A&D GX-8000 User Manual

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GX SERIES

GX-200/GX-300/GX-400

GX-600/GX-800/GX-1000

X-2000/GX-3000/GX-4000/GX-6100

GX-6000/GX-8000

Multi-Function Balance

INSTRUCTION MANUAL

1WMPD4000087D

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 this

manual 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

6-4 Animal Weighing Mode (Hold Function)........................................................................................... 21

7. RESPONSE ADJUSTMENT / SELF CHECK FUNCTION............................................................22

7-1 Automatic Response Adjustment / Self Check Function .................................................................. 22

7-2 Manual Response Adjustment.......................................................................................................... 23

8. CALIBRATION ..............................................................................................................................24

8-1 Calibration Group ............................................................................................................................. 24

8-2 Automatic Self Calibration (Calibration due to changes in temperature)................................... 25

8-3 Calibration Using the Internal mass (One-Touch Calibration) .................................................... 25

8-4 Calibration Using an External Weight............................................................................................... 26

8-5 Calibration Test Using an External Weight ....................................................................................... 28

8-6 Correcting the Internal Mass Value .................................................................................................. 30

Functions

9. FUNCTION SWITCH AND INITIALIZATION.................................................................................32

9-1 Permit or Inhibit ................................................................................................................................ 32

9-2 Initializing the Balance...................................................................................................................... 33

10. FUNCTION TABLE .....................................................................................................................34

10-1 Structure and Sequence of the Function Table .............................................................................. 34

10-2 Display and Keys............................................................................................................................ 34

10-3 Details of the Function Table .......................................................................................................... 35

10-4 Description of the Class “Environment, Display” ............................................................................38

10-5 Description of the Item “Data output mode” ................................................................................... 40

10-6 Description of the Item “Data format” ............................................................................................. 41

10-7 Description of the Data Format Added to the Weighing Data ............................................................... 43

10-8 Data Format Examples................................................................................................................... 44

10-9 Clock and Calendar Function ......................................................................................................... 46

10-10 Comparator Function.................................................................................................................... 48

11. ID NUMBER AND GLP REPORT................................................................................................50

11-1 Setting the ID Number .................................................................................................................... 50

11-2 GLP Report ..................................................................................................................................... 51

12. DATA MEMORY ..........................................................................................................................54

12-1 Notes on Using Data Memory ........................................................................................................ 54

12-2 Memory for Weighing Data............................................................................................................. 55

12-3 Memory for Calibration and Calibration Test Data.......................................................................... 58

12-4 Memory for Unit Mass in the Counting Mode ................................................................................. 59

13. UNDERHOOK.............................................................................................................................60

14. PROGRAMMABLE-UNIT ...........................................................................................................61

RS-232C Serial Interface

15. DENSITY MEASUREMENT........................................................................................................62

16. RS-232C SERIAL INTERFACE / EXTERNAL INPUT ................................................................65

17. CONNECTION TO PERIPHERAL EQUIPMENT ........................................................................67

17-1 Connection to the AD-8121B Printer .............................................................................................. 67

17-2 Connection to a Computer.............................................................................................................. 67

17-3 Using Windows Communication Tools (WinCT)............................................................................. 68

18. COMMANDS...............................................................................................................................70

18-1 Command List................................................................................................................................. 70

18-2 Acknowledge Code and Error Codes ............................................................................................. 71

18-3 Command Example ........................................................................................................................ 72

18-4 Control Using CTS and RTS .......................................................................................................... 76

18-5 Settings Related to RS-232C ......................................................................................................... 76

Maintenance

19. MAINTENANCE..........................................................................................................................77

20. TROUBLESHOOTING ................................................................................................................77

20-1 Checking the Balance Performance and Environment................................................................... 77

20-2 Error Codes .................................................................................................................................... 78

20-3 Asking For Repair ........................................................................................................................... 81

21. SPECIFICATIONS.......................................................................................................................82

22. OPTIONS ....................................................................................................................................84

23. EXTERNAL DIMENSIONS .........................................................................................................87

24. TERMS/INDEX............................................................................................................................88

1. INTRODUCTION

This manual describes how the GX 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 Manual

This 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 the

balance.

Maintenance ................................... Describes maintenance, error codes, troubleshooting,

specifications and options.

1-2 Features

 Built-in Calibration Weight (hereinafter referred to as internal mass), allows easy calibration,

adjustment and maintenance of the balance.

 Automatic Self Calibration, using the internal mass, adapting to changes in temperature.

 Self Check Function, provided to self-check the balance using the internal mass.

 Automatic Response Adjustment, adapting to vibration and drafts in the environment.

 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 been achieved.

 Data Memory Function, storing weighing data, calibration data or unit mass in the counting

mode. (About weighing data, 200 sets of data can be stored.) Interval Memory Mode is provided to weigh a sample 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 a Windows-based

personal computer. Windows is the registered trademark of the Microsoft Corporation.

 Clock and Calendar Function, adding the time and date to the output data.

 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 GX-200/300/400/600/800/1000, for more accurate weighing.

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 and under these circumstances the user would be required to take, at his own expense, whatever measures are necessary to eliminate the interference.

(FCC = Federal Communications Commission in the U.S.A.)

Compliance with EMC Directives

This device features radio interference suppression in compliance with valid

EC Regulation 89/336/EEC.

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 that

everything is contained.

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

How to assemble the breeze break (Only for GX-200/300/400/600/800/1000)

Assemble the breeze break as shown below. Follow the numbered sequence.

Bubble spirit level

Display

Weighing pan

Main unit

Pan support receptor

Main unit rear side

Windows communication tools (WinCT)

Note

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

Reference card

AC adapter

Keys

Leveling foot

Grounding terminal

AC adapter jack

AC adapter ID label

AC adapter plug

RS-232C serial interface External input terminal

Main unit cover

GX-2000/3000/4000/6100/6000/8000

Breeze ring

Weighing pan

Bubble spirit level

Display

Reference card

Windows communication tools (WinCT)

Keys

Leveling foot

Grounding terminal

AC adapter jack

Main unit

Pan support receptor

Main unit rear side

RS-232C serial interface (External input terminal)

AC adapter plug

Note

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

AC adapter

AC adapter ID label

Main unit cover

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 weighing table.

2. GX-200/300/400/600/800/1000

Assemble the breeze break on the balance as shown in the illustration above.

GX-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 with nothing on the weighing pan.

3. PRECAUTIONS

To get the optimum performance from the balance and acquire accurate weighing data, note the

following:

3-1 Before Use

 Install the balance in an environment where the temperature 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 vibration and

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 from vibration,

drafts and as level as possible.

 Level the balance by adjusting the leveling feet and confirm 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.

3-2 During Use

 Discharge static electricity from the material to be

weighed (hereinafter referred to as sample). When a

sample 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 the

balance assembly, so please use caution when weighing magnetic materials such as iron. If there is a problem, use the underhook on the bottom of the balance to suspend the material away from the influence of the magnet.

 Cancel 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 the true 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 the

balance 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 is

required.

 Keep the balance interior free of dust and foreign materials.

 The breeze break (GX-200/300/400/600/800/1000 only) and the clear main unit cover are

provided 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 the balance has a problem with repeatability, remove the breeze break. Or wipe the clear plates with a moistened cloth, use an accessory DC static eliminator, AD-1683, or apply an anti-static spray.

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 or

repair.

 Do not use organic solvents to clean the balance. Clean the balance with a lint free cloth that

is 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

 Do not remove the AC adapter while the internal mass is in motion, for example, right after the

AC adapter is connected, or during calibration using the internal mass. If the AC adapter is removed under the conditions described above, the internal mass will be left unsecured, that may cause mechanical damage when the balance is moved.

Before removing the AC adapter, press the ON:OFF key and confirm that zero is displayed.

 When the AC adapter is connected, the balance is in the standby mode if the standby indicator

is on (refer to “4. DISPLAY SYMBOLS AND KEY OPERATION”). This is a normal state and

does not harm the balance. For accurate weighing, warm up the balance for at least 30 minutes

before use.

4. DISPLAY SYMBOLS AND KEY OPERATION

Key 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

・

Displays data stored in memory

・

Displays the weighing data relative to the weighing capacity, in percentage, in the weighing mode

Processing indicator

Stabilization indicator

Standby indicator

Data number of the

(Capacity indicator)

Weighing data or stored data

(Displayed for about 30 seconds when weighing starts.)

Animal mode indicator

Comparator indicators

Units

Interval memory standby indicator

data currently displayed

Processing indicator

Prior notice indicator of automatic self calibration

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

Key When pressed When pressed and held

Turns the display on and off. The standby indicator is displayed when the display is

turned off. The weighing mode is enabled when the display is turned on. This key is available anytime. Pressing the key during operation will interrupt the

operation and turn the display off.

Blinking indicators

Interval memory active indicator

Performs calibration of the balance using

In the weighing mode, turns the minimum weighing value on and off.

In the counting or percent mode, enters the sample storing mode.

Switches the weighing units stored in the function table. Refer to “5. WEIGHING UNITS”.

the internal mass.

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 table settings.

Sets the display to zero.

Enters the function table mode. Refer to “10. FUNCTION TABLE”.

Performs response adjustment and self check.

Displays other items of the calibration menu.

No function at the factory setting

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 GX series balance, the following weighing units and weighing modes are available :

Pct OZ

OZt

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

Programmable-unit (No unit displayed. For details, refer to "14. PROGRAMMABLE-UNIT".)

blinks with the unit "g" displayed. "DS" appears only when the density value is displayed.)

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 the sequence. 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.

dwt

For details about the units and modes, see the table below:

Name (unit, mode) Abbrev. Display

Function table (Storing mode)

Conversion factor

1 g = Gram g 1 g

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 g

Pennyweight dwt 1.55517384 g

Grain (UK) GN 0.06479891 g

Tael (HK general, Singapore) 37.7994 g

Tael (HK jewelry) 37.429 g

Tael (Taiwan) 37.5 g

Tael (China)

31.25 g

Tola (India) t 11.6638038 g

Messghal MS 4.6875 g

Density mode (See note below)

is used to

show the density.

Programmable-unit (Multi-unit) Mlt

Note: The blinking processing indicator with “g” indicates that the density mode is selected.

The tables below indicate the weighing capacity and the minimum display for each unit, depending

on the balance model.

Unit

Gram

Ounce (Avoir)

Pound

Pound/Ounce 0Lb 7.41oz

Troy Ounce

Metric Carat

Momme

Pennyweight

Grain (UK)

Tael (HK general,

Singapore)

Tael (HK jewelry)

Tael (Taiwan)

Tael (China)

Tola (India)

Messghal

GX-200 GX-300 GX-400 GX-600 GX-800 GX-1000

210 310 410 610 810 1100

7.40 10.93 14.46 21.51 28.57 38.80

0.462 0.683 0.903 1.344 1.785 2.425

0Lb 10.93oz 0Lb 14.46oz 1Lb 5.52oz 1Lb 12.57oz 2Lb 6.80oz

6.75 9.96 13.18 19.61 26.04 35.36

1050 1550 2050 3050 4050 5500

56.0 82.6 109.3 162.6 216.0 293.3

135 199 263 392 520 707

3240 4784 6327 9413 12500 16975

5.55 8.20 10.84 16.13 21.42 29.10

5.61 8.28 10.95 16.29 21.64 29.38

5.60 8.26 10.93 16.26 21.60 29.33

6.72 9.92 13.12 19.52 25.92 35.20

18.0 26.5 35.1 52.2 69.4 94.3

44.8 66.1 87.4 130.1 172.8 234.6

Capacity

Minimum

0.000005

display

0.001

0.00005

0.01oz

0.00005

0.005

0.0005

0.001

0.02

0.00005

0.0001

0.0005

Unit

Gram 2100 3100 4100 6100 0.01

Ounce (Avoir) 74.0 109.3 144.6 215.1 0.0005

Pound 4.62 6.83 9.03 13.44 0.00005

Pound/Ounce 4Lb 10.08oz 6Lb 13.35oz 9Lb 0.62oz 13Lb 7.17oz 0.01oz

Troy Ounce 67.5 99.6 131.8 196.1 0.0005

Metric Carat 10500 15500 20500 30500 0.05

Momme 560 826 1093 1626 0.005

Pennyweight 1350 1993 2636 3922 0.01

Grain (UK) 32408 47840 63272 94137 0.2

Tael (HK general,

Singapore)

Tael (HK jewelry) 56.1 82.8 109.5 162.9 0.0005

Tael (Taiwan) 56.0 82.6 109.3 162.6 0.0005

Tael (China) 67.2 99.2 131.2 195.2 0.0005

Tola (India) 180 265 351 522 0.001

Messghal 448 661 874 1301 0.005

GX-2000 GX-3000 GX-4000 GX-6100

Capacity

55.5 82.0 108.4 161.3 0.0005

Minimum

display

Unit

Gram 6100 8100 0.1

Ounce (Avoir) 215 285 0.005

Pound 13.4 17.8 0.0005

Pound/Ounce 13Lb 7.17oz 17Lb 13.72oz 0.01oz

Troy 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 (HK general,

Singapore)

Tael (HK jewelry) 162 216 0.005

Tael (Taiwan) 162 216 0.005

Tael (China) 195 259 0.005

Tola (India) 522 694 0.01

Messghal 1301 1728 0.05

GX-6000 GX-8000

Capacity

161 214 0.005

Minimum

display

5-2 Storing Units

The units or modes can be selected and stored in the function table. The sequence of displaying the units 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 follow s:

1 Press and hold the SAMPLE key until ba5fnc of

the function table is displayed, then release the key.

2 Press the SAMPLE key several times to display

1Unit .

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

4 Specify a unit or mode in the order to be displayed

using the following keys.

SAMPLE key To sequentially display the units.

RE-ZERO key To specify a unit or mode. The

stabilization indicator appears when the displayed unit or mode is specified.

Press and hold

Press several times

Select

Displays the units sequentially.

Specify

5 Press the PRINT key to store the units or modes. The

balance displays end and then displays the next menu of the function table.

6 Press the CAL key to exit the function table. Then the

balance returns to the weighing mode with the selected unit.

7 To select other unit or mode for weighing, press the MODE key.

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.

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 indicator appears when the unit is specified.

5 Press the SAMPLE key to display 1Unit pC .

6 Press the RE-ZERO key to specify the unit of pc

The stabilization indicator appears when the unit is specified.

7 Press the PRINT key to store the units.

The balance displays end and then displays the next menu item of the function table.

8 Press the CAL key to exit the function table. Then the

balance returns to the weighing mode with g, the unit selected first.

9 Press the MODE key to switch between g and pc

(g→pc).

Press and hold

Press several times

Specify

Select

Specify

Store

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). The

balance displays 0.00 g. (The decimal point position depends on the balance model.)

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

3 Wait for the stabilization indicator

Read the value.

4 Remove the sample and container from the pan.

Notes

To use other units, press the MODE key and select an

appropriate 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 placed on the weighing pan and weighing is started, the balance automatically cancels the weight (tare) and displays 0.00 g.

to be displayed.

Weighing pan

Container

Sample

Remove the sample

(Display off)

Weighing pan

Container

6-2 Counting Mode (PC)

This is the mode to determine the number of objects in a sample based on the standard sample unit mass. 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 GX series balance is equipped with the Automatic 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 the

minimum 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 mass

storing mode.

Even in the storing mode, pressing the MODE key will

switch 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.

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.

5 Place the number of samples specified on the pan. In this

example, 25 pieces.

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 maintained even if the AC adapter is removed.)

to be displayed.

Weighing pan

Container

Sample (25 pieces)

To improve the accuracy of the unit mass, proceed to

step 8.

Notes

If the balance judges that the mass of the samples is too

light and is not adequate to be used as the unit mass, it displays lo . Do not use the samples.

If the balance judges that the mass of the samples is too

light to aquire accurate weighing, it displays an error requiring the addition of more samples to the specified number. In the example above, 150- pC appears, 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.

Counting operation

7 Place the samples to be counted on the pan.

Place sample to be counted

Note

Up to 20 unit masses can be stored in memory for the multiple sample. For details, refer to “12. DATA MEMORY”.

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 not

touch 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 the

improved unit mass.

6-3 Percent Mode (Pct)

This is the mode to display the weight value in percentage compared to a 100% reference mass and

is used for target weighing or checking the sample variable.

Selecting the percent mode

1 Press the MODE key to select pct (percent mode). If the

percent 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 will

switch to the next mode.

3 Place a container on the weighing pan, if necessary.

Press the RE-ZERO key to cancel the weight (tare). The balance displays 100 0 pct .

Weighing pan

Container

4 Place the sample to be set as the 100% reference mass

on the pan or in the container.

5 Press the PRINT key to store the reference mass. The

balance displays 100.00 pct . (The decimal point position depends on the reference value. The reference mass stored is stored 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 too light to be used as a reference, it displays lo . Do not use the sample.

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.

Sample (100%)

Place sample to be weighed

Weighing result compared to 100% reference mass

6-4 Animal Weighing Mode (Hold Function)

This is the mode to weigh a moving object such as an animal, even when the display of the weighing data fluctuates. The hold function allows the average weight of the animal to be displayed. To use the hold function, set the function in the function table. For details, refer to “10. FUNCTION TABLE” and “10-4 Description of the Class “Environment, Display””.

7. RESPONSE ADJUSTMENT / SELF CHECK FUNCTION

This function detects the influence on weighing that is caused by drafts and/or vibration at the place where the balance is installed and sets the response characteristic automatically. When this function is selected, the balance self-checks the performance at the same time.

Two modes of response adjustment are available: automatic and manual.

The function has three rates as follows:

Changing the response rate changes the display refresh rate.

Indicator Parameter Response characteristic Display refresh rate

FAST Cond 0 MID. Cond 1 SLOW Cond 2

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)” parameter of “Environment, Display (ba5fnc)” in the function table. For details, refer to “10. FUNCTION TABLE”.

Fast response, Sensitive value

Slow response, Stable value

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

Response indicators

7-1 Automatic Response Adjustment / Self Check Function

This function automatically updates the response adjustment by analyzing the influence of the environment on the weighing data and also self-checks the balance performance using the internal mass.

Operation

1 Press and hold the MODE key until RESPONSE is

displayed, then release the key.

2 The balance automatically starts to check the balance

performance and sets the response characteristic.

Press and hold the key

Release the key

Caution

Do not allow vibration or drafts to affect the balance during adjustment.

3 After automatic adjustment, the balance displays the

updated response indicator and returns to the weighing mode. The response indicator remains displayed for about 30 seconds.

e.g. “ MID. OK ”

The example above indicates that the result of the self check is good and MID. is selected as

the response rate.

Displays the results.

Notes

If improper performance is found in the self check, the

balance displays CH no . Contact the local A&D dealer for repair.

If the automatic response adjustment fails, the

balance displays CH ng . Check the ambient conditions such as breeze and vibration, also check the weigning pan. Then, perform the adjustment again. To return to the weighing mode, press the CAL key.

If the automatic response adjustment is awkward, try

to refine it using the manual response adjustment.

7-2 Manual Response Adjustment

This function manually updates the response adjustment.

Operation

1 Press and hold the MODE key until RESPONSE is

displayed, then release the key.

Press and hold the key

Press the MODE key again quickly.

2 Press the MODE key to select a rate of the response

adjustment. Either FAST, MID. or SLOW can be selected.

3 After a few seconds of inactivity the balance displays

eend . Then, it returns to the weighing mode and

displays 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 the function table. For details, refer to “10. FUNCTION TABLE”.

Release the key and press again

Each pressing switches the indicators

After a while

8. CALIBRATION

8-1 Calibration Group

The GX series balance has the following modes as a calibration group.

Calibration  Automatic self calibration (calibration due to changes in temperature  Calibration using the internal mass (one-touch calibration)  Calibration using an external weight Calibration test  Calibration test using an external weight (Calibration test does not perform calibration.) Correction of the internal mass value

Terms

The following terms are defined as follows: Internal mass = Built-in calibration weight External weight = A weight that you have. Referred to as a calibration weight when used for calibration. 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 “Data output

( dout )”. For details, refer to “10. FUNCTION TABLE”. Time and date are added to GLP report. If the time or date is not correct, adjust them. For details, refer to “10-9 Clock and Calendar Function”.

 Calibration test is available only when “GLP output ( info )” of “Data output ( dout )” is set to “1” or “2”,  The calibration and calibration test data can be stored in memory. To store them, set “Data

memory ( data )” to “3”. For details, refer to “12. DATA MEMORY”.

Caution on using an external weight

 The accuracy of an external weight can influence the accuracy of weighing. Select an

appropriate weight as listed below:

Model Usable calibration weight Adjustable range

GX-200 200 g, 100 g GX-300 300 g, 200 g, 100 g GX-400 400 g, 300 g, 200 g GX-600 600 g, 500 g, 400 g, 300 g, 200g GX-800 800 g, 700 g, 600 g, 500 g, 400 g, 300 g, 200g GX-1000 1000g, 900g, 800 g, 700 g, 600 g, 500 g, 400 g, 300 g, 200g GX-2000 2000 g, 1000 g GX-3000 3000 g, 2000 g, 1000 g GX-4000 4000 g, 3000 g, 2000 g GX-6100 6000 g, 5000 g, 4000 g, 3000 g, 2000g GX-6000 6000 g, 5000 g, 4000 g, 3000 g, 2000g GX-8000 8000 g, 7000 g, 6000 g, 5000 g, 4000 g, 3000g, 2000g

The calibration weight in bold type: factory setting The calibration weight value can be adjusted within the range above.

-0.015 g to +0.015 g

-0.15 g to +0.15 g

-1.5 g to +1.5 g

Display



This indicator means “the balance is measuring calibration data”. Do not allow vibration or drafts to affect the balance while this indicator is displayed.

8-2 Automatic Self Calibration (Calibration due to changes in temperature)

This function automatically calibrates the balance when the balance detects an ambient temperature change. If GLP output is selected in the function table, the balance outputs the calibration report or stores the data in memory. Automatic self calibration functions even if the display is turned off (standby state). ,

Caution

If something is on the weighing pan, the balance judges that it is in use and does not perform automatic self calibration. To maintain the calibrated state, keep the weighing pan clear while not in use.

The displays shown below are related to the automatic self calibration.

Indicates that the balance detects a change in ambient temperature and automatic self calibration will start. If the balance is not used for a few minutes with this indicator blinking, the balance performs automatic self calibration. The blinking duration depends on the environment.

Indicates that the balance is measuring calibration data. Do not allow vibration or drafts to affect the balance while this indicator is displayed. After calibration, the balance returns to indicate the previous display.

Note

The balance can be used while the indicator blinks. But, it is recommended that to maintain the accuracy, stop using the balance and confirm that there is nothing on the pan and allow the balance to perform self calibration.

8-3 Calibration Using the Internal mass (One-Touch Calibration)

This function calibrates the balance using the internal mass. The only operation required is to press

the CAL key

Operation

1 Connect the AC adapter and warm up the balance for at least 30 minutes with nothing on the

weighing pan.

2 Press the CAL key.

3 The balance displays Calin and performs calibration using the internal mass. Do not allow

vibration or drafts to affect the balance.

4 The balance displays end after calibration. If the “GLP output (info)” parameter of the

function table is set to “1” or “2”, the balance displays glp and outputs “Calibration Report” using the RS-232C interface or stores the data in memory. For details on the calibration report format, refer to “11-2 GLP Report”.

5 The balance will automatically return to the weighing mode after calibration.

About the internal mass

The mass of the internal mass (approximately 500 g) may change due to corrosion or other damage caused by the operating environment, or due to aging. Check the internal mass periodically. Correct the internal mass value as necessary. For details, refer to “8-6 Correcting the internal mass value”.

To maintain the weighing accuracy, perform the calibration using an external weight periodically, as described below.

8-4 Calibration Using an External Weight

This 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 Calout is

displayed, then release the key.

Press and hold the key

3 The balance displays Cal 0 .

 If you want to change the calibration weight (a

list of usable weights is shown on page 24), press the SAMPLE key and proceed to step 4.

 If you use the calibration weight value stored in

the balance, proceed to step 5.

4 Specify the calibration weight value as follows:

SAMPLE key To switch the display

condition to: “All of the segments blinking” (calibration weight selection mode) or “The last two 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.

Release the key

Select a weight

To n e xt p ag e

e.g. Calibration weight value

1000.12 g

PRINT key To store the new weight

value. Even if the AC adapter is removed, the data is maintained in non-volatile memory.

CAL key To cancel the operation and

return to 1Cal 0 .

Note

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

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 the balance.

The balance displays the calibration weight value.

6 Place the displayed calibration weight on the pan

and press the PRINT key. The balance measures the calibration weight. Do not allow vibration or drafts to affect the balance.

7 The balance displays end . Remove the weight

from the pan.

From previous page

Calibration weight

8 If the “GLP output (info)” parameter, of the

function table, is set to “1” or “2”, the balance displays glp and outputs “Calibration Report” using the RS-232C interface or stores the data in memory. For details on the calibration report format, refer to “11-2 GLP Report”.

9 The balance will automatically return to the

weighing mode.

10 Place the calibration weight on the pan and confirm

that the value displayed is within ±2 digits of the specified value. If it is not within the range, check the ambient conditions such as breeze and vibration, also check the weighing pan. Then, repeat steps 1 to 10.

GLP output

8-5 Calibration Test Using an External Weight

This 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 CCout is

displayed, then release the key.

Press and hold the key

3 The balance displays CC 0 .

 If you want to change the target weight (a list of

usable weights is shown on page 24), press the

SAMPLE key and proceed to step 4.

 If you use the target weight value stored in the

balance, proceed to step 5.

4 Specify the target weight value as follows:

SAMPLE key To switch the display

condition to: “All of the segments blinking” (target weight selection mode) or “The last two digits blinking” (value adjustment mode).

RE-ZERO key To select the target weight or

adjust the value. In the value adjustment mode, -15 digits appear after +15 digits.

PRINT key To store the new weight

value. Even if the AC adapter is removed, the data is maintained in non-volatile memory.

Release the key

Select a weight

e.g. Target weight value

1000.12 g

To next page

CAL key To cancel the operation and

return to 1CC 0 .

Note

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

5 Confirm that there is nothing on the pan and press the

PRINT key. The balance measures the zero point and displays the measured value. Do not allow vibration or drafts to affect the balance.

The balance displays the target weight value.

From previous page

6 Place the displayed target weight on the pan and press

the PRINT key. The balance measures the target weight and displays the measured value. Do not allow vibration or drafts to affect the balance.

7 The balance displays end . Remove the weight from the

pan.

8 The balance displays glp and outputs “Calibration

Test Report” using the RS-232C interface or stores the calibration test data in memory. For details on the calibration test report format, refer to “11-2 GLP Report”.

9 The balance will automatically return to the weighing

mode.

Tar g et w ei g ht

GLP output

8-6 Correcting the Internal Mass Value

The GX series balance can correct the internal mass value within the range shown below. This function corrects the internal mass value to conform to an external weight. The corrected mass value is maintained in non-volatile memory even if the AC adapter is removed.

The internal mass value is corrected as follows:

Model Correction reference value Correction range

GX-200 GX-300 GX-400 400.000 g GX-600 GX-800

GX1000 GX-2000 GX-3000 GX-4000 GX-6100 GX-6000 GX-8000

200.000 g

-0.020 g to +0.020 g

500.000 g

2000.00 g -0.20 g to +0.20 g

2000.0 g -2.0 g to +2.0 g

Example: Using the GX-400

200 g

Use the same weight

Correct the internal mass by +0.012 g in 400.000 g. Calibrate the balance with the corrected internal mass.

Operation

1 Calibrate the balance using the internal mass (one-touch

calibration). Then, place an external weight and confirm the value to be corrected.

In the example, the value is off by -0.006 gram and the

correction reference value of the GX-400 is 400 grams. So, the value is to be corrected by 0.012 gram in 400.000 grams.

2 Press the ON:OFF key to turn off the display.

3 While pressing and holding the PRINT key and the

SAMPLE key, press the ON:OFF key. The balance displays p5 .

200 g

With these keys held down

Press the key

4 Press the PRINT key. Then the balance displays the

function switches.

Set the function table switch and internal mass correction

switch to “1” as shown above using the following keys.

SAMPLE key To select the switch to change the value. RE-ZERO key To change the parameter of the switch

selected.

5 Press the PRINT key to store the new setting. The

balance returns to the weighing mode.

6 Press and hold the SAMPLE key to enter the function

table and release the key when ba5fnc is displayed.

Press and hold

7 Press the SAMPLE key several times until C5in is

displayed.

8 Press the PRINT key to enter the procedure for correcting

the internal mass value.

9 Correct the internal mass value using the following keys.

RE-ZERO key To select the value. (-20 digits appear after +20 digits.) PRINT key To store the new value and display the

next menu of the function table.

CAL key To cancel the correction and display

10 Press the CAL key. The balance returns to the weighing mode.

11 Press the CAL key to calibrate the balance using the

internal mass.

the next menu of the function table.

12 Place the external weight on the pan and confirm that the correction has been performed

properly. In this example, confirm that the value displayed is within ±2 digits of 200.000 grams, or within ±0.002 gram.

If the internal mass value has not been corrected properly, repeat the procedure, starting at

step 6 and adjust the correction value.

9. FUNCTION SWITCH AND INITIALIZATION

9-1 Permit or Inhibit

The balance stores parameters that must not be changed carelessly (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 can select either “permit” or “inhibit”. “Inhibit” protects parameters against careless 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 the weighing mode, press CAL key once again.

9-2 Initializing the Balance

This 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 mode

Note

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 balance displays 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.

With these keys held down

Press the key

6 Press the PRINT key to initialize the balance.

The balance will automatically return to the weighing

mode.

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.

Example

This 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 next

class. When a class is displayed, exits the function table mode and returns to the weighing mode.

10-3 Details of the Function Table

Class Item

ba5fnc

Environment

Display

Cl adj

Clock

Cp fnc

Comparator

Cp Hi

Upper limit

Cp lo

Lower limit

Cp ref

Reference value

Cp lmt

Tolerance

Cond

Condition

5t-b

Stability band width

Hold

Hold function

trc

Zero tracking

5pd

Display refresh rate

pnt

Decimal point

p-on

Auto display-ON

poff

Auto display-OFF

g5i

Capacity indicator

Comparator mode

Cp in

Input method

Factory setting

Parameter

Fast response, sensitive value

0 1

Slow response, stable value

Stable when within 1 digit

0 1

Stable when within 3 digits

OFF

0 1

OFF

Normal

Strong

Very strong

5 times/second

10 times/second

Point (.)

Comma (,)

OFF

ON (10 minutes)

OFF

See "10-9 Clock and Calendar Function"

No comparison

Comparison, excluding "near zero"

when stable value or overloaded

Comparison, including "near zero"

when stable value or overloaded

Continuous comparison,

excluding "near zero"

Continuous comparison,

including "near zero"

Digital input, upper/lower limits

Weighing input, upper/lower

limits

Digital input, reference value

Weighing input, reference value

See "10-10 Comparator Function"

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

Description

FAS T

Can be changed by response adjustment.

MID.

With "

SLOW

averaging time.

The stabilization indicator illuminates with the display fluctuation within the range. With "

stabilization range. Holds the display when

stable in animal mode. With "

Keeps zero display by tracking zero drift.

Period to refresh the display

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:

Maximum capacity: Confirms and sets the time and date.The time and date are added to output data

Cp Hi,Cp lo

selected.

Cp ref,Cp l t

selected.

Displayed when

Hold 1

", ANIMAL turns on.

Hold 1

Cpin 1

Cpin 3

", sets the

100

can be

Cpin 0

is selected.

Cpin 2

is selected.

Class Item

dout

Data output

prt

Data output mode

ap-p

Auto print polarity

ap-b

Auto print difference

data

Data memory

int

Interval time

d-no

Data number output

5-td

Time/Date output

5-id

ID number output

pU5e

Data output pause

at-f

Auto feed

info

GLP output

ar-d

Zero after output

Parameter

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

Description

Key mode

Auto print mode A

(Reference = zero)

Auto print mode B

(Reference = last stable value)

Stream mode /

Interval memory mode

Plus only

Minus only

Both

10 digits

100 digits

1000 digits

Not used

Stores unit mass in counting mode

Stores weighing data

Stores calibration data

Every measurement

Every 2 seconds

Every 5 seconds

Every 10 seconds

Every 30 seconds

Every 1 minute

Every 2 minutes

Every 5 minutes

Every 10 minutes

No output

Output

No output

Time only

Date only

Time and date

No output

Output

No pause

Pause (1.6 seconds)

Not used

Used

No output

AD-8121 format

General data format

Not used

Used

Accepts the PRINT key only

when the display is stable.

Outputs data when the

dispaly is stable and

conditions of

and the reference value are

met.

With

data 0

continuously; with

uses interval memory.

Displayed value>Reference

Displayed value<Reference

Regardless of displayed value

Difference between

reference value and

displayed value

Related items:

d-no, 5-td, info

Interval time in the interval

memory mode

(with

prt 3, data 2

See "12. DATA MEMORY".

Selects whether or not the time or date is added to the weighing data. For details, see "10-9 Clock and Calendar Function".

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. For how to set time and date to be added, see "10-9 Clock and Calendar Function".

Adjusts zero automatically

after data is output.

ap-p, ap-b

, outputs data

data 2

prt, int,

)

Factory setting

Class Item

5if

Serial interface

bp5

Baud rate

btpr

Data bit, parity bit

Crlf

Ter mi na to r

type

Data format

t-Up

Timeout

erCd

AK, Error code

Ct5

CTS, RTS control

d5 fnc

Density function

ldin

Liquid density input

mlt

Programmable-unit (Multi-unit)

Unit

aram-

eter

*600 bps

1200 bps

2400 bps

4800 bps

9600 bps

7 bits, even

7 bits, odd

8 bits, none

CR LF

A&D standard format

DP format

KF format

MT format

NU format

CSV format

No limit

1 second

No output

Output

Not used

Used

Water temperature

Liquid density

Sets an arbitrary coefficient. See "14. PROGRAMMABLE-UNIT".

See "5. WEIGHING UNITS".

Description

CR: ASCII code 0Dh

LF: ASCII code 0Ah

See "10-6 Description of

Item "Data Format".

Selects the wait time to

receive a command.

AK: ASCII code 06h

Controls CTS and RTS.

Available only when

density mode is selected.

See "15. DENSITY

MEASUREMENT".

Available only when programmable-unit mode is selected.

C5 in

Internal mass value correction

ID number setting

See "8. CALIBRATION".

See "11. ID NUMBER AND GLP REPORT".

Factory setting

Displayed only when the internal mass value correction switch is set to 1.

Caution

The 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.

10-4 Description of the Class “Environment, Display”

Condition ( Cond )

Cond 0 This parameter is for sensitive response to the fluctuation of a weight value.

Used for powder target weighing, weighing a very light sample or when quick response weighing is required.

After setting, the balance displays FAST.

Cond 2 This parameter is for stable weighing with slow response. Used to prevent a

weight value from drifting due to vibration or drafts.

After setting, the balance displays SLOW.

Notes

In automatic response adjustment, the response rate is selected

automatically.

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 per second is less than the parameter, the balance displays the stabilization indicator and outputs or stores the data. The parameter influences the “Auto print mode”

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

for exact weighing.

5t-b 2 This parameter ignores slight fluctuation of a weight value. Used to prevent

a weight value from drifting due to vibration or drafts.

Note

With “Hold function (Hold)” set to “ON (1)”, this item is used to set the stabilization 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 the stabilization range for a fixed period of averaging time, the processing indicator illuminates and the balance displays the average weight of the animal. When the animal is removed from the weighing pan, the display returns to zero automatically. This function is available only when the hold function parameter is set to “1” (the animal mode indicator ANIMAL illuminates) and any weighing unit other than the counting mode is selected.

Weighing range GX-200/300/400/600/800/1000 0. 200 g or over GX2000/3000/4000/6100 2.00 g or over GX-6000/8000 10.0 g or over

The averaging time and stabilization range are set in “Condition (Cond)” and “Stability band width (5t-b)”.

Averaging time Stabilization range

Cond 0 5t-b 0 About ±6% of the weight value Cond 1 5t-b 1 About ±12% of the weight value Cond 2

2 seconds Faster 4 seconds | 8 seconds More accurate

Note The Animal Weighing Bowl Kit (GX-12) is available as an option for all models except GX-200.

5t-b 2 About ±25% of the weight value

Zero tracking ( trc )

This function tracks zero point drift caused by changes in the environment and stabilizes the zero point. When zero has difficulty stabilizing, select a greater value. When the weighing data is only a few digits, turn the function off for accurate weighing.

trc 0 The tracking function is not used. Used for weighing a very light sample.

trc 1 The tracking function is used. Normal zero tracking. trc 2 The tracking function is used. Strong zero tracking. trc 3 The tracking function is used. Very strong zero tracking.

Note

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

Display refresh rate ( 5pd )

Period to refresh the display. This parameter influences “Baud rate”, “Data output pause” and “Stream mode”.

Note

This item is selected automatically in the automatic 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 in percentage. (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.

10-5 Description of the Item “Data output mode”

The parameter setting of the “Data output mode ( prt )” applies to the performance when the “Data memory ( data )” parameter is set to “2” (to store the weighing data)and when the data is transmitted using the RS-232C interface.

Key mode

When the PRINT key is pressed with the stabilization indictor turned on, the balance outputs or stores 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 or stores the data and the display blinks one time. ,

Mode A: Required setting dout prt 1 Auto print mode A (reference = zero)

dout ap-p Auto print polarity dout ap-b Auto print difference

Example “For weighing each time a sample is placed and removed.”

Mode B:Required setting dout prt 2 Auto print mode B (reference = last stable value)

dout ap-p Auto print polarity dout ap-b Auto print difference

Example “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 when the “Data memory ( data )” parameter is set to “2” (to store the weighing data).

Required setting dout prt 3 Stream mode dout data 0 Data memory function is not used. ba5fnc 5pd Display refresh rate 5if bp5 Baud rate

Example “For monitoring data on a computer”

Caution

The 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.

Interval memory mode

The weighing data is periodically stored in memory.

Required setting dout prt 3 Interval memory mode dout data 2 Data memory function is used. Stores weighing data. dout int Interval time Optional setting dout 5-td1, 2, or 3 Adds the time and date.

Example “For periodical weighing without a computer command and

outputting all of the data to a computer at one time”

10-6 Description of the Item “Data format”

A&D standard format 5if type 0

This format is used when the peripheral equipment can receive the A&D format. If an AD-8121B is used, 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.

ST,+00012.7888g

DataHeader

Unit

Ter mi na to r

DP (Dump print) format 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.

KF format 5if type 2

This is the Karl-Fischer moisture meter format and is used when the peripheral equipment can only communicate using this format.

z This format consists of fourteen characters excluding the terminator. z This format has no header characters. z The polarity sign is placed befor e the data, with spaces in place of leading zeros, if the data is

not zero or overloaded.

z This format outputs the unit only for a stable value.

+ 12.78 g

Data

Unit

CRL

Terminator

MT format 5if type 3

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

S 12.78 g

Header

Unit

CRL

TerminatorData

NU (Numerical) format 5if type 4

This format outputs only numerical data.

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

sign is used.

CSV format 5if type 5

z Separates the data of A&D standard format and the unit by a comma (,). z Outputs the unit even when the data is overloaded. z When the ID number, data number, time and date are added, outputs the ID number, data

number, date, time and weighing 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, data number, time and date, 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 (

Note

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

. ) is replaced with a comma ( , ).

Time dout 5-td 1 or 3

 Outputs time in 24-hour format.

Date dout 5-td 2 or 3

 The date output order can be changed in “Clock (Cl adj)”. Outputs the year in four-digit

format.

ID number dout 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 the following order: ID number, Data number, Date, Time and Weighing data.

10-8 Data Format Examples

Stable

A&D DP

MT NU

ST,+00001. 72 W

T + S

000 01 . 72

1. 72

1. 72g

CRL

F F

Unstable

A&D

DP KF

MT NU

US, - 00183 . 96g

-00183. 96

183. 96

-183. 96g

183. 96

CRL

FCR

CRL

Overload

Positive error

A&D

DP KF

MT NU

OL , + 9 99 9 9 9 E 1

SI+

+999 99999

CRL

+99

Overload

Negative error

A&D

DP KF

MT NU

OL , - 9 9 9 99 9 E 1+99

SI -

-99999999

CRL

LFC

Space, ASCII 20h

Carriage Return, ASCII 0Dh

Line Feed, ASCII 0Ah

Units

Counting mode

Precent mode

A&D

D.P.

KF MT

Ounce (Avoir)

Pound

Pound Ounce

Troy Ounce

Metric Carat

Momme

Pennyweight

Grain

(HK general,

Ta e l

Singapore)

Ta e l ( H K , j e w e l r y )

Tael (Taiwan)

Tael (China)

To l a ( I n d i a )

Messghal

Density

Multi

(Blank)

zzo

to z

mmo

sme

toz

mmo

sme

toz toz

tc tc

mmo mo

Space, ASCII 20h

Note

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

10-9 Clock and Calendar Function

The balance is equipped with a clock and calendar function. When the “GLP output (info)” parameter is set to “1” or “2” and the “Time/Date output (5-td)” parameter is set to “1”, “2” or “3”, the time and date are added to the output data. Set or confirm the time and date as follows:

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

Cl adj .

3 Press the PRINT key. The balance enters the mode to

confirm or set the time and date.

Confirming the time

4 The current time is displayed with all the digits

blinking.

 When the time is correct and the date does not

need to be confirmed, press the CAL key and proceed to step 8.

 When the time is correct and the date is to be

confirmed, press the SAMPLE key and proceed to step 6.

 When the time is not correct and is to be changed,

press the RE-ZERO key and proceed to step 5.

Setting the time (with part of the digits blinking)

5 Set the time in 24-hour format using the following

keys.

SAMPLE key To select the digits to change

the value. The selected digits

blink. RE-ZERO key To increase the value by one. MODE key To decrease the value by one. PRINT key To store the new setting,

display end and go to step

CAL key To cancel the new setting and

go to step 6.

Confirming the date

6 The current date is displayed with all the digits

blinking.  To change the display order of year (y), month (n)

and day (d), press the MODE key. The date is output in the order as specified.

 When the date is correct and the operation is to be

finished, press the CAL key and proceed to step 8.

 When the time is to be confirmed again, press the

SAMPLE key and go back to step 4.

 When the date is not correct and is to be changed,

press the RE-ZERO key and proceed to step 7.

Note

The year is expressed using a two-digit format. For example, the year 2000 is expressed as “00”.

Setting the date (with part of the digits blinking)

7 Set the date using the following keys.

SAMPLE key To select the digits to change

the value. The selected digits blink.

RE-ZERO key To increase the value by one.

MODE key To decrease the value by one.

PRINT key To store the new setting,

display end and go to step

CAL key To cancel the new setting and

go to step 8.

Quitting the operation

8 The balance displays the next menu of the function

table. Press the CAL key to exit the clock and calendar function and return to the weighing mode.

Notes

Do not enter invalid values such as a non-existing date when setting the time and date. When the clock backup battery has been depleted, the balance displays rtc pf .

Under this condition, press any key and set the time and date. The dead battery only affects the clock and calendar function. Even so, the function works normally as long as the AC adapter is connected to the balance.

10-10 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”

To compare, use:  Upper limit value and lower limit value

 Reference value and tolerance value

Input method:  Digital input

 Weighing input

Note "Near zero" means within ±10 digits of the minimum weighing value. For example, using a GX-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 ref displayed, press the PRINT key. The current setting is displayed with all the

digits blinking.

 When the current setting is not to be changed, press the PRINT or CAL key to proceed to step 9.

 When the current setting is to be changed, press the RE-ZERO key. Change the setting

using the following keys.

SAMPLE key To select the digit to change the value. RE-ZERO key To change the value of the digit selected. MODE key To switch the polarity. PRINT key To store the new setting and go to step 9. CAL key To cancel the new setting and go to step 9.

9 With Cp lnt displayed, press the PRINT key. The current setting is displayed. When the

current setting is to be changed, change the setting using the following keys. Enter the tolerance value in percentage to the reference value as 100%.

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.

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 and

lower 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 With Cp Hi displayed, press the PRINT key. The current setting is displayed with all of the

digits blinking. Press the RE-ZERO key to enter the weighing input mode.

9 Press the RE-ZERO key. The balance displays 0.00 g. Place a sample whose mass

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 the

digits blinking. Press the RE-ZERO key to enter the weighing input mode.

11 Press the RE-ZERO key. The balance displays 0.00 g. Place a sample whose mass

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 for

comparison.

In the density mode, comparison is performed to the density obtained.

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,

date, time and space for signature for weighing data, and the weight used and results for calibration or calibration test data.

 The balance can output the following reports for GLP.

“Calibration report” of the calibration, using the internal mass (Calibration due to changes in

temperature and one-touch calibration.)

“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.

 Calibration and calibration test data can be stored in memory to output several reports at the

same time. Refer to “12. DATA MEMORY” for details.

 For details on confirming and setting the time and date, refer to “10-9 Clock and Calendar

Function”.

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 character

set 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

0123456789

ABCDEFGH

Space

JKLM

NOPQRSTUVWXYZ

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”.

 To output the report to a personal computer using the RS-232C interface, set the “GLP output

( info )” parameter to “2”.

 If the time and date are not correct, set the correct time and date in “Clock ( Cl adj )” of the

function table.

Note

For operational details about calibration and calibration test, refer to “8. CALIBRATION”.

Calibration report using the internal mass

When the setting is “info 1”: When the setting is “info 2”:

Calibration report using an external weight

When the setting is “info 1”: When the setting is “info 2”:

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”:

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.

Caution

If 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 is displayed.

The “Title block” is output.

2 The weighing data is output according to the parameter setting of the data output mode.

3 Press and hold the PRINT key until recend is displayed. The “End block” is output.

When the setting is “info 1”: When the setting is “info 2”:

12. DATA MEMORY

Data memory is a function to store weighing data, calibration data and unit mass in memory. Of the data in memory, the balance can only display the weighing data. The weighing data and calibration data in memory are 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 200 sets. 100 sets when the time and date are added.)

 Calibration and calibration test data (latest 50 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. In addition, for weighing data, set the “Time/Date output (5-td)” parameter. For details on setting the data memory, refer to “10. FUNCTION TABLE”.

For weighing data, the data contents to be stored and the storage capacity depend on the “Time/Date output (5-td)” parameter setting.

Releasing “Clr”

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

Under such a condition, before storing data, delete the data in memory as follows:

1 Press and hold the PRINT key until SClr no with “no” blinking is displayed.

2 Press the RE-ZERO key to display SClr go with “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 PC Weighing data without time and date -d- Weighing data with time and date d-t Calibration or calibration test data Hi5

3 Press the PRINT key to delete all the data in memory.

4 The balance displays end and returns to the weighing mode.

12-2 Memory for Weighing Data

 The data memory function can store 200 sets of weighing data (100 set if time and date are

added). Even if the AC adapter is removed, 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, data number, time and date) 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 Set the “Time/Date output (5-td)” parameter as necessary.

3 The storing operation depends on the “Data output mode ( prt )” parameter setting. Four

types of operating modes are available to store data.

Key mode When the PRINT key is pressed and the displayed value is

stable, the balance stores the weighing data.

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 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.

 Automatic self calibration can not be used while the interval memory mode is active.

 The following commands can not be used during data storage.

Q Query command for weighing data.

S Query command for stable weighing data.

SI Query command for weighing data.

SIR Query command for continuous weighing data.

Setting the function table

Parameter settings for each output mode are as follows:

Item

Mode Key mode prt 0 Not used Data 2 Auto print mode A prt 1 Data 2 Auto print mode B prt 2 Interval memory mode prt 3 Not used Data 2 int 0-8

Set each item, depending on the situation, as follows:

No d-no 0 No 5-td 0 Data number Yes d-no 1 Time only 5-td 1 No 5-id 0 Date only 5-td 2 ID number Yes 5-id 1

With 5-td 1, 5-td 2 or 5-td 3 selected, the amount of data to be stored is 100 sets.

Data output mode

Time and date

Auto print polarity, difference

ap-a 0-2 ap-b 0-2

Data memory function

Data 2

Both 5-td 3

Interval time

Not used

Enabling the data memory function

1 Press and hold the SAMPLE key until ba5fnc of the function table is displayed.

2 Press the SAMPLE key several times to display dout .

3 Press the PRINT key.

4 Press the SAMPLE key three times to display data 0 .

5 Press the RE-ZERO key to change data 0 to data 2 .

6 Press the PRINT key to save.

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

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 the following 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 display out .

3 Press the PRINT key to display Sout no with “no” blinking.

5 Press the RE-ZERO key to display out go with “go” blinking.

6 Press the PRINT key to transmit all data using the RS-232C interface.

7 The balance displays Clear when all data is transmitted. Press the CAL key to return to the

weighing mode.

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 Clear .

3 Press the PRINT key to display SClr no with “no” blinking.

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

5 Press the PRINT key to delete all data

6 The balance displays end , then reCall when all data is deleted.

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

12-3 Memory for Calibration and Calibration Test Data

 Calibration data (when and how it is performed) and calibration test data can be stored in

memory.

 All the data in memory is available to be output at one time to a printer or personal computer.

 Up to 50 data sets of the latest calibration or calibration test can be stored. When the memory

capacity has been reached, “fUl” illuminates.

Storing the calibration and calibration test data

Note

If “Clr” appears blinking in the upper left of the display, delete the data in memory.

Store the calibration and calibration test data as follows:

1 Set the “Data memory ( data )” parameter to “3”.

2 Set the “GLP output (info)” parameter to “1” or “2”.

3 With the settings above, each time calibration or calibration test is performed, the data is

stored automatically.

Transmitting the memory data

Confirm that the “Serial interface ( 5if )” parameters are set properly. For details, refer to “10. FUNCTION TABLE” and “17. CONNECTION TO PERIPHERAL EQUIPMENT” and also confirm that the “Data memory ( data )” parameter is set to “3”.

1 Press and hold the PRINT key until out is displayed.

2 Press the PRINT key to display Sout no with “no” blinking.

3 Press the RE-ZERO key to display out go with “go” blinking.

4 Press the PRINT key to transmit all memory data using the RS-232C interface.

5 The balance displays Clear when all memory data is output. Press the CAL key to return

to the weighing mode.

Deleting the memory data

1 Press and hold the PRINT key until out is displayed.

2 Press the SAMPLE key to display Clear .

3 Press the PRINT key to display SClr no with “no” blinking.

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

5 Press the PRINT key to delete all data

6 The balance displays out when all the data has been deleted. Press the CAL key to return

to the weighing mode.

12-4 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 the

AC 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 To increase the unit mass number by one. MODE key To decrease the unit mass by one. PRINT key To select the unit mass number to be used. CAL key 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)”.

Note

ACAI can not be performed on the recalled unit mass.

13. UNDERHOOK

The 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.

14. PROGRAMMABLE-UNIT

This is a programmable unit conversion function. It multiplies the weighing data in grams by an arbitrary 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 the coefficient set is beyond the range, an error is displayed and the balance returns to the coefficient setting mode, prompting to enter an appropriate value. A coefficient of 1 was set at the factory.

Model Minimum coefficient Maximum coefficient GX-200/300/400/600/800/1000 1000 GX-2000/3000/4000/6100 100 GX-6000/8000

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 mlt .

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

0.000001 10

5 Set the coefficient using the following keys.

SAMPLE key To select a digit to change the

value. The selected digit blinks. RE-ZERO key To change the value. MODE key To change the decimal point

position.

Each time the switch is pressed,

the decimal point position

changes as follows:

PRINT key To store the new setting, display

end and go to step 6. CAL key 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 and

return 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 balance displays the result (weighing data in grams x coefficient).

15. DENSITY MEASUREMENT

The GX series balance is equipped with a density mode. It calculates the density of a solid using the weight 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 GX-200/300/400/600/800/1000.

Formula to obtain the density

The density can be obtained by the following formula.

Where A: Density of a sample A: Weight value of a sample in air B: Weight value of a sample in liquid B: 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 the function 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 is available only when the density mode is selected.

Class Item Parameter Description

ld in

Density function

0 = Factory setting

Liquid density input

0 Water temperature d5 fnc 1 Liquid density

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 automatic response adjustment. This function is 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 end and return to the density mode.

CAL key To cancel the change 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 end and return to the density mode.

CAL key To cancel the change 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 is displayed with three decimal places.

Measuring procedure

1 Confirm that the balance is in the mode to measure the

weight of the sample in air. (“g” displayed and processing indicator blinking)

2 Confirm that the balance indicates zero. If it does not

indicate zero, press the RE-ZERO to reset the displayed value to zero.

3 Place the sample on the upper pan (in air). When the

value displayed on the balance becomes stable, press the SAMPLE key to confirm the value (the weight of the sample in air). The balance enters the mode to measure the weight of the sample in liquid (“g” displayed and processing indicator illuminating).

Note

If a negative value or E (error) is displayed, the SAMPLE key is disabled.

" " blinks.

4 Remove the sample from the upper pan and place it on

" "

the lower pan (in liquid). When the value displayed on the

balance becomes stable, press the SAMPLE key to

confirm the value (the weight of the sample in liquid). The

balance enters the mode to display the density (“g”

disappears).

illuminates.

Density mode

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 the mode to measure the weight in air and repeat the procedure described above.

Note

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

" " illuminates.

16. RS-232C SERIAL INTERFACE / EXTERNAL INPUT

RS-232C

The balance is a DCE device. Connect the balance to a personal computer (DTE), using a straight

through cable or a modem cable.

Transmission system : EIA RS-232C Transmission form : Asynchronous, bi-directional, half duplex Data format : 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 bit Code : ASCII

Pin connections

Pin No. Signal name Direction Description

1 FG - Frame ground 2 RXD Input Receive data 3 TXD Output Transmit data 4 RTS Input Ready to send 5 CTS Output Clear to send 6 DSR Output Data set ready

7 SG - Signal ground 18 PRINT Input Same as the PRINT key 19 RE-ZERO Input Same as the RE-ZERO key

8 – 25 (Excluding 18 and

19)

Note

The signal names for the RS-232C are the same as those for the DTE side except TXD and

RXD.

- - Not connected

Circuits

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 m seconds.

Use of example

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

17. CONNECTION TO PERIPHERAL EQUIPMENT

17-1 Connection to the AD-8121B Printer

Set the following parameters to use the AD-8121B printer.

Function setting Description

dout prt 0-3 Selects a print mode. dout ap-p 0-2 Selects the polarity for the auto print mode. dout ap-b 0-2 Selects the auto print difference. dout pU5e 0,1 Selects data output pause. 5if bp5 2 Factory setting 2400 bps 5if btpr 0 Factory setting 7 bits, Even parity check 5if Crlf 0 Factory setting CR, LF 5if Ct5 0 Factory setting CTS and RTS control, not used

When “MODE 1” or “MODE 2” of the AD-8121B printer is used

dout 5-td 0 Factory setting Not to output the time and date. dout 5-id 0 Factory setting Not to output the ID number. dout at-f 0 Factory setting Not to use auto feed. 5if type 0 Factory setting A&D standard format

When “MODE 3” of the AD-8121B printer is used.

dout 5-td 0-3 Outputs the time and date as necessary. dout 5-id 0,1 Outputs the ID number as necessary. dout at-f 0,1 Uses auto feed as necessary. 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.

Setting What is printed

data 0 The weighing data data 2 The weighing data stored in memory data 3 The calibration or calibration test data stored in memory

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

17-2 Connection to a Computer

The GX series balance is of the DCE type (Data Communication Equipment), which can be

connected 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).

17-3 Using Windows Communication Tools (WinCT)

When Windows is used as an operating system in a personal computer, the provided WinCT can be used to transmit the weighing data to the personal computer. The WinCT has two communication methods: “RsCom” and “RsKey”. For details on WinCT, refer to 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 a 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 printer



connected to the personal computer.

 When several ports of a personal computer have balances connected, the personal computer

can 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, 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 the

data 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 “send

weighing data” to the balance and controls the balance.

3 Printing the balance GLP report using your printer The 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.

5 Using the GX 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 weight

indicator for the balance. (To do this, set the balance data output mode to stream mode.)

18. COMMANDS

18-1 Command List

Commands to query weighing data

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

P Requests the weighing data when stabilized.

Note: The “Q” and “SI” commands, the “S” and “

Commands to control the balance

CAL Same as the CAL key. MCL Deletes all data in memory. MD:nnn Deletes weighing data with the data number nnn. OFF Turns the display off. ON Turns the display on. P Same as the ON:OFF key PT:∗∗∗. ∗∗ g 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 that the total value of the sample and the tare does not exceed the weighing capacity. Negative values can not be used.

?PT Requests the tare value.

Outputs the tare value set by the TR or PT: command.

PRT Same as the PRINT key R Same as the RE-ZERO key SMP Same as the SAMPLE key. U Same as the MODE key T Same as the RE-ZERO key TR Tares the balance (Cancels the container’s weight.)

Available only when the load on the weighing pan is greater than the zero point. The zero point is set by the R, T or Z command, by pressing the RE-ZERO key, or using the external input.

Z Same as the RE-ZERO key

T Same as the RE-ZERO key

Note: The “R”, “T”, “Z” and “

T” commands behave the same.

P” commands behave the same.

Commands to control the memory function

?MA Outputs all data in memory. ?MQnnn Outputs weighing data with the data number nnn. ?MX Outputs the number of weighing data in memory. MCL Deletes all data in memory. MD:nnn Deletes weighing data with the data number nnn. UN:mm Changes the unit mass stored in memory with the number of mm (01-20). ?UN Outputs the unit mass number of the selected unit mass. UW:∗∗∗. ∗∗ g Sets the unit mass value. e.g.,UW:+0.123 g (to set the unit mass to

0.123 g: represents a space.)

?UW Outputs the unit mass value of the selected unit mass number. ?ID Requests the ID number. ?SN Requests the serial number. ?TN Requests the model name.

Commands to control the comparator function

HI:∗∗∗. ∗∗ g Sets the upper limit value. e.g.,HI:+2.34 g (to set the upper limit

value to 2.34 g: represents a space.)

LO:∗∗∗. ∗∗ g Sets the lower limit value. e.g.,LO:+1.23 g (to set the lower limit

value to 1.23 g: represents a space.)

?HI Outputs the upper limit value. ?LO Outputs the lower limit value.

Notes

“nnn” and “mm” indicate, respectively, three-digit and two-digit numerical values.

: 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 the command.

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 error code to 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 balance

transmits 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, the

balance transmits an error code (EC, Exx).

When the balance receives a command to control the balance and can process it, the balance

transmits 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 the command again.

Among commands to control the balance, the following transmit the acknowledge code both

when the balance receives the command and when the balance has accomplished the command. 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)

18-3 Command Examples

ON command

Personal computer Time Balance

ON command

CRL

All segments

R command

Personal computer Time Balance

R command

CRL

Standby mode

Command received

All segments are displayed

Command completed

Zero display

Weighing mode

Command received

In process

CRL

Command completed

Zero display

CAL command

Personal computer Time Balance

CAL command

AC L

CRL

Error code

Personal computer Time Balance

R command

CRL

CAL command

AC L

CRL

Zero display

Command received

Command completed

Zero display

Weighing mode (unstable)

Command received

In process

When the R command can not be achieved due to unstable weighing:

Error code

1E,CE

When the CAL command is received, the balance returns to the weighing mode

Command completed

Weighing mode

Weighing with a tare

Personal computer Time Balance

R command

TR command

CRL

Sets the display to zero

Command received

In process

Command completed

Zero display

Place a container

Tar es

Command received

In process

Command completed

Zero display

S command

?PT command

P? T

CRL

ＳＴ，＋００１００．００　　ｇ

(Net value)

CRL

ＰＴ，＋００１２６．８７　　ｇ

(Tare value)

Setting a negative target value and filling with a sample until the display becomes zero

R command

PT:

command to set a target weight of 100 g

Personal computer Time Balance

CRL

g00001:TP .

CRL

Place a container

Before command execution

Command received

In process

Command completed

Zero display

Command received

Tar ge t w ei gh t d is pl ay

Fill with sample until the display 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 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.

19. MAINTENANCE

 Do not use organic solvents to clean the balance. Clean the balance with a lint free cloth that

is moistened with warm water and a mild detergent.

 The mass of the internal mass may change due to corrosion or other damage caused by the

operating environment, or due to aging. Check the internal mass using an external weight periodically.

 Do not disassemble the balance. Contact the local A&D dealer if the balance needs service or

repair.

 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 is

inadequate, correct weighing can not be performed. Place a sample on the pan and remove it, and

repeat 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 “7-1 Automatic

Response Adjustment / 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 the

center of the weighing pan.

 Check the balance repeatability, linearity and calibrated value using external weights with a

known value.

Checking that the operating environment or weighing method is proper

Operating environment

 Is the weighing table solid enough (especially for GX-200/300/400/600/800/1000, the balance

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

GX-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?

 Is the sample placed in the center of the weighing pan?

 Has the balance been calibrated using the internal mass (one-touch calibration)?

 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 temperature

and 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 GX-200/300/400/600/800/1000 is prone to be charged with static electricity when the

relative 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 Description

EC, E11 Stability error

The balance can not stabilize due to an environmental problem. Prevent vibration, drafts, temperature changes, static electricity and magnetic fields.

Refer to “3. PRECAUTIONS” for details on the operating environment and “7. RESPONSE ADJUSTMENT” about adapting the balance to the environment.

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, E16 Internal mass error

Applying the internal mass does not yield a change in the weighing value as specified.

Confirm that there is nothing on the pan and perform the weighing operation from the beginning again.

EC, E17 Internal mass error

The internal mass application mechanism does not function properly.

Perform the weighing operation from the beginning again.

Display Error code Description

EC, E20 Calibration weight error

The calibration weight is too heavy. Confirm the calibration weight value.

Press the CAL key to return to the weighing mode.

EC, E21 Calibration weight error

The calibration weight is too light. Confirm the calibration 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.

Weighing pan Error

The weight value is too light.

Confirm that the weighing pan is properly installed and calibrate 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 too light. Storing and using it for counting will cause a counting 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.

Automatic response adjustment zero error

The automatic response adjustment can not be performed because there is something on the pan.

Clear the pan. Press the CAL key to return to the weighing mode.

Automatic response adjustment unstable error

(CHECK NG)

(CHECK NO)

The automatic response adjustment can not be performed because the weight value is unstable.

Check the ambient conditions such as breeze, vibration and magnetic fields, also check the weighing pan. Press the CAL key to return to the weighing mode.

Internal error

Indicates an internal error as the result of self-check function.

Repair is required. Contact the local A&D dealer.

Display Error code Description

Clock battery error

The clock backup battery has been depleted.

Press any key and set the time and date. The clock and calendar function works normally as long as the AC adapter is connected to the balance. If this error appears frequently, contact the local A&D dealer.

(Blinking)

(Illuminated)

Memory type error

EC, E00 Communications error

Memory full

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 full

The amount of calibration or calibration test data in memory has reached the maximum capacity (50 sets).

The data in memory will be deleted automatically to store new data. For details, refer to “12. DATA MEMORY”.

Type of memory set in the function table and type of data stored are different.

For details, refer to “12. DATA MEMORY”.

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 ready

A received command can not be processed.

e.g. The balance received a Q command, but not in the

weighing mode.

e.g. The balance received a Q command while

processing a RE-ZERO command.

Adjust the delay time to transmit a command.

EC, E03 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 a command.

Confirm the command.

Display Error code Description

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 or

other errors are displayed, contact the local A&D dealer.

Other symbol

When this indicator blinks, automatic self calibration is required. The indicator blinks when the balance detects changes in ambient temperature. If the balance is not used for several minutes with this indicator blinking, the balance performs automatic self calibration. The blinking period depends on the operating environment.

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.

21. SPECIFICATIONS

GX-200 GX-300 GX-400 GX-600 GX-800 GX-1000

Weighing capacity

Maximum display

Minimum weighing value (1 digit)

Repeatability (Standard deviation)

Linearity

Stabilization time (typical at FAST)

Sensitivity drift (10°C-30°C/50

Accuracy right after calibration using the internal mass. See notes below

Operating environment

Display refresh rate

Counting mode

Percent mode

External calibration weight

F-86°F )

Minimum unit mass

Number of samples

Minimum 100% reference mass

Minimum 100% display

210 g 310 g 410 g 610 g 810 g 1100 g

210.084 g 310.084 g 410.084 g 610.084 g 810.084 g

0.001 g

0.002 g

Approx. 1 second Approx. 1.5 seconds

±2 ppm/°C (When automatic self calibration is not used)

0.010 g

The value above is to the weighing capacity.

5°C to 40°C (41°F to 104°F)

85%RH or less (No condensation)

5 times/second or 10 times/second

0.001 g

10, 25, 50 or 100 pieces

0.100 g 0.001 g

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

0.003 g

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

1100.084 g

1000 g

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

Weighing pan

Net weight

External dimensions

AC adapter

Power consumption

Interface (Provided as standard)

Notes

Accuracy right after calibration using the internal mass in good ambient conditions (within

the temperature range of 10°C to 30°C (50°F to 86°F) with no abrupt changes in temperature

or humidity, no drafts, no effect by magnetic fields or static electricity).

The internal mass has a mass of approximately 500 grams.

Check the internal mass periodically as described in “19. MAINTENANCE”.

Confirm that the adapter type is correct for the local voltage and power receptacle type

RS-232C with Windows Communication Tools WinCT

210 (W) x 317 (D) x 86 (H) mm

Approx. 11VA (supplied to the AC adapter)

128 x 128 mm

Approx. 4.6 kg

GX-2000 GX-3000 GX-4000 GX-6100 GX-6000 GX-8000

Weighing capacity

Maximum display

Minimum weighing value (1 digit)

Repeatability (Standard deviation)

Linearity

Stabilization time (typical at FAST)

Sensitivity drift (10°C-30°C/50

F-86°F )

Accuracy right after calibration using the internal mass. See notes below

Operating environment

Display refresh rate

Counting mode

Percent mode

Minimum unit mass

Number of samples

Minimum 100% reference mass

Minimum 100% display

External calibration weight

2100 g 3100 g 4100 g 6100 g 6100 g 8100 g

2100.84 g 3100.84 g 4100.84 g 6100.84 g 6108.4 g 8108.4 g

0.01 g 0.1 g

0.02 g

Approx. 1 second

±2 ppm/°C

0.03 g

Approx.

1.5 s

0.1 g

Approx. 1 second

±5 ppm/°C

(When automatic self calibration is not used)

0.10 g

0.15 g

0.5 g

The value above is to the weighing capacity.

5°C to 40°C (41°F to 104°F)

85%RH or less (No condensation)

5 times/second or 10 times/second

0.01 g 0.1 g

10, 25, 50 or 100 pieces

1.00 g

10.0 g

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

2000 g 1000 g

3000 g 2000 g 1000 g

4000 g 3000 g 2000 g

6000 g 5000 g 4000 g 3000 g 2000 g

8000 g 7000 g 6000 g 5000 g 4000 g 3000 g 2000 g

Weighing pan

Net weight

External dimensions

AC adapter

210 (W) x 317 (D) x 86 (H) mm

Confirm that the adapter type is correct for the local voltage and power

165 x 165 mm

Approx. 5.1 kg

receptacle type

Power consumption

Interface (Provided as standard)

Approx. 11VA (supplied to the AC adapter)

RS-232C with Windows Communication Tools WinCT

Notes

Accuracy right after calibration using the internal mass in good ambient conditions (within

the temperature range of 10°C to 30°C (50°F to 86°F) with no abrupt changes in temperature

or humidity, no drafts, no effect by magnetic fields or static electricity). The internal mass has a mass of approximately 500 grams. Check the internal mass periodically as described in “19. MAINTENANCE”.

22. OPTIONS

Glass Breeze Break Glass Breeze Break Animal Weighing Bowl Kit Density Determination (GX-10) (GX-11) (GX-12) Kit (GX-13)

For GX-200/300/400/600 For GX-2000/3000/4000/ For all models except GX-200 Only for GX-200/300/400/600 800/1000 6100/6000/8000 The mass of the Animal Weighing 800/1000 Bowl Kit is approx. 200g.

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 to

a 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 a computer. This allows management of the balance weighing data with a computer connected to a network.

(

)

AD-8920 Remote display

 Connected to the GX series using the RS-232C interface to display the weighing data away

from the balance.

AD-8922 Remote controller

 Connected to the GX series using the RS-232C interface to display the weighing data and to

remotely 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 is

installed.

 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 GX series

balance

USB serial

converter

To USB port

on a PC

RS-232C cable provided

D-sub 25-pin

AD-1683 DC static eliminator

z Used to minimize weighing errors due to static electricity on the material.

AD-1684 Electrostatic field meter

z 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

z 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

z Used to compare weighing data and output the results.

GX-06 Analog output / Current loop output

z Used to output the weighing data as an analog voltage.

23. EXTERNAL DIMENSIONS

24. TERMS/INDEX

Terms

Stable value The weight data when the stabilization indicator appears.

Environment Ambient conditions such as vibration, drafts, temperature, static electricity and

magnetic 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.

Output To 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-zero To set the display to zero.

GLP Good Laboratory Practice.

Repeatability Variation in measured values obtained when the same weight is placed and

removed 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 indicator

illuminates and the weighing data is displayed.

Sensitivity drift An affect that a change in temperature causes to the weighing data. Expressed

as temperature coefficient.

e.g. Temperature coefficient = 2 ppm/°C : If a load is 500 g and the temperature

changes by 10°C, the value displayed changes by the following value.

0.0002%/°C x 10°C x 500 g = 10 mg

Index

Keys and symbols

CAL key ...................................... 11, 15

MODE key ............................ 11, 12, 15

ON/OFF key ............................... 11, 32

PRINT key .................................. 11, 15

RE-ZERO key......................... 9, 11, 15

SAMPLE key .............................. 11, 15

Animal mode indicator ................... 11

Comparator indicators.................... 11

Interval memory active indicator.... 11

Interval memory standby indicator. 11 Prior notice indication of automatic

self calibration................................ 11

Processing indicator...................... 11

Response indicators ............. 11

Stabilization indicator............... 11, 15

Standby indicator ........................... 11

- A -

A&D standard format ................................... 41

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 ................... 84

AD-1683 DC static eliminator ......................86

AD-1684 Electrostatic field meter ................ 86

AD-1689 Tweezers for calibration weight ....86

AD-8121 ......................................................67

AD-8121B Printer ........................................84

AD-8526 LAN converter ..............................84

AD-8920 Remote display............................. 85

AD-8922 Remote controller ......................... 85

Animal mode indicator ................................. 11

Auto display-OFF......................................... 39

Auto display-ON ..........................................39

Auto print mode ........................................... 40

Automatic Response Adjustment................. 22

Automatic Self Calibration .......................3, 25

AX-SW128 Foot switch................................ 85

AX-USB-25P-EX USB converter .................85

- B -

Breeze ring .............................................. 7, 78

Bubble spirit level ......................................6, 7

- C -

Calibration..............................................24, 25

Calibration test .......................................24, 29

Capacity indicator ..............................3, 11, 39

Comparator function ....................................48

CSV format ..................................................42

- D -

Data memory ...............................................54

Data number ................................................43

Density determination kit..............................62

Digit .................................................28, 39

DP (Dump print) format................................41

- E -

EC, E00 .......................................................80

EC, E01 .......................................................80

EC, E02 .......................................................80

EC, E03 .......................................................80

EC, E04 .......................................................80

EC, E06 .......................................................81

EC, E07 .......................................................81

EC, E11 .......................................................78

EC, E16 .......................................................78

EC, E17 .......................................................78

EC, E20 .......................................................79

EC, E21 .......................................................79

External input...............................................66

- F

FAST .......................................................22

- G -

Glass breeze break......................................84

GLP ...................................................3, 50

Grounding terminal ....................................6, 7

GX-02 USB interface ...................................84

GX-04 .......................................................86

GX-06 .......................................................86

GX-10 .......................................................84

GX-11 .......................................................84

GX-12 .......................................................84

GX-13 .......................................................84

- H -

Hold function..........................................21, 38

- I -

ID number.................................................... 50

Inhibit ...................................................... 32

Initializing the Balance................................. 33

Interval memory mode................................. 41

- K -

Key mode .................................................... 40

KF format..................................................... 42

- L -

Leveling foot .............................................. 6, 7

Linearity .......................................... 77, 82, 83

lo ................................................ 19, 20

LO ...................................................... 48

- M -

Main unit cover .......................................... 6, 7

Memory full.................................................. 80

MID. ...................................................... 22

MT format .................................................... 42

- N -

NU (Numerical) format................................. 42

- O -

100% reference mass ................................. 20

- P -

Pan support receptor................................. 6, 7

Percent Mode .............................................. 20

Permit ...................................................... 32

- R -

Reference card...................................... 4, 6, 7

Repeatability.............................. 77, 82, 83, 88

RESPONSE ................................................22

Response characteristic ..............................22

RS-232C serial interface..............................65

RsCom .......................................................68

RsKey .......................................................68

- S -

Self check function.......................................22

Sensitivity drift........................................82, 83

SLOW .......................................................22

Stability band width ......................................38

Stabilization time..............................82, 83, 88

Stable value ..................................... 22, 38, 88

Static electricity ........................................ 9, 78

Stream mode ...............................................40

- U -

Underhook ...............................................9, 60

Unit mass.....................................................18

Units .......................................................12

- W -

Warm up ........................................7, 8, 10, 39

Weighing capacity.............. 3, 9, 39, 79, 82, 83

Weighing pan.............................................6, 7

WinCT .......................................................68

- Z -

Zero point ..................................27, 29, 39, 88

Zero tracking................................................ 39

A&D GX-8000 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual