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AD9361 RSSI Calibration through Linux Drivers

Question asked by chadgentry on Oct 18, 2016
Latest reply on Oct 21, 2016 by chadgentry

I'm working on an AD9361 (FMCOMMS3 board) with Linux project, and I had a few question about the rssi when receiving signals.  

 

  1. Is the RSSI linear? i.e. If I increase the transmit power by 20 db, will I see a 20 db increase at RSSI?  What about 40?  From my tests it appears so but I wanted to double check.
  2. Is it possible to calibrate the RSSI through the Linux shell or libiio?
  3. What does the calibration generate? A table? Offset? Something else?
  4. Does calibration automatically save it to non-volatile memory?

 

Thanks,

Chad

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