PXI Standard & Specifications

PXI tutorial includes:
What is PXI?     PXI standard     PXI chassis     PXI bus and backplane     PXI controller     PXI cards & modules     PXI software     PXI Express     PXImc MultiComputing     Set-up & build PXI system    

PXI is an open standard and is run by an organisation with interested member companies. In this way, PXI meets the needs of users suppliers alike.

The format for open standards works well within industry, allowing users to be able to source equipment from a variety of suppliers. This not only benefits the users, but also the manufacturers as it increases the overall size of the market that they can address.

PXI Systems Alliance PXISA

The PXI system is currently governed by the PXI Systems Alliance, PXISA.

This alliance consists of an organisation that has over 50 member companies and was originally founded in 1998.

The aim of the PXISA is to promote the PXI standard, ensure interoperability, and maintain the PXI specification.

PXI is an open specification and as a result, it is possible for any vendor to build PXI products.

It is also worth noting, that PXI is based upon CompactPCI, the standard regulated by the PCI Industrial Computer Manufacturers Group PICMG. As a result, PXI modules can reside in the same PXI system without any conflict because interoperability between CompactPCI and PXI is a key feature of the PXI specification.

Standard history

The PXI standard can be traced back to 1993 with the release of the PCI specification on which PXI was later to be based. Realising that the PCI standard could be used for controlling test and data acquisition instrumentation, National Instruments developed a scheme based upon the PCI standard but modified for the needs of the test instrumentation industry. The first release of the PXI standard was issued in 1997.

The standard is an industry open standard and it is now managed by the PXI Systems Alliance. With the open architecture, and based around the PCI specification, this has enabled PXI technology to grow very rapidly. As a result a large number of products using the technology are available and the system has become a universal technology for the test and measurement and data acquisition sectors.

With the popularity of PXI, work continued to improve the system. This resulted of the release of the Issue 2 of the standard in 2000, and this was followed by a further revision in 2003 of issue 2.1.

With technology and standards moving forwards, while costs were reducing, the PXI standard kept in line. Using the PCI Express standard, the PXI standard was updated to provide PXI Express. This enabled a lower cost variant to be added to the family.

PXI standard & specifications

The PXI standard has a number of specifications associated with it. These are given numbers PXI-n, where n is the number of the individual specification. There are several specifications included and these cover both PXI and PXI-Express

The PXI standard and specifications are worked upon to ensure that they are up to date and revisions and updates are issued by the PXISA periodically.

  Written by Ian Poole .
  Experienced electronics engineer and author.

More Test Topics:
Data network analyzer     Digital Multimeter     Frequency counter     Oscilloscope     Signal generators     Spectrum analyzer     LCR meter     Dip meter, GDO     Logic analyzer     RF power meter     RF signal generator     Logic probe     PAT testing & testers     Time domain reflectometer     Vector network analyzer     PXI     GPIB     Boundary scan / JTAG     Data acquisition    
    Return to Test menu . . .