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VCIbus hardware. VME eXtensions for instrumentation bus (VXI bus) refers to standards for automated test based upon VMEbus.VXI defines additional bus lines for timing and triggering as well as mechanical requirements and standard protocols for configuration, message-based communication, multi-chassis extension, and other features.
The VISA standard [1] includes specifications for communication with resources (usually, but not always, instruments) over T&M-specific I/O interfaces such as GPIB and VXI. There are also some specifications for T&M-specific protocols over PC-standard I/O, such as HiSLIP [2] or VXI-11 [3] (over TCP/IP) and USBTMC [4] (over USB).
This page was last edited on 13 July 2009, at 18:51 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...
The VXI bus architecture is an open standard platform for automated test based on the VMEbus. Introduced in 1987, VXI uses all Eurocard form factors and adds trigger lines, a local bus, and other functions suited for measurement applications.
It was specified by the IVI Foundation [1] and is intended to replace the older VXI-11 [2] protocol. Like VXI-11, HiSLIP is normally used via a library that implements the VISA API. Version 1.4 of the LAN eXtensions for Instrumentation (LXI) standard recommends HiSLIP as “LXI HiSLIP Extended Function for LXI based instrumentation”.
The VXIplug&play Systems Alliance was founded in 1993 [2] with the aim of unifying VXI hardware and software to achieve 'plug and play' interoperability for VXI and GPIB instruments. As part of the unifying process, VXIplug&play instrument drivers [3] were also defined.
Bustec's products are modular. A VXI or LXI interface backend (VXI motherboard or LXI carrier device) can be equipped with various Bustec's function cards. This approach is a flexible solution, because the modules can be configured to meet system specific needs, allowing better space utilization.
PCI eXtensions for Instrumentation (PXI) is a modular instrumentation platform originally introduced in 1997 by National Instruments.PXI is promoted by the 69-member PXI Systems Alliance (PXISA), whose sponsor members are (in alphabetical order) ADLINK, Cobham Wireless, Keysight Technologies, Marvin Test Solutions, National Instruments, Pickering Interfaces and Teradyne.