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Fault detection system and method

  • US 20040232919A1
  • Filed: 07/13/2004
  • Published: 11/25/2004
  • Est. Priority Date: 06/12/2001
  • Status: Abandoned Application
First Claim
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1. A time domain reflectometer comprising a transmitter for generating a test signal, a multiplexer connected to the transmitter and to a test port, the test port having a plurality of outputs, each being connectable to one of a plurality of transmission media to be tested, wherein the multiplexer is controllable to route signals from the transmitter to a selected output of the test port, and means is provided to determine, select or confirm the return ground path for the selected output port, and wherein the reflectometer further comprises means for analysing reflected signals received back from the transmission media to be tested and the return ground path thereby enabling impedance changes along the length of the transmission media to be determined and the respective distance to the impedance changes, for transmission media of known and unknown impedance.

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