Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – For fault location
Patent
1991-09-05
1992-07-07
Wieder, Kenneth A.
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
For fault location
324534, 379 26, 379 6, G01R 3111
Patent
active
051286190
ABSTRACT:
A method of and system for automatically determining length, attenuation, impedance and existence of bridge taps on installed communication cable having access to only one end of the cable. A waveform, which includes incident and reflected pulses, is analyzed to determine the presence of significant pulses. The presence of only one positive significant pulse indicates the absence of any discontinuities and facilitates the calculation of a signal-to-noise ratio which determines whether the cable will support the operation of digital communication thereon. The presence of more than one positive significant pulse or a negative pulse indicates the presence of at least one fault on the cable which prevents the operation of digital communication on the cable.
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Bjork Roger A.
Chapman John T.
Cochrane Harry L.
Wilson Timothy L.
Regan Maura K.
Wieder Kenneth A.
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