Welcome to the Keysight VISA Help
VISA (Virtual Instrument Software Architecture) is an industry-standard I/O API. It can be used to develop I/O applications and instrument drivers that are interoperable with many other VISA applications from many vendors, and that comply with www.ivifoundation.org standards.
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This version of the IO Libraries Suite supports Windows and Linux. Available utilities, APIs, help files and features vary by operating system. Variations are flagged in help with these icons: |
for Windows and 
for Linux. This help file is a snapshot for internal alpha of the first Linux-supported release; some topics are under construction.
The reference information for Keysight VISA is organized into the following major sections.
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VISA User’s Guide - Describes the Keysight VISA library and shows how to use it to develop I/O applications and instrument drivers on Windows PCs.
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VISA Function Reference - Lists the Keysight VISA functions and provides brief descriptions of their usage.
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VISA Attributes - Describes attributes for the VISA template and supported Keysight VISA Resource Classes, including INSTR, MEMACC, INTFC, BACKPLANE, and SOCKET.
- VISA Library Information - Describes VISA type definitions, VISA error codes, and VISA directories, with additional information on using VISA in Visual Basic and in Microsoft .NET languages. (See these sections for OS-specific support.)
For general VISA specifications, see the VXIplug&play Systems Alliance VISA Library specifications.
Keysight VISA that ships with Keysight IO Libraries Suite 2024 provides support for Revision 5.7 of the VISA specification which is available from the www.ivifoundation.org.
For links to other help files, web resources, and live support for IO Libraries Suite, see Finding Help and Contacting Support.
Reproduced with Permission
Content from the IVI specifications reproduced with permission from the IVI Foundation.
The IVI Foundation and its member companies make no warranty of any kind with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. The IVI Foundation and its member companies shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.