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Virtual instrument software architecture

Test and measurement API


Test and measurement API

Virtual instrument software architecture (VISA) is a widely used application programming interface (API) in the test and measurement (T&M) industry for communicating with instruments from a computer. VISA is an industry standard implemented by several T&M companies, such as, Anritsu, Bustec, Keysight Technologies, Kikusui, National Instruments, Rigol, Rohde & Schwarz, and Tektronix.

The VISA standard{{cite news |url=http://www.ivifoundation.org/specifications/default.aspx |archive-date=2012-03-07 |access-date=2012-11-06 |archive-url=https://web.archive.org/web/20120307221020/http://www.ivifoundation.org/downloads/Class%20Specifications/IVI-6.1_HiSLIP-2010-06-08.pdf |url-status=dead |access-date = 2010-04-30 |archive-url = https://web.archive.org/web/20100326005605/http://www.usb.org/developers/devclass_docs/ |archive-date = 2010-03-26 |url-status = dead

The VISA library has standardized the presentation of its operations over several software reuse mechanisms, including through a C API exposed from Windows DLL, visa32.dll, over the Microsoft COM technology, and through a .NET API. Although there are several VISA vendors and implementations, applications written against VISA are (nominally) vendor-interchangeable thanks to the standardization of VISA's presentation and operations/capabilities. Implementations from specific vendors are also available for less common programming languages and software reuse technologies.

History

VISA was originally standardized through the VXIplug&play Alliance, a now-defunct T&M standards body. The current standard, "VISA Specification 5.0", is maintained by the IVI Foundation.

References

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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