A&D FZ-1200CT User manual

FZ-CT SERIES
FZ-1200CT /FZ-700CT /FZ-500CT
FX-CT SERIES
FX-1200CT /FX-700CT /FX-500CT
Carat Balance
INSTRUCTION MANUAL
1WMPD4002564

© 2012 A&D Company, Limited. All rights reserved.
No part of this publication may be reproduced, transmitted, transcribed, or translated
into any language in any form by any means without the written permission of A&D
Company, Limited.
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 the registered trademarks of the Microsoft Corporation.

1
CONTENTS
BASIC OPERATION
1. INTRODUCTION.............................................................................................................................3
1-1 About This Manual.....................................................................................................................3
1-2 Features.....................................................................................................................................3
1-3 Compliance................................................................................................................................4
2. UNPACKING THE BALANCE..........................................................................................................5
2-1 Unpacking..................................................................................................................................5
2-2 Installing the Balance.................................................................................................................6
3. PRECAUTIONS...............................................................................................................................7
3-1 Before Use.................................................................................................................................7
3-2 During Use.................................................................................................................................8
3-3 After Use....................................................................................................................................9
3-4 Power Supply.............................................................................................................................9
4. DISPLAY SYMBOLS AND KEY OPERATION...............................................................................10
5. WEIGHING....................................................................................................................................11
5-1 Basic Operation .......................................................................................................................11
ADAPTING TO THE ENVIRONMENT
6. RESPONSE ADJUSTMENT..........................................................................................................12
7. CALIBRATION...............................................................................................................................13
7-1 Calibration Mode......................................................................................................................13
7-2 Calibration Using the Internal Mass (One-Touch Calibration, only for the FZ-CT series).........14
7-3 Calibration Test Using the Internal Mass (Only for the FZ-CT series)......................................15
7-4 Calibration Using an External Weight ......................................................................................16
7-5 Calibration Test Using an External Weight...............................................................................18
7-6 Correcting the Internal Mass Value: 1 (Only for the FZ-CT series) ..........................................20
7-7 Correcting the Internal Mass Value: 2 (Only for the FZ-CT series) ..........................................21
8. FUNCTION SWITCH AND INITIALIZATION..................................................................................22
8-1 Permit or Inhibit........................................................................................................................22
8-2 Initializing the Balance.............................................................................................................23
FUNCTIONS
9. FUNCTION TABLE........................................................................................................................24
9-1 Structure and Sequence of the Function Table........................................................................24
9-2 Display and Keys.....................................................................................................................24
9-3 Details of the Function Table....................................................................................................25
9-4 Description of the Class “Environment, Display”......................................................................28
9-5 Description of the Item “Data Output Mode” ............................................................................29

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9-6 Description of the Item “Data Format”......................................................................................31
9-7 Data Format Examples............................................................................................................33
9-8 Units ........................................................................................................................................35
9-9 Storing Units ............................................................................................................................37
9-10 Counting Mode (PCS)............................................................................................................38
9-11 Percent Mode (%)..................................................................................................................40
9-12 Description of the Item “Application Function”.......................................................................41
9-13 Statistical Calculation Mode...................................................................................................42
9-14 Comparator Function.............................................................................................................46
9-15 Clock and Calendar Function (Only for the FZ-CT series).....................................................47
10. ID NUMBER AND GLP REPORT................................................................................................49
10-1 Setting the ID Number...........................................................................................................49
10-2 GLP Report............................................................................................................................49
11. UNDERHOOK .............................................................................................................................53
12. PROGRAMMABLE-UNIT............................................................................................................54
RS-232C SERIAL INTERFACE
13. RS-232C SERIAL INTERFACE...................................................................................................55
14. CONNECTION TO PERIPHERAL EQUIPMENT.........................................................................56
14-1 Connection to the AD-8121B Printer......................................................................................56
14-2 Connection to a Computer.....................................................................................................57
14-3 Using Windows Communication Tools (WinCT).....................................................................57
15. COMMANDS...............................................................................................................................59
15-1 Command List .......................................................................................................................59
15-2 Acknowledge Code and Error Codes.....................................................................................60
15-3 Settings Related to RS-232C.................................................................................................61
MAINTENANCE
16. MAINTENANCE ..........................................................................................................................62
17. TROUBLESHOOTING ................................................................................................................63
17-1 Checking the Balance Performance and Environment ..........................................................63
17-2 Error Codes ...........................................................................................................................64
17-3 Asking For Repair..................................................................................................................66
18. OPTIONS....................................................................................................................................67
19. SPECIFICATIONS.......................................................................................................................70
20. EXTERNAL DIMENSIONS..........................................................................................................72
21. TERMS/INDEX............................................................................................................................73

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1. INTRODUCTION
This manual describes how the FZ-CT and FX-CT series balances work and how to get the most out
of them 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 and calibration.
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
 Compact general-purpose balance, can be installed almost anywhere.
Large breeze break, provided as a standard accessory for more accurate weighing.
The breeze break can be removed with one touch, so cleaning is simple.
 Casing construction, strong protection against dust and moisture.
 Carat pans for weighing jewelry, provided as standard accessories,
 Multiple weighing units with most of the common units used around the world.
The default settings of the unit of weight are the metric carat (ct) and grams (g). The unit can
be switched by pressing the MODE key.
Standard RS-232C serial interface to communicate with a computer and to output the Good
Laboratory Practice (GLP) / Good Manufacturing Practice (GMP) compliant report.
Statistical calculation mode to statistically calculate the weight data, and display or output the
sum, maximum, minimum, range (maximum-minimum), average, standard deviation,
coefficient of variation, relative error of maximum value and relative error of minimum value.
 Comparator Indicators, displaying the comparison results.
Underhook, provided for suspended weighing.
Hold Function, provided for weighing a moving object such as an animal.
As options, the USB interface (FXi-02), the Ethernet interface (Fxi-08) and the built-in battery
unit (Fxi-09) are available.
Connecting the USB interface, by cable to a Windows computer, allows transmission of the weight
data to Excel or Word. The Ethernet interface allows connection of the balance to a personal
computer through a LAN. The battery unit allows use of the balance where a power source is not
available.
Optional AD-8920A remote display, connected to the balance using the RS-232C interface to
display the weight data away from the balance or at a desirable viewing angle. The power to
the AD-8920A is supplied from the balance. So, cable hookups are simplified.

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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 and safety regulation in compliance
with the following Council Directives
Council directive 2004/108/EC EN61326 EMC directive
Council directive 2006/95/EC EN60950 Safety of Information Technology Equipment
The CE mark is an official mandatory European marking.
Please note that any electronic product must comply with local laws and regulations when sold or
used anywhere outside Europe.

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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.
See the illustration to confirm that everything is contained.
For accurate weighing, install the breeze break before use.
The AC adapter plug is
protected against dust
and may be difficult to
insert. When inserting
the plug, turn the plug
while pushing on it.
Note
Please confirm that the AC adapter type is
correct for your local voltage and receptacle

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2-2 Installing the Balance
Install the balance as follows:
1. Place the balance on a solid weighing table. Refer to “3. PRECAUTIONS” for installing the balance.
2. Assemble the breeze ring, pan support, weighing pan and large breeze break on the balance as
shown in the illustration on page 5.
3. Adjust the leveling feet to level the balance. Confirm it using the bubble spirit level.
4. Confirm that the AC 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 one hour with
nothing on the weighing pan.
Note
The AC adapter plug is protected against dust and may be difficult to insert. When inserting
the plug, turn the plug while pushing on it.

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3. PRECAUTIONS
To get the optimum performance from the balance and acquire accurate weight 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.
Make sure that the bubble is in the center of the red circle.
Ensure a stable power source when using the AC adapter.
Plug in the AC adapter and warm up the balance for at least one hour.
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.

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3-2 During Use
Discharge static electricity from the material to be
weighed (hereinafter referred to as the sample). When
a sample could have a static charge, the weight data is
influenced. Ground the balance and try the following:
Eliminate static electricity using the optional
AD-1683 DC static eliminator.
Try to keep the ambient humidity above 45%RH.
Use a metal shield case for a charged sample.
Wipe charged plastic samples with a moistened 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.
Eliminate the temperature difference between a sample and the environment. When a sample
is warmer (cooler) than the ambient temperature, the sample will be lighter (heavier) than the
true weight. This error is due to a rising (falling) draft around the sample.
Make each weighing gently and quickly to avoid errors caused by the evaporation of moisture
from the sample or the absorption of moisture by the sample.
Use a pair of long tweezers to place a sample on the pan to avoid placing a hand inside the
breeze break.
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 eliminate possible errors.
Calibrate the balance periodically so as to eliminate 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.
 An antistatic treatment has been applied to the components of the breeze break that is provided
as standard, but they may be charged with static electricity when they are unpacked or when the
humidity is low. Under such conditions, use the optional AD-1683 DC static eliminator or apply
an antistatic spray to eliminate static electricity,

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3-3 After Use
Avoid mechanical shock to the balance.
Do not disassemble the balance. Contact the localA&D dealer if the balance needs service or repair.
Avoid dust and water so that the balance weighs correctly. Protect the internal parts from liquid
spills and excessive dust.
Do not use organic solvents or chemical cloth to clean the balance.
Clean the balance as described below:
Balance main unit
Weighing pan Use a soft, lint free cloth that is moistened with a mild detergent to clean. The edge of the weighing pan is sharp. Use caution when cleaning the
pan.
Breeze break
(standard accessory) An antistatic treatment has been applied to the breeze break components. Use a soft, dry, lint free cloth to clean.
Cleaning with a cloth that is moistened with water or a mild detergent
repetitively, or washing with water, may degrade the antistatic effect.
3-4 Power Supply
 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
one hour before use.

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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
Each key, when pressed or when pressed and held, functions as follows:
Key When pressed When pressed and held
Turns the display on or off. The standby indicator is displayed when the display 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.
In the weighing mode, turns the minimum
weighing value on or off.
In the counting or percent mode, enters
the sample storing mode.
Enters the function table mode.
Refer to “9. FUNCTION TABLE”.
Switches the weighing units stored in the
function table.
Refer to “9-9 Storing Units”.
Enters the response adjustment mode.
Cancels the operation when performing
settings. With the FZ-CT series, enters
the calibration mode using the internal
mass. (One-touch calibration)
Enters the calibration mode using an
external weight.
Outputs the weight data to a printer or
personal computer using the RS-232C
serial interface, depending on the
function table settings.
Confirms the operation when performing
settings.
No function at the factory setting
By changing the function table:
Outputs “Title block” and “End block” for
GLP/GMP compliant report.
(Refer to “10-2 GLP Report”.)
Sets the display to zero.

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5. WEIGHING
The default settings of the unit of weight are the metric carat (ct) and grams (g).
Pressing the MODE key switches the displayed unit, between ct and g.
To use other units, refer to “9-9 Storing Units” on page 37 to store the units.
5-1 Basic Operation
1 Place a container (carat pan) on the weighing pan, if
necessary.
Press the RE-ZERO key to cancel the weight (tare). The
balance displays 0.000 .
2 Place a sample on the pan or in the container.
3 Wait for the stabilization indicator to be displayed. Read
the value.
While the stabilization indicator is on, pressing the PRINT
key will output the weight value, using the RS-232C serial
interface.
Note
Peripheral equipment, that is sold separately , such 4
Remove the sample and container from the pan.
Notes
When other units of weight are stored as described in “9-9
Storing Units”, pressing the MODE key switches the
displayed unit.
Press the SAMPLE key to turn on or off the minimum
weighing value.
When the ON:OFF key is pressed with a container placed
on the weighing pan, the balance displays 0.000 and
weighing is started,

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6. RESPONSE ADJUSTMENT
This function stabilizes the weight value, reducing the influence on weighing that is caused by drafts
and vibration at the place where the balance is installed.
The function has three stages as follows and can be changed by simple key operation.
Indicator Description
FAST Fast response, but prone to drafts and vibration.
Good for target weighing.
MID.
SLOW Slow response, but strong against drafts and vibration
Good for weighing which requires a stable display.
Operation
1 Press and hold the MODE key until RESPONSE is
displayed. And then, release the key.
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, or when the PRINT
key is pressed, the balance displays eend . Then, it
returns to the weighing mode and displays the
updated response indicator. The response indicator
remains displayed for a while.
Note
Setting the response rate automatically changes the
“Condition (Cond)” and “Display refresh rate (5pd)”
parameters of “Environment, Display (ba5fnc)” in the
function table, as shown below:
Indicator Cond (Condition) 5pd (Display refresh rate)
FAST 01( 10 times/second)
MID. 10 (5 times/second)
SLOW 20 (5 times/second)
When the balance is to be used with other setting
combinations, set each parameter in the function table.

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7. CALIBRATION
7-1 Calibration Mode
Calibration / Calibration test (Calibration test does not perform calibration.)
Calibration Using the Internal mass (One-touch calibration,only for the FZ-CT series)
Calibration using an external weight
Calibration test using the internal mass (Only for the FZ-CT series.)
Calibration test using an external weight
Terms
The following terms are defined as follows:
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 = A weight used for calibration test
Caution
When calibrating, be sure to install the provided large breeze break.
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 GLP/GMP compliant report using the RS-232C serial interface, set “GLP output
( info )” of “Data output ( dout )”. For details, refer to “9. FUNCTION TABLE”.
Calibration test is available only when “GLP output ( info )” of “Data output ( dout )” is set to “1” or “2”.
Caution on using an external weight
The accuracy of an external weight will influence the accuracy of weighing. Select an
appropriate weight as listed below:
Model Usable calibration weight Adjustable range
FZ-1200CT / FX-1200CT 250 g, 200 g,100 g, 50 g, 20 g
FZ-700CT/ FX-700CT 150 g, 100 g,50 g, 20 g
FZ-500CT/ FX-500CT 100 g,50 g, 20 g -0.0150 g to +0.0150 g
The calibration weight in bold type: factory setting
The calibration weight value can be adjusted within the range above.
Display
This indicator means “the balance is measuring calibration data”.
Do not allow vibration or drafts to affect the balance while this
indicator is displayed.

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7-2 Calibration Using the Internal Mass (One-Touch Calibration, only for the F Z - CT series )
This function calibrates the balance using the internal mass. The only operation required is to press
the CAL key. (The FX-CT series does not have the one-touch calibration function.)
Operation
1 Connect the AC adapter and warm up the balance for at least one hour 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. For details on the calibration report format, refer to “10-2 GLP
Report”.
5 The balance automatically returns to the weighing mode after calibration.
About the internal mass
The value of the internal mass may change due to corrosion or other damage caused by the
operating environment, or due to aging. The internal mass value can be corrected using an
external mass. To maintain the weighing accuracy, perform the internal mass value correction
periodically.
For details, refer to “7-6 Correcting the internal mass value: 1” and “7-7 Correcting the internal
mass value: 2”.

15
7-3 Calibration Test Using the Internal Mass (Only for the FZ-CT series)
This function tests the balance weighing accuracy using the internal 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.)
1 Connect the AC adapter and warm up the balance
at least one hour with nothing on the pan.
2 Refer to “9. FUNCTION TABLEL” to set “GLP
output (info)” to “1” or “2”
3 Press and hold the CAL key until CC in is
displayed, then release the key.
4 The balance measures the zero point.
Prevent vibration and drafts to affect the balance.
5 The measured zero point data is di played.
6 The balance measures the internal mass.
Prevent vibration and drafts to affect the balance.
7 The value of the internal mass is displayed.
The normal range of the value is as follows:
Model The internal mass The normal range
FZ-1200CT 200.000 g
FZ-700CT
FZ-500CT 100.000 g ±0.002 g
8 The calibration test report is output using the
RS-232C interface.
9 The balance automatically returns to the weighing mode.

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7-4 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 one hour with nothing on the pan.
2 Press and hold the CAL key until Calout is
displayed, and then release 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 13),
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
three digits blinking” (value
adjustment mode).
RE-ZERO key (To increase the value)
MODE key (To decrease the value)
To select the calibration
weight or adjust the value.
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 Cal 0 .

17
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.
8 When the GLP output is set, the balance displays
1 glp and outputs “Calibration Report”.
9 The balance automatically returns to the weighing
mode.
10 Press the MODE key to select the gram mode.
Place the calibration weight on the pan and confirm
that the value displayed is within ±0.002 g of the
calibration weight value. If it is not within the range,
check the ambient conditions such as drafts and
vibration, also check the weighing pan. Then,
repeat steps 1 to 9.

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7-5 Calibration Test Using an External Weight
This function tests the balance weighing accuracy using an external weight 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 one hour with nothing on the pan.
2 Press and hold the CAL key until CCout is
displayed, and then release 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 13), 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 three digits blinking”
(value adjustment mode).
RE-ZERO key (To increase the value)
MODE key (To decrease the value)
To select the target weight or
adjust the value.
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 CC 0 .