Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – For fault location
Patent
1995-01-26
1996-05-28
Wieder, Kenneth A.
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
For fault location
324534, 324 7638, 324644, G01R 3111
Patent
active
055215122
ABSTRACT:
A time domain reflectometer includes a clock signal source that synchronizes a Start pulse source which, in turn, generates a succession of Start pulses. Each succeeding Start pulse, after an initial Start pulse, is delayed in time from a preceding Start pulse by a test pulse interval plus a delay time. A test pulse circuit responds to each Start pulse by applying a test pulse to the LUT. A reflection signal sampling circuit samples N reflection signals in synchronism with the clock signal source, whereby successive ones of the N reflection signals are sampled at different delay times as a result of the delay time added to each succeeding Start pulse. A memory circuit assembles sampled reflection signal values from the N reflection signals in a manner that the reflection signal values are interleaved in time order as though all sampled reflection signal values were obtained from a single reflection signal.
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Monahan Thomas J.
Solis Jose M.
The Penn State Research Foundation
Wieder Kenneth A.
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