RX calibration failure

Hi everyone!

I have problems with the calibration routine in a LimeSDR board. I want to measure phase difference between RX channels in a range of frequencies, I am using TDD mode for this setup.
For some frequencies I get the message “Rx calibration: MCU error 3 (SXR tune failed)”.

What is the problem with the calibration rutine for this frequencies and how it can be solved?

Could you share register ini file, please.

Hi Zack,

ini file link:

Hi @Zack,

This kind of problems are caused by a wrong ini file (bad configuration)?
Or is it related to the calibration rutine?

Some kind of unwanted signal/interference at that frequency skews loopback measurements during calibration. Just started looking into this, don’t know the reason yet.