I think I may have generate some confusion by putting quotes around
actually. I was not meaning to stress the idea of obtaining the exact
value but more the idea of obtaining the last value that was actually
written to the line. When performing AO, you typically fill an output
buffer with the AO values. If these values were all the same, I would
go ahead and assume that the DAC put out exactly what I asked for. If
you are outputting a dynamic signal, at any given instant, how do you
know which output value was last output by the DAC? For this question,
I think the easiest answer is to measure the output value with an
input channel.

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