We are proceeding our job with your AD-FMCOMMS1-EBZ.
So we have the following questions.
We still cannot catch the reason why this trouble comin from.
We have inputed the AM modulated signal that is 400MHz carrier and 1MHz base band via 10dB / 20dB external attenuator to AD-FMCOMMS1.
So we enclose the scope pictures the spectrum analyzer ,the FFT and constellations of IIO-oscilloscope as follows.
The external spectrum analyzer show AM wave form when attenuator is 20dB.
But please advice us the reason why the IIO-oscilloscope(FFT spectrum) show like a DSB wave form spectrum and also the constellation close the DSB wave form.
And when the attenuator is 10dB, the FFT spectrum on IIO oscilloscope show AM wave form we think but the constellation have the much offsett. Why this comin?
Thanks a lot Kaos