RX calibration failure

Projects LimeSDR
1

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?

Screenshot%20from%202019-03-04%2012-02-46
Screenshot from 2019-03-04 12-02-46.png1366×768 120 KB

2

Could you share register ini file, please.

3

Hi Zack,

ini file link:

4

Hi @Zack,

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

5

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.