A&D AD-8931 User manual

1WMPD4003853
Wireless Remote
Display
AD-8931

This Manual and Marks
All safety messages are identified by the following, "WARNING" or "CAUTION", of ANSI Z535.4 (American
National Standard Institute: Product Safety Signs and Labels). The meanings are as follows:
WARNING A potentially hazardous situation which, if not
avoided, could result in death or serious injury.
CAUTION A potentially hazardous situation which, if not
avoided, may result in minor or moderate injury.
This is a hazard alert mark.
©2019 A&D Company Ltd. All rights reserved.
No part of this publication may be reproduced, transmitted, transcribed, or translated into any language in any
form by any means without the written permission of A&D Company Ltd.
The contents of this manual and the specifications of the instrument covered by this manual are subject to
change for improvement without notice.
The Bluetooth word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of
such marks by A&D is under license.
WARNING
Repairs
Do not disassemble the device. Contact your local A&D dealer if your device needs service or repair.
Troubleshooting
If a problem has occurred and you cannot clear it, stop using the device, place a notice on the device and
request service from the store where you purchased the device or from your local A&D dealer.
CAUTION
Conditions for use and Ambient Temperature
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□ The device is a precision instrument. Avoid installing the device in direct sunlight, excessive dust, high
humidity, high temperature, large temperature fluctuations or magnetic fields, which may cause problems
or malfunctions.
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□ Use the device range of the -10°C to 40°C, with less than 85% R.H.
Operation
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□ Avoid mechanical shock to the device. That could cause damage.
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□ The device is not waterproof type. Water invading into the device may cause damage.
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□ If the device is not to be used for a long period of time, remove all batteries from the battery compartment
to avoid battery leakage.
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□ Do not mix batteries made by different manufactures, or mix old and new batteries.
Replace all of the batteries at one time.

1. Compliance
1.1. Compliance with FCC Rules
This device contains transmitter module FCC ID : RYYEYSHCN
This device complies with Part 15 of the FCC rules. Operation is subject to the following two
conditions :
(1) this device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation. (FCC =
Federal Communications Commission in the U.S.A.)
FCC warning
Changes or modification not expressly approved by the party responsible for compliance could
void the user’s authority to operate the equipment.
Note :
This equipment has been tested and found to comply with the limits for a class A digital device,
pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is likely
to cause harmful interference in which case the user will be required to correct the interference
at his / her own expense.
1.2. IC
IC RADIATION EXPOSURE STATEMENT FOR CANADA
This device complies with Industry Canada license-exempt RSS standards. Operation is
subject to the following two conditions : (1) this device may not cause interference, and (2)
this device must accept any interference, including interference that may cause undesired
operation of the device. This device contains transmitter module IC : 4389B-EYSHCN

2 . Outline and Features
The AD-8931 is an external display that performs wireless communication with A&D weighing
instruments.
Please read this manual thoroughly before using and use this device correctly after
understanding the contents.
 Streamed weighing data from the weighing device is displayed.
 The power supply can use four "AAA" batteries (R03 / LR03) (sold separately) or USB
power supply.
 Pairing with a weighing device is required to start communication (refer to "6.1.
Bluetooth Paring".)
 The display can be angled using the stands on its back side.
 The display can be hung on a wall by the wall-mount hole on its back side.
3 . Unpacking
Check whether all of the following items are included:
Main unit Instruction manual

4 . Names
Front view Back view
Display
Battery indicator
The battery indicator changes as the battery capacity decrease
as shown below:
Stable indicator
Displaying weighing data：Turns on when the measurement
value is stable.
Internal Settings: Indicates the current setting.
BT indicator
Indicates the connection with the measuring instrument.
Blinking: Indicates during pairing.
Turn on: Connected to the measuring instrument.
Turn off: The instrument is not connected to the measuring
instrument.
Weighing unit Turn on : Except for the displayable weighing unit .
Key operation
ON/OFF key Turning the power ON/OFF
SET key
Press and hold (for about 3 seconds) to go to pairing mode.
If the connection is disconnected, press the switch once. Attempt to
connect again.
SET + ON/OFF key Enter the internal setting mode.（Refer to "7. Function"）
ON/OFF key
SET key
Stand
Display Wall-mount hole
Battery cover
Serial number
USB (Micro-B)
Battery indicator
Stable indicator
Polarity
BT indicator
Weighing unit

5 . Preparation
5.1. Installing or Replacing Batteries
CAUTION
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Batteries are not included. Please purchase them separately.
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Insert the batteries in the correct polarity (+/-) as shown the battery compartment.
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Replace all four batteries at the same time.
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Be sure to install the battery cover when using the product.
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Do not mix different types of batteries and new and old batteries.
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Battery life depends on operating conditions and ambient temperature.
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Remove the battery if it is not used for a long period of time or if it is used only for USB power supply.
1. Remove the battery cover.
2. Remove all old batteries.
3. Note the polarity of the four new AAA batteries when inserting them.
4. Install the battery cover.
5.2. USB Power Supply
Connect the USB cable to the USB (Micro-B) terminal on the side of the main unit.
CAUTION
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The USB cable is not included.
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Data transfer from the USB terminal is not possible.
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□ Operation is not guaranteed with of all power supply units.
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Check the specifications of the power supply unit.
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Do not connect to a device other than a power supply. Connecting to other devices may cause damage.
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When connecting a USB cable, check the direction of the connection and insert it straight.
5.3. Precautions for Use
CAUTION
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The stands should be extender fully or not at all.
Do not use the product with the stands halfway out.
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Be sure to extend both stands when standing the device.
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Prevent foreign matter such as liquid or metal from getting into the body.
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Do not handle the product with wet hands.
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Do not press the keys with hard or sharp objects.
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Do not install or store the product in an unstable location.
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Be careful that the product does not fall or is impacted.
5V±0.5V / 50mA
USB
(
Micro B
)
Terminal
Approximately 20°
Stand

6 . How To Operate
6.1. Bluetooth Paring
CAUTION
To start communication, pairing between the product and the measuring instrument is necessary.
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One compatible weighing unit can be connected to one unit of this product.
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When pairing, turn off the power supply of devices othre than the measuring instrument to be paired.
1. Turn on the measuring instrument to be paired.
2. Press the ON/OFF key of this product to turn on the power.
3. After all the segments turn on, ------- is displayed.
4. Press and hold SET key (for approximately 3 seconds)
until the BT indicator (upper right of the display) starts flashing.
5. The BT indicator flashes, and pairing starts.
6. When pairing is completed, the BT indicator lights up.
If the measuring device is not found (if the BT indicator does not light up),
the power turned off after about 1 minute. Repeat from step 1.
7. The product is connected to the measuring device.
If the measuring device's power is disconnected or the connection is lost for some reason,
the BT indicator turns off.
8. The received measurement data is displayed. (Refer to "6.2. Display" )
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If the BT indicator does not light up, turn off the power of the product and the measuring device
once, and then repeat the above procedure again.
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After pairing, the paired measuring device is detected and automatically connected, it is not
necessary to perform the connection operation each time.
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In the following cases, perform pairing again.
・When connection to the measuring device becomes impossible.
・You do not know what device the product is paired with.
・To communicate with another measuring device.
SET
Press and hold (Approx. 3 seconds)
Blinking BT indicator
ON/OFF
BT indicator turn on
(Connected status)

6.2. Display
Set the data output mode of the measuring instrument to stream mode.
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Refer to the operation instruction manual of the measuring device for how to change the data
output mode of the measuring instrument.
1. Turn on the paired measuring device
If pairing has not been performed, perform pairing. (Refer to "6.1 Bluetooth Pairing" )
2. Press the ON/OFF key of this product to turn on the power.
3. After all the segments turn on, ------- is displayed.
If the device paired with is not found,
the power turns off after approximately 1 minute.
4. Confirm that the BT indicator (upper right of the display) lights up.
If the BT indicator does not light up, turn off the product and the
measuring instrument and turn them on again.
5. Displays the received measurement data.
If the measuring device's power is disconnected or the
connection is lost for some reason, ------- is
displayed, and the BT indicator turns off.
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If the measurement data is not received, ------- is displayed.
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If the display does not change from ------- while the connection mark is lit,
check that the data output mode of the measuring instrument is stream mode.
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When the measurement range is exceeded, eor -e is displayed.
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When the auto power-off function is activated when operating by batteries, the power turns off when
the stable indicator is on and no operation is performed for approximately 5 minutes.
(Refer to "7. Function")
BT indicator turn on
(Connected status)
ON/OFF

7. Function
7.1. Entering the Function Settings
1. Turn off the power with the ON/OFF key.
2. Press and hold the SET key, and then press the ON/OFF key,
key to display p -X.XX .
3. Release the keys.
4. Press the SET key to advance to the internal setting item and
display poff * .
7.2. Parameter Setting Procedure
SET key Switches the function setting items.
ON/OFF key Changes the set value of the function setting item.
ON/OFF key press and hold Turn off the power.
Function setting items Setting
value Description
poff 0
Deactivated This is a function to turn off the power automatically
when approximately 5 minutes elapse while the stable
indicator is lit and there is no key operation.
Auto power off function ◆1 Activated
l-it 0
Always ON If set to Auto, the backlight turns off after approximately
3 seconds elapse from the stable indicator lighting up.
The backlight is always lit in function setting mode.
Backlight operation 1 Always OFF
◆2 Auto
Clrf Returns the function settings to factory default
Initialize
◆：Factory default
When each function setting item is displayed, it is possible to change the individual setting values
each setting value by pressing the ON/OFF key.
The setting value displayed when "○" is lit is the currently stored setting value.
To store the change in the of setting value
After changing the setting value ("○" turns off), press the SET key.
After end displays, the function setting item change is applied.
To end the function setting operation
Press and hold ON/OFF key. The power turns off.
How to initialize setting value
In the Clrfno display, press the ON/OFF key to display Clrfgo .
Press the SET key to return the function setting to the factory default after end displays.
Turn off the power
and press
Setting items
Setting value
ON / OFF
X.XX
SET
SET
Press and hold

8. Before Requesting Repair or Service
8.1. Check when a Malfunction is Suspected
State Response
No display ・Check the battery or USB power supply.
・Check the connection of the USB plug.
BT indicator does not light. ・Confirm that the measuring instrument supports wireless
communications.
・Confirm that you have paired with the measuring device.
(Refer to "6.1. Bluetooth Pairing" )
The measurement value is
not displayed.
------- displayed.
Measurement values do
not change.
・Confirm that the BT indicator is lit.
・ Check the distance from the measuring instrument (maximum 10 m).
・Check the data output mode of the measuring instrument (stream
mode).
E lb0 displayed. ・The batteries are depleted. Replace with four new batteries.
E lb1 ,E Hb1
displayed.
・Supply appropriate power by USB.
8.2. Error Code Table
Turn off the power and turn it on again when the following error is displayed.
If the error cannot be resolved, contact the nearest dealer.
Display Content
error 1 Connection error with communication module
error 2 Memory (storage circuit) has failed.
9. Specification
Compatible
communication devices A&D weighing instruments equipped with Bluetooth #1
Display 7 segment LCD with backlight (Character height 26 mm)
Display update Approximately 10 times per second
#
2
Weighing unit
g(Gram), kg(Kilogram), pcs(Counting), lb(Pound), oz(Ounce),
ozt(Troy ounce), tl(Tael), t(Tola), N(Newton)
In the case of weighing units other than the above displayed.
Ambient operating
temperature and humidity –10 to 40 °C, Less than 85 %RH (No condensation)
Power supply 4 x "AAA" batteries (R03 / LR03) or AC adapter (5 V / 50 mA)
Battery life #3
Approx. 200 hours (When using at 25°C、with backlight always off and
using alkaline batteries)
Approx. 100 hours (When using at 25°C、with backlight always on and
using alkaline batteries)
Communication range Up to 10 m
Wireless communication EYSHCNZXZ (TAIYO YUDEN CO., LTD.)
Bluetooth 4.2 (Bluetooth Low Energy)
Dimensions 160 (W) x 74 (D) x 25 (H) mm
Mass Approx. 160 g (Excluding batteries)
Accessories Instruction manual
#1 Refer to the A&D website concerning applicable instruments equipped with Bluetooth.
#2 When the weighing device side transmits weighing data at 10 times/second.
#3 The battery life differs depending on manufacturer, usage and storage conditions.

10. Bluetooth Communication
The effective range of Bluetooth communication is 10 m or less in an unobstructed space.
If there is an obstacle such as a wall between Bluetooth devices, the range of communication will be
shorter. Interference may be caused near the following devices that use the 2.4 GHz frequency band,
which is the same as for Bluetooth. Therefore, this device is not suited for uses that require
reliability.
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□ Wireless LAN
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□ Bluetooth devices (such as mobile phones)
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□ Home appliances such as microwave ovens

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