Virtual instrument software architecture: Difference between revisions

Revision as of 05:08, 28 April 2010

Revision as of 12:06, 29 April 2010

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'''Virtual Instrument Software Architecture''', commonly known as '''VISA''', is a widely used [[Input/output|I/O]] [[Application programming interface|API]] in the Test & Measurement industry for communicating with [[Measuring instrument|instruments]] from a [[Personal computer|PC.]] VISA is an [[industry standard]] implemented by several T&M (Test & Measurement) companies, such as [[Agilent|Agilent Technologies]] and [[National Instruments|National Instruments.]] Gunjan

The VISA standard includes specifications for communication with resources (usually, but not always, instruments) over T&M(Test and Measurement)-specific I/O interfaces such as [[GPIB]] and [[VXI|VXI.]] There are also some specifications for T&M-specific [[Protocol (computing)|protocols]] over PC-standard I/O, such as VXI-11 (over [[TCPIP|TCP/IP]] ) and USBTMC (over [[USB]]).