Introduction to the PXI Architecture

Building high-performance, mixed-measurement systems for validation and production test.

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PXI systems provide high-performance modular instruments and other I/O modules with specialized synchronization and key software features for test and measurement applications from device validation to automated production test. For a high-level understanding of PXI, see the two images in Figure 1 that compare a PXI system’s chassis, controller, and PXI(e) peripheral modules to components of a commercial desktop PC. The key is to realize how PXI builds off of and maps to commercial PC technology:

  • The PXI chassis compares to the desktop’s enclosure
  • The PXI controller compares to the desktop’s CPU, memory, and I/O
  • The PXI(e) peripheral modules compare to the desktop’s PCI(e) peripheral modules

Find more information here.

 

Fig.1:  Compare a PXI system to a commercial desktop PC. Source: National Instruments.

 



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