i did a couple 2Ghz to 3.5Ghz sweeps with my mini using QspectrumAnalyzer.
both Tx and Rx are 50ohms terminated and i used device arguments of:
driver=lime,soapy=0
20msps
20mhz bandwidth
the rest of the info is in the pictures
pictures
each picture shows 0 gain and auto gain settings
i did that calibration with limesuite “calibrate all” and saved that as “Default.ini”
i loaded the calibrated “Default.ini” before i ran the “calibrated” sweep