Hi,
I assume that your trying to program a VI that controls the instrument using the instrument driver you downloaded from the NI web. I ask because you say that you trying to build a driver.
Instrument drivers use VISA VIs to send the commands to the instrument. The instrument driver encapsulates the instrument specific commands that are being sent through the GPIB. The VIs present a high level interface with the specific intruments functionality.
If you're having problems with the communication (GPIB, VISA) I could probably help you out.
If the problem you're having is using the instrument driver, I'm afraid we don't have the documentation or the tools to help you. You're best bet is to read the instrument's user manual and try to relate the fun
ctionality of the device with the VIs in the instrument driver. The instrument's manual should have the list of commands it uses. If you open the VIs in the instrument driver you can see which commands are being sent.
DiegoF.
National Instruments.