Terasic ADA Daughter Card

Ok, I understand the DAC end. Thanks

As for the ADC end, I think I have to try to do it. So where on the board is the best place to put in the signal? At R4 (for ch. A)??

I am assuming that the signal should be at Vin+. Is this correct?

And you say that this signal need to have a 1.5V bias?? I think it should be possible to use an op amp but I it is also quite simple for me to add a 1.5V DC bias to my signal. Do you think this would work?? Have I misunderstood?

Thanks again for your invaluable help.