When you used PXIe-5663E to capture the IQ data , you maybe find one strange noise issue working on the IQ wave. For example , first you used VSG PXIe-5673 to generate one CW signal (CF:2.001GHz) , then you used example "RFSA Acquire Continuous IQ.vi" with PXIe-5663E to capture IQ data (CF:2GHz) ; But you saw there were noise signal on the IQ wave;
Where is the noise from ? How could you avoid the noise effect ?
1. Try to decrease the IQ Rate , you can see the noise is decreasing ;
2.Check the help document , found below information
Above mentioned that the dither signal enabled is default setting for PXIe-5663E and the dither signal will affect one the IQ result with higher IQ rate. 3.Change the property of Digitizer Dither Enable as Disable , then re-run the example code with higher IQ Rate;
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