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AD9789 Spectrum Mirrored by fc

Question asked by ibotopal on Jan 22, 2014
Latest reply on Jan 28, 2014 by ibotopal

Hi,

 

When I input a sinus to the DAC, I see on the spectrum analyzer that  my tone is mirrored by the carrier frequency. Is this the expected behavior, e.g. NCO multiples the I path with sin(wt) and Q path with cos(wt)? If not, what might be my problem? And yes, I have checked the input connections.

 

Thank you in advance,

 

Ibrahim

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