I am trying to use the Easy Visa Find Resources.vi to determine what GPIB devices are present. I have five machines with Pentium class CPUs and AT-GPIB-TNT. All are using Windows98 and have driver version 1.6. Three machines work perfect the other two generate an error. All GPIB boards are working and have been performing well with basic GPIB commands for awhile. The error is Error -1073807202. It is followed by a message that this error is not listed. Any ideas? Thanks.
According to the LabVIEW help files, Error -1073807202 corresponds to VISA error code VI_ERROR_LIBRARY_NFOUND, which seems to indicate that VISA is having trouble finding or loading one of its code libraries.
I assume that you are using NI-VISA. If so, then you can check the VISA Interactive Control (VISAIC) to see if it detects your GPIB devices. If it doesn't, then try refreshing the view (View >> Refresh). You may want to try reinstalling VISA on the affected machines.
VISAIC is usually located under Start >> Programs >> National Instruments >> VISA. Alternatively, it can also be found under Start >> Programs >> VXIpnp, if you have NI-VXI installed.
I assume that each of these machines has the same version of LabVIEW and the same version of NI-VISA, but please correct me, if I am wrong. If you need to download NI-VISA (to standarize on the same version or to download the latest version), then it is available on the National Instruments site in the Drivers and Updates Library. Go to the main Technical Support page (http://www.ni.com/support) and click the "Software Downloads" link. Then click the "Drivers and Updates" link.