Abhay Samant
Modular instruments connected by the PXI bus now represent the fastest growing off the overall test and measurement market, says National Instruments executive Abhay Samant.
Speaking today at the National Instruments Automated Test Summit in Reading, Samant said the reason for this growth was PXI’s ability to scale upwards to meet the need for greater bandwidth, data processing and low latency.
“Two application areas where this is most apparent is in defence systems and the early phase development of 5G mobile communications,” said Samant.
“PXI now makes up nearly 20% of the overall test and measurement market and is forecast to continue to grow at a 17.6% compound annual growth rate,” said Samant.
This could make it the fastest growing sector of the test and measurement market as a whole.
Samant claimed that the marketshare of the older bus-based instrumentation technology called VXI is shrinking.
VXI is based upon VMEBus. Originally developed for the Motorola 68000 line of CPUs, VXI was traditionally strong in the defence and industrial markets over many years.
“The majority of VXI users are in regulated military and aerospace applications, but even this audience is greatly adopting the PXI platform,” said Samant.
According to Samant, an important strength of PXI is the way the scaling of its performance in terms of bandwidth and data throughput is closely tied to that of PCI Express.
Early this year the third generation PXI platform was introduced. This uses PCI Express Gen 3.0 technology with its 24Gbyte/s data bandwidth.
“Whereas the development of PCI Express was being driven by the needs of Intel and the PC sector, it is now being driven by the needs of gaming applications which not only need wide bandwidth, they also need low-latency ,” said Samant.
Sament believes this combination of bandwith low latency is the reason that PXI-based development systems are now being used for 5G and also for the design of radar-based driver assistance systems in cars.
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