I config DAC38RF89 as fallowing.
I-channel is path AB of DAC A,Q-channel is path AB of DAC B. The phase of NCO of DAC A is set to 0 degrees, and the phase of NCO of DAC B is set to 90 degrees.
When we measure the two NCO's signal phase, the different of phase of the NCOs is not constant 90 degrees. The different of phase is not the same every time after I config the frequence of NCO.
I want to know the reasons and how to sync the two NCOs?
