1WMPD4001803C（日本語の取扱説明書は反対面をご覧ください。）

1. Introduction
The AD-8920A is a remote display for displaying the weighing data transmitted by an A&D
manufactured weighing instrument, using either RS-232C or current loop. Applicable weighing
instruments (electronic balances/platform scales) are listed below.
 What the package contains

・AD-8920A main unit
1 unit・AC adapter
1 pc
CAUTION
Please confirm that the AC adapter
type is correct for your local voltage
and receptacle type.
・Identification label
2 pcs(one each for AC adapter and cable)・Instruction manual1 copy
・Communication cable 2 pcs *(approx. 1 m)
* A D-SUB25 cable and a D-SUB9cable are included unless DIN
cable is specified when ordering.
In that case, only a single DIN
cable is included.

 Accessories (sold separately)・Communication cable (approx. 5 m)
D-SUB9 cable
D-SUB25 cable
DIN cable

AX-KO3412-05M
AX-KO1864-05M
AX-KO3413-05M

D-SUB9 cable
D-SUB25 cable
DIN cable

AX-KO3412-10M
AX-KO1864-10M
AX-KO3413-10M

・Communication cable (approx. 10 m)

Table 1 Applicable instruments, required options and cables (As of September 2018)
Using RS-232C
Using current loop
Weighing instrument
OptionCommunication
OptionCommunication
requiredcablerequiredcableAD-4212A/B, GR
None
D-SUB25 cableNot applicable
BM, EK-i, EW-i, EK-L, FC-i,
FX-i, FX-CT, FX-GD, FXi-WP,
FZ-i, FZ-CT, FZi-WP, FZi-R,
None
D-SUB9 cableNot applicable
FZi-WPR, GX-A, GF-A,GX-M, GF-M, GH, HR-i,HR-A, HR-AZ
EJ, EJ-B, HV-C, HW-C
OP-03
D-SUB9 cableNot applicable
ET-W, ET-WR
OP-03W
D-SUB25 cable
OP-05W
DIN cable
FG-KAM/KAL/KBM,
OP-23 or
DIN cable
Not applicable
FG-KAM/KAL/KBM-K
OP-24
HC-i
OP-03
DIN cable
Not applicable
FT
OP-04
D-SUB25 cable
None
DIN cable
FT-i, FT-i-K, SN, SN-K
OP-05 or
D-SUB9 cable
OP-08
DIN cable(excluding SN-KWP/KFP)
OP-08
GX, GX-R, GF, GX-K, GX-KR,
OP-04 orNone
D-SUB25 cable
DIN cable
GF-K, GP, GP-R, MC
OP-06
HD
OP-03
D-SUB25 cable
OP-05
DIN cable
HR-200/120/60
OP-03
D-SUB25 cable
OP-03
DIN cable
HV-G, HW-G, HV-WP, HW-WP
NoneDIN cableNot applicable
EK-AEP
AD-1611
D-SUB9 cableNot applicable Connection diagram
When D-SUB9/D-SUB25 cable is used When DIN cable is used
AD-8920A main unit

AC adapter Communication
cableIdentification
labelsThe D-SUB9 cable (standard oraccessory) is for use only withthe AD-8920A.
If used with an older AD-8920,
AC adapter it could blow the fuse or cause
other damage to the weighing
instrument.
Attach the identification labelon the cable so that it will beused only with the AD-8920A.

920A

AD892A0AAItem2020

2. Preparation
2-1. Setting the weighing instrument(1) Set the data output mode to “Stream mode”.
(2) For the other settings, refer to Table 2.

89

89

ADAD

Communication
cable
Identification
labels

AD-8920A main unit

Weighing
instrument

AD8

Weighing
instrument

CAUTION

Table 2 List of instrument settings
Setting

Description

Data output mode
Stream mode
Outputs the weighing data continuously.
Baud rate
600, 1200, 2400, 4800, 9600 bps
AD-8920A recognizes the baud rate automatically.
7 bits-even, 7 bits-odd, or 8
Length, Parity bitAD-8920A functions correctly with any one of those listed.
Stop bits
1 bit or 2 bits
AD-8920A functions correctly with either one.
Terminator<CR> or <CR><LF>
AD-8920A functions correctly with either one.
Data format
A&D standard format
CTS control
No control of CTS, RTS
Output (hardware)
RS-232C or current loop
AD-8920A recognizes the output mode automatically.
Note) The available items depend on the weighing instrument and may not be available when the settings are fixed.
For a detailed description of the settings, refer to the instruction manual for the weighing instrument used.

2-2. Connecting the AD-8920A(1) Refer to Table 1 shown above to confirm that the communication cable is of the correct type.
(2) Disconnect the AC adapter from both the weighing instrument and the AD-8920A.
Refer to the connection diagram shown above to connect the AD-8920A to the weighing
instrument, using the specified communication cable.
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3. Display
3-1. Confirm that the AC adapter is of the correct type. Connect the AC adapter each to the weighing
instrument and the AD-8920A to turn the power on.
All of the display segments of the AD-8920A illuminate, and then the weighing data transmitted
from the weighing instrument appears. The status of the data is indicated by a triangle (▼).
Table 3 Symbol (▼) and data status
Position of symbol (▼)
Status of weighing dataST(-)

The weighing data is stable.
The weighing data is negative.
Usually the minus sign is placed before a numeric value,
but for a 7-digit negative value, the symbol (▼) illuminates.
The weighing unit is momme.
The weighing unit is carat.
The weighing unit is gram.

momctgNote: The unit indicating ▼ does not illuminate for weighing units other thanthose described above.

3-2. If the weighing data is overloaded,orappears.
3-3. If the data receiving procedure is interrupted, ------- or(blank) appears.
3-4. If the power is turned on without a weighing instrument connected, all of the display segments willremain illuminated.
4. Maintenance / Troubleshooting
4-1. Cleaning
For cleaning, wipe the AD-8920A with a soft cloth. Do not use solvents such as thinner.
4-2. If the display brightness is not even:
Turn the AD-8920A on without the weighing instrument connected. All of the display segments willilluminate. Leave the AD-8920A this way for a few hours.
4-3. If the AD-8920A does not function properly: (Before asking for repair, check the following.)
・Is the AC adapter type correct?
・Is the cable connected firmly?
・Are the weighing instrument settings correct?
(Particularly, has the data output mode been set to stream mode, and the data format to A&D
standard format?)・Is data other than the weighing data, such as time or ID number, being output?
5. Specifications

Table 5-1 Specifications
Approx. 30VA supplied by the AC
Modular jackPoweradapter (Approx. 8VDC, at approx.
terminal No.
consumption
0.2ADC supplied to the AD-8920A)
Display
7-digit VFD, Character height 13mm
Signal
RS-232C / Current loop (ACTIVE)
Pin 4
Pin 1
Baud rate
600, 1200, 2400, 4800, 9600 bps
Table
5-2
Pinassignment(Automatic recognition)
Length, Parity bit 7 bits-even, 7 bits-odd, 8 bits-none
Pin No.
RS-232C
Current loop
Stop bits
1 bit or 2 bits2
RXD (Connects to the TXD output
Current loopof the weighing instrument)(+)
Terminator<CR> or <CR><LF>
DisplayApprox. 20 times/second3SG (Connects to SG)
Current loop (-)
refresh rate
(when baud rate is 4800 bps or greater) *1
1, 4
For power supply
Input connector Modular jack
*1 With the condition that the weighing instrument
Communication Approx. 1 m *2transmits data 20 times per second.
cable*2 A special cable of approx. 5 m or 10 m is available.
Dimensions
128(W)×102 (H)×76(D) Unit: mm*3 AC adapter and communication cable are not included.
Net weightApprox. 230g *3
Compliance with FCC rules
Operating
0 ºC to 40 ºC (32 ºF to 104 ºF),
Please note that this equipment generates, uses and can radiate radioenvironment
85 %RH or less (No condensation)
frequency energy. This equipment has been tested and has been foundto comply with the limits of a Class A computing device pursuant to6. External dimensions
Subpart J of Part 15 of FCC rules. These rules are designed to provide
reasonable protection against interference when equipment is operated
REMOTE DISPLAY
AD-8920A
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 arenecessary to eliminate the interference. (FCC = Federal Communications
Commission in the U.S.A.)

102AD-8920A REMOTE DISPLAY INSTRUCTION MANUAL

Unit:mmg128

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