Not all GPIB interfaces were recognized. There are several reasons why you might encounter this problem:
Refer to the GPIB Hardware Guide to verify that your GPIB interface is correctly installed. Rerun the NI-488.2 Troubleshooting Wizard.
The GPIB Hardware Guide is installed with NI-488.2, in the /usr/share/doc/ni-488.2-documentation directory. To view the document, you need Adobe Acrobat Reader, which you can download from www.adobe.com.
You have a non-Plug-and-Play interface, such as a GPIB-ENET/1000, and you did not use GPIB Explorer to add the interface to your system properly. Open GPIB Explorer to add the new interface.