Hi,
To use the DAQmx Create Virtual Channel.vi, your chassis needs to be verified under NI-DAQmx Devices. Once you have confirmed that
the chassis is present and configured under NI-DAQmx, the physical channels
input should self-populate with a list of available channels. Check the
filtering of the names if the physical channel string you are using
does not show up, you can do this by right clicking on the physical channels control and editing its properties.
I hope this extra bit of info helps!
Regards,
John McLaughlin
Academic Account Manager
National Instruments UK & Ireland