Test & Measurement


LabVIEW analysis capabilities extended in sound and vibration, communications applications

19 May 2004 Test & Measurement

National Instruments offers three toolkits that extend virtual instrumentation by giving engineers the freedom to analyse their acquired data and create custom measurements to meet their application requirements. They are: the Spectral Measurements Toolkit, the Order Analysis Toolkit and the Sound and Vibration Toolkit. With these, engineers now can perform simple and complex measurements for communications, sound and vibration and machine condition monitoring applications.

The analysis capabilities of these toolkits complement the more than 400 functions and 16 new Express VIs for analysis, signal processing and mathematical functions available in the LabVIEW 7 Express graphical development environment. With this breadth and depth of analysis capability, LabVIEW users can now perform a wide variety of functions, including: sound and vibration analysis; order analysis; time-domain and frequency-domain measurements; signal processing; statistics and mathematical operations; signal generation and simulation; mask and limit testing; image processing; and machine condition monitoring.

A complete list of analysis functions can be seen at www.ni.com/analysis/labview.htm.

In telecommunications applications, the Spectral Measurements Toolkit can perform frequency-domain analysis and analog demodulation functions. It contains averaged, zoom and continuous FFT functions as well as common measurements such as peak power and frequency, adjacent channel power, power spectral density and occupied bandwidth. The toolkit is ideal for a variety of applications including testing mobile communications and designing 802.11 devices.

For sound and vibration applications such as machine condition monitoring and noise, vibration and harshness testing, the Order Analysis Toolkit expands standard order analysis functionality to include order extraction, order tracking and tachometer signal processing. With the new toolkit, engineers now have online order analysis, tacholess signal processing, flexible order spectrum selection and enhanced data presentation. In addition, the Sound and Vibration Toolkit extends LabVIEW with VIs and displays for use in applications involving sound and vibration analysis. It offers system calibration and performs frequency analysis, standards-compliant octave analysis, sound-level measurement and transient analysis.

For more information contact National Instruments SA, 0800 203 199.





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