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A display of JPI avionics. J.P. Instruments is an American aircraft avionics manufacturer. [1] The company was founded in Santa Ana, California marketing its first product, "The Scanner", to monitor engine temperatures in piston engine aircraft. In 1992, JPI came out with the EDM-500 which electronically monitors and stores engine parameters. [2]
SCPI commands to an instrument may either perform a set operation (e.g. switching a power supply on) or a query operation (e.g. reading a voltage). Queries are issued to an instrument by appending a question-mark to the end of a command. Some commands can be used for both setting and querying an instrument.
LabWindows/CVI (CVI is short for C for Virtual Instrumentation) is an ANSI C programming environment for test and measurement developed by National Instruments. The program was originally released as LabWindows for DOS in 1987, but was soon revisioned (and renamed) for the Microsoft Windows platform. The current version of LabWindows/CVI ...
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). The VISA hardware ...
National Instruments also offers LabWindows/CVI as an alternative for ANSI C programmers. When applications need sequencing, users often use LabVIEW with the National Instruments TestStand test management software. The Ch interpreter is a C/C++ interpreter that can be embedded in LabVIEW for scripting. [30]
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 ...
In addition to the hardware bus to control an instrument, software for the PC is also needed. Virtual Instrument Software Architecture, or VISA, was developed by the VME eXtensions for Instrumentation (VXI) plug and play Systems Alliance as a specification for I/O software. VISA was a step toward industry-wide software compatibility.
Virtual instrumentation is the use of customizable software and modular measurement hardware to create user-defined measurement systems.. Traditional hardware instrumentation systems are made up of fixed hardware components, such as digital multimeters and oscilloscopes that are completely specific to their stimulus, analysis, or measurement function.