Communicating with the HP 3421A Data Aquisition/Control Unit

[KeithB]

What is so special about a LabView driver?

I would use the .net NI488 device class that lets me talk to the instrument directly.
(Of course, if I was using the PIL-Box, I would abstract it to make it *look* like the NI488 device.)

You just send the text command to the 3421A, and parse the response you get back.

But it looks like we scared the OP off, or he thought better of it and got a modern DAQ.