Waveform measurement

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Analysis of complex waves

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324 7616, 364554, 364487, G01R 1700

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056379943

ABSTRACT:
The characteristics of an a.c. waveform are determined by measuring the time interval between the instant when the waveform crosses a first reference threshold and the instant when it crosses another threshold. The second threshold is varied to obtain a series of time interval measurements from which a point by point reconstruction of the waveform can be made. The technique has the advantage that it can be used to characterize waveforms whose arrival time is indeterminable.

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A.A. Guido, et al., "Automatic Pulse Parameter Determination with the Computer Augmented Oscilloscope System", I.B.M. Journal of Research and Development, vol. 15, No. 3, May 1971, pp. 204-212.
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Extract on Analog Devices' AD9500 Device, Analog Devices Linear Products Databook, Apr. 1988, pp. 9-49.

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