Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – For fault location
Patent
1988-12-01
1990-04-03
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
For fault location
324533, 324543, G01K 3111
Patent
active
049143948
ABSTRACT:
A pocket-size Time Domain Reflectometer is described. The pocket-size Time Domain Reflectometer consists of a pulse generator for producing a test pulse along with a delay line for delaying the test pulse before it is transmitted to a cable whose impedance characteristics are to be determined along its entire length. A test connector outputs the delayed test pulse to the cable that is being tested and the test connector receives reflections of the test pulse produced by the cable. The delay pulse generator produces a delay pulse having a pulse width identical to the test pulse at a time t after the production of a test pulse determined by the delay adjuster which is set in accordance with the specific point along the length of the cable which is being tested. A reflection sensing device is reponsive to the delay pulse and reflections received by the test connector and produces a reflection output signal which is monitored by a meter. The meter then produces an output indicative of the impedance characteristics of the cable at any specific point as selected by delay pulse t that is being tested in accordance with the reflection sensing output signal.
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Eisenzopf Reinhard J.
Electromagnetic Techology, Inc.
Mueller Robert W.
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