LXI is the standard for LAN equipped instrumentation that helps reduce the time it takes to set up, configure, and debug test systems. LXI is an open, accessible standard based upon Ethernet that identifies specifications and solutions related to the functional test, measurement and data acquisition industries. Here are some key benefits of using LXI to build Test Systems:

  • Leverages the telecommunication industry infrastructure
  • Lowers test system cost using ubiquitous and inexpensive LAN components
  • Simplifies system integration
  • Provides high performance
  • Ensures broad instrument availability
  • IVI Driver requirement standardizes look and feel between products
  • Built-in Web Server for remote access and control of device.


Looking at the evolution of test busses, in 1972 Hewlett-Packard engineers invented the Hewlett-Packard Interface Bus (HP-IB) as an open standard communications bus (IEEE-488) from instruments to the computer. For almost 40 years, GPIB instruments (also known as rack-and-stack instruments) were the preferred architecture for test systems.

In 2005, Keysight Technologies (formerly Agilent Technologies) and VXI Technology, Inc. (Now VTI) introduced LXI; combining the best of GPIB instruments and VXI and PXI modules, LXI provides the high throughput of LAN, the global recognition that GPIB has, as well as test related features pioneered in VXI & PXI.

With over 54 of the top T&M companies sponsoring and developing this technology, and more than 3,704 products in over 321 different product families, LXI (LAN eXtensions for Instrumentation) is the current and future standard for T&M. It's seen the fastest ramp-up of any communications standard in the history of the test industry and products from leading test and measurement companies.


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