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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 ...
General Purpose Interface Bus (GPIB) or Hewlett-Packard Interface Bus (HP-IB) is a short-range digital communications 8-bit parallel multi-master interface bus specification originally developed by Hewlett-Packard and standardized in IEEE 488.1-2003. It subsequently became the subject of several standards.
Users interface to hardware by either writing direct bus commands (USB, GPIB, Serial) or using high-level, device-specific drivers that provide native "G" function nodes for controlling the device. National Instruments makes thousands of device drivers available for download on their Instrument Driver Network (IDNet). [10]
National Instruments Corporation, doing business as NI, is an American multinational company with international operations. Headquartered in Austin, Texas , it is a producer of automated test equipment and virtual instrumentation software.
HP introduced the Hewlett-Packard Interface Bus (HPIB) computer peripheral interface (later cloned by National Instruments as GPIB and standardized by the IEEE as IEEE-488) on their relay actuator products in 1973. HPIB was later integrated into most high end test & measurement equipment it produced from 1980 onward.
It has drivers and abstraction layers for many different types of instruments and buses are included or are available for inclusion. Measurement Studio includes a suite of analysis functions, including curve fitting, spectral analysis, fast Fourier transforms (FFT) and digital filters, and visualization.
An instrument driver, in the context of test and measurement (T&M) application development, is a set of software routines that simplifies remote instrument control. Instrument drivers are specified by the IVI Foundation [ 1 ] and define an I/O abstraction layer using the virtual instrument software architecture (VISA).
In the late 1960s the first bus used for communication was developed by Hewlett-Packard and was called HP-IB (Hewlett-Packard Interface Bus).Since HP-IB was originally designed to only work with HP instruments, the need arose for a standard, high-speed interface for communication between instruments and controllers from a variety of vendors.
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