Weifang Goertek Electronics Co. Ltd GBDU99 User Manual

IMPORTANT SAFETY INSTRUCTIONS

Note: Please read this information before you use the Bluetooth adapter. 

1. Read instructions

All safety and operating instructions should be read before the 
appliance is operated.

2. Retain instructions

The safety and operating instructions should be retained in a 
secure place for future reference.

3. Heed warnings

All warnings on the device and in the operating instructions 
should be observed.

4. Follow instructions

All operating and use instructions should be followed.

5. Water and moisture

The device should not be used near water (bathtub, kitchen sink, 
laundry tub, pool, etc.).

6. Heat

The device should be situated away from heat sources such as 
radiators, heat registers, stoves, or other device (including 
amplifiers) which produce heat.

7. Power sources

The device should be connected to a power supply only of the 
type described in the operating instructions or as marked on the 
adapter.

IMPORTANT SAFETY INSTRUCTIONS

NOTE: Most modern electronic devices are susceptible to EMI if 
inadequately shielded, designed, or otherwise configured for electromag-

Aircraft
Turn off the device when on board an aircraft. The use of this 
device might interfere with the telecommunication system of an 
aircraft.

Medical Instruments
If you use a medical device, such as a pacemaker, consult the 
manufacturer of your medical device to determine if it is 
adequately shielded from electromagnetic interference. Your 
physician might assist you in obtaining this information.

BEFORE YOU BEGIN

Before using this product, please take a moment to familiarize 
yourself with the new GBDU99-Bluetooth adapter. GBDU99 is a 
plug and play Bluetooth USB adapter that can be used in stereo 
(A2DP) and voice (HSP) modes. The GBDU99 complies with 
Class 1 output power, which provides up to 100 meters (330 feet) 
of range. With the GBDU99 and a PC, you can enjoy wireless 
music entertainment and VOIP calls at a flip of a switch.

IMPORTANT SAFETY INSTRUCTIONS

8. Cleaning

The device should be cleaned with a dry cloth.

9. Objects and liquids entry

Care should be taken so that objects do not fall and liquids are 
not spilled into the device’s openings.

10. Servicing

The user should not attempt to service the device beyond that 
described in the user's operating instructions. All other servicing 
should be referred to qualified service professional.

11. Placement

When not in use, keep your device in a safe place where it will 
not be bent or crushed.

12. Children

Keep this device away from children. Some small and detach-
able parts might be swallowed by children and result in harm to 
them.

13. Repair or Service

Changes or modifications not expressly approved by the party 
responsible for compliance could void the user’s authority to 
operate the equipment. 

14. About Electromagnetic Interference (EMI)

Electronics Devices

To avoid electromagnetic interference, please turn off the device 
in any place where posted notices instruct you to do so.

Bluetooth Version
Supported Bluetooth Profile
Chipset

Working Range

Dimension

Weight
Storage temperature
Working temperature

Items

Bluetooth V2.0
A2DP HSP
CSR BC03MM

Bluetooth standard class1 
(100 meters)

51 * 18 * 7 mm 
(length × width × height)

10 g
-20 °C-60 °C No part mangled
-20 °C-60 °C Work natural

Description

INDICATOR LIGHTS

TROUBLESHOOTING

1. A device available for pairing cannot be connected.

Make sure the device is within the working range, and in pairing 
status, then try again.

Note: A Bluetooth device can only be found in “visible” mode by other 
Bluetooth devices.

2. My adapter worked before but now it’s not working.  

Make sure your Bluetooth device is on and the Bluetooth feature 
is turned on in you Bluetooth device. If the Bluetooth feature was 
turned off or was turned on only temporarily, you may need to 
restart the Bluetooth feature and pair your Bluetooth device with 
the adapter again.

GBDU99 Status

Power On

Blue for 5 s

Standby 
(no device connection)

Steady Red

Online 
(audio device connection)

Flash 0.5 s blue every 2 s 

Power off

No indication

Discoverable

Flash 0.5 s blue and 0.5 s red 
continuously

Unsuccessful pairing

Flash red 0.2 s then off for 5 s

Successful pairing

Flash blue 0.2 s then off for 5 s

LED Indication

GBDU99

GBDU99

GBDU99

BEFORE YOU BEGIN

Identifying parts

OS REQUIREMENTS

GBDU99 supports the following systems:

1. Windows 2000
2. Windows XP
3. Windows 98se (edition 2)
4. Windows me

GBDU99 can realize its basic functions similarly in any operation 
system above.

1. Music/Voice Switch
3. LED indicator

2. Pair/Connect Button
4. USB connector

4

1

3

2

GETTING STARTED

Pairing with a new Bluetooth device

1. Pairing a Bluetooth headset

Switch the GBDU99 to Voice Mode. Select pairing mode by holding the 
Pair/Connect Button for 3 seconds or until the LED begins to flash red and 
blue. (

If you are using the GBDU99 for the first time, it will 

automatically enter pairing mode.)

Now place your headset in pairing mode according to its user instructions. 
Once paired, the GBDU99 will flash blue. If there was an error, it will flash 
red and you should repeat the pairing instructions.

2. Pairing Bluetooth headphones or speakers

Switch the GBDU99 to Music Mode. Select pairing mode by holding the 
Pair/Connect Button for 3 seconds or until the LED begins to flash red and 
blue. (

If you are using the GBDU99 for the first time, it will 

automatically enter pairing mode.)

Now place your headphones or speakers in pairing mode according to its 
user instructions. Once paired, the GBDU99 will flash blue. If there was an 
error, it will flash red and you should repeat the pairing instructions.

GETTING STARTED

Plug GBDU99 into USB-enabled device

The GBDU99 is a plug and play Bluetooth audio device. There is no need to 
load software onto your PC and the GBDU99 will not interfere if your PC 
already has Bluetooth.
 
To get started, plug the GBDU99 into an unused USB port.

1. If it is the first time you have used the GBDU99, the adapter will automati-
cally enter pairing mode and the LED indicator will flash red and blue. The 
GBDU99 will stay in this mode until a device is paired. See "Pairing with a 
new Bluetooth Device" in the next section. You must pair a Bluetooth 
headset while the GBDU99 is switched to Voice Mode in order to make 
VOIP calls. You can pair Bluetooth headphones or speakers while the 
GBDU99 is switched to Music Mode to enjoy wireless music.

2. If you have already paired a device, the adapter will search for the last 
four devices it was connected to. It is best that you turn on your headset or 
headphones before connecting the GBDU99 to your PC. If the GBDU99 
does not locate your headset or headphones, it will enter Standby Mode. If 
you cannot connect your previous device, go through the pairing 
instructions.

USB Interface

GETTING STARTED

Option for music function or voice function

Slide the Music/Voice Switch at the different position for the 
different feature.

Voice mode: 

USB communication interface is selected. Adapter disconnects 
from any previous A2DP device if necessary and then GBDU99 
enters discoverable state if no paired devices in memory, 
otherwise searches for last HSP device.

Music mode: 

USB audio interface is selected. Adapter disconnects from any 
previous HSP device if necessary and then GBDU99 enters 
discoverable state if no paired devices in memory, otherwise 
searches for last A2DP device.

Active connection with a disconnected Bluetooth device

If the Bluetooth device is disconnected from GBDU99, you can 
press the Pair/Connect Button less than 3 seconds to connect 
the last device actively, which is fit for both Music mode and 
Voice mode.   

Voice mode

Music mode

FCC RF Radiation Exposure Statement

15.105 (b)

This equipment has been tested and found to comply with the 
limits for a Class B digital device, pursuant to part 15 of the FCC 
rules. These limits are designed to provide reasonable protection 
against harmful interference in a residential installation. This 
equipment generates, uses and can radiate radio frequency 
energy and, if not installed and used in accordance with the 
instructions, may cause harmful interference to radio communi-
cations. However, there is no guarantee that interference will not 
occur in a particular installation. If this equipment does cause 
harmful interference to radio or television reception, which can 
be determined by turning the equipment off and on, the user is 
encouraged to try to correct the interference by one or more of 
the following measures:

- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from 
  that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.

FCC RF Radiation Exposure Statement

Operation is subject to the following two conditions:

(1) this device may not cause interference and
(2) this device must accept any interference, including interfer-
ence that may cause undesired operation of the device.

FCC RF Radiation Exposure Statement:

This equipment complies with FCC radiation exposure limits set 
forth for an uncontrolled environment. End users must follow the 
specific operating instructions for satisfying RF exposure 
compliance. This transmitter must not be co-located or operating 
in conjunction with any other antenna or transmitter. 

SUPPORT

If you need further help, please contact us:
GoerTek Electronics
Global Location:
● Qingdao ● Taiwan ● USA ● Hong Kong ● Shenzhen
http: //www. goertek. com
e-mail: service@goertek. com
Customer Service Hotline: 

86-532-88999318

PRODUCT SPECIFICATION

FCC RF Radiation Exposure Statement

Federal Communications Commission (FCC) Statement

15.21

You are cautioned that changes or modifications not expressly 
approved by the part responsible for compliance could void the 
user's authority to operate the equipment.