×

Method and apparatus for detecting faults and locating conductors in multi-conductor cables

  • US 3,882,287 A
  • Filed: 04/20/1973
  • Issued: 05/06/1975
  • Est. Priority Date: 04/20/1973
  • Status: Expired due to Term
First Claim
Patent Images

1. A method for detecting and locating faults and/or identifying conductors in a multiconductor cable comprising the steps of:

  • connecting one of a plurality of tone generators all having a known nominal frequency but wherein the precise frequency of any given such generator varies from said nominal frequency and is thus unknown to one or more conductors of the cable at a first location thereon;

    temporarily coupling a tunable frequency amplifier having a manual adjustment to said tone generator or to a point adjacent the connection of said generator to said cable;

    tuning the tunable amplifier by means of said manual adjustment to the precise frequency emitted by said generator;

    decoupling the tunable frequency amplifier from said first location; and

    sensing the presence or absence of the applied tone generator signal on said cable at a location remote from said first location by applying a signal from a pick-up means to said tunable frequency amplifier; and

    monitoring the amplified output available from said amplifier for the presence or absence of the tone signal at said remote location.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×