Hi otcs,
National Instruments has discontinued support for LabVIEW versions prior to 6.0. Unfortunately, the instrument drivers available for download will not be openable in LabVIEW 5.0. I would highly recommend updating your LabVIEW application to take advantage of the numerous applications that are available for use with your HP 83712B synthesized CW generator. This would definitely help jump-start development for your device and would take much of the frustrations of low-level programming away.
Otherwise, to communicate with your device using LabVIEW 5.0, I would suggest first opening up the National Instruments
Measurement and Automation Explorer (MAX) and making sure that your computer has recognized the hardware device installed on your co
mputer. Then, use the
VISA Interactive Control (VISAIC) found under Tools->NI VISA->Visa Interactive Control. Then, there's a shipping example in LabVIEW called
LabVIEW<->GPIB that you can find under Help->Find Examples...->Hardware Input and Output->GPIB.
Hope this helps. Good luck!
Kileen Cheng
Applications Engineer
National Instruments