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I/Q Imbalance adjustment of DAC AD9787 to minimizing sideband frequency after modulation

Category: Datasheet/Specs
Product Number: AD9787 and ADRF6755
Software Version: NA


In the datasheet of AD9787, it is described that adjusting I/Q phase offset to minimize sideband frequency, but I had a difficulty to see any improvement after adjusting I/Q phase from ACE.

I could eliminate LO leakage pretty well monitoring signal from ADRF6755 modulation after adjustment of AUX DAC values and polarization in ACE, but the sideband component seems no any improvement by tuning 'phase', as shown in following capture.

Any recommandation? Thanks