I had an older computer that ran a GPIB power meter. It ran fine, but the computer had to be replaced because of other problems. The new computer has the same version of LabVIEW (7.0) and the same GPIB card (NI PCI-GPIB). The problem is that after a random amount of time (usually more than 12 hours but as little as 10 minutes) the lowest level GPIB functions will freeze completely. I can still open the vi, view the diagram and click the Highlite Execution button, but it just shows that the vi is stuck on either "Send" or "ReadStatus". The programming running the function cannot be aborted and I have to use the task manager to stop LabVIEW. I have tried re-installing the driver using the CD that came with the board but that didn't help. Has any one else seen this behavior? It is a problem when I am doing a six hour scan and have to restart because the computer freezes.
The computer also has a motion board that runs on a separate vi. The motion control program has no problems running even while the GPIB program is frozen.
