time-domain reflectometer for testing coaxial cables

Details time-domain reflectometer for testing coaxial cables time-domain reflectometer for testing coaxial cables

1994-07-08

1996-12-17

Voeltz, Emanuel T.

Boots, shoes, and leggings

370238, 359136, 324534, 324512, G01R 3111

Patent

active

055860540

ABSTRACT:
A time-domain reflectometry device and method are provided wherein TDR may be performed on active Ethernet systems. A crossover network provides proper impedance termination both for pulse information generated by the TDR and for DC path signals. If a potential collision is detected when generating TDR pulses, a collision is forced by asserting a DC bias on the network thereby simulating a collision and generating a timeout at a much lower protocol level for reducing noticeable delay to network users and increasing network throughput.

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