A&D AD-8931 User manual

AD-8931
1WMPD4003853A

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:
A potentially hazardous situation which, if not avoided, could result in
death or serious injury.
A potentially hazardous situation which, if not avoided, may result in
minor or moderate injury.
This is a hazard alert mark.
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.
Conditions for use and Ambient Temperature
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.
Use the device range of the -10°C to 40°C, with less than 85% R.H.
Operation
Avoid mechanical shock to the device. That could cause damage.
The device is not waterproof type. Water invading into the device may cause damage.
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.
Do not mix batteries made by different manufactures, or mix old and new batteries.
Replace all of the batteries at one time.
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.
© 2019 A&D Company Ltd.

3
CONTENTS
1. Compliance ......................................................................................................4
1.1. Compliance with FCC Rules .............................................................................................. 4
1.2. IC .......................................................................................................................................... 4
2. Outline and Features........................................................................................5
3. Unpacking ........................................................................................................5
4. Names .............................................................................................................6
5. Preparation ......................................................................................................7
5.1. Installing or Replacing Batteries......................................................................................... 7
5.2. USB Power Supply ............................................................................................................. 7
5.3. Precautions for Use............................................................................................................. 7
6. How to Operate................................................................................................8
6.1. Bluetooth®Pairing ............................................................................................................... 8
6.2. Display ................................................................................................................................. 9
7. Function .........................................................................................................10
7.1. Entering the Function Settings ......................................................................................... 10
7.2. Parameter Setting Procedure........................................................................................... 10
8. Before Requesting Repair or Service ............................................................. 11
8.1. Check when a Malfunction is Suspected ........................................................................ 11
8.2. Error Code Table ............................................................................................................... 11
9. Specification...................................................................................................12
10. Bluetooth Communication ..............................................................................13

4
1. Compliance
1.1. Compliance with FCC Rules
This device contains transmitter module FCC ID: 2A6NFEC2832
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 Caution
Changes or modifications not expressly approved by the party responsible for compliance could
void the user’s authority to operate the equipment.
The antenna used for this transmitter must not be co-located or operating in conjunction with
any other antenna or transmitter.
This product is certified as type of the portable device with FCC Rules. To maintain compliance
with RF Exposure requirement, please use within specification of this product.
Note :
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 digital
devices pursuant to Part 15 of FCC rules.
These rules are designed to provide reasonable protection against interference when
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 expense, whatever measures are necessary to eliminate the interference.
(FCC = Federal Communications Commission in the U.S.A.)
1.2. IC
IC RADIATION EXPOSURE STATEMENT FOR CANADA
This device contains transmitter module IC: 28568-EC2832
This device complies with Innovation, Science and Economic Development Canada license-
exempt RSS standards. Operation is subject to the following two conditions:
(1) This device may not cause interference.
(2) This device must accept any interference, including interference that may cause undesired
operation of the device.
Le présent appareil est conforme aux CNR Innovation, Sciences et Développement économique
Canada applicables auxappareils radio exempts de licence. L’exploitation est autorisée aux deux
conditions suivantes:
(1) l’appareil ne doit pas produire de brouillage;
(2) l’utilisateur de l’appareil doit accepter tout brouillage radioélectrique subi, même si le
brouillage est susceptible d’en compromettre le fonctionnement.

5
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®
Pairing".)
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

6
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".)
Stable indicator
BT indicator
Weighing unit
Battery indicator
Polarity
Display Wall-mount hole
Battery cover
Stand
USB (Micro-B)
Serial number
ON/OFF key
SET key

7
5. Preparation
5.1. Installing or Replacing Batteries
Batteries are not included. Please purchase them separately.
Insert the batteries in the correct polarity (+/-) as shown the battery compartment.
Replace all four batteries at the same time.
Be sure to install the battery cover when using the product.
Do not mix different types of batteries and new and old batteries.
Battery life depends on operating conditions and ambient temperature.
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.
The USB cable is not included.
Data transfer from the USB terminal is not possible.
Operation is not guaranteed with of all power supply units.
Check the specifications of the power supply unit.
Do not connect to a device other than a power supply.
Connecting to other devices may cause damage.
When connecting a USB cable, check the direction of the connection and insert it straight.
5.3. Precautions for Use
The stands should be extender fully or not at all.
Do not use the product with the stands halfway out.
Be sure to extend both stands when standing the device.
Prevent foreign matter such as liquid or metal from
getting into the body.
Do not handle the product with wet hands.
Do not press the keys with hard or sharp objects.
Do not install or store the product in an
unstable location.
Be careful that the product does not fall or
is impacted.
5V
±
0.5V
/
50mA
USB (Micro-B) terminal
Approximately 20
º
Stand

8
6. How to Operate
6.1. Bluetooth®Pairing
To start communication, pairing between the product and the measuring instrument is necessary.
One compatible weighing unit can be connected to one unit of this product.
When pairing, turn off the power supply of devices other 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".)
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.
After pairing, the paired measuring device is detected and automatically connected, it is not
necessary to perform the connection operation each time.
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.
Press and hold
(Approx. 3 seconds)
The BT indicator flashes
The BT indicator lights up
(Pairing is completed)

9
6.2. Display
Set the data output mode of the measuring instrument to stream mode.
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.
If the measurement data is not received, is displayed.
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.
When the measurement range is exceeded, or is displayed.
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".)
The BT indicator lights up
(Pairing is completed)
The measurement data
is displayed

10
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 to display X.XX .
3.
Release the keys.
4.
Press the SET key to advance to the internal
setting item and display *.
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
Auto power off function
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.

Activated
Backlight operation
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.
Always OFF

Auto
Initialize Returns the function settings to factory default
: 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 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 display, press the ON/OFF key to display . Press the SET
key to return the function setting to the factory default after displays.
Turn off the power
Press and hold
and press
Setting items
Setting value

11
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).
displayed. The batteries are depleted. Replace with four new batteries.
, 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
Connection error with communication module
Memory (storage circuit) has failed.

12
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 (Tae l), 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
Bluetooth 5.0 (Bluetooth Low Energy)
Dimensions
160 (W) x 74 (D) x 25 (H) mm
Mass
Approximately 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.

13
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.
Wireless LAN
Bluetooth devices (such as mobile phones)
Home appliances such as microwave ovens

14
MEMO

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Back cover: A&D Global
A&D Company, Limited
3-23-14 Higashi-Ikebukuro, Toshima-ku, Tokyo 170-0013,JAPAN
Telephone: [81] (3) 5391-6132 Fax: [81] (3) 5391-1566
A&D ENGINEERING, INC.
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Tel: [1] [phone]
Weighing Support :[1] [phone] Inspection Support :[1] [phone]
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