The proprietary %TXSELFCAL command performs TX calibration. nRF9131 v2.2.x
Device Under Test (DUT) RF output must be connected to a 50 Ω load or terminator when executing TX self-calibration.
Calibration command fills an internal gain compensation table on DUT. This table can be reset with the clear command. The test command executes the self-calibration routine but does not update the gain compensation table.
Gain compensation table must be updated to DUT flash memory with the %XFSSYNC command.
When permanently limiting the used bands
with %XBANDLOCK=3 and then performing TX self-calibration with
%TXSELFCAL=1, execute %XBANDLOCK=3 before
%TXSELFCAL=1. nRF9131