I am working on ad9361 fmcomms3,when i set the DDS code finction with no os driver as below(figure1.) ,the frenquency is 5M,but i don't see the sine wave on spectrum analyzer, it looks like distortion on time domain(figure2).
If i set frenquency at 1M (figure3) , i can see sine wave on spectrum.(figure4)
Please kindly get back to me asap, thanks.