Testing more with less using PXI
By Matthew Friedman, PXISA Marketing Co-chairman -- Test & Measurement World, 3/1/2009 2:00:00 AM
As the economic uncertainty remains, we all have to make the hard choices about how to do more with less. For more than a decade, this has been one of the key goals of the PXISA (PXI Systems Alliance) when developing and now evolving the PXI standard. This is most evident in the fact that the modular PXI architecture shares a common backplane, power supply, microprocessor, display, and metal frame across all instruments in the system to remove the unnecessary duplication of these components in rack-and-stack systems. This results in significant cost, space, and power savings when considering the estimated 100,000 PXI systems to be deployed by the end of 2009, contributing to a combined reduction of more than 600,000 power supplies, microprocessors, displays, and metal frames that would have otherwise been purchased and deployed for each instrument in a system with a traditional rack-and-stack approach.
PXI also compares favorably budget-wise with other modular standards since it is based on a COTS (commercial off-the-shelf) approach to system components. For example, test system integrator NTS saved more than $20,000 per avionics test system by switching to PXI from VXI. Engineers can further maximize the price and performance of their PXI systems as a result of the high level of interoperability and wide selection of products offered by more than 60 PXI vendors. Furthermore, PXI multivendor support offers a cost-effective upgrade path to enhancing the processing performance or I/O capabilities of a PXI system by only adding the required functionality and thus preserving the initial investment.
Looking forward, PXI will continue to deliver a cost-optimized solution for many automated test, measurement, and control applications. The COTS-based, modular-system architecture of PXI contributes to a lower system cost by eliminating redundant system components, using less power and rack space, and delivering industry-leading interoperability for optimized multivendor solutions. This approach enables engineers to assemble high-performance systems with measurement capabilities from DC to 26.5 GHz while paying only for the required functionality and performance.
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