In built-in radio 1+1 mode, the Base uses the built-in radio to transmit differential signals to the Rover. Troubleshooting steps are as follows:

1) Verify that the Base is transmitting differential signals properly by observing whether the signal light on the Base is flashing normally. If the Base is not transmitting differential signals, reconfigure the base station.

2) Verify that both the Base and Rover are equipped with radio antennas (the radio antenna is approximately 30 cm long and flexible).

3) Verify that the rover’s radio protocol and channel settings match those of the base station. Only when these settings are consistent can differential transmission be performed. The Hi-Target 19200 radio protocol is recommended.