GF SERIES
GF-200/GF-300/GF-400/GF-600/GF-800/GF-1000
GF-1200/GF-2000/GF-3000/GF-4000/GF-6100
GF-6000/GF-8000

Precision Balance
INSTRUCTION MANUAL

1WMPD4000209D

© 2014 A&D Company Ltd. All rights reserved.
No part of this publication may be reproduced, transmitted, transcribed, or translated
into any language in any form by any means without the written permission of A&D
Company Ltd.

The contents of this manual and the specifications of the instrument covered by thismanual are subject to change for improvement without notice.

Windows, Word and Excel are registered trademarks of the Microsoft Corporation.

CONTENTS
Basic Operation
1. INTRODUCTION .............................................................................................................................3
1-1 About This Manual.............................................................................................................................. 3
1-2 Features ............................................................................................................................................. 3
1-3 Compliance......................................................................................................................................... 4

2. UNPACKING THE BALANCE ........................................................................................................6
2-1 Unpacking........................................................................................................................................... 6
2-2 Installing the Balance ......................................................................................................................... 7

3. PRECAUTIONS ..............................................................................................................................8
3-1 Before Use.......................................................................................................................................... 8
3-2 During Use.......................................................................................................................................... 9
3-3 After Use ........................................................................................................................................... 10
3-4 Power Supply ................................................................................................................................... 10

4. DISPLAY SYMBOLS AND KEY OPERATION..............................................................................11
5. WEIGHING UNITS ........................................................................................................................12
5-1 Units.................................................................................................................................................. 12
5-2 Storing Units ..................................................................................................................................... 15

Adapting to the Environment
6. WEIGHING ....................................................................................................................................17
6-1 Basic Operation (Gram Mode) ......................................................................................................... 17
6-2 Counting Mode (PC)......................................................................................................................... 18
6-3 Percent Mode (Pct)........................................................................................................................... 20

7. RESPONSE ADJUSTMENT / SELF CHECK FUNCTION ............................................................21
7-1 Manual Response Adjustment.......................................................................................................... 21
7-2 Self Check Function ......................................................................................................................... 22

8. CALIBRATION ..............................................................................................................................23
8-1 Calibration Modes............................................................................................................................. 23
8-2 Calibration Using an External Weight............................................................................................... 24
8-3 Calibration Test Using an External Weight ....................................................................................... 26

Functions9. FUNCTION SWITCH AND INITIALIZATION.................................................................................28
9-1 Permit or Inhibit ................................................................................................................................ 28
9-2 Initializing the Balance...................................................................................................................... 29

10. FUNCTION TABLE .....................................................................................................................30
10-1 Structure and Sequence of the Function Table .............................................................................. 30
10-2 Display and Keys............................................................................................................................ 30
10-3 Details of the Function Table .......................................................................................................... 31
10-4 Description of the Class “Environment, Display”............................................................................ 341

10-5 Description of the Item “Data output mode” ................................................................................... 36
10-6 Description of the Item “Data format” ............................................................................................. 37
10-7 Description of the Data Format Added to the Weighing Data ............................................................... 39
10-8 Data Format Examples ................................................................................................................... 40
10-9 Comparator Function ...................................................................................................................... 42

11. ID NUMBER AND GLP REPORT................................................................................................44
11-1 Setting the ID Number .................................................................................................................... 44
11-2 GLP Report ..................................................................................................................................... 44

12. DATA MEMORY ..........................................................................................................................47
12-1 Notes on Using Data Memory ........................................................................................................ 47
12-2 Memory for Weighing Data ............................................................................................................. 48
12-3 Memory for Unit Mass in the Counting Mode ................................................................................. 51

13. UNDERHOOK .............................................................................................................................52
14. PROGRAMMABLE-UNIT ...........................................................................................................53
15. DENSITY MEASUREMENT ........................................................................................................54

RS-232C Serial Interface
16. RS-232C SERIAL INTERFACE / EXTERNAL INPUT ................................................................57
17. CONNECTION TO PERIPHERAL EQUIPMENT ........................................................................59
17-1 Connection to the AD-8121B Printer .............................................................................................. 59
17-2 Connection to a Computer.............................................................................................................. 59
17-3 Using Windows Communication Tools (WinCT) ............................................................................. 60

18. COMMANDS ...............................................................................................................................62
18-1 Command List................................................................................................................................. 62
18-2 Acknowledge Code and Error Codes ............................................................................................. 63
18-3 Command Examples ...................................................................................................................... 64
18-4 Control Using CTS and RTS .......................................................................................................... 67
18-5 Settings Related to RS-232C ......................................................................................................... 67

Maintenance
19. MAINTENANCE ..........................................................................................................................68
20. TROUBLESHOOTING ................................................................................................................68
20-1 Checking the Balance Performance and Environment................................................................... 68
20-2 Error Codes .................................................................................................................................... 69
20-3 Asking For Repair ........................................................................................................................... 71

21. SPECIFICATIONS.......................................................................................................................72
22. OPTIONS ....................................................................................................................................74
23. EXTERNAL DIMENSIONS .........................................................................................................77
24. TERMS/INDEX............................................................................................................................782

1. INTRODUCTION
This manual describes how the GF series balance works and how to get the most out of it in terms of
performance.
Read this manual thoroughly before using the balance and keep it at hand for future reference.

1-1 About This ManualThis manual consists of the following five parts:
Basic operation ...............................Describes precautions on handling the balance, balance
construction and basic balance operation.
Adapting to the environment ...........Describes response adjustment, calibration and calibration
test.
Functions ........................................Describes various functions of the balance.
RS-232C serial interface.................Describes the interface which transmits data and controls thebalance.
Maintenance ...................................Describes maintenance,
specifications and options.

error

codes,

troubleshooting,

1-2 Features
 Stabilization time of one second. When FAST is selected for the response rate, a stabilization
time of one second, to read a displayed value after a sample is placed on the pan, has beenachieved.
 Self Check Function, provided to self-check the balance.
 Data Memory Function, storing weighing data or unit mass in the counting mode. (Aboutweighing data, 40 sets of data can be stored.) Interval Memory Mode is provided to weigh asample and store the weighing data periodically.
 Good Laboratory Practice (GLP) data output using the standard RS-232C serial interface.
 Windows Communication Tools (WinCT), allows easy communication with Windows-based
personal computer. Windows is a registered trademark of the Microsoft Corporation.
 Comparator Indicators, displaying the comparison results.
 Capacity Indicator, displaying the weight value in percentage relative to the weighing capacity.
 Hold Function, provided for weighing a moving object such as an animal.
 Underhook, for measuring density and weighing magnetic materials.
 Density Mode, for calculating the density of a solid.
 Multiple Weighing Units, with most of the common units used around the world.
 Reference Card, provided for a quick reference to the balance operation.
 Breeze Break, provided for the GF-200/300/400/600/800/1000, for more accurate weighing.

3

1-3 Compliance
Compliance with FCC Rules
Please note that this device generates, uses and can radiate radio frequency energy. This
device has been tested and has been found to comply with the limits of a Class A computing
device pursuant to Subpart J of Part 15 of FCC rules. These rules are designed to provide
reasonable protection against interference when this device is operated in a commercial
environment. If this unit is operated in a residential area, it may cause some interference andunder these circumstances the user would be required to take, at his own expense, whatevermeasures are necessary to eliminate the interference.
(FCC = Federal Communications Commission in the U.S.A.)

Compliance With Directives of CE markThis device features radio interference suppression, safety regulation and restriction ofHazardous Substances in compliance with the following Council Directives
Council directive 2004/108/EC EN61326 EMC directive
Council directive 2006/95/EC
EN60950 Safety of Information Technology Equipment
Council directive 2011/65/EU
EN50581 Restriction of the use of certain Hazardous Substances
The CE mark is an official mandatory European marking.
Please note that any electronic product must comply with local laws and regulations when soldor used anywhere outside Europe.

45

2. UNPACKING THE BALANCE
2-1 Unpacking
 The balance is a precision instrument. Unpack the balance carefully. Keep the packing
material to be used for transporting the balance in the future.
 The packing contents depend on the balance model. See the illustrations to confirm thateverything is contained.

GF-200/300/400/600/800/1000

Note
Please confirm that the AC adapter type is correct
for your local voltage and receptacle type.
6

GF-1200/2000/3000/4000/6100/6000/8000

Note
Please confirm that the AC adapter type is correct
for your local voltage and receptacle type.

2-2 Installing the Balance
Install the balance as follows:
1. Refer to “3. PRECAUTIONS” for installing the balance. Place the balance on a solid weighingtable.
2. GF-200/300/400/600/800/1000
Assemble the breeze break on the balance as shown in the illustration on page 6.
GF-1200/2000/3000/4000/6100/6000/8000
Assemble the breeze ring and weighing pan on the balance as shown in the illustration above.
3. Adjust the leveling feet to level the balance. Confirm it using the bubble spirit level.
4. Confirm that the adapter type is correct for the local voltage and power receptacle type.
5. Connect the AC adapter to the balance. Warm up the balance for at least 30 minutes withnothing on the weighing pan.

7

3. PRECAUTIONS
To get the optimum performance from the balance and acquire accurate weighing data, note thefollowing:

3-1 Before Use
 Install the balance in an environment where thetemperature and humidity are not excessive. The best
operating temperature is about 20°C / 68°F at about
50% relative humidity.
 Install the balance where it is not exposed to direct
sunlight and it is not affected by heaters or air
conditioners.
 Install the balance where it is free of dust.
 Install the balance away from equipment which
produces magnetic fields.
 Install the balance in a stable place avoiding vibrationand shock. Corners of rooms on the first floor are best,
as they are less prone to vibration.
 The weighing table should be solid and free fromvibration, drafts and as level as possible.
 Level the balance by adjusting the leveling feet andconfirm it using the bubble spirit level.
 Ensure a stable power source when using the AC
adapter.
 Warm up the balance for at least 30 minutes. Plug in
the AC adapter as usual.
 Calibrate the balance before use or after having
moved it to another location.

Caution
Do not install the balance where flammable or corrosive gas is present.

83-2 During Use
 Discharge static electricity from the material to beweighed (hereinafter referred to as sample). When asample could have a static charge, the weighing data is
influenced. Ground the balance and try the following:
Eliminate the static electricity by AD-1683 as an accessory.
Or try to keep the ambient humidity above 45%RH.
Or use a metal shield case.
Or wipe a charged plastic sample with the wet cloth.
 This balance uses a strong magnet as part of thebalance assembly, so please use caution whenweighing magnetic materials such as iron. If there is aproblem, use the underhook on the bottom of thebalance to suspend the material away from theinfluence of the magnet.
 Eliminate the temperature difference between a sample and the environment. When a sample
is warmer (cooler) than the ambient temperature, the sample will be lighter (heavier) than thetrue weight. This error is due to a rising (falling) draft around the sample.
 Make each weighing gently and quickly to avoid errors due to changes in the environmental
conditions.
 Do not drop things upon the weighing pan, or place a sample on the pan that is beyond thebalance weighing capacity. Place a sample in the center of the weighing pan.
 Do not use a sharp instrument such as a pencil to press the keys. Use your finger only.
 Press the RE-ZERO key before each weighing to prevent possible errors.
 Calibrate the balance periodically so as to prevent possible errors.
 Take into consideration the affect of air buoyancy on a sample when more accuracy isrequired.
 Keep the balance interior free of dust and foreign materials.
The breeze break (GF-200/300/400/600/800/1000 only) and the clear main unit cover areprovided as accessories. The breeze break components may be charged with static electricity
when they are unpacked or when the humidity is low. If the weighing value is unstable or thebalance has a problem with repeatability, remove the breeze break. Or wipe the clear plateswith a moistened cloth, use an accessory DC static eliminator, AD-1683, or apply an anti-static
spray.

9

3-3 After Use Avoid mechanical shock to the balance.
 Do not disassemble the balance. Contact the local A&D dealer if the balance needs service orrepair.
 Do not use organic solvents to clean the balance. Clean the balance with a lint free cloth thatis moistened with warm water and a mild detergent.
 Avoid dust and water so that the balance weighs correctly. Protect the internal parts from liquid
spills and excessive dust.

3-4 Power Supply When the AC adapter is connected, the balance is in the standby mode if the standby indicatoris on (refer to “4. DISPLAY SYMBOLS AND KEY OPERATION”). This is a normal state anddoes not harm the balance. For accurate weighing, warm up the balance for at least 30 minutes
before use.

10

4. DISPLAY SYMBOLS AND KEY OPERATIONKey operation
Key operation affects how the balance functions. The basic key operations are:
 “Press and release the key immediately” or “Press the key”
= normal key operation during measurement
 “Press and hold the key”

Display symbols
Response indicators(Displayed for about 30 seconds
when weighing starts.)

・Displays data stored in memory
・Displays the weighing data relative to theweighing capacity, in percentage, in theweighing mode (Capacity indicator)

Animal mode indicator
Comparator
indicators

Processing indicator
Stabilization indicatorStandby indicator

Units

Weighing dataor stored data

Interval memory
standby indicator

Data number of thedata currently displayed
Processing indicator
Blinking indicators

Interval memory
active indicator

Each key, when pressed or when pressed and held, functions as follows:
Key

When pressed

When pressed and held

Turns the display ON or OFF. The standby indicator is displayed when the display isturned off. The weighing mode is enabled when the display is turned on.
This key is available anytime. Pressing the key during operation will interrupt theoperation and turn the display OFF.
In the weighing mode, turns the minimum Enters the function table mode. Refer toweighing value ON or OFF.
“10. FUNCTION TABLE”.
In the counting or percent mode, enters
the sample storing mode.
Switches the weighing units stored in the Enters the response adjustment/self check
function table. Refer to “5. WEIGHING mode.
UNITS”.
No function.

Enters the calibration mode.

Stores the weighing data in memory or
outputs to a printer or personal computer
using the RS-232C interface (Factory
setting), depending on the function tablesettings.

No function at the factory setting

Sets the display to zero.

11

By changing the function table:
Outputs “Title block” and “End block” for
GLP report.
Displays the data memory menu.

5. WEIGHING UNITS
5-1 Units
With the GF series balance, the following weighing units and weighing modes are available:
g

PC

Pct

OZ

Lb

L OZ

OZt

mm

ct

dwt

GN

TL

t

MS

DS

Counting mode
Percent mode
Density mode (To use this mode, it must be stored in the function table as described on
page 15. For details about this mode, refer to "15. DENSITY MEASUREMENT".
To select this mode, press the MODE key until the processing indictor
blinks with the unit "g" displayed. "DS" appears only when the density
value is displayed.)
Programmable-unit (No unit displayed. For details, refer to "14. PROGRAMMABLE-UNIT".)A unit or mode can be selected and stored in the function table as described on page 15
If a weighing mode (or unit of weight) has been turned off, that mode or unit will be missing in thesequence. Tael has four varieties, one of which can be selected and installed at the factory.
To select a unit or mode for weighing, press the MODE key.
For details about the units and modes, see the table below:
Name (unit, mode)
Abbrev.
Display
Function table
Conversion factor(Storing mode)
1g=
Gram
g
1g
Counting mode
PC
Percent mode
Pct
Ounce (Avoir)
OZ
28.349523125 g
Pound
Lb
453.59237 g
Pound/Ounce
L OZ
l0
1Lb=16 oz,
1 oz=28.349523125 g
Troy Ounce
OZt
31.1034768 g
Metric Carat
ct
0.2 g
Momme
mm
3.75 gPennyweightdwt
1.55517384 g
Grain (UK)GN
0.06479891 g
Tael (HK general, Singapore)
37.7994 g
Tael (HK jewelry)
37.429 g
TL
Tael (Taiwan)
37.5 gTael (China)
31.25 gTola (India)t
11.6638038 g
MessghalMS
4.6875 g
Density mode
DS
(See note below)
is used toshow the density.
Programmable-unit (Multi-unit)
Mlt
Note: The blinking processing indicator with “g” indicates that the density mode is selected.
12

The tables below indicate the weighing capacity and the minimum display for each unit, dependingon the balance model.

Capacity

Unit
GF-200

GF-300

GF-400

GF-600

Gram

210

310

410

610

810

1100

0.001

Ounce (Avoir)

7.40

10.93

14.46

21.51

28.57

38.80

0.00005

Pound

0.462

0.683

0.903

1.344

1.785

2.425

0.000005

0Lb 7.41oz

0Lb 10.93oz

0Lb 14.46oz

1Lb 5.52oz

1Lb 12.57oz

2Lb 6.80oz

0.01ozTroy Ounce

6.75

9.96

13.18

19.61

26.04

35.36

0.00005

Metric Carat

1050

1550

2050

3050

4050

5500

0.005

Momme

56.0

82.6

109.3

162.6

216.0

293.3

0.0005

Pennyweight

135

199

263

392

520

707

0.001

Grain (UK)

3240

4784

6327

9413

12500

16975

0.02

Tael (HK general,
Singapore)

5.55

8.20

10.84

16.13

21.42

29.10

0.00005

Tael (HK jewelry)

5.61

8.28

10.95

16.29

21.64

29.38

0.00005

Tael (Taiwan)

5.60

8.26

10.93

16.26

21.60

29.33

0.00005

Tael (China)

6.72

9.92

13.12

19.52

25.92

35.20

0.00005

Tola (India)

18.0

26.5

35.1

52.2

69.4

94.3

0.0001

Messghal

44.8

66.1

87.4

130.1

172.8

234.6

0.0005Pound/Ounce

GF-800Capacity

GF-1000

Minimum
display

GF-1200

GF-2000

GF-3000

GF-4000

GF-6100

Minimum
display

Gram

1210

2100

3100

4100

6100

0.01

Ounce (Avoir)

42.6

74.0

109.3

144.6

215.1

0.0005

Pound

2.66

4.62

6.83

9.03

13.44

0.00005

2Lb 10.68oz

4Lb 10.08oz

6Lb 13.35oz

9Lb 0.62oz

13Lb 7.17oz

0.01ozTroy Ounce

38.9

67.5

99.6

131.8

196.1

0.0005Metric Carat

6050

10500

15500

20500

30500

0.05

Momme

322

560

826

1093

1626

0.005

Pennyweight

778

1350

1993

2636

3922

0.01

Grain (UK)

18673

32408

47840

63272

94137

0.2

Tael (HKgeneral,Singapore)

32.0

55.5

82.0

108.4

161.3

0.0005

Tael (HKjewelry)

32.3

56.1

82.8

109.5

162.9

0.0005

Tael (Taiwan)

32.2

56.0

82.6

109.3

162.6

0.0005

Tael (China)

38.7

67.2

99.2

131.2

195.2

0.0005

Tola (India)

103

180

265

351

522

0.001

Messghal

258

448

661

874

1301

0.005

Unit

Pound/Ounce

13

Capacity

Minimum
display

Unit
GF-6000
Gram

6100

GF-8000
8100

0.1

Ounce (Avoir)

215

285

0.005

Pound

13.4

17.8

0.0005

13Lb 7.17oz

17Lb 13.72oz

0.01ozTroy Ounce

196

260

0.005

Metric Carat

30500

40500

0.5

Momme

1626

2160

0.05

Pennyweight

3922

5208

0.1

Grain (UK)

94136

125002

2

Tael (HKgeneral,Singapore)

161

214

0.005

Tael (HKjewelry)

162

216

0.005

Pound/Ounce

Tael (Taiwan)

162

216

0.005

Tael (China)

195

259

0.005

Tola (India)

522

694

0.01

Messghal

1301

1728

0.05

14

5-2 Storing Units
The units or modes can be selected and stored in the function table. The sequence of displaying theunits or modes can be arranged to fit the frequency of use.
The units stored are maintained in non-volatile memory, even if the AC adapter is removed.
Select a unit or mode and arrange the sequence of display
as follows:
1 Press and hold the SAMPLE key until ba5fnc of thefunction table is displayed, then release the key.

Press and hold
2 Press the SAMPLE key several times to display
Unit .

Press
several times

3 Press the PRINT key to enter the unit selection mode.

4 Specify a unit or mode in the order to be displayedusing the following keys.
SAMPLE key

To sequentially display the units.

RE-ZERO key

To specify a unit or mode. The
stabilization indicatorappears when the displayed unit
or mode is specified.

SelectDisplays the units
sequentially.

Specify

5 Press the PRINT key to store the units or modes. Thebalance displays end and then displays the next
menu of the function table.
6 Press the CAL key to exit the function table. Then thebalance returns to the weighing mode with the selectedunit.
7 To select other unit or mode for weighing, press the
MODE key.

15

Store

Unit setting example
The example below sets the units in the order with g (gram) as the first unit followed by pc(counting mode).
1

Press and hold the SAMPLE key until ba5fnc of
the function table is displayed, then release the key.

Press and holdPressseveral times

2

Press the SAMPLE key several times to display
1Unit .

3

Press the PRINT key to enter the unit selection mode.

4

Press the RE-ZERO key to specify the unit of g
The stabilization indicatorappears when theunit is specified.

Specify

5

Press the SAMPLE key to display 1Unit pC .

Select6

Press the RE-ZERO key to specify the unit of pc
The stabilization indicatorappears when theunit is specified.

Specify

7

Press the PRINT key to store the units.
The balance displays end and then displays thenext menu item of the function table.

Store

8

Press the CAL key to exit the function table. Then thebalance returns to the weighing mode with g, the unit
selected first.

9

Press the MODE key to switch between g and pc(gpc).

16

6. WEIGHING
6-1 Basic Operation (Gram Mode)
1 Place a container on the weighing pan, if necessary.
Press the RE-ZERO key to cancel the weight (tare). Thebalance displays 0.00 g. (The decimal point position
depends on the balance model.)Weighingpan

2 Place a sample on the pan or in the container.

Sample3 Wait for the stabilization indicator
Read the value.

Container

to be displayed.

4 Remove the sample and container from the pan.
Notes

Remove thesampleTo use other units, press the MODE key and select anappropriate unit.
Press the SAMPLE key to turn ON or OFF the minimum
weighing value.
The weighing data can be stored in memory. For details,
refer to “12. DATA MEMORY”.

When the ON:OFF key is pressed with a container placedon the weighing pan and weighing is started, the balance
automatically cancels the weight (tare) and displays 0.00 g.

(Display off)
Weighing
panContainer17

6-2 Counting Mode (PC)This is the mode to determine the number of objects in a sample based on the standard sample unitmass. Unit mass means the mass of one sample. The smaller the variables in each sample unit
mass is, the more accurate the counting will be. The GF series balance is equipped with theAutomatic Counting Accuracy Improvement (ACAI) function to improve the counting accuracy.
Notes
For counting, use samples that have a unit mass at least ten times greater than that of theminimum display in grams.
If the sample unit mass variable is too large, it may cause a counting error.
To improve the counting performance, use the ACAI function frequently or divide the samples
into several groups and count each group.

Selecting the counting mode
1 Press the MODE key to select pC (counting mode).

Storing a sample unit mass
2 Press the SAMPLE key to enter the sample unit massstoring mode.
Even in the storing mode, pressing the MODE key willswitch to the next mode.
3 To select the number of samples, press the SAMPLE key
several times. It may be set to 10, 25, 50 or 100.
Note
A greater number of samples will yield more accurate
counting result.

Weighingpan
4 Place a container on the weighing pan, if necessary.
Press the RE-ZERO key to cancel the weight (tare). The
number specified in step 3 appears.
e.g.:
25 0 pC is displayed if 25 is selected in step 3.

Container

5 Place the number of samples specified on the pan. In thisexample, 25 pieces.

Sample(25 pieces)

to be displayed.
6 Wait for the stabilization indicator
Press the PRINT key to calculate and store the unit mass.
The balance displays 25 pC (counting mode) and is set
to count samples with this unit mass. (The sample unit
mass is stored in non-volatile memory, and is maintainedeven if the AC adapter is removed.)
To improve the accuracy of the unit mass, proceed tostep 8.

18

NotesIf the balance judges that the mass of the samples is toolight and is not adequate to be used as the unit mass, it
displays lo .
If the balance judges that the mass of the samples is toolight to aquire accurate weighing, it displays an error
requiring the addition of more samples to the specified
appears,
number. In the example above, 150- pC
requiring 25 more samples. Add 25 samples and press
the PRINT key. When the unit mass is stored correctly,
the balance proceeds to the counting mode.

Place sample
to be counted

Counting operation
7 Place the samples to be counted on the pan.

Note
Up to 20 unit masses can be stored in memory for themultiple sample. For details, refer to “12. DATA MEMORY”.
The unit mass data in memory can be recalled or changed
using commands from the computer.

The counting result

Counting mode using the ACAI function
The ACAI is a function that improves the accuracy of the unit
mass automatically by increasing the number of samples as
the counting process proceeds.
8 If a few more samples are added, the processing indicator turns on. To prevent an error, add
three or more. The processing indicator does not turn on if overloaded. Try to add the same
number of samples as displayed.
9 The balance re-calculates the unit mass while the processing indicator is blinking. Do nottouch the balance or samples on the pan until the processing indicator turns off.
10 Counting accuracy is improved when the processing indicator turns off.
Each time the above operation is performed, a more accurate unit mass will be obtained.
There is no definite upper limit of ACAI range for the number of samples exceeding 100. Try
to add the same number of samples as displayed.
11

Remove all the samples used in ACAI and proceed with the counting operation using theimproved unit mass.

196-3 Percent Mode (Pct)This is the mode to display the weight value in percentage compared to a 100% reference mass andis used for target weighing or checking the sample variable.

Selecting the percent mode
1 Press the MODE key to select pct (percent mode). If thepercent mode can not be selected, refer to “5.
WEIGHING UNITS”.

Storing the 100% reference mass
2 Press the SAMPLE key to enter the 100% reference
mass storing mode.
Even in the storing mode, pressing the MODE key willswitch to the next mode.
3 Place a container on the weighing pan, if necessary.
Press the RE-ZERO key to cancel the weight (tare). Thebalance displays 100 0 pct .

4 Place the sample to be set as the 100% reference masson the pan or in the container.

Weighing
panContainer

Sample(100%)

5 Press the PRINT key to store the reference mass. Thebalance displays 100.00 pct . (The decimal point position
depends on the reference value. The reference mass isstored in non-volatile memory, and is maintained even if
the AC adapter is removed.)
Note
If the balance judges that the mass of the sample is toolight to be used as a reference, it displays lo.
6 Remove the sample.

Reading the percentage
7 Place a sample to be compared to the reference mass on
the pan. The displayed percentage is based on the 100%
reference mass.

Place sample
to be weighed

Weighing resultcompared to 100%
reference mass20

7. RESPONSE ADJUSTMENT / SELF CHECK FUNCTION
7-1 Manual Response Adjustment
The function has three rates as follows:

Response indicators

Changing the response rate changes the display refresh rate.
Indicator
FAST
MID.
SLOW

Parameter
Cond 0Cond 1
Cond 2

Response characteristic
Fast response, Sensitive value
Slow response, Stable value

Display refresh rate
If the response rate is changed as follows:
MID. or SLOWFAST =10 times/second
FAST
MID. or SLOW = 5 times/second

Note
To set the refresh rate of 5 times/second when the response rate is FAST or 10 times/second
when the response rate is MID. or SLOW, change the “Display refresh rate (5pd)” parameterof “Environment, Display (ba5fnc)” in the function table. For details, refer to “10. FUNCTIONTABLE”.

To increase the response rate, or to obtain a more stable display, perform the following:

Operation
1 Press and hold the MODE key until RESPONSE isdisplayed, then release the key.

Press and holdthe key

Press the MODE key again quickly.

Release the key
and press again

2 Press the MODE key to select a rate of the response
adjustment. Either FAST, MID. or SLOW can beselected.
3 After a few seconds of inactivity the balance displays
eend. Then, it returns to the weighing mode anddisplays the updated response indicator. The response
indicator remains displayed for about 30 seconds.
Note
The response adjustment can be changed at “Condition(Cond)” of “Environment, Display (ba5fnc)” in thefunction table. For details, refer to “10. FUNCTIONTABLE”.

21

Each pressing
switches
the indicators
After a while

7-2 Self Check Function
This function self-checks the internal performance of the balance.

Operation
1 Press and hold the MODE key until RESPONSE isdisplayed, then release the key.

2 The balance automatically starts to check its internal
performance

Press and holdthe key
Release the key

3 After self-check, the balance displays the checking
result and returns to the weighing mode.
e.g. “ OKDisplays the result.

”

The example above indicates that the result of the self
check is good.
Note
If improper performance is found in the self check, thebalance displays CH no. Contact the local A&D dealer
for repair.

228. CALIBRATION
8-1 Calibration Modes
The GF series balance has the following two modes.
 Calibration using an external weight Calibration test using an external weight (Calibration test does not perform calibration.)

Terms
The following terms are defined as follows:
External weight= A weight that you have. Referred to as a calibration weight when used forcalibration.
Calibration weight = A weight used for calibration
Target weight= An external weight used for calibration test

Caution Calibration adjusts the balance for accurate weighing.
Besides periodic calibration and before each use, perform calibration when:• the balance is installed for the first time.
• the balance has been moved.
• the ambient environment has changed.
 Do not allow vibration or drafts to affect the balance during calibration.
 To output the data for GLP using the RS-232C interface, set “GLP output ( info )” of “Dataoutput ( dout )”. For details, refer to “10. FUNCTION TABLE”.
 Calibration test is available only when “GLP output ( info )” of “Data output ( dout )” is set to “1” or “2”,Caution on using an external weight The accuracy of an external weight can influence the accuracy of weighing. Select anappropriate weight as listed below:
Model
Usable calibration weight
Adjustable range
GF-200200 g, 100 g
GF-300300 g, 200 g, 100 g
GF-400400 g, 300 g, 200 g-0.015 g to +0.015 g
GF-600600 g, 500 g, 400 g, 300 g, 200 g
GF-800800 g, 700 g, 600 g, 500 g, 400 g, 300 g, 200 g
GF-1000 1000 g, 900 g, 800 g, 700 g, 600 g, 500 g, 400 g, 300 g, 200 g
GF-1200 1000 g, 500 g
GF-2000 2000 g, 1000 g-0.15 g to +0.15 g
GF-3000 3000 g, 2000 g, 1000 g
GF-4000 4000 g, 3000 g, 2000 g
GF-6100 6000 g, 5000 g, 4000 g, 3000 g, 2000 g
GF-6000 6000 g, 5000 g, 4000 g, 3000 g, 2000 g-1.5 g to +1.5 g
GF-8000 8000 g, 7000 g, 6000 g, 5000 g, 4000 g, 3000 g, 2000 g
The calibration weight in bold type: factory setting
The calibration weight value can be adjusted within the range above.

Display This indicator means “the balance is measuring calibration data”.

Do not allow vibration or drafts to affect the balance while thisindicator is displayed.
23

8-2 Calibration Using an External WeightThis function calibrates the balance using an external weight.

Operation
1 Connect the AC adapter and warm up the balance
for at least 30 minutes with nothing on the pan.
2 Press and hold the CAL key until
displayed, and then release the key.

3 The balance displays

Cal

CaloutPress andhold the key

isReleasethe key0.

 If you want to change the calibration weight (alist of usable weights is shown on page 23),
press the SAMPLE key and proceed to step 4.
 If you use the calibration weight value stored in
the balance, proceed to step 5.

Select aweight4 Specify the calibration weight value as follows:
SAMPLE key

To switch the display condition
to: “All of the segments
blinking” (calibration weightselection mode) or “The lasttwo digits blinking” (value
adjustment mode).

RE-ZERO key

To select the calibration
weight or adjust the value. In
the value adjustment mode,-15 digits appear after +15
digits.

PRINT key

To store the new weightvalue. Even if the AC
adapter is removed, the data
is maintained in non-volatilememory.

CAL key

To cancel the operation andreturn to Cal 0 .

Note
Digit, when used for the GF series balance,
indicates a unit of minimum weighing value.

24

To next pagee.g. Calibration
weight value
1000.12 g

From previous page
5 Confirm that there is nothing on the pan and press
the PRINT key. The balance measures the zero
point. Do not allow vibration or drafts to affect thebalance.
The balance displays the calibration weight value.

6 Place the displayed calibration weight on the pan
and press the PRINT key. The balance measuresthe calibration weight. Do not allow vibration ordrafts to affect the balance.

7 The balance displays
from the pan.

end . Remove the weight

8 If the “GLP output (info)” parameter, of thefunction table, is set to “1” or “2”, the balancedisplays glp and outputs “Calibration Report”
using the RS-232C interface or stores the data inmemory. For details on the calibration report format,
refer to “11-2 GLP Report”.
9 The balance will automatically return to theweighing mode.
10

Calibration
weightPlace the calibration weight on the pan and confirm
that the value displayed is within 2 digits of thespecified value. If it is not within the range, checkthe ambient conditions such as breeze andvibration, also check the weighing pan. Then,
repeat steps 1 to 10.

25

GLP output

8-3 Calibration Test Using an External WeightThis function tests the balance weighing accuracy using an external mass and outputs the result.
This is available only when the “GLP output (info)” parameter is set to “1” or “2”. (Calibration test
does not perform calibration.)

Operation
1 Connect the AC adapter and warm up the balance
for at least 30 minutes with nothing on the pan.
2 Press and hold the CAL key until
displayed, then release the key.

CCout

Press andhold the key

is

3 The balance displays CC 0 .
 If you want to change the target weight (a list of
usable weights is shown on page 23), press the
SAMPLE key and proceed to step 4.
 If you use the target weight value stored in thebalance, proceed to step 5.

Releasethe key

Select aweight4 Specify the target weight value as follows:
SAMPLE key
To
switchthedisplay
condition to: “All of thesegments blinking” (target
weight selection mode) or“The last two digits blinking”(value adjustment mode).
RE-ZERO key

PRINT key

CAL key

To select the target weight or
adjust the value. In the value
adjustment mode, -15 digits
appear after +15 digits.
To store the new weightvalue. Even if the AC
adapter is removed, the data
is maintained in non-volatilememory.
To cancel the operation andreturn to CC 0 .

Note
Digit, when used for the GF series balance,
indicates a unit of minimum weighing value.

26

e.g. Target
weight value
1000.12 g
To next page

From previous page
5 Confirm that there is nothing on the pan and press the
PRINT key. The balance measures the zero point anddisplays the measured value. Do not allow vibration ordrafts to affect the balance.
The balance displays the target weight value.

6 Place the displayed target weight on the pan and press
the PRINT key. The balance measures the target weightand displays the measured value. Do not allow vibration
or drafts to affect the balance.

7 The balance displays
pan.

Target weightend . Remove the weight from the

8 The balance displays glp and outputs “Calibration
Test Report” using the RS-232C interface or stores the GLP output
calibration test data in memory. For details on thecalibration test report format, refer to “11-2 GLP Report”.
9 The balance will automatically return to the weighing
mode.

27

9. FUNCTION SWITCH AND INITIALIZATION
9-1 Permit or Inhibit
The balance stores parameters that must not be changed unintentionally (e.g. Calibration data for
accurate weighing, Data for adapting to the operating environment, Control data for the RS-232C
interface). There are five switches for the purpose of protecting these parameters. Each switch canselect either “permit” or “inhibit”. “Inhibit” protects parameters against unintentional operations.

Switches

Operation
1 Press the ON:OFF key to turn off the display.
2 While pressing and holding the PRINT key and the SAMPLE key, press the ON:OFF key.
The balance displays p5 .
3 Press the PRINT key. Then the balance displays the function switches.
4 Set the switches using the following keys.
SAMPLE key

To select the switch to change the parameter.

RE-ZERO key

To change the parameter of the switch selected.
0:To inhibit changes.

1:To permit changes

PRINT key

To store the new parameter and return to the weighing mode.

CAL key

To cancel the operation ( Clr is displayed.) To return to theweighing mode, press the CAL key once again.

28

9-2 Initializing the BalanceThis function returns the following parameters to factory settings.
 Calibration data Function table The sample unit mass value (counting mode), 100% reference mass value (percent mode) The data that is stored in the balance using the data memory function
 External calibration weight and target weight value
 Function switch settings Liquid density and temperature in the density modeNote
Be sure to calibrate the balance after initialization.

Operation
1 Press the ON:OFF key to turn off the display.
2 While pressing and holding the PRINT key and the
SAMPLE key, press the ON:OFF key. The balancedisplays p5 .

3 Press the SAMPLE key to display

Clr .

4 Press the PRINT key.
To cancel this operation, press the CAL key.

5 Press the RE-ZERO key.

6 Press the PRINT key to initialize the balance.
The balance will automatically return to the weighing
mode.

29

With these keys
held down

Press the key

10. FUNCTION TABLE
The function table reads or rewrites the parameters that are stored in the balance. These parameters
are stored in non-volatile memory, and are maintained even if the AC adapter is removed..

10-1 Structure and Sequence of the Function Table
The function table menu consists of two layers. The first layer is the “Class” and the second layer is
the “Item”. Each item stores a parameter.

ExampleThis example sets “Stores weighing data” for “Data memory” and “Every 1 minute” for “Interval time”.

10-2 Display and Keys
Display/Key

Description
The symbol “” indicates that the parameter displayed is in effect.

When pressed and held in the weighing mode, enters the function table mode.
Selects the class or item in the function table mode.
Changes the parameter.
When a class is displayed, moves to an item in the class.
When an item is displayed, stores the new parameter and displays the next class.
When an item is displayed, cancels the new parameter and displays the nextclass.
When a class is displayed, exits the function table mode and returns to theweighing mode.

30

10-3 Details of the Function TableClass

Parameter

Item

Cond
Condition

5t-b
Stability band width

Hold

Hold function

ba5fncEnvironment

trc

Zero tracking

Display

5pd

Display refresh rate

pnt
Decimal point

p-on

Auto display-ON

poff

Auto display-OFF

g5i

Capacity indicatorCp fncCp
Comparator mode

Comparator

Cp in
Input method

0
1
2
0
1
2
0
1
0
1
2
3
0
1
0
1
0
1
0
1
0
1
0

Description
Fast response, sensitive value FAST With "Hold 1", sets theaveraging time.
MID.
Slow response, stable value

SLOW

Stable when within

1 digit

Stable when within

3 digits

OFF
ON
OFF
NormalStrongVery strong
5 times/second
10 times/second
Point (.)
Comma (,)
OFF
ON
OFF
ON (10 minutes)
OFF
ON

Cp lo

Keeps zero display bytracking zero drift.

Period to refresh thedisplay
Decimal point format
Turns on the weighing
mode display when AC
adapter is connected.
Turns off the display after
10 minutes of inactivity.
Capacity indicator.
Zero: 0%Maximum capacity: 100%1

No comparison
Comparison, excluding "near zero"
when stable value or overloaded

2

Comparison, including "near zero"
when stable value or overloaded

3

Continuous comparison,
excluding "near zero"4

Continuous comparison,
including "near zero"0

Digital input, upper/lower limits

1

Weighing input, upper/lower
limitsCp Hi,Cp lo can beselected.

2
3

Digital input, reference value

Cp ref,Cp l t can be

Weighing input, reference value selected.

Cp Hi

Upper limit

The stabilization indicatorilluminates with the display
fluctuation within the range.
With "Hold 1", sets thestabilization range.
Holds the display whenstable in animal mode. With
"Hold 1", ANIMAL turns on.

See "10-9 Comparator Function"

Displayed when Cpin 0
or Cpin 1 is selected.

See "10-9 Comparator Function"

Displayed when Cpin 2
or Cpin 3 is selected.

Lower limit

Cp ref
Reference value

Cp lmtTolerance
Factory setting

Note: "Digit" is a unit of miminum weighing value.

31

ClassItem

Parameter

0
dout

prt

Data output

Data output mode

1

2

3
ap-p
Auto print polarity

ap-b
Auto print differencedata
Data memory

intInterval timed-no
Data number output

5-id
ID number output

pU5e
Data output pause

at-fAuto feedinfo
GLP output

ar-d
Zero after output

Description
Key mode
Auto print mode A(Reference = zero)
Auto print mode B(Reference = last stable value)
Stream mode /Interval memory mode

Accepts the PRINT key only
when the display is stable.
Outputs data when the
dispaly is stable andconditions of ap-p, ap-b
and the reference value aremet.
With data 0, outputs data
continuously; with data 2,
uses interval memory.

0
1
2
0
1
2
0
1
2
0
1
2
3
4
5
6
7
8
0
1
0
1
0
1
0
1

Plus only

Displayed value>Reference

Minus only

Displayed value<Reference

Both

Regardless of displayed value

10 digits

Difference between

100 digits
1000 digits

reference value and0

No output

1

AD-8121 format

2

General data format0

Not used

Adjusts zero automatically

1

Used

after data is output.

Not usedStores unit mass in counting mode

Stores weighing data

displayed value
Related items: prt, int,d-noEvery measurement
Every 2 seconds
Every 5 seconds
Every 10 seconds
Every 30 seconds
Every 1 minuteInterval time in the interval
memory mode(with prt 3, data 2)

Every 2 minutes
Every 5 minutes
Every 10 minutes
No output
OutputNo output
OutputNo pause
Pause (1.6 seconds)
Not used
Used

Factory setting

32

See "12. DATA MEMORY".
Selects whether or not the
ID number is output.
Selects the data output
interval.
Selects whether or not auto
feed is performed.

Selects GLP output
method.

Class5if

Item

Description*600 bps

CTS, RTS control

0
1
2
3
4
0
1
2
0
1
0
1
2
3
4
5
0
1
0
1
0
1

ldin

0

Water temperature

1

Liquid density

bp5

Serial interface Baud rate

btpr
Data bit, parity bit

Crlf
Terminator

type
Data format

t-Up
Timeout

erCd
AK, Error code

Ct5
d5 fncParameter

Density function Liquid density input

mlt
Programmable-unit (Multi-unit)

Unit
Unit

id
ID number setting

1200 bps
2400 bps
4800 bps
9600 bps
7 bits, even7 bits, odd
8 bits, none
CR LF

CR: ASCII code 0Dh

CR

LF: ASCII code 0Ah

A&D standard format
DP format
KF format

See "10-6 Description of
Item "Data Format".

MT format
NU format
CSV format
No limit

Selects the wait time to

1 second

receive a command.

No output

AK: ASCII code 06h

OutputNot used
Used

Controls CTS and RTS.
Available only whendensity mode is selected.
See "15. DENSITYMEASUREMENT".

Available only when
Sets an arbitrary coefficient.
programmable-unit mode
See "14. PROGRAMMABLE-UNIT". is selected.
See "5. WEIGHING UNITS".
See "11. ID NUMBER AND GLPREPORT".
Factory setting

CautionThe balance may not transmit the data completely at the specified refresh rate, depending on
the baud rate or data added to the weighing data such as ID number.

33

10-4 Description of the Class “Environment, Display”
Condition ( Cond )Cond 0Cond 2This parameter is for sensitive response to the fluctuation of a weight value.
Used for powder target weighing, weighing a very light sample or whenquick response weighing is required.
After setting, the balance displays FAST.
This parameter is for stable weighing with slow response. Used to prevent aweight value from drifting due to vibration or drafts.
After setting, the balance displays SLOW.
Note
With “Hold function (Hold)” set to “ON (1)”, this item is used to set the
averaging time.

Stability band width ( 5t-b )This item controls the width to regard a weight value as a stable value. When the fluctuation persecond is less than the parameter, the balance displays the stabilization indicator and outputs orstores the data. The parameter influences the “Auto print mode”

5t-b 0This parameter is for sensitive response of the stabilization indicator. Usedfor exact weighing.

5t-b 2This parameter ignores slight fluctuation of a weight value. Used to preventa weight value from drifting due to vibration or drafts.
NoteWith “Hold function (Hold)” set to “ON (1)”, this item is used to set thestabilization range.

Hold function ( Hold ) (Animal weighing mode)This function is used to weigh a moving object such as an animal.
When the weighing data is over the weighing range from zero and the display fluctuation is within thestabilization range for a fixed period of averaging time, the processing indicator illuminates and thebalance displays the average weight of the animal. When the animal is removed from the weighingpan, the display returns to zero automatically.
This function is available only when the hold function parameter is set to “1” (the animal modeindicator ANIMAL illuminates) and any weighing unit other than the counting mode is selected.
Weighing range
GF-200/300/400/600/800/1000
0.200 g or overGF-1200/2000/3000/4000/6100 2.00 g or overGF-6000/8000
10.0 g or overNote
The Animal Weighing Bowl Kit (GX-12) is available
as an option for all models except GF-200.

The averaging time and stabilization range are set in “Condition (Cond)” and “Stability band width (5t-b)”.
Averaging time
Stabilization range
Cond 0 2 seconds
5t-b 0 About ±6% of the weight value
Faster|Cond 1 4 seconds
5t-b 1 About ±12% of the weight value
More accurate
Cond 2 8 seconds
5t-b 2 About ±25% of the weight value
34

Zero tracking ( trc )This function tracks zero point drift caused by changes in the environment and stabilizes the zero
point. When the weighing data is only a few digits, turn the function off for accurate weighing.
Note
Digit, when used for the GF series balance, indicates a unit of minimum weighing value.

trc 0
trc 1
trc 2
trc 3

The tracking function is not used. Used for weighing a very light sample.
The tracking function is used. Normal zero tracking.
The tracking function is used. Strong zero tracking.
The tracking function is used. Very strong zero tracking.

Display refresh rate ( 5pd )Period to refresh the display. This parameter influences “Baud rate”, “Data output pause” and“Stream mode”.
NoteThis item is selected automatically in the manual response adjustment.

Decimal point ( pnt )The decimal point format can be selected.

Auto display-ON ( p-on )When the AC adapter is connected, the display is automatically turned on without the ON:OFF key
operation, to display the weighing mode. Used when the balance is built into an automated system.
30-minute warm up is necessary for accurate weighing.

Auto display-OFF ( poff )When the AC adapter is connected and no operation is performed (inactivity state) for 10 minutes,
the display is automatically turned off and the standby indicator is illuminated.

Capacity indicator ( g5i )In the weighing mode, the indicator displays the weighing data relative to the weighing capacity inpercentage. (Zero = 0%, maximum capacity = 100%)
When the “Data memory ( data )” parameter is set to “1” (to store unit mass in the counting mode) or
to “2” (to store the weighing data), the indicator displays the information stored in memory, such as
the amount of memory data or data number.

35

10-5 Description of the Item “Data output mode”
The parameter setting of the “Data output mode ( prt )” applies to the performance when the “Datamemory ( data )” parameter is set to “2” (to store the weighing data) and when the data istransmitted using the RS-232C interface.

Key mode
When the PRINT key is pressed with the stabilization indictor turned on, the balance outputs orstores the weighing data and the display blinks one time.
Required setting

dout

prt 0

Key mode

Auto print modes A and B
When the displayed value is stable and the conditions of “Auto print polarity”, “Auto print difference”
and reference value are met, the balance outputs or stores the weighing data.
When the PRINT key is pressed with the stabilization indictor turned on, the balance outputs orstores the data and the display blinks one time.
Mode A: Required setting

ExampleMode B: Required setting

Example

dout
dout
dout

prt 1
ap-p
ap-b

Auto print mode A (reference = zero)
Auto print polarity
Auto print difference“For weighing the added sample each time a sample is added, with“ar-d” set to “1” (to adjust zero after the data is output).”

dout

prt 2

dout
dout

ap-p
ap-b

Auto print mode B (reference =last stable value)
Auto print polarity
Auto print difference“For weighing while a sample is added.”Stream mode
The balance outputs the weighing data continuously regardless of the display condition. The display
does not blink in this mode. This mode is not available and the interval memory mode is used whenthe “Data memory ( data )” parameter is set to “2” (to store the weighing data).
Required setting

dout
dout
ba5fnc5if

prt 3
data 05pd
bp5

Example“For monitoring data on a computer”

Stream mode
Data memory function is not used.
Display refresh rate
Baud rate

CautionThe balance may not transmit the data completely at the specified refresh rate, depending on
the baud rate or data added to the weighing data such as time, date and ID number.

36

Interval memory mode
The weighing data is periodically stored in memory.
Required setting

Example

dout
dout

prt 3
data 2

dout

intInterval memory mode
Data memory function is used.
Stores weighing data.
Interval time

“For periodical weighing without a computer command and to output
all of the data, to a computer, at one time”

10-6 Description of the Item “Data format”
5if type 0

A&D standard format

This format is used when the peripheral equipment can receive the A&D format. If an AD-8121B isused, set the printer to MODE 1 or 2.
 This format consists of fifteen characters excluding the terminator.
 A header of two characters indicates the balance condition.
 The polarity sign is placed before the data with the leading zeros. If the data is zero, the plus
sign is used.
 The unit, consisting of three characters, follows the data.
S T , +

0 0

HeaderDP (Dump print) format

0 1

Data

2 . 7

8 1 1 g CR LF

Unit

Terminator

5if type 1

This format is used when the peripheral equipment can not receive the A&D format. If an AD-8121B
is used, set the printer to MODE 3.
 This format consists of sixteen characters excluding the terminator.
 A header of two characters indicates the balance condition. No overload header is used.
 The polarity sign is placed before the data, with spaces in place of leading zeros, if the data is
not zero or overloaded.
 The unit, consisting of three characters, follows the data.

37

5if type 2

KF format

This is the Karl-Fischer moisture meter format and is used when the peripheral equipment can only
communicate using this format.
 This format consists of fourteen characters excluding the terminator.
 This format has no header characters.
 The polarity sign is placed before the data, with spaces in place of leading zeros, if the data is
not zero or overloaded.
 This format outputs the unit only for a stable value.
+

1 2 . 7

Data

MT format

8

g

CR LF

Unit

Terminator

5if type 3

 A header of two characters indicates the balance condition.
 The polarity sign is used only for negative data.
 The weighing data uses spaces in place of the leading zeros.
 The character length of this format changes dependent upon the unit
S

HeaderNU (numerical) format

1

g CR LF

2 . 7 8

Data

Unit Terminator

5if type 4

This format outputs only numerical data.
 This format consists of nine characters excluding the terminator.
 The polarity sign is placed before the data with the leading zeros. If the data is zero, the plus sign is used.

38

CSV format

5if type 5

 Separates the data of A&D standard format and the unit by a comma (,).
 Outputs the unit even when the data is overloaded.
 When the ID number and data number are added, outputs the ID number, data number andweighing data in this order and separates each item by a comma and treats all the items as one
group of data.

Note
To add the ID number and data number, the function settings must be changed.

10-7 Description of the Data Format Added to the Weighing Data
Data number

dout d-no 1

This format outputs the data number just before the data is transmitted using the RS-232C interface.
 This format consists of six characters excluding the terminator.
 When CSV format (5if type 5) is selected, the period ( . ) is replaced with a comma ( , ).

Note
The data number is added only to the weighing data that is stored in memory.

ID numberdout 5-id 1

The number to identify a specific balance.
 This format consists of seven characters excluding the terminator.

Note
When the data described above is added to the weighing data, the output is in thefollowing order: ID number, Data number, and Weighing data.

39

10-8 Data Format Examples
StableA&D S T , + 0 0 0 0 1 . 2 7
g CR LF
g CR LF+ 1 . 2 7
DP W TCR L
gKF
1 . 2 7+F
1
MT*
1 . 2 7
g CR LF
MT*2 S1 . 2 7
g CR LF
NU + 0 0 0 0 1 . 2 7 CR LF
Note
Two formats are available for MT. *1 is the output format when
the PRINT key or external print input is used. *2 is the output
format for others.

Unstable

A&D U
DP U
KF MT S
NU -

S ,
S

-

0 0
1

D
0 0 1 8

1
8 3
- 1
3 .

8
1
.
8
6

3 . 6 98 3 . 6 96 9
3 . 6 99 CR LF

g CR LF
g CR LF
CR LF
CR LF

Overload
Positive error

A&D O L , + 9 9 9 9 9 9 9 E + 1 9 CR LF
CR LF
E
DP
CR LF
H
KF
MT S I + CR LF
NU + 9 9 9 9 9 9 9 9 CR LF

Overload
Negative error

A&D O L , - 9 9 9 9 9 9 9 E + 1 9 CR LF
CR LF
- E
DP
CR LF
KF
L
C
L
S
I
MT
R F
NU - 9 9 9 9 9 9 9 9 CR LF

C
R
L
F

Space, ASCII 20h
Carriage Return, ASCII 0Dh
Line Feed, ASCII 0Ah

40

Units

D.P.

A&D

KF

MT

g

g

p c s

P C S

%

%

%

o z

o z

o z

o z

Pound

l b

l b

l b

l b

Pound Ounce

o z

o z

o z

o z

Troy Ounce

o z t

o z t

o z t

o z t

Metric Carat

c t

c t

c t

c t

Momme

m o m

m o m

m o m

m o

Pennyweight

d w t

d w t

d w t

d w t

Grain
(HK general,
Tael Singapore)
Tael (HK, jewelry)

G N

G N

g r

G N

t l

t l

t l s

t l

t l

t l

t l h

t l

Tael (Taiwan)

t l

t l

t l t

t l

Tael (China)

t l

t l

t l c

t l

Tola (India)

t

t

t o l

t

Messghal

m e s

m e s

M S

m

Density

D S

D S

D S

D S

g

g

Counting mode

P C

P C

Precent mode%

Ounce (Avoir)

g

Multi

(Blank)Space, ASCII 20h

Note
When “Pound Ounce” is selected, the data is output with the unit of ounce (oz).

4110-9 Comparator Function
The results of the comparison are indicated by HI OK LO on the display.
Operating conditions:  No comparison
 Comparison when the weighing data is stable or overloaded, excluding“near zero”
 Comparison when the weighing data is stable or overloaded, including“near zero”
 Continuous comparison, excluding “near zero”
 Continuous comparison, including “near zero”
 Upper limit value and lower limit value

To compare, use:

 Reference value and tolerance value
 Digital input

Input method: Weighing input Command input from a computer (Refer to “18. COMMANDS”.)
Note"Near zero" means within 10 digits of the minimum weighing value. For example, using a GF-2000
in gram mode, near zero is within 0.10 g.
For the description of “Comparator mode (Cp fnc)”, refer to “10-3 Details of the Function Table”.

Setting example 1(Continuous comparison, excluding “near zero”, reference value and tolerance value, digital input)
Selecting a comparator mode
1 Press and hold the SAMPLE key until ba5fnc of the function table is displayed.
2 Press the SAMPLE key several times to display

Cp fnc .

3 Press the PRINT key.
4 Press the RE-ZERO key several times to display

Cp 3 .

5 Press the SAMPLE key several times to display

Cp in .

6 Press the RE-ZERO key several times to display

Cp in 2 .

7 Press the PRINT key to store the selected mode.
Entering the reference and tolerance values
8 With Cp refdigits blinking.

displayed, press the PRINT key. The current setting is displayed with all the When the current setting is not to be changed, press the PRINT or CAL key to proceed tostep 9.
 When the current setting is to be changed, press the RE-ZERO key. Change the setting
using the following keys.
SAMPLE key
RE-ZERO key
MODE key
PRINT key
CAL key

To select the digit to change the value.
To change the value of the digit selected.
To switch the polarity.
To store the new setting and go to step 9.
To cancel the new setting and go to step 9.
42

9 With Cp lnt displayed, press the PRINT key. The current setting is displayed. When thecurrent setting is to be changed, change the setting using the following keys. Enter thetolerance value, in percentage to the reference value, as 100%.

10

SAMPLE key

To select the digit to change the value.

RE-ZERO key

To change the value of the digit selected.

PRINT key

To store the new setting and go to step 10.

CAL key

To cancel the new setting and go to step 10.

Press the CAL key to exit the comparator function and return to the weighing mode.

Setting example 2(Comparison when the weighing data is stable or overloaded, including “near zero”, upper limit andlower limit, weighing input)
Selecting a comparator mode
1 Press and hold the SAMPLE key until ba5fnc of the function table is displayed.
2 Press the SAMPLE key several times to display

Cp fnc .

3 Press the PRINT key.
4 Press the RE-ZERO key several times to display

Cp 2 .

5 Press the SAMPLE key several times to display

Cp in .

6 Press the RE-ZERO key several times to display

Cp in 1 .

7 Press the PRINT key to store the selected mode.

Entering the upper and lower limit values
8 WithCp Hi

displayed, press the PRINT key. The current setting is displayed with all of thedigits blinking. Press the RE-ZERO key to enter the weighing input mode.
9 Press the RE-ZERO key. The balance displays

0.00g. Place a sample with a mass that

corresponds to the upper limit value on the pan. Press the PRINT key to store the upper limit
value. Remove the sample. The balance displays

Cp lo .

10 With Cp lo displayed, press the PRINT key. The current setting is displayed with all of thedigits blinking. Press the RE-ZERO key to enter the weighing input mode.
11

Press the RE-ZERO key. The balance displays

0.00g. Place a sample with a mass that

corresponds to the lower limit value on the pan. Press the PRINT key to store the lower limit
value. Remove the sample.
12

Press the CAL key to exit the comparator function and return to the weighing mode.

Notes
When Pound/Ounce is selected as a weighing unit, enter the values in ounces forcomparison.
In the density mode, comparison is performed to the density obtained.
43

11. ID NUMBER AND GLP REPORT The ID number is used to identify the balance when Good Laboratory Practice (GLP) is used.
 The ID number is maintained in non-volatile memory even if the AC adapter is removed.
 The GLP output format is selected at “GLP output (info)” of the function table and can be
output to a personal computer or printer using the RS-232C serial interface.
 The GLP output format includes the balance manufacturer, model, serial number, ID number
and space for signature for weighing data, and the weight used and results for calibration orcalibration test data.
When the AD-8121B is used, the date and time can be printed using the AD-8121B clock andcalendar function. In this case, set the “GLP output ( info )” parameter to “1”.
 The balance can output the following reports for GLP.
“Calibration report” of the calibration, using an external weight.
“Calibration test report” of the calibration test, using an external weight.
“Title block” and “End block” for the weighing data.

11-1 Setting the ID Number
1 Press and hold the SAMPLE key until ba5fnc of the function table is displayed.
2 Press the SAMPLE key several times to display id .
3 Press the PRINT key. Set the ID number using the following keys.
RE-ZERO key

To set the character of the digit selected. Refer to the display characterset shown below.

SAMPLE key

To select the digit to change the value.

PRINT key

To store the new ID number and display ba5fnc.

CAL key

To cancel the new ID number and display ba5fnc.

4 With ba5fnc displayed, press the CAL key to return to the weighing mode.
Display character set

11-2 GLP Report
Set the following parameters to output the report.
 To print the report, set the “GLP output ( info )” parameter to “1” and use MODE 3 of the
AD-8121B. For details on using the printer, refer to “17-1 Connection to the AD-8121B Printer”.
If the time and date are not correct, adjust the AD-8121B clock and calendar.
 To output the report to a personal computer using the RS-232C interface, set the “GLP output( info )” parameter to “2”.
Note
For operational details about calibration and calibration test, refer to “8. CALIBRATION”.

44

Calibration report using an external weight
When the setting is “info 1”:

When the setting is “info 2”:

AD-8121 format

General data format

A & D
GF-2000
MODEL
S/N
01234567ID
ABCDEFGDATE 2 0 0 8 / 0 4 / 1 8
TIME
1 1 : 1 2 : 09
C A LI B R A T E D( E X T . )C A L. W E I G H T+ 2 0 0 0. 0 0g
S I GN A T U R E- - - -

A & D<TERM>
MO DELGF -2 00 0<TERM>
S/ N
012 34 56 7<TERM>ID
AB CD EF G<TERM>DA TE<TERM><TERM>TI ME<TERM><TERM>CA LIB RA TED( EX T. )<TERM>
CAL.WEIGHT<TERM>+2 000. 00 g<TERM>SI GNA TU RE<TERM><TERM><TERM>- - -- - - - - - - - -- - - - <TERM><TERM><TERM>

Manufacturer
Model
Serial number
ID number
Date
Time
Calibration type
Calibration
weightSignature- - - -Space, ASCII 20h<TERM> Terminator, CR , LF or CR
CR Carriage return, ASCII 0Dh
LF Line feed, ASCII 0Ah

Calibration test report using an external weight(Calibration test does not perform calibration.)
When the setting is “info 1”:

When the setting is “info 2”:

AD-8121 format

General data format

A & D
GF-2000
MODEL
S/N
01234567ID
A BC D E F G 2 0 2 0
DATE 2 0 0 8 / 0 4 / 1 8
TIME
11:12:09
C AL . T E S T (E X T . )A CT U A L
0.00 g+ 1 99 9 . 9 9 g
T AR G E T+2000.00 g
S IG N A T U R E
- -

- -

-

- -

Manufacturer
Model
Serial number
ID number
Date
Time
Calibration test
type
Zero point value
Target weightvalue
Target weight
Signature-

Space, ASCII 20h<TERM> Terminator, CR , LF or CR
CR Carriage return, ASCII 0Dh
LF Line feed, ASCII 0Ah

45

A & D <TERM>
M ODELGF -200 0<TERM>
S /N
0 12 3456 7<TERM>ID
AB CDEF G<TERM>
D ATE<TERM><TERM>T IME<TERM><TERM>C AL.T ES T( EX T.)<TERM>ACTUAL<TERM>
0. 00 g<TERM>+1 99 9. 99 g<TERM>TARGET<TERM>+2 00 0. 00 g<TERM>
S IGNA TU RE <TERM><TERM><TERM>- - -- - - -- - - - -- - - -<TERM><TERM><TERM>

Title block and end block
When a weight value is recorded as the GLP data, “Title block” and “End block” are inserted at the
beginning and at the end of a group of weight values, in the GLP report.

Note
To output the report to an AD-8121B , use MODE 3 of the AD-8121B.

CautionIf the data memory function is used, the “Title block” and “End block” can not be output.

Operation
1 With the weighing data displayed, press and hold the PRINT key until S5tart
The “Title block” is output.

is displayed.

2 The weighing data is output according to the parameter setting of the data output mode.
3 Press and hold the PRINT key until

recendWhen the setting is “info 1”:

When the setting is “info 2”:

Title blockAD-8121 format
A & D
G F- 2 0 0 0
M O D EL0 1 23 4 5 6 7
S/N
A
B
CD
EFG2 0 2 0
ID
2
0
0
8
/04/18DATE
S T A RT
1 1 :1 2 : 0 9
TIME
WT
WT
WT
WT
WT
WT
WT
WT

+ 12 3 4 . 5 6+ 12 3 4 . 6 1+ 12 3 4 . 6 2+ 12 3 4 . 6 3+ 12 3 4 . 5 1+ 12 3 4 . 5 3+ 12 3 4 . 7 1+ 12 3 4 . 6 4

g
g
g
g
g
g
g
g

END
0 3 : 5 0 : 30 0 P M
S I G N A T UR E--

- - - -

is displayed. The “End block” is output.

Manufacturer
Model
Serial number
ID number
Date
Time

Weighing data

Time
Signature- -End blockSpace, ASCII 20h<TERM> Terminator, CR , LF or CR
CR Carriage return, ASCII 0Dh
LF Line feed, ASCII 0Ah

46

General data format
A & D <TERM>
MO DE LG F- 20 00 <TERM>
S/ N
01 23 45 67 <TERM>
ID
A BC DE FG <TERM>DA TE <TERM><TERM>ST AR T<TERM>
TI ME <TERM><TERM>
WT+ 1234 .5 6 g <TERM>
WT+ 1234 .6 1 g <TERM>
WT+ 1234 .6 2 g <TERM>
WT+ 1234 .6 3 g <TERM>
WT+ 1234 .5 1 g <TERM>
WT+ 1234 .5 3 g <TERM>
WT+ 1234 .7 1 g <TERM>
WT+ 1234 .6 4 g <TERM><TERM>
EN D<TERM>
TI ME <TERM><TERM>SI GN AT URE<TERM><TERM><TERM>- - -- - - - - - - - - - - - - <TERM><TERM><TERM>

12. DATA MEMORY
Data memory is a function to store weighing data and unit mass in memory. Of the data in memory,the balance can only display the weighing data. The weighing data in memory is available for
outputting at one time to a printer or personal computer.
One of the following data set can be stored: Weighing data (Up to 40 sets.)
 Unit mass in the counting mode (Up to 20 sets)

12-1 Notes on Using Data Memory
To use the memory function, set the “Data memory ( data )” parameter of the function table. For
details on setting the data memory, refer to “10. FUNCTION TABLE”.

Releasing “Clr”
If a different type of data exists in memory when the data is stored, “Clr” appears blinking in theupper left of the display. For example, you want to store weighing data but unit mass data remains inmemory.

Under such a condition, before storing data, delete the data in memory as follows:
1 Press and hold the PRINT key until SClr nowith “no” blinking is displayed.

2 Press the RE-ZERO key to display SClr gowith “go” blinking.

The type of data stored in memory appears on the upper left of the display as shown below:
Unit mass in the counting mode
Weighing data without time and datepC
-d-

3 Press the PRINT key to delete all the data in memory.
4 The balance displays

end

and returns to the weighing mode.

47

12-2 Memory for Weighing Data
 The data memory function can store 40 sets of weighing data. Even if the AC adapter isremoved, the data is maintained in non-volatile memory.
 It is not necessary that the printer or computer be continually connected to the balance,
because the balance stores the weighing data in memory.
 The data in memory is available to be displayed on the balance for confirmation, or to output
several sets of data at one time to a printer or personal computer. In the function setting, what
data is to be added to the output data (ID number and data number) can be selected.

Storing the weighing data
Note
If “Clr” appears blinking in the upper left of the display, delete the data in memory.
1 Set the “Data memory ( data )” parameter to “2”.
2 The storing operation depends on the “Data output mode ( prt )” parameter setting. Fourtypes of operating modes are available to store data.
Key mode

When the PRINT key is pressed and the displayed value isstable, the balance stores the weighing data.

Auto print modes A and B

When the displayed value is stable and the conditions of “Autoprint polarity”, “Auto print difference” and reference value aremet, the balance stores the weighing data.

Interval memory mode

Weighing data is stored at an interval specified in “Interval time(int)”. Press the PRINT key to start and stop this mode.

Caution When weighing data is being stored in memory, the data can not be output to a personal
computer using the RS-232C interface.
“fUl” indicates that memory is full or the memory capacity has been reached. More data can
not be stored unless the memory data is deleted.

48 The following commands can not be used during data storage.
Q

Query command for weighing data.

S, ESCP Query command for stable weighing data.
SI

Query command for weighing data.

SIR

Query command for continuous weighing data.

E
SC : 1Bh in ASCII code

Setting the function table
Parameter settings for each output mode are as follows:
Item
Data output Auto print Datamemory Interval
modepolarity,
functiontime
Mode
difference
prt 0
data 2
Key mode
Not usedNot used
ap-a 0-2
prt 1
data 2
Auto print mode A
ap-b 0-2
prt 2
data 2
Auto print mode B
prt 3
data 2
int 0-8
Interval memory modeNot usedSet each item, depending on the situation, as follows:
d-no 0
Data numberNod-no 1Yes
5-id 0ID number
No
5-id 1
Yes

Enabling the data memory function
1 Press and hold the SAMPLE key until ba5fnc of the function table is displayed.
dout

2 Press the SAMPLE key several times to display.

3 Press the PRINT key.
4 Press the SAMPLE key three times to display
5 Press the RE-ZERO key to change

data 0

data 0 .
todata 2 .

6 Press the PRINT key to save.
7 Press the

CAL

key to return to the weighing mode.

49

Recalling the memory data
Confirm that the “Data memory ( data )” parameter is set to “2”.
1 Press and hold the PRINT key until

reCall is displayed.

2 Press the PRINT key to enter the memory recall mode. Recall the data in memory using thefollowing keys
RE-ZERO key

To proceed to the next data set.

MODE key

To go back to the previous data set.

PRINT key

To transmit the current data using the RS-232C interface.

With SAMPLE held down, press the CAL key
To delete the data currently displayed.
Note: Deleting the data will not increase the number of data that can be stored.
CAL key

To exit the memory recall mode.

3 Press the CAL key to return to the weighing mode.

Transmitting all memory data at one time
Confirm that the “Serial interface ( 5if )” parameters are set properly. For details, refer to “10.
FUNCTION TABLE” and “17. CONNECTION TO PERIPHERAL EQUIPMENT”.
1 Press and hold the PRINT key until

reCall is displayed.

2 Press the SAMPLE key to displayout .

3 Press the PRINT key to display Sout no
5 Press the RE-ZERO key to display

with “no” blinking.

out gowith “go” blinking.

6 Press the PRINT key to transmit all data using the RS-232C interface.
7 The balance displays
weighing mode.

Clear when all data is transmitted. Press the CAL key to return to the

Deleting all memory data at one time
1 Press and hold the PRINT key until

reCall is displayed.

2 Press the SAMPLE key several times to display
3 Press the PRINT key to display SClr no

Clear .

with “no” blinking.

4 Press the RE-ZERO key to display SClr gowith “go” blinking.

5 Press the PRINT key to delete all data
6 The balance displays

end , thenreCall when all data is deleted.

7 Press the CAL key to return to the weighing mode.

50

12-3 Memory for Unit Mass in the Counting Mode The data memory function can store 20 sets of unit mass for the counting mode. Even if theAC adapter is removed, the data is maintained in non-volatile memory. Among the 20 sets,“p01” is the memory function for the standard counting mode.
 The unit mass in memory can be recalled and used for weighing.
 The unit mass in memory can be recalled and changed.

Recalling the unit mass
1 Set the “Data memory ( data )” parameter to “1”.
2 Press the MODE key to select PC (counting mode).
Notes
If the counting mode can not be selected, refer to “5. WEIGHING UNITS”.
If “Clr” appears blinking in the upper left of the display, delete the data in memory.
3 Press and hold the PRINT key until the balance enters
the sample unit mass selection mode as shown below.

4 Select the unit mass to be used using the following keys.
RE-ZERO key
MODE key
PRINT key
CAL key

To increase the unit mass number by one.
To decrease the unit mass number by one.
To select the unit mass number to be used.
To cancel the operation and go to step 5.

5 To re-store the unit mass or perform Automatic Counting Accuracy Improvement (ACAI) on
the stored unit mass, follow the procedure described in “6-2 Counting Mode (PC)”.
Notes
ACAI can not be performed on the recalled unit mass.
Using the “UN:mm” command, the unit mass stored in memory can be recalled. (“mm” will
be replaced by a two-digit number, 01 to 20, that corresponds to the unit mass numbers,
P01 to P20.) The recalled unit mass can be output by the “?UW” command and can bechanged by the “UW: ” command.

51

13. UNDERHOOKThe underhook can be used for weighing large samples, magnetic materials or for measuring density.
The built-in underhook is revealed by removing the plastic cap on the bottom of the balance.
Use the underhook as shown below.

Caution
Do not apply excessive force to the underhook.
When not in use, attach the plastic cap to prevent dust from getting into the balance.

52

14. PROGRAMMABLE-UNIT
This is a programmable unit conversion function. It multiplies the weighing data in grams by anarbitrary coefficient set in the function table and displays the result.
The coefficient must be within the range between the minimum and maximum shown below. If thecoefficient set is beyond the range, an error is displayed and the balance returns to the coefficientsetting mode, prompting to enter an appropriate value. A coefficient of 1 was set at the factory.
Model
GF-200/300/400/600/800/1000
GF-1200/2000/3000/4000/6100
GF-6000/8000

Minimum coefficient
0.000001

Maximum coefficient
1000
100
10

Operation
1 Press and hold the SAMPLE key until ba5fnc of the function table is displayed.
2 Press the SAMPLE key several times to display

mltCadj .

3 Press the PRINT key. The balance enters the mode to confirm or set the coefficient.
Confirming the coefficient
4 The current coefficient is displayed with the first digit blinking.
 When it is not to be changed, press the CAL key and proceed to step 6.
 When it is to be changed, press the RE-ZERO key
and proceed to step 5.
Setting the coefficient
5 Set the coefficient using the following keys.
SAMPLE key
RE-ZERO key
MODE key

PRINT key
CAL key

To select a digit to change thevalue. The selected digit blinks.
To change the value.
To change the decimal point
position.
Each time the switch is pressed,
the decimal point positionchanges as follows:

To store the new setting,display end and go to step 6.
To cancel the new setting and
go to step 6.

Quitting the operation
6 The balance displays Unit . Press the CAL key to exit the programmable-unit function andreturn to the weighing mode.
Using the function
Press the MODE key to select the programmable-unit (no display on the unit section). Perform
weighing as described in “6-1 Basic Operation (Gram Mode)”. After weighing, the balancedisplays the result (weighing data in grams x coefficient).
53

15. DENSITY MEASUREMENTThe GF series balance is equipped with a density mode. It calculates the density of a solid using theweight of a sample in air and the weight in liquid.
 The density mode was not selected for use when the balance was shipped from the factory. To
use the mode, change the function table and activate the density mode.
 Two ways to set the density of a liquid are available:
by entering the water temperature or by entering the density directly.
 The density determination kit (GX-13) is available as an option for GF-200/300/400/600/800/1000.

Formula to obtain the density
The density can be obtained by the following formula.
Where

A:
A:
B:
B:

Density of a sample
Weight value of a sample in air
Weight value of a sample in liquid
Density of a liquid

Changing the function table(1) Selecting the density mode
The density mode is available as one of the weighing units. To use the mode, select it in thefunction table. For details, refer to “5-2 Storing Units”.
(2) Selecting a way to set the density of a liquid
Select the liquid density input method from the function table below. The function table isavailable only when the density mode is selected.
Class
d5 fncDensity function

Item
ld in
Liquid density input

Parameter
Description0
Water temperature
1
Liquid density
0 = Factory setting

Setting the density of a liquid
1. Press the MODE key as necessary to select the density mode. When the processing indicator
blinks with the unit “g” displayed, it indicates that the density mode is selected.
2. In the density mode, press and hold the MODE key to enter the mode to set the liquid density.
Note
In the normal weighing mode, the same procedure will activate the manual response
adjustment/self check function. These are not available in the density mode.

Entering the water temperature ( ldin 0 )In the density mode, press and hold the MODE key until the water temperature currently set (unit:C,
factory setting : 25C) is displayed. Use the following keys to change the value.
RE-ZERO key

To increase the temperature by one degree. (0-99)

MODE key

To decrease the temperature by one degree. (0-99)

PRINT key

To store the change, display

CAL key

To cancel the change and return to the density mode.
54

end

and return to the density mode.

The relation between the water temperature and density is shown below.

Entering the density directly ( ldin 1 )In the density mode, press and hold the MODE key until the density currently set (unit : g / cm3,
factory setting : 1.000g / cm3) is displayed. Use the following keys to change the value.

RE-ZERO key

To set the value of the digit selected.

SAMPLE key

To select the digit to change the value.

PRINT key

To store the change, display

CAL key

To cancel the change and return to the density mode.

end

and return to the density mode.

Note
The range to set the density is 0.0000 to 1.9999 g / cm3

Measuring the density
In the density measurement, the balance displays the weight of a sample in air, the weight in liquid
and then the density.
 Measuring the weight of a sample in air.

The processing indicator blinks with the unit “g” displayed.
 Measuring the weight of a sample in liquid.

The processing indicator illuminates with the unit “g” displayed.
 Displaying the density.

The processing indicator illuminates with “DS” displayed.
To cycle through the above three, press the SAMPLE key.
Note
The SAMPLE key can not be used to change the minimum weighing value. The density isdisplayed with three decimal places.
55

Measuring procedure
1 Confirm that the balance is in the mode to measure theweight of the sample in air. (“g” displayed and processing
indicator blinking)2 Confirm that the balance indicates zero. If it does notindicate zero, press the RE-ZERO to reset the displayed
value to zero.
3 Place the sample on the upper pan (in air). When thevalue displayed on the balance becomes stable, press
the SAMPLE key to confirm the value (the weight of thesample in air). The balance enters the mode to measure
the weight of the sample in liquid (“g” displayed andprocessing indicator illuminating).

"" blinks.

Note
If a negative value or E (error) is displayed, the SAMPLE
key is disabled.
4 Remove the sample from the upper pan and place it on
the lower pan (in liquid). When the value displayed on the" "illuminates.

balance becomes stable, press the SAMPLE key toconfirm the value (the weight of the sample in liquid). Thebalance enters the mode to display the density (“g”disappears).

Density mode
" " illuminates.

Note
If E (error) is displayed, the SAMPLE key is disabled.
5 To output or store the density, press the PRINT key. The
density output unit is “DS”. To measure the density of
another sample, press the SAMPLE key to return to themode to measure the weight in air and repeat theprocedure described above.
Note

If the liquid temperature or the type of liquid is changed during measurement, reset the valueof the liquid density as necessary. For details, refer to “Setting the density of a liquid”.

5616. RS-232C SERIAL INTERFACE / EXTERNAL INPUT
Transmission system
Transmission form
Data format:::

EIA RS-232C
Asynchronous, bi-directional, half duplex
Baud rate: 600, 1200, 2400, 4800, 9600 bps
Data bits: 7 or 8 bits
Parity: Even, Odd (Data bits 7 bits)
None(Data bits 8 bits)
Stop bit: 1 bitCode: ASCII

Pin connections
Pin No.
1
2
3
4
5
6
7
18
19
8 – 25 (Excluding 18 and19)

Signal name Direction Description
FG
Frame ground
RXD
Input
Receive data
TXD
Output Transmit data
RTS
Input
Ready to send
CTS
Output Clear to send
DSR
Output Data set readySG
Signal ground
PRINT
Input
Same as the PRINT key
RE-ZERO
Input
Same as the RE-ZERO key
Not connected

Circuits

57

External input
Pin 18 and pin 19 perform the same function as pressing the PRINT and RE-ZERO keys
respectively by connecting each pin to pin 7 for at least 100 ms.

Use of example

The external input connector (AX-HDB-25P/CTF)
and the foot switch (AX-SW128) are sold separately.

58

17. CONNECTION TO PERIPHERAL EQUIPMENT
17-1 Connection to the AD-8121B PrinterSet the following parameters to use the AD-8121B printer.
Function setting
dout prt 0-3
dout ap-p 0-2
dout ap-b 0-2
dout pU5e 0,1
5if bp5 2
5if btpr 0
5if Crlf 0
5if Ct5 0

Factory setting
Factory setting
Factory setting
Factory setting

Description
Selects a print mode.
Selects the polarity for the auto print mode.
Selects the auto print difference.
Selects data output pause.
2400 bps
7 bits, Even parity check
CR, LFCTS and RTS control, not used

When “MODE 1” or “MODE 2” of the AD-8121B printer is used
dout 5-id 0
Factory setting
Does not output the ID number.
dout at-f 0
Factory setting
Does not perform auto feed.
5if type 0
Factory setting
A&D standard format
When “MODE 3” of the AD-8121B printer is used.
dout 5-id 0、1Select whether or not the ID number is output.
dout at-f 0、1
Select whether or not auto feed is performed.
5if type 1
DP format
When data is transmitted continuously./When all memory data is transmitted at one
time.
dout pU5e 1
Uses pause.
Note
The printer performs as follows, depending on the data memory setting.
Settingdata 0
data 2

What is printed
The weighing data
The weighing data stored in memory

Refer to “11. ID NUMBER AND GLP REPORT” for a print sample.

17-2 Connection to a Computer
The GF series balance is of the DCE type (Data Communication Equipment), which can beconnected to a personal computer using the RS-232C interface.
Before connection, read the personal computer manual thoroughly.
Use a standard DCE cable for connection (cable type: straight-through).

59

17-3 Using Windows Communication Tools (WinCT)
When Windows is used as an operating system in a personal computer, the WinCT software canbe used to transmit the weighing data to the personal computer.
The WinCT has two communication methods: “RsCom” and “RsKey”. For details on WinCT, referto the WinCT instruction manual.
The current version of the WinCT can be downloaded from the A&D website.

RsCom Can transmit commands to control the balance.
 Can make bi-directional communication between the balance and a personal computer using
the RS-232C interface.
 Can display or store the data using a text file format. Can also print the data using a printerconnected to the personal computer.
 When several ports of a personal computer have balances connected, the personal computercan communicate with each balance simultaneously.
 Can share a personal computer with other application software.
 Can receive the balance GLP report.

RsKey Can transmit the weighing data output from the balance directly to other application software
such as Microsoft Excel.
 Can be used with most application software.
 Can receive the balance GLP report.
Note
Windows and Excel are the registered trademarks of the Microsoft Corporation.

Using the WinCT software, the balance can do the following:
1 Analyzing the weighing data and the statistics input by “RsKey”
The weighing data can be input directly into an Excel worksheet. Then, Excel can analyze thedata to obtain total, average, standard deviation, maximum and minimum value, and display
them in a graph.
2 Controlling the balance using commands from a personal computer
By using “RsCom”, the personal computer sends commands such as “re-zero” or “sendweighing data” to the balance and controls the balance.
3 Printing the balance GLP report using your printerThe balance GLP report can be printed using a printer connected to the personal computer.
4 Receiving weighing data at a certain interval
The weighing data can be received at a certain interval and data characteristic with elapsed
time can be obtained.

60

5 Using the GF series balance memory function
The weighing data, instead of outputting it immediately to an external device, can be stored in
the balance’s memory. Later, all of the weighing data stored can be output to a personal
computer at one time.
6 Using a personal computer as an external indicator
With the “RsKey” test mode function, a personal computer can be used as an external weightindicator for the balance. (To do this, set the balance data output mode to stream mode.)6118. COMMANDS
18-1 Command List
Commands to query weighing data
C
Q
S
SI
SIR
E
SCP

Cancels the S or SIR command.
Requests the weighing data immediately.
Requests the weighing data when stabilized.
Requests the weighing data immediately.
Requests the weighing data continuously.
Requests the weighing data when stabilized.

Note: The “Q” and “SI” commands, the “S” and “ESCP” commands behave the same.

Commands to control the balance
CAL
MCL
MD:nnnOFF
ON
P
PT:. 

g

?PT
R
SMP
U
T
TR

Z
E
SCT

Same as the CAL key.
Deletes all data in memory.
Deletes weighing data with the data number nnn.
Turns the display off.
Turns the display on.
Same as the ON:OFF key
Sets the tare value.
The unit added is the unit that is output in the A&D standard format. For
the counting or percent mode, gram is used. Set the tare value so thatthe total value of the sample and the tare does not exceed the weighing
capacity. Negative values can not be used.
Requests the tare value.
Outputs the tare value set by the TR or PT: command.
Same as the RE-ZERO key
Same as the SAMPLE key.
Same as the MODE key
Same as the RE-ZERO key
Tares the balance (Cancels the container’s weight.)
Available only when the load on the weighing pan is greater than thezero point. The zero point is set by the R, T or Z command, by pressing
the RE-ZERO key, or using the external input.
Same as the RE-ZERO key
Same as the RE-ZERO key

Note: The “R”, “T”, “Z” and “ESCT” commands behave the same.

Commands to control the memory function?MA?MQnnn?MX
MCL
MD:nnn
UN:mm?UN
UW:. 
?UW
?ID
?SN
?TN

g

Outputs all data in memory.
Outputs weighing data with the data number nnn.
Outputs the number of weighing data in memory.
Deletes all data in memory.
Deletes weighing data with the data number nnn.
Changes the unit mass stored in memory with the number of mm (01-20).
Outputs the unit mass number of the selected unit mass.
Sets the unit mass value. e.g.,UW:+0.123
g (to set the unit mass to
0.123 g: represents a space.)
Outputs the unit mass value of the selected unit mass number.
Requests the ID number.
Requests the serial number.
Requests the model name.

62

Commands to control the comparator function
HI:. g

LO:. 

g

?HI
?LO

Sets the upper limit value. e.g.,HI:+2.34
value to 2.34 g: represents a space.)
Sets the lower limit value. e.g.,LO:+1.23
value to 1.23 g: represents a space.)
Outputs the upper limit value.
Outputs the lower limit value.

g (to set the upper limitg (to set the lower limit

Notes“nnn” and “mm” indicate, respectively, three-digit and two-digit numerical values.
E
SC : 1Bh in ASCII code
Before transmitting a command, add the terminator (<CR><LF> or <CR>), that is specified in
the “Terminator (Crlf)” parameter of “Serial interface (5if)” in the function table, to thecommand.
To use a command to control the comparator function, set the “Input method (Cpin)” parameter to “0” or“1”.

18-2 Acknowledge Code and Error Codes
When the “Serial interface function ( 5if )” parameter is set to “erCd 1”, the balance outputs <AK>code or an error code for each command as follows:<AK> (06h)Acknowledge in ASCII code.

 When the balance receives a command to request data and can not process it, the balancetransmits an error code (EC, Exx).
When the balance receives a command to request data and can process it, the balance
outputs the data.
 When the balance receives a command to control the balance and can not process it, thebalance transmits an error code (EC, Exx).
When the balance receives a command to control the balance and can process it, the balancetransmits the acknowledge code.
 When a communication error has occurred due to external noise, or a parity error has
occurred due to transmission error, the balance transmits an error code. In this case, send thecommand again.
Among commands to control the balance, the following transmit the acknowledge code bothwhen the balance receives the command and when the balance has accomplished thecommand. If the command can not be processed properly, the balance transmits an error code
(EC, Exx). This error can be released using the CAL command.
CAL command (Calibration command)

ON command (Display ON command)

P command (Display ON/OFF command)

R command (RE-ZERO command)

TR command (Tare command)63

18-3 Command Examples
ON command

Personal computer

Time

BalanceStandby mode

ON command
O N CR LF
AK CR LF

All segments

AK CR LF

Command received
All segments are displayed

Command completed
Zero display

R command

Personal computer

Time

Balance
Weighing mode

R command
R CR LF
AK CR LF

Command received
In process

AK CR LF

Command completed
Zero display

64Error code

Personal computer

Time

Balance
Weighing mode (unstable)

R command
R CR LF
AK CR LF

Command received
In process
When the R command can not be
achieved due to unstable weighing:E C ,E 1 1 CR LF

Error code

CAL command
When the CAL command isreceived, the balance returns to
the weighing modeC A L CR LF

AK CR LF

Command completed
Weighing mode

65

Weighing with a tare
Personal computer

Time

Balance

R command

Sets the display to zero

R CR LF
AK CR LF

Command received
In process

AK CR LF

Command completed
Zero display

Place a container

TR command
Tares

T R CR LF
AK CR LF

Command received
In process

AK CR LF

Command completed
Zero display

S command
R CR LF

ＳＴ，＋００１００．００?PT commandｇ(Net value)? P T CR LF

ＰＴ，＋００１２６．８７(Tare value)66ｇSetting a negative target value and filling with a sample until the display becomes zero
Personal computer

Time

Balance
Place a container
Before commandexecution

R command
R CR LF
AK CR LF

Command received
In process

AK CR LF

Zero display

PT: command to set a target weight of 100 g
P T :1 0 0 .

0 0

Command completed

g CR LF
AK CR LF

Command received
Target weight display

Fill with sample until thedisplay becomes zero

18-4 Control Using CTS and RTS
Depending on the “Ct5” parameter of “Serial interface ( 5if )”, the balance performs as follows:

Ct5 0
Regardless of whether the balance can receive a command or not, the balance keeps the CTS line
HI. The balance outputs data regardless of the condition of the RTS line.

Ct5 1
The CTS line is kept Hi normally. When the balance can not receive the next command (e.g. while
the balance is processing last command), the balance sets the CTS line to Lo. The balance confirms
the level of the RTS line before outputting a set of data. If the RTS level is Hi, the balance outputs
data. If the RTS level is Lo, data is not output (The data is canceled).

18-5 Settings Related to RS-232C
Concerning the RS-232C, the balance has two functions: “Data output ( dout )” and “Serial interface( 5if )”. Set each function as necessary.
6719. MAINTENANCE
 Do not use organic solvents to clean the balance. Clean the balance with a lint free cloth thatis moistened with warm water and a mild detergent.
 Do not disassemble the balance. Contact the local A&D dealer if the balance needs service orrepair.
 Use the original packing material for transportation.

20. TROUBLESHOOTING
20-1 Checking the Balance Performance and Environment
The balance is a precision instrument. When the operating environment or the operating method isinadequate, correct weighing can not be performed. Place a sample on the pan and remove it, andrepeat this several times. If the balance seems to have a problem with repeatability or to perform
improperly, check as described below. If improper performance persists after checking, contact the
local A&D dealer for repair.

Checking that the balance performs properly Check the balance performance using the self-check function as described in “7-2 Self Check
Function”.
An error display appears when a malfunction is found.
 Check the balance repeatability using an external weight. Be sure to place the weight in thecenter of the weighing pan.
 Check the balance repeatability, linearity and calibrated value using external weights with aknown value.

Checking that the operating environment or weighing method is proper
Operating environment
 Is the weighing table solid enough (especially for the GF-200/300/400/600/800/1000, thebalance with a minimum weighing value of 0.001 g)?
 Is the balance level? Refer to “3-1 Before Use”.
 Is the operating environment free from vibration and drafts? For the GF-200/300/400/600/800/
1000, has the breeze break been installed?
 Is there a strong electrical or magnetic noise source such as a motor near the balance?

Weighing method Does the weighing pan touch the breeze ring or anything? Is the weighing pan installed
correctly?
 Is the RE-ZERO key pressed before placing a sample on the weighing pan?

68 Is the sample placed in the center of the weighing pan?
 Has the balance been calibrated using an external mass?
 Has the balance been warmed up for 30 minutes before weighing?
Sample and container
 Has the sample absorbed or lost moisture due to the ambient conditions such as temperatureand humidity?
 Has the temperature of the container been allowed to equalize to the ambient temperature?
Refer to “3-2 During Use”.
 Is the sample charged with static electricity? Refer to “3-2 During Use”.
The GF-200/300/400/600/800/1000 is prone to be charged with static electricity when therelative humidity is low.
 Is the sample of magnetic material such as iron? Caution is required for weighing magnetic
materials. Refer to “3-2 During Use”

20-2 Error Codes
Display

Error code
EC, E11

Description
Stability error
The balance can not stabilize due to an environmental
problem. Prevent vibration, drafts, temperaturechanges, static electricity and magnetic fields.
Refer to “3. PRECAUTIONS” for details on theoperatingenvironment
and“7.
RESPONSE
ADJUSTMENT” about adapting the balance to theenvironment.
To return to the weighing mode, press the CAL key.
Out of range error
The value entered is beyond the settable range.
Re-enter the value.

EC, E20

Calibration weight error
The calibration weight is too heavy. Confirm thecalibration weight value.
Press the CAL key to return to the weighing mode.

EC, E21

Calibration weight error
The calibration weight is too light. Confirm thecalibration weight value.
Press the CAL key to return to the weighing mode.
Overload error
A sample beyond the balance weighing capacity has
been placed on the pan.
Remove the sample from the pan.

69

Display

Error code

Description
Weighing pan Error
The weight value is too light.
Confirm that the weighing pan is properly installed andcalibrate the balance.
Sample mass error
The balance can not store the sample for the counting
mode or for the percent mode because it is too light.
Use a larger sample.
Unit mass error
The sample unit mass for the counting mode is toolight. Storing and using it for counting will cause acounting error.
Add samples to reach the specified number and press
the PRINT key.
Pressing the PRINT key without adding samples will
shift the balance to the counting mode. But, for
accurate counting, be sure to add samples.
Internal error
Indicates an internal error as the result of self-check
function.

(CHECK NO)

Repair is required. Contact the local A&D dealer.
Memory full
(Blinking)

The amount of weighing data in memory has reached the
maximum capacity.
Delete data in memory to store new data. For details, refer
to “12. DATA MEMORY”.
Memory type error
Type of memory set in the function table and type ofdata stored are different.
For details, refer to “12. DATA MEMORY”.
EC, E00

Communications error
A protocol error occurred in communications.
Confirm the format, baud rate and parity.

EC, E01

Undefined command error
An undefined command was received.
Confirm the command.

EC, E02

Not readyA received command can not be processed.
e.g. The balance received a Q command, but not in theweighing mode.
e.g. The balance received a Q command while
processing a RE-ZERO command.
Adjust the delay time to transmit a command.

70

Display

Error code
EC, E03

Description
Timeout error
If the timeout parameter is set to “t-Up1”, the balance
did not receive the next character of a command within
the time limit of one second.
Confirm the communication.

EC, E04

Excess characters error
The balance received excessive characters in acommand.
Confirm the command.

EC, E06

Format error
A command includes incorrect data.
e.g. The data is numerically incorrect.
Confirm the command.

EC, E07

Parameter setting error
The received data exceeds the range that the balance
can accept.
Confirm the parameter range of the command.

Other errors

If the errors described above can not be released orother errors are displayed, contact the local A&D dealer.

20-3 Asking For Repair
If the balance needs service or repair, contact the local A&D dealer.
The balance is a precision instrument. Use much care when handling the balance and observe
the following when transporting the balance.
 Use the original packing material.
 Remove the weighing pan from the main unit

71

21. SPECIFICATIONS

Weighing capacity
Maximum display

GF-200

GF-300

GF-400

GF-600

GF-800

GF-1000

210 g

310 g

410 g

610 g

810 g

1100 g210.084 g 310.084 g 410.084 g

610.084 g

Minimum weighing value (1 digit)

0.001 gRepeatability (Standard deviation)

0.001 g0.002 g

Linearity
Stabilization time (typical at FAST)

810.084 g 1100.084 g

0.003 gApprox. 1 second

Approx. 1.5 seconds

Sensitivity drift(10°C-30°C/50F-86F )±2 ppm/°C

Operating environment

5°C to 40°C (41°F to 104°F)
85%RH or less (No condensation)

Display refresh rate

5 times/second or 10 times/second

Counting
mode
Percent
mode

Minimum unit mass

0.001 gNumber of samples

10, 25, 50 or 100 pieces
0.100 gMinimum 100% reference mass

Minimum 100% display

External calibration weight

0.01%, 0.1%, 1% (Depends on the reference mass stored.)
200 g
100 g

300 g
200 g
100 g

400 g
300 g
200 g

600 g
500 g
400 g
300 g
200 g

Weighing pan

128 x 128 mm

Net weight

Approx. 3.8 kg

External dimensions
AC adapter
Power consumption

800 g
700 g
600 g
500 g
400 g
300 g
200 g

1000 g
900 g
800 g
700 g
600 g
500 g
400 g
300 g
200 g

210 (W) x 317 (D) x 88 (H) mm
Confirm that the adapter type is correct for the local voltage and power
receptacle type
Approx. 11VA (supplied to the AC adapter)

Interface

RS-232C

72

GF-1200 GF-2000 GF-3000 GF-4000 GF-6100 GF-6000 GF-8000
Weighing capacity

1210 g2100 g

3100 g4100 g6100 g6100 g8100 gMaximum display

1210.84g

2100.84g

3100.84g

4100.84g

6100.84g

6108.4 g

8108.4 g

Minimum weighing value (1 digit)

0.01 g

0.1 g

Repeatability (Standard deviation)

0.01 g0.1 g

Linearity
Stabilization time (typical at FAST)

0.02 g0.03 g0.1 gApprox. 1 second

Approx.
1.5 sApprox. 1 second

Sensitivity drift (10°C-30°C/50F-86F )±2 ppm/°C

Operating environment

5°C to 40°C (41°F to 104°F)
85%RH or less (No condensation)

Display refresh rate

5 times/second or 10 times/second

Counting
mode
Percent
mode

Minimum unit mass

0.01 gNumber of samples

External calibration weight

0.1 g

10, 25, 50 or 100 pieces

Minimum 100% reference mass

Minimum 100% display±5 ppm/°C1.00 g10.0 g0.01%, 0.1%, 1% (Depends on the reference mass stored.)1000 g500 g2000 g1000 g3000 g2000 g1000 g4000 g3000 g2000 gWeighing pan

165 x 165 mm

Net weight

Approx. 4.3 kg

External dimensions
AC adapter
Power consumption

6000 g5000 g4000 g3000 g2000 g6000 g5000 g4000 g3000 g2000 g8000 g7000 g6000 g5000 g4000 g3000 g2000 g210 (W) x 317 (D) x 88 (H) mm
Confirm that the adapter type is correct for the local voltage and power
receptacle type
Approx. 11VA (supplied to the AC adapter)

Interface

RS-232C

73

22. OPTIONSGlass Breeze Break(GX-10)For GF-200/300/400
600/800/1000

Glass Breeze Break Animal Weighing Bowl
Density Determination(GX-11)
Kit (GX-12)
Kit (GX-13)
For GF-1200/2000/3000
For all models except GF-200
For GF-200/300/400
4000/6100/6000
The mass of the Animal Weighing
600/800/1000
Bowl Kit is approx. 200g.
8000

GX-02 USB interface (Applicable OS is Windows 98 OSR2 or later.)
To be installed in place of the RS-232C interface.
 May be used to transmit the balance weighing data to a personal computer.
 The balance weighing data can be transmitted to applications such as Excel, Word and memo
pad for Windows automatically.
 Driver installation is not necessary.
 To perform bi-directional communications using WinCT, to output the statistical data or GLP toa personal computer by using the personal computer USB interface, use the AX-USB-25P
USB converter.

AD-1682 Rechargeable battery
 Allows use of the balance in a place where AC power is not available.

AD-8121B Printer Compact dot-matrix printer Statistical function, clock and calendar function, interval
print function, graphic print function, dump print mode
 5 x 7 dots, 16 characters per line Print paper (AX-PP143, 45 (W) x 50 (L) mm , ø65 mm)
 AC adapter or alkaline battery.

AD-8526 LAN converter This option can be used to connect the RS-232C
interface of the balance to the Ethernet (LAN) port of acomputer. This allows management of the balance
weighing data with a computer connected to a network.

74AD-8920 Remote display
 Connected to the GF series using the RS-232C interface to display the weighing data awayfrom the balance..

AD-8922 Remote controller Connected to the GF series using the RS-232C interface to display the weighing data and toremotely control the balance.

AX-SW128 Foot switch
 Used to externally transmit a RE-ZERO or PRINT signal to the balance.

AX-USB-25P-EX USB converter Adds a COM port to a PC.
 Enables bi-directional communication between the PC and the balance when a USB driver isinstalled.
 Can use serial communication software such as WinCT on a PC without COM ports.
 An RS-232C cable is provided to connect the USB converter to the balance.
RS-232C
on the GF seriesbalance

USB serial
converter

RS-232C cable provided(D-sub 25-pin)

75

To USB port
on a PC

AD-1683 DC static eliminator Used to minimize weighing errors due to static electricity on the material.

AD-1684 Electrostatic field meter This option measures the amount of the static charge on the sample, tare or peripheral
equipment and displays the result.
If those are found to be charged, discharge them using the AD-1683 DC static eliminator.

AD-1689 Tweezers for calibration weight This option is used when calibrating the balance using an external weight.

Options installed at the factory before shipment:
GX-04 Comparator output with a buzzer / RS-232C / Current loop output
 Used to compare weighing data and output the results.

GX-06 Analog output / Current loop output
 Used to output the weighing data as an analog voltage.

76

23. EXTERNAL DIMENSIONS

Unit: mm77

24. TERMS/INDEX
Terms
Stable value

The weight data when the stabilization indicator appears.

Environment

Ambient conditions such as vibration, drafts, temperature, static electricity andmagnetic fields which affect the weighing operation.

Store

To save the weighing data, unit mass or calibration data using the data memory
function.

Calibration

Adjustment of the balance so that it can weigh accurately.

OutputTo output the weighing data using the RS-232C interface.

Zero point

A weighing reference point or the zero display. Usually refers to the value
displayed when nothing is on the weighing pan.

Data number

Numbers assigned sequentially when weighing data or unit weight is stored.

Digit

Unit of digital resolution. Used for the balance, a unit of minimum weighing value.

Tare

To cancel the weight of a container which is not included in the weighing data.

Mode

Balance operational function.

Re-zeroTo set the display to zero.

GLP

Good Laboratory Practice.

Repeatability

Variation in measured values obtained when the same weight is placed andremoved repetitively. Usually expressed as a standard deviation.
e.g. Standard deviation=1 digit: This means that measured values fall within 1
digit in the frequency of about 68%.

Stabilization time Time required after a sample being placed, until the stabilization indicatorilluminates and the weighing data is displayed.
Sensitivity drift

An affect that a change in temperature causes to the weighing data. Expressedas temperature coefficient.
e.g. Temperature coefficient = 2 ppm/C : If a load is 300 g and the temperaturechanges by 10C, the value displayed changes by the following value.
0.0002%/C x 10C x 300 g = 6 mg

78

Index
Data number ..........................................38, 78
Density determination kit..............................54
Digit..........................................24, 26, 78
DP (Dump print) format ................................37

Keys and symbols
ON/OFF key ............................... 11, 28
SAMPLE key .............................. 11, 15
MODE key ............................ 11, 12, 15
CAL key ...................................... 11, 15
PRINT key .................................. 11, 15
RE-ZERO key ......................... 9, 11, 15
Stabilization indicator............... 11, 15Interval memory active indicator .... 11Interval memory standby indicator. 11
Processing indicator ...................... 11-EEC, E00 ......................................................70
EC, E01 ......................................................70
EC, E02 ......................................................70
EC, E03 ......................................................71
EC, E04 ......................................................71
EC, E06 ......................................................71
EC, E07 ......................................................71
EC, E11 ......................................................69
EC, E20 ......................................................69
EC, E21 .................................................... 69
Environment .................................................78
External input ...............................................58-AA&D standard format ................................... 37
AC adapter................................................. 6, 7
AC adapter ID label ................................... 6, 7
AC adapter jack ......................................... 6, 7
AC adapter plug......................................... 6, 7
ACAI...................................................... 19
AD-1682 Rechargeable battery .................. 74
AD-1683 DC static eliminator ..................... 76
AD-1684 Electrostatic field meter ............... 76
AD-1689 Tweezers for calibration weight ... 76
AD-8121B Printer......................................... 74
AD-8526 LAN converter ............................. 74
AD-8920 Remote display............................ 75
AD-8920 Remote controller ........................ 75
Animal mode indicator ................................. 11
Auto display-OFF......................................... 35
Auto display-ON........................................... 35
Auto print mode ........................................... 36
AX-SW128 Foot switch ............................. 75
AX-USB-25P-EX USB converter.................. 75-GGlass breeze break ......................................74
GLP............................................3, 44, 78
Grounding terminal ....................................6, 7
GX-02 USB interface.................................74
GX-04 Comparator output/RS-232C/Current loop output.76
GX-06 Analog output/Current loop output............76
GX-10 Glass breeze break .......................74
GX-11 Glass breeze break .......................74
GX-12 Animal weighing bowl kit ...............74
GX-13 Density determination kit ...............74-HHold function ................................................34-IID number ....................................................44
Inhibit......................................................28
Initializing the Balance .................................29
Interval memory mode .................................37-BBreeze break ................................... 3, 7, 9, 68
Breeze ring .............................................. 7, 68
Bubble spirit level....................................... 6, 7

-K-

-C-

Key mode.....................................................36
KF format .....................................................38

Calibration.............................................. 23, 78
Calibration test............................................. 26
Capacity indicator .............................. 3, 11, 35
Comparator indicators ................................. 11
Comparator function .................................... 42
CSV format .................................................. 39-LLeveling foot...............................................374
Linearity ..........................................68, 72, 73

-M-

-D-

Main unit cover...........................................6, 7
Memory full ............................................48, 70

Data memory ............................................... 47
79

Mode
...................................................... 78
MT format .................................................... 38

Sensitivity drift..................................72, 73, 78
Stability band width ......................................34
Stabilization time ..........................................78
Stable value .....................................21, 34, 78
Static electricity ........................................9, 69
Store......................................................78
Stream mode ...............................................36-NNU (Numerical) format................................. 38-OOutput ...................................................... 78
100% reference mass.................................. 20-TTare-p-......................................................78-U-

Pan support receptor ................................. 6, 7
Percent Mode .............................................. 20
Permit ...................................................... 28

Underhook ...................................................52
Unit mass.....................................................18
Units......................................................12

-R-

-W-

Reference card ...................................... 3, 6, 7
Repeatability.............................. 68, 72, 73, 78
RESPONSE ................................................ 22
Response characteristic .............................. 21
Re-zero ...................................................... 78
RS-232C serial interface.............................. 57
RsCom ...................................................... 60
RsKey ...................................................... 60

Warm up .....................................................7,8
Weighing capacity..........................3, 9, 35, 69
Weighing pan .............................................6, 7
WinCT..................................................3, 60-ZZero point................................... 25, 27, 35, 78
Zero tracking ................................................35-SSelf check function ...................................... 2280

3-23-14 Higashi-Ikebukuro, Toshima-ku, Tokyo 170-0013, JAPAN
Telephone: [81] (3) 5391-6132
Fax: [81] (3) 5391-6148

A&D ENGINEERING, INC.
1756 Automation Parkway, San Jose, California 95131, U.S.A.
Telephone: [1] (408) 263-5333
Fax: [1] (408)263-0119

A&D INSTRUMENTS LIMITED
Unit 24/26 Blacklands Way, Abingdon Business Park, Abingdon, Oxfordshire OX14 1DY United Kingdom
Telephone: [44] (1235) 550420
Fax: [44] (1235) 550485

A&D AUSTRALASIA PTY LTD
32 Dew Street, Thebarton, South Australia 5031, AUSTRALIA
Telephone: [61] (8) 8301-8100
Fax: [61] (8) 8352-7409

A&D KOREA Limited

한국에이.엔.디(주)서울특별시 영등포구 국제금융로6길33 (여의도동) 맨하탄빌딩 817 우편 번호 150-749( 817, Manhattan Bldg., 33. Gukjegeumyung-ro 6-gil, Yeongdeungpo-gu, Seoul, 150-749 Korea )전화: [82] (2) 780-4101
팩스: [82] (2) 782-4280

OOO A&D RUS

OOO "ЭЙ энд ДИ РУС"121357, Российская Федерация, г.Москва, ул. Верейская, дом 17( Business-Center "Vereyskaya Plaza-2" 121357, Russian Federation, Moscow, Vereyskaya Street 17 )тел.: [7] (495) 937-33-44
факс: [7] (495) 937-55-66

A&D INSTRUMENTS INDIA PRIVATE LIMITED( 509, Udyog Vihar, Phase- , Gurgaon - 122 016, Haryana, India ): 91-124-4715555: 91-124-4715599