Results 221 to 230 of about 232,270 (266)

A digital technique for measuring the velocity and attenuation of sound

Instruments and Experimental Techniques, 2009
A digital procedure for measuring the velocity and attenuation of sound in a wide temperature range is described. Commercially available digital instruments are used.
A. E. Petrova, S. M. Stishov
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A Digital Technique for Measurement of Differential Pressure and Flow

IEEE Transactions on Industrial Electronics and Control Instrumentation, 1978
The paper describes a useful technique for digital transduction of differential pressure. The primary sensor used is a unique voltage-divider type transducer which divides the ac voltage supplied to it in linear response to the differential pressure variations.
Wasim Ahmad, Maslehuddin Khan
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A Digital Interpolation Technique in Time Measurement

IEEE Transactions on Instrumentation and Measurement, 1964
The problem of measuring a time interval using a crystal oscillator as a time base is discussed. A statistical analysis is made of the free-running oscillator and gated counter when the time interval to be measured is repetitive. Using the equivalent circuit of a quartz crystal, the difficulties involved in using a pulsed crystal oscillator as a time ...
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Measurement Techniques for Digital Television

2001
The measurement of characteristic parameters in digital television can be divided into two areas. First of all, the source signals in the baseband are processed to form compressed data streams. These are subsequently furnished with an error protection and then digitally modulated for transmission.
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Digital speckle displacement measurement by a thresholding technique

SPIE Proceedings, 2006
The digital speckle measurement technique has a wide-range application. This paper proposed a thresholding method, which is different from usual template-matching method, to measure the displacement of speckles. To achieve this, the thresholding method employs a statistical process.
Dong Hui Li, Li Guo, Tian Qiu
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Digital measuring techniques and evaluation processes

15th IET International School on High Voltage Engineering and Testing 2008, 2008
After the description of the main characteristics of digital measuring systems in comparison to analogue measuring systems the most difficult type of voltages to be measured in high voltage tests, the lightning and switching impulse voltage, will be used to show the important parameters of digital measuring systems and its consequence concerning ...
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Digital Techniques in High-Voltage Measurements

IEEE Power Engineering Review, 1982
A review of digital techniques and instruments developed and applied to high-voltage measurements is presented. Advantages of digital instruments over their analog homologues are exposed together with some examples of processing of digitized signals recorded in HV laboratories.
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A linearity measurement technique for analogue-to-digital converters

Nuclear Instruments and Methods, 1968
Abstract A rapid, accurate and efficient technique for determining the differential linearity of analogue-to-digital converters is presented. The method is applicable to any ADC having a zero offset and is completely independent of the linearity of the test equipment.
H. Lycklama, T.J. Kennett
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On Improved Digital Techniques of Pulse Width Measurement

IETE Journal of Research, 1973
A digital technique for the instantaneous measurement of pulse width is described in this paper. The techniques make use of a 50 per cent amplitude sampling circuit which converts the varying amplitude pulses into the fixed amplitude pulses require to work with the pulse stretcher and a special stretcher circuit which generates a pulse 100 times as ...
A. N. Murthy, J. P. Gupta, K. Mohan Reddy   +2 more
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Digital interferometry: techniques and trends for fluid measurement

Heat and Mass Transfer, 2007
Interferometric based measurement techniques have long played a significant role in enabling insight and understanding into the flow and heat transfer processes in a wide range of fluid flow situations. In recent years, with the advent of digital processing techniques, full field quantitative data can be obtained from interferometric data with relative
D. Newport, C. B. Sobhan, J. Garvey
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