P-4/4
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 (
ۂ
).
Table 3 Symbol (
ۂ
) and data status
Position of symbol (
ۂ
)
Status of weighing data
ST
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 (
ۂ
) illuminates.
mom
The weighing unit is momme.
ct
The weighing unit is carat.
g
The weighing unit is gram.
Note: The unit indicating
ۂ
does not illuminate for weighing units other than
those described above.
3-2. If the weighing data is overloaded,
or
appears.
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 will
remain 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 will
illuminate. 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
Power
consumption
Approx. 5VA supplied by the AC
adapter (Approx. 8VDC, at approx.
0.2ADC supplied to the AD-8920A)
Display
7-digit VFD, Character height 13mm
Signal
RS-232C / Current loop (ACTIVE)
Baud rate
600, 1200, 2400, 4800, 9600 bps
(Automatic recognition)
Table 5-2 Pin assignment
Length, Parity bit
7 bits-even, 7 bits-odd, 8 bits-none
Pin No.
RS-232C
Current loop
Stop bits
1 bit or 2 bits
Terminator
<CR> or <CR><LF>
2
RXD (Connects to the TXD output
of the weighing instrument)
Current loop
(+)
3
SG (Connects to SG)
Current loop (-)
Display
refresh rate
Approx. 20 times/second
(when baud rate is 4800 bps or greater)
*1
1, 4
For power supply
Input connector
Modular jack
Communication
cable
Approx. 1 m
*2
*1
With the condition that the weighing instrument
transmits data 20 times per second.
Dimensions
128(W)
102 (H)
76(D)
Unit: mm
*2
A special cable of approx. 5 m or 10 m is available.
Net weight
Approx. 230g
*3
*3
AC adapter and communication cable are not included.
6. External dimensions
Pin 4
Pin 1
Modular jack
terminal No.
102
128
76
Unit:mm
g
AD-8920A
REMOTE DISPLAY
Compliance with EMC directive
This device features radio interference suppression in compliance with
valid EC Regulation 2004/108/EC.
Compliance with FCC rules
Please note that this equipment generates, uses and can radiate radio frequency energy.
This equipment has been tested and has been found to comply with the limits of 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 the equipment 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 expenses, whatever measures are necessary to eliminate
the interference. (FCC=Federal Communications Commission in the U.S.A.)
