How to measure RF Tx Power of the transmitter

[RameshS]

Hi, We are using nRF52833 in our lighting product application. As per the datasheet of nRF52833, Tx Power is variable from -40dbm to +8dbm. In our application, we are setting up a radio transmitter of nRF52833 transmit to transmit at +8dbm output power. We want to measure the transmitter is really transmitting at +8dbm. Is there a way either by hardware tools or software tools to measure the output power.

[Bendik Heiskel]

Hi,

To accurately measure the TX power a spectrum analyzer is needed. The power can be measure either radiated or conducted. The radiated measurement need a reference antenna for the spectrum analyzer, and will most likely not be very accurate without a shielded test environment. The best and easiest solution is to do the measurements conducted, with either a test connector(if one is present on the board) or with coaxial cable soldered to the transmission line.

 

Best regards,

Bendik

[RameshS]

Hi Bendik,

Thank you for your support. As per the datasheet of nRF52833, Tx Power is variable from -40dbm to +8dbm. Nordic must have verified this and Nordic may be having the test results. Can you please share the test results.