Apparatus and method for assessing leakage from cable networks
AssigneeVerizon Laboratories Inc.
InventorsWarner George Harrison, John Winsor Lovell
Life of this patent
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Abstract
An apparatus for assessing signal coupling and radiation from cable networks by exciting the network with multiple broadband signals modulated by a common source, the networks having a plurality of channels, including a noise generator to generate a plurality of test signals, a plurality of modulators, each coupled to one of the plurality of channels, for modulating the plurality of test signals, and a control apparatus coupled to the plurality of modulators for controlling coupling and decoupling of each of the plurality of channels to the signal generating means.
Claims22
An apparatus for assessing signal leakage in a telephone network having a plurality of channels over which audio signals are transmitted, the apparatus comprising:
- a signal generator providing a plurality of test signals to the plurality of channels at a signal level that is below a level that would cause interference to the audio signals transmitted over the telephone network;
- a channel control for selectively connecting and disconnecting each of said test signals to each of the plurality of channels so as to enable the signal leakage from a selected number of the plurality of channels to be assessed,
- wherein the signal leakage from each of the selected number of channels is assessed simultaneously and is assessed without disrupting the transmission of audio signals over the selected number of channels.
An apparatus for assessing signal leakage in a telephone network having a plurality of channels, comprising:
- a signal generating means for generating a plurality of broadband test signals;
- a plurality of modulators, each coupled to one of the plurality of channels, for simultaneously exciting said plurality of channels with said plurality of test signals;
- a modulation source coupled to the plurality of modulators for modulating said plurality of test signals;
- and
- control means coupled to said plurality of modulators for selectively coupling and decoupling each of the plurality of channels to said signal generating means so as to enable the signal leakage from a selected number of the plurality of channels to be assessed.
A method for assessing signal leakage in a telephone network having a plurality of channels over which telephony signals are transmitted, comprising:
- generating a plurality of test signals;
- modulating each of said plurality of test signals with a common modulation source;
- selectively providing each of said plurality of test signals to the plurality of channels;
- assessing test signal leakage from the plurality of channels without disrupting the transmission of telephony signals;
- and
- measuring test signal coupling to at least one of the plurality of channels.
Dependencies are inferred from the claim text.