You start by taking some LabVIEW tutorials and getting comfortable with understanding what is on a block diagram and using basic debug ptions such as the probe tool. My explanation should make more sense than.
I'll try to look at the LabVIEW driver in the next couple of days but you are the one with the actual instrument.
The first thing done is a call to 370A Setup Management.vi which is configured to do a check id. This issues a ID? command and the response must be contain the string 370A or 371A. You can simply do the same query in MAX. Right click on the instrument and select Communicate With Instrument. You could also open the VI and run it. There is a string indicator that will display the response.
Showing an image of the subVi's block diagram does not do any good at all. Set the GPIB address, set the action to 'Check ID' and RUN that VI! See what the response is. Take an image of the front panel after it has run.
