Newsletter: What is PXImc? 3/17/2011
IN THIS ISSUE
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From Bob Helsel, Editor of the PXI Newsletter:

 PXI Links

Welcome to the March edition of the PXI Newsletter.  Our intent is to educate and inform you about how the PXI standard is being used in modular test systems for a wide variety of industries.

PXI Express: Bandwidth and Backward Compatibility

There are two key features of PXI Express to keep in mind, bandwidth and backwards compatibility.

  • PXI Express integrates PCI Express into PXI
    • Up to 18GBytes/s system bandwidth
    • Up to 6 GBytes/s backplane to host bandwidth
    • Up to 2 GBytes/s slot bandwidth
  • PXI Express maintains backward compatibility with PXI
    • Software compatibility
    • Hardware compatibility with hybrid slots and hybrid systems

This month, our main article is What is PXImc?, which will serve as a tutorial on PXI MultiComputing. PXImc was introduced as part of the PXI standard in 2009. In the New PXI Products section, we are showcasing PXI products recently released by members of the PXI Systems Alliance.

Visit http://www.pxisa.org for more information.

PXISA Website
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Main Article

What is PXImc?

By Chetan Kapoor
PXI Product Manager
National Instruments

Overview

Modern day test and control systems are growing larger, more complex and more intricate. Most of these intricacies are in order to address new challenges such as the need for higher speed, higher channel-count data acquisition and generation and inline data processing. These new test, measurement and control systems need to address these needs while still having to provide other features such as low cost, scalability, vendor interoperability and flexibility. At the core of these issues there is a fundamental need to transfer and process large amounts of data with minimal delay.

The PXI MultiComputing (PXImc) specification, announced by the PXI System Alliance in November 2009, attempts to address such needs of these complicated systems by using low-cost, off-the-shelf technology. The specification provides the hardware and software requirements to connect two or more intelligent systems together using PCI or PCI Express based interfaces via a PCI(e) Non-Transparent Bridge (NTB). The PCI Express bus offers multi-gigabyte per seconds of practical data throughput and few microsecond latency and is thus well suited to meet these data transfer needs.

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Thanks to all our readers.
Bob Helsel, Editor
www.pxisa.org
New PXI Products

The PXI platform continues its explosive growth with many new product introductions. New products introduced in the last three months include (listed in the order received):

NI PXIe-449x PXI Express Modules
For high-channel-count dynamic signal acquisition, the new PXI Express Modules Feature AC/DC coupling for multiple types of physical measurements.

OpenATE QSPI 3U PXI QUAD Digital PE and I2C/SPI IO Card
OpenATE announces a new model QSPI serial port interface tester  for power IC/analog IC/MEMS.

Agilent M9155/6/7C PXI Hybrid Switch Module Series
The Agilent M9155/6/7C PXI hybrid switch module series operates from a frequency range of DC to 26.5 GHz. These PXI modules provide an exceptional 0.03 dB insertion loss repeatability, high isolation and low SWR with a long operating life up to 10 million cycles.

 

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