Apparatus for testing multi-conductor cables

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage

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340514, G01R 3108

Patent

active

044183127

ABSTRACT:
Apparatus for testing multi-conductor cables for wiring errors, illustratively open, shorted or crossed conductors, is described. This apparatus, at the so-called far end of the cable, establishes a conduction path between all of the conductors, and, at the so-called near end, sequentially selects one of n-1 of the n conductors comprising the multi-conductor cable and establishes a conduction path between it and the n.sup.th conductor. As a result, a test loop is defined which at any one instant is comprised of only two conductors: the selected conductor and the n.sup.th conductor, wherein the latter serves as a fixed return path. At the near end, the apparatus applies a pulse of test current to each test loop in succession which, if the selected conductor comprising that loop is correctly wired, flashes a corresponding indicator located in the apparatus at the far end.

REFERENCES:
Graham, "Logic Circuit Tests Wiring Assemblies", Electronics, Dec. 25, 1975, p. 86.

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