how to output a calculated signal using DAQmx

[FaisalF]

It seems to me that I am doing somthing wrong or missing somthing here.

The creat channel VI supposed to be set to "AI Voltage"?

the channels that I am using in my device are ai2 and ai3. and I am inputing it as a string into the DAQmx Creat channel VI (I have analog inputs from 0 to 15).

I should set the input terminal configurtation to "Differential"

Are these settings right?

How can I create another channel to output this difference (lets say cahnnel AO 1)?

I am really sorry for my basic questions but I am trying to learn and I really appreciate your efforts

Thanks

[mikeporter]

When you create a differential channel you have one channel number - like AI3.

Now when you look at how to wire channel 3 when it is configured for differential node, you see that you will use the terminal normally associated with channel 3 as one of the connections (typically the positive) and a terminal that is normally associated with another channel (probably channel 7 - the manual will tell you) as the other connection. These are the places where you make your connection, but you will be reading only one channel - AI3.

I'm not aware of routing an analog signal automatically, so you would need to read the differential channel and write the analog output in code.

Mike...