Jim and Dave

We returned the 18bit-DAC AI chassis to EX after reversing the internal ribbon cables. We verified it was working with DC offsets on PEM channels, and then connected the standard DB9 cable from chn6 (counting from zero) AI to chn28-31AA. We verified that the Duotone loop back the h1calex model was outputting on DAC ch6 is seen on the ADC ch28.

We went to EY and outputted a DC level on ch0 using the PEM model, we verified it was coming out of the AI on ch0 using a scope. No need to open up EY chassis.

We did note that the EX chassis has a vented lid, while EY has a solid lid.