Time-domain reflectometer for testing terminated network cable

Details Time-domain reflectometer for testing terminated network cable Time-domain reflectometer for testing terminated network cable

2005-02-15

2005-02-15

Nolan, Jr., Charles H. (Department: 2854)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

For fault location

C324S532000, C324S533000

Reexamination Certificate

active

06856138

ABSTRACT:
A time domain reflectometer having a first impedance when in a first test mode and a second impedance when in a second test mode. The first impedance is substantially the same as the nominal characteristic impedance of a network link cable not connected to a network and the second impedance is substantially different from the impedance of a network link cable that is terminated into a network. A method for measuring the length of a terminated network cable includes the steps of determining that the network cable is terminated at a network, selecting a test mode suitable for testing the terminated network cable, and performing time domain reflectometry testing on the terminated network cable.

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patent: 6532215 (2003-03-01), Muntz
patent: 6795402 (2004-09-01), Richardson et al.

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