I successfully implemented the reference design and the No-OS code using a Zedboard and the AD-FMCOMMS1-EBZ. Just to make sure that everything was working correctly, I hooked up the RF output to a spectrum analyzer. It seems that I am outputting a signal, and I've verified that I can change the frequency, but it doesn't look "clean" to me. Granted, I'm not an RF engineer or anything, but am I seeing harmonics or oscillations or something? I've attached a picture of my spectrum analyzer.
Thanks for any help or comments.