Detection of bridged taps by frequency domain reflectometry
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United States of America Patent
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Oct 15, 2002
Grant Date -
N/A
app pub date -
Dec 9, 1999
filing date -
Dec 9, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A test system automatically locates impedance mismatched, energy reflection discontinuities (e.g., bridged taps) along a wireline communication link, by coupling a linearly stepped sinusoidal waveform to a measurement location of the wireline link. The applied waveform propagates down the link and is reflected back from the energy reflection discontinuities. A line monitoring receiver coupled to the measurement location samples the response of the line to the swept waveform. A response processor executes a frequency domain reflectometry algorithm to analyze the frequency response of the wireline to the stepped frequency waveform. It then generates an output representative of distances from the measurement location to the bridged taps.
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