The TX quad cal section of the ad9361 reference manual (ug570) states that the cal procedure should be performed again if device temperature changes "dramatically." I have a couple questions:
1) Should the NCO phase offsets used have any temperature dependence? Or could the same phase offsets values to refresh the cal results if the sample rate, TX FIR/HB filters, and analog filter settings stay the same? I'm following up here from ad9361 repeated tx quad cal with sample rate & BW changes.
2) Would you expect that temperature thresholds for refreshing cal results are the same across individual transceivers/dies?
3) If the answer to (2) is yes: is there a temperature threshold that has some testing behind it for some X dBc?