Báo cáo thử nghiệm HFP mô -đun âm thanh dài

Long range audio module Test Environment:

Sunny; No obstacles around; Straight road; Product is 1.5m above the ground.

Test preparation:909 Master +909 Nô lệ

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  1. Prepare two BT909 modules, firmware version: VER=FSC-BT909, V3.2.6, 20181105.
  2. Solder the two BT909s to the daughter board and prepare two sets of FSC-TL001 development boards with Codec.
  3. Install two BT909s on the FSC-TL001 development board and power them separately with two computers.
  4. Send AT command to change the mode of two BT909 modules:

        Master mode command: AT+PROFILE=19

        Slave mode command: AT+PROFILE=1707

Connection steps: 

1. Use the serial port tool to query the MAC address code of the slave module.
Command: AT+ADDR

2. Master module connect to the slave module via the serial port tool.
XXXXXXXXXXXX represents the twelve-bit slave MAC address.
AT command of connecting to the slave module: AT+HFPCONN=XXXXXXXXXXXX

3. After successful connection, master module send audio command to slave module via serial port tool.
Command: AT+HFPAUDIO=1

Test steps:

  1. Plug the headphone or speaker into the SPK2 interface of the two development boards FSC-TL001.
  2. Sound can be heard from headphone or speaker of the master FSC-TL001 development board when speaking at MIC of slave FSC-TL001 development board.
  3. Sound can be heard from headphone or speaker of the slave FSC-TL001 development board when speaking at MIC of master FSC-TL001 development board.
  4. Fix one of the two devices, move another, keep talking, ensure the sound quality is clear, no noise, the farthest distance without transposition

Test result:

The longest distance is 90m, if out of the range, the sound will be noise, trembling, intermittent and other issues.
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