I want to measure TX carrier frequency phase noise performance, how should i configure the BIST register? or what IQ data should BBP send out to the DAC IQ interface?
You can send DC at IQ interface to get max signal at LO.
i experiment that, when i send out IQ all zero data to DAC interface, the LO power is -54dBm, but i send +500K IQ range from +256 to -256, the LO power is -57dBm, the 3dB different is correct? why?
Instead of zeros send 1 and try again?
IQ data all zero, LO power is -54dBm;
IQ data all 1, LO power is -46dBm;
the LO leakage power increase about 8dB;
Are you using IIO?
If so please use 11.txt from example waveforms
no, i experiment in customer board;
is it DAC IQ zero data equal to a 500KHz single tone LO leakage power, can you explain Based on design principles?
or can you verify in the PLUTO board to help me?
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