Re: How can I get a Visa Reference Number on a Spectrum Analyzer?

[Dennis Knutson]

You must have a pretty old version of LabVIEW if you need a session ID
instead of just a VISA Resource. If that's the case, you need to first
use an VISA Open function in which you specify a resource name of
GPIB::18. The open function will return a unique ID that you wire to
either VISA Write/Read or a subVI in a driver.