Why does Labview freeze my computer when I try to read from the HP34401A?

[Andrew-deLozannegroup]

I am running Windows 2000, as an administrator with a password. I am trying to run a program that takes data from the HP34401A digital voltmeter, but every time I try to run the vi, it freezes my computer. I know this program works because I have used it on a computer before. Also, I am using an HPIB card with HPSICL and NIVISA 2.5.

[Rob Cole]

The problem here comes from the NIVISA. NI VISA only really works with NI hardware. Load the HP VISA. You will have to use "standard" VISA names for the device then. Such as: GPIB0::13::INSTR. I use this regularly since we have 3 different GPIB cards in various computers through the lab. Using this naming convention works in all machines, but we have to load the VISA drivers specific to the card installed in the machine.

[Andrew-deLozannegroup]

The actual problem was solved when the card was finally recognized by Windows. Our lab group had recently reinstalled Windows 2000, and after this, Windows did not pick up the already installed HPIB card. So we removed the card and reinstalled the Agilent I/O library (version J.01.01). Then we shut down the computer and put the HPIB into a new PCI-BUS slot and started the computer. Windows then detected the card and asked for drivers from the I/O library CD. Once the computer recognized the card and we set up the I/O configuration, it responded to commands without locking up.