Important changes to forums and questions
All forums and questions are now archived. To start a new conversation or read the latest updates go to forums.mbed.com.
5 years, 12 months ago.
The Tx power is not correspond to the Uart command
I connect my board with the RF cable to the SA. After follow the instructions for transmitter test. I saw the power is abnormal. Is there any specific set up I need to do?
5 years, 11 months ago.
If you are testing at 915MHz, you should have your SMA cable on the ANT_HF connector. Such a low power level would suggest you are on ANT_LF. You should use a 20dB attenuator on spectrum analyzer for safety.
When you use the command "op 20" you should see "+20dBm PADAC bias". You can verify +20dBm TX bias by reading register 0x4d, ie "r 4d"