I have created a design where i set the ADC and DAC sample clocks to be the same and I take the ADC input and reclock it to the DAC clock and then output it directly to the DAC, essentially a "passthru" mode. The goal is to show that I can take in an 802.11a signal at 2.4 GHz, downconvert to complex baseband and then send it back to 2.4 GHz through the TX path. Eventually, I am going to add some processing at complex baseband. What I have seen is I/Q imbalance and DC offset on the ADC side and then additional I/Q imbalance at the DAC output. The ADC I/Q imbalance and dc offset can be taken care of with the current code and i can validate that it works by using chipscope. Determining the DAC I/Q imbalance is a little more involved since I just see the RF output on a spectrum analyzer. Any thoughts on the best way to analyze the I/Q imbalance out of the DAC? I guess I need to pre-distort the output...???