Normal Test Procedure Description for JieLi (JL) Bluetooth Test Box

1. Enable various test functions based on actual requirements, configure the dip switch settings, and determine whether to test call frequency deviation.

2. The test box can connect to two devices simultaneously for testing. It is recommended to have at least four devices powered on and waiting for connection.

3. After connecting to a device:

- Display 1 shows the test status (music icon for song playback test, phone icon for call test).

- Display 2 shows the device name.

- Display 3 shows the device frequency deviation.

- Display 4 shows buttons for next/previous track, pause, and volume up/down.

4. After the song playback test is complete, press the device's pause button, then proceed to the call test. Speak into the device's microphone for the call test. Once completed, press the hang-up button to disconnect and search for the next device.