Avantree BTDG-50 Manuel de l'utilisateur - Page 7

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Product Speci cations

・Bluetooth version: 4.1

・Bluetooth pro le: A2DP, HFP, HSP, AVRCP

・Audio codec: aptX-LL, aptX, Fast stream, SBC

・Operating range: Up to 20 meters in open area without any obstruction

・Product weight: approx. 10g

・Product size: 66(L) x 18mm(W) x 15mm(H)

Troubleshooting

1) Why is the Leaf not working / being recognized by my PC ?

・When the Leaf is plugged into a PC USB port, it should be recognized as a USB sound card/USB speaker. NO

BLUETOOTH icon will appear on the Taskbar. The pairing/connection via Bluetooth is between the Leaf and

your headphones/speaker, not the PC.

・After it's plugged in, you can nd the "Avantree Leaf" in Device manager and in the Playback settings.

・If you see an "unknown device" indicated in Device manager, please try to changing to another computer to

test.

2) Why am I getting such poor sound quality in CALL mode?

Reason: In CALL mode, the sound is a MONO, 16kHz bit rate signal (most Bluetooth devices on the market use

a lower 8kHz bit rate signal). When in MUSIC mode, the sound switches to STEREO signal with a 48kHz bit rate.

The higher bit rate of the STEREO signal means the sound quality in MUSIC mode is much better. Note that

most Bluetooth devices will not allow you to listen to music when talking or during a call e.g. a mobile phone,

computer, etc

Solution: Only the FastStream (FS) codec supports both music and high quality voice simultaneously. The Leaf

supports FS and the simultaneous quality voice and music feature if used with an FS compatible headphone

(e.g. the Avantree HS063, Avantree ANC032, ANC031). Alternatively the DG59 transmitter with headphones is

an FS set which can also address the poor sound quality issue and also supports simultaneous voice and

music while gaming.

3) Why is my microphone not working?

Reason: The Leaf isn't set to CALL mode

Solution: Ensure your Bluetooth headphones and Leaf are connected. Then DOUBLE CLICK the MFB to switch

the Leaf to CALL MODE. During call mode the LED will turn WHITE.

For Windows users, please check that the speaker and microphone audio settings are set to "default" in your

VOIP program and also in Windows' playback devices .