What is the Difference Between PXI and PXIe?

Male mechanical engineer working on developing sustainable agricultural robotics

In the world of test and measurement, precision and flexibility are paramount. Two prominent modular instrumentation platforms, PXI (PCI eXtensions for Instrumentation) and PXIe (PXI Express), have been developed to meet these needs. While they share some similarities, they also have critical differences that can significantly impact your testing setup.

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25 Years of PXI- A History

PXI-4071 Card in front of a full PXI -1045 chassis

PXI is a robust platform that is powered by software and PCI electrical-bus characteristics with CompactPCI’s modular, Eurocard design. For over 2 decades, this high-performance and inexpensive deployment platform has been useful for a wide variety of applications across an expansive range of industries- including the military, aerospace, and industrial industries. The capabilities of PXI in test, measurement, control, and data acquisition applications set the industry standard- but how did it get to this point?

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PXI and PXIe Compatibility

Closeup side view of PXI-5105

The PXI and PXI Express chassis portfolio from National Instruments includes a wide range of size and performance options, as well as additional features to ease system interface and usage. The variety of options to fit specific needs is one of the reasons that the NI PXI and PXIe are industry leaders for automated testing and measurement. However, understanding the compatibility differences between the two can often lead to some confusion.

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7 Ways Apex Waves Fills the Void for NI Obsolescence Planning

Apex Waves specializes in obsolete National Instruments products, which encompasses a variety of PCI, PXI, SCXI, CompactRIO, and CompactDAQ products. Obsolete products are not manufactured or offered by the manufacturer anymore. This also means support services are not offered. Obsolete NI products cannot be purchased, repaired, or calibrated by the manufacturer.

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National Instruments Holds Numerous Patents for Innovative Products

Opinions vary on the importance of filing for a patent for a unique invention or product. An article in Forbes Magazine claims, “Around 97% of all patents never recoup the cost of filing them.” Dennis Crouch, from the Center for Intellectual Property & Entrepreneurship at the University of Missouri Law School, states on his website, “About 50% of patents expire prematurely because their owners decline to pay the required maintenance fees.”

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Why you Should Buy PCI Spares

Many products in the National Instruments PCI platform, also known as “Peripheral Component Interconnect,” are considered obsolete or mature because the newer, more advanced PCI Express platform has expanded upon PCI with upgraded features meant for newer computers. However, the NI PCI platform is suited for a variety of applications and industries, most notably for applications in the aerospace and defense industry. These applications include ATE systems and software, electromechanical systems test, embedded software test, communications, and navigation systems test, and radar, electronic warfare, and signals intelligence.

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