Method for detection of a shielding fault in a multiwire cable

Details Method for detection of a shielding fault in a multiwire cable Method for detection of a shielding fault in a multiwire cable

2005-08-30

2005-08-30

Deb, Anjan (Department: 2858)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Parameter related to the reproduction or fidelity of a...

C324S539000

Reexamination Certificate

active

06937029

ABSTRACT:
This invention relates to a method for detection of a shielding fault in a multiwire cable forming part of a communication network, during functional operation of the said network, the said cable (10) transferring a multiframe signal S(t), which comprises the following steps:a disturbing signal I(t) is injected into the said cable through an injection clamp (14) for a determined time T,when an item of equipment (12) receives the signal S(t), the number N of frames in fault during the injection period of the disturbing signal I(t) is counted,it is decided that there is a shielding fault in this cable if N/T≦TEPmax, where TEPmaxis the maximum packet error rate to be guaranteed.

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French Preliminary Search Report, FR 0212671, French filing date Oct. 11, 2002, date Search Report mailed-Jul. 4, 2003.

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