The PXI Systems Alliance (PXISA) is an industry consortium that promotes and maintains the PXI (PCI eXtensions for Instrumentation) Standard. The PXISA is an organization chartered to:·  

• Promote the PXI Standard
• Ensure interoperability
• Maintain the PXI Specification

PXI has become a dominant industry standard for functional test, ATE, data acquisition and process automation applications. It combines technology from the CompactPCI™ specification with integrated timing and triggering, resulting in a rugged platform with significant performance advantages over other test and measurement architectures.

Founded in 1998, the PXISA is comprised of industry leading companies manufacturing, selling, and integrating PXI-based hardware and software solutions.  PXI delivers the performance, flexibility and cost benefits of the latest available technology with the benefits of an established, open industry standard.