales and service office. Except asprovided in this summary or the applicable warranty statement, SIGLENT
makes no warranty of any kind, express or implied, including without
limitation the implied warranties of merchantability and fitness for a particularpurpose. In no event shall SIGLENT be liable for indirect, special orconsequential damages.

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Appendix C: Daily Maintenance and Cleaning
Maintenance
When storing or placing the instrument, please avoid the liquid crystal display
from direct sunlight for a long time.

NOTE:
To avoid damages to the instrument or probe, please don‟t place them in mist,
liquid or solvent.

Cleaning
Please often clean the instrument or probe according to the use of them.
 Wipe the external ash of the instrument and probe by a soft rag. Be
careful not to scratch the transparent plastic protective screen when cleaning
the liquid crystal screen.
 Use a soft rag that has been soaked by water to clean the instrument
after cutting off the power. Or use 75% isopropyl alcohol of water solvent to
get a more thorough cleaning.

NOTE: To prevent the surface of the instrument or probe from damages, pleasedon‟t use any corrosive or chemical cleaning reagents.
 Please make sure the instrument is already dry before restarting it to
avoid short circuits or personal injuries caused by water.

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Appendix D: Contact SIGLENTSIGLENT TECHNOLOGIES CO., LTD.

Address: 3F, NO.4 building, Antongda Industrial Zone, 3rd LiuxianRoad, 68th District, Baoan District, Shenzhen, P.R.
China
Tel: +86-755-36615186
Fax: +86-755-3591582
Post Code: 518101
E-mail: sales@siglent.com
Http://www.siglent.com

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