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AD-FMCOMM3 Transmit Spectrum

Question asked by Ed_V Employee on Mar 25, 2014
Latest reply on Jul 14, 2014 by mhennerich

I am using a ZC702 board controlling an AD-FMCOMM3-EBZ. The TX LO is programmed to 349MHz with a 50kHz single tone on I&Q using the one tone option . The spur levels increase as the"Scale" factor is increased. I am looking at the transmit output on a spectrum analyzer, see attached plots. Could you offer some insight into the function of the "Scale" tab? Are there filter options I'm missing which would improve the performance?   Target spur performance is greater than 60 dBc. Thanks, Ed