Signal distortion ADC/DAC on Cyclone III dev kit

Here's the DAC output connected to an oscilloscope (see attachment). The blue signal is output from a function generator, 2 V p-p. The yellow is output from the ADC, 50mV p-p. As for the ADC into the board do you recommend using the SignalTap II logic analyzer to acquire data?

I'm using the Cyclone III DSP Development Kit with an HSMC card:

https://www.altera.com/products/boards_and_kits/dev-kits/altera/kit-cyc3-dsp.html

Here's info for the DAC: (TI DAC 5672)

http://www.ti.com/lit/ug/slau139b/slau139b.pdf

and ADC: (Analog Device AD9254)

www.analog.com/media/en/technical-documentation/data-sheets/ad9254.pdf

I'm working from 1 MHz to 75MHz (since the ADC sampling rate is 150Msps). The DAC/ADC are transformer-coupled, and looking physically on the HSMC card, these are the transformers with a frequency bandwidth of .004 to 300 MHz, which is plenty.

http://www.mcl-yokohama.co.jp/webdata/tt1-6-w38.pdf

I'll start reading through the EELive! slides and ESC paper.

Thanks!

Chris