NI Introduces Four-Channel Module for High-Speed, 24-Bit Data Acquisition.AUSTIN, Texas -- Engineers now can perform high-channel-count audio and vibration analysis applications faster and with more accuracy using the new National Instruments National Instruments, or NI (NASDAQ: NATI), is an American company with over 4,000 employees and direct operations in 41 countries founded in 1976 by Dr. James Truchard, Bill Nowlin and Jeff Kodosky. (Nasdaq:NATI NATI National Association of Teen Institutes NATI Newfoundland Association of Technical Industries ) PXI-4462 data acquisition (DAQ See data acquisition. ) module. The NI PXI-4462 DAQ module is the newest addition to the company's 24-bit sound and vibration measurement hardware family and delivers four-channel differential inputs for high-end audio test and noise, vibration and harshness (NVH NVH Noise, Vibration and Harshness NVH Nahverkehr Hohenlohekreis (German) NVH Noise Vibration and Harshness ) applications on the PXI (PCI EXtensions for Instrumentation) A peripheral bus specialized for data acquisition and real time control systems. Introduced in 1997, PXI uses the CompactPCI 3U and 6U form factors and adds trigger lines, a local bus and other functions suited for measurement platform. This DAQ module is ideal for engineers requiring a high-channel-count analog input for vibration, acoustic and audio measurements. The new module features 24-bit delta-sigma converters that provide nearly 120 dB dynamic range across an audio bandwidth up to 20 kHz, ensuring high accuracy for engineers taking precision audio measurements. It also includes antialiasing See anti-aliasing. protection and integrated electronic piezoelectric The property of certain crystals that causes them to produce voltage when a mechanical pressure is applied to them such as sound vibrations. This technique is used to build crystal microphones, phonograph cartridges and strain gauges, all of which turn mechanical movement into voltage. (IEPE) conditioning for microphones and accelerometers. Engineers can synchronize this module with the previously released NI PXI-4461 module, which features 24-bit, analog I/O (Input/Output) The transfer of data between the CPU and a peripheral device. Every transfer is an output from one device and an input to another. See PC input/output. I/O - Input/Output , for vibration applications such as shaker control and stimulus-response tests including speaker testing. The National Instruments 24-bit sound and vibration measurement hardware family now includes three dynamic signal acquisition modules for the PXI platform. NI PXI-4472 NI PXI-4462 NI PXI-4461 ---------------- ------------- --------------- ------------------- I/O channels 8 input 4 input 2 input/2 output ---------------- ------------- --------------- ------------------- Sampling rate 102.4 kS/s 204.8 kS/s 204.8 kS/s ---------------- ------------- --------------- ------------------- Input range +/-10 +/-316mV - 42V +/-316mV - 42V ---------------- ------------- --------------- ------------------- By using the PXI-4462 DAQ module with powerful software tools such as the NI LabVIEW Sound and Vibration Toolkit 3.1 and the NI LabVIEW Order Analysis Toolkit 2.0, engineers can perform a variety of tests including fractional-octave analysis, total harmonic distortion The total harmonic distortion, or THD, of a signal is a measurement of the harmonic distortion present and is defined as the ratio of the sum of the powers of all harmonic components to the power of the fundamental. , spectral analysis and joint time-frequency analysis. About National Instruments National Instruments (www.ni.com) 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 3,100 employees and direct operations in 41 countries. In 2003, the company sold products to more than 25,000 companies in 90 countries. For the past five years, FORTUNE magazine named NI one of the 100 best companies to work for in America. Readers may obtain investment information from the company's investor relations Investor relations The process by which the corporation communicates with its investors. department by calling 512-683-5090, by sending e-mail to nati@ni.com or by visiting www.ni.com/nati. Pricing and Contact Information PXI-4462 data acquisition module Priced from $3,995 Web: www.ni.com/soundandvibration 11500 N Mopac Expwy, Austin, Texas 78759-3504 Tel: 800-258-7022, Fax: 512-683-9300 E-mail: info@ni.com LabVIEW, National Instruments, NI and ni.com are trademarks of National Instruments. Other product and company names listed are trademarks or trade names of their respective companies. |
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