VISA Directories

This topic provides information about the location of VISA software files.

This section contains information that applies to both Windows and Linux.

Always use Add/Remove Programs from the Windows Control Panel to remove the Keysight IO Libraries Suite; never delete installed files manually.

Windows Directory Structure

The Keysight IO Libraries Suite uses IVI VISA COM Standard Components, which install the IVI VISA COM files and create the VXIplug&play directory structure if it doesn't already exist. The default base directory for the VXIplug&play components in this installer is:

      C:\Program Files\IVI Foundation\VISA

Note that if you already have a set of VXIplug&play directories on your PC, the new installer will continue to use your current set of directories — typically either

  C:\Program Files\VISA      

or

     C:\VXIPNP

— and will not create a new set in

      C:\Program Files\IVI Foundation\VISA.

The visa32.dll file (for 32- and 64-bit operating systems) and visa64.dll file (for 64-bit operating systems) are stored in the C:\Windows\System32 folder. Click the IO icon in the Windows notification area, then click Installation Information to view a dialog box that contains the VISA path information. A typical display follows.

 

Your Keysight IO Libraries Suite version number may be different, and your paths may be different if you did a custom installation.

Linux Directory Structure

Keysight VISA has a link file “libiovisa.so” under /usr/lib64 which points to a real VISA implementations file.