Bluetooth Adapter
Specially designed for Bluetooth products and their automated testing, in addition to providing Bluetooth connection with the tested product, it also offers 2 analog audio input/output interfaces. With the help of an audio analyzer, it can perform Bluetooth audio (A2DP and HFP) indicator testing for the tested product, and support function testing such as up and down songs, addition and subtraction volume, battery level, pause and answer.
Communication protocol format
The PC sends to the Bluetooth box
|
The command type |
value |
|
Handshake (ACK) |
AT+ |
|
Command Message (MSG) |
MSG |
|
End command (Check) |
|
The Bluetooth box returns to the PC
|
Byte type |
value |
|
Command Message (MSG) |
MSG |
|
Returns full information |
:END |
|
End command (Check) |
|
Test the frame
The basic framework of A2DP and HFP testing is shown in the figure below


⦁ Name Simulate Bluetooth adapter Digital Bluetooth Adapter
⦁ Bluetooth Vhip CSR8675 CSR8675
⦁ Bluetooth Protocol Version Bluetooth V5.0 Bluetooth V5.0
⦁ Support Functions A2DP Source A2DP Source
HFP Audio Gateway HFP Audio Gateway
HFP Hands-Free HFP Hands-Free
HSP Audio Gateway HSP Audio Gateway
HSP Headset HSP Headset
AVRCP Controller AVRCP Controller
Serial Port Profile Serial Port Profile
⦁ Support Encoding & decoding SBC, aptX, aptX-LL, aptX-HD SBC, aptX, aptX-LL, aptX-HD
⦁ Frequency Response A2DP 20Hz-20kHz A2DP 20Hz-20kHz
HFP 20Hz-6.8kHz HFP 20Hz-6.8kHz
⦁ RF power 8dBm 8dBm
⦁ Receiver sensitivity (0.1% BER) -90dBm -90dBm
⦁ External Data Port Type BNC USB-B
⦁ Communication Port Type USB-B USB-B
⦁ RF Port Type SMA SMA
⦁ RF Port Impedance 50 Ω 50 Ω
⦁ Serial Communication Baud Rate 115200/9600 115200/9600
⦁ Transmission Distance 10米 10米
⦁ Size 154mm*84mm*28mm 154mm*84mm*28mm
⦁ Weight 317g 317g
⦁ Power Supply USB 5V USB 5V
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