Product category:
Factory data acquisition
News Release from: National Instruments | Subject: PXI-5922 flexible resolution digitiser
Edited by the Manufacturingtalk Editorial
Team on 24 March 2005
Digitiser enables wide range of
measurements
Design and test engineers can now use a single modular instrument - a flexible resolution digitiser - to make a wide range of dynamic measurements.
Design and test engineers can now use a single modular instrument to make a wide range of dynamic measurements with the new National Instruments flexible resolution digitiser Just as the digital multimeter brought universal measurement capability to DC measurements, the NI PXI-5922 flexible resolution digitiser revolutionises dynamic measurements with a universal measurement device
This article was originally published on Manufacturingtalk on 7 Jun 2001 at 8.00am (UK)
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Engineers can combine the module with NI LabVIEW 7.1 to create numerous types of instruments, such as AC voltmeters, audio analysers, frequency counters, spectrum analysers or I/Q modulation analysers, that often exceed the measurement performance of high-end traditional instruments with similar functionality.
"Virtual instrumentation redefined how test and measurement systems were built," said Dr James Truchard, NI President and CEO.
"The NI PXI-5922 flexible resolution digitiser redefines how the hardware for virtual instrumentation is built by providing a device that spans many different applications.
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The module ensures error-free measurements for the broadest set of applications of any digitiser and takes us a long way toward our goal of a universal instrument measurement platform." Unlike traditional measurement devices that have a fixed resolution for all sample rates, the NI PXI-5922 digitiser uses the NI FlexII ADC that has flexible resolution and can sample anywhere from 16 bits at 15 MS/s to 24 bits at 500 kS/s.
The NI FlexII ADC incorporates patented NI methods for reducing the linearity and temperature drift errors inherent to multi-bit sigma-delta converters to achieve unprecedented dynamic range at high sample rates.
With the module's large dynamic range and low noise, design and test engineers can directly digitise low-level signals without the need for external signal conditioning, such as filters and low-noise amplifiers.
Reduced signal conditioning improves measurement accuracy and reliability while also saving test system development time.
The combination of measurement flexibility and high dynamic range make the NI PXI-5922 module ideal for a wide range of applications.
With performance exceeding the best commercially available ADCs, for example, engineers can use the module to characterise and test the latest DACs.
For precision audio applications, the digitiser's unparalleled ability to acquire signals with 24-bit resolution at up to 500kS/s means engineers can capture high-order harmonics with wide dynamic range.
The module's 18-bit resolution at 10MS/s makes it an excellent digitiser for acquiring baseband I/Q signals used in digital communications systems.
The NI PXI-5922 module is built on the Synchronisation and Memory Core (SMC) architecture for tight synchronisation with other SMC-based products such as high-speed digitisers, arbitrary waveform generators and digital waveform generator/analysers.
This gives the module multiple instrument synchronisation with module-to-module skew of less than 1ns typical; deep, flexible onboard memory up to 256MB per channel; and high-speed data streaming.
Engineers can use the module to create mixed-signal stimulus response measurements or to expand the number of acquisition channels up to 1,632 channels by synchronising multiple NI PXI-5922 modules.
About NI Modular Instruments NI offers essential technologies for test, which combine high-performance hardware, flexible software and innovative timing and synchronisation technology for test and design applications.
NI modular instruments offer accurate, high-throughput measurements from DC to 2.7GHz.
The product family includes: * High-resolution digitisers (up to 24 bits, up to 200 MS/s) * Signal generators (up to 16 bits, 200MS/s) * Digital waveform generator/analysers (up to 400Mb/s) * Digital multimeters (up to 7.1/2 digits) * RF vector signal generators and analysers (up to 2.7 GHz) * Dynamic signal analysers (up to 24 bits, 204.8 kS/s) * Switching (multiplexers, matrices and general purpose).
* About National Instruments National Instruments is a technology pioneer and leader in virtual instrumentation - a revolutionary concept that has changed the way engineers and scientists in industry, government and academia approach measurement and automation.
Leveraging the PC and its related technologies, virtual instrumentation increases productivity and lowers costs through easy-to-integrate software, such as the NI LabVIEW graphical development environment, and modular hardware, such as PXI modules for data acquisition, instrument control and machine vision.
Headquartered in Austin, Texas, NI has more than 3,400 employees and direct operations in approximately 40 countries.
In 2004, the company sold products to more than 25,000 companies in 90 countries.
For the past six years, FORTUNE magazine named NI one of the 100 best companies to work for in America. Request a free brochure from National Instruments ...
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