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US 6,647,065 B1Granted
Process aimed at the extraction of electrical signals, without breaking a line pair
AssigneeFrance Telecom
InventorJean-Paul Auvolat
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AssigneeFrance Telecom
InventorJean-Paul Auvolat
Estimating the term…
Process aimed at the extraction of electrical signals emanating from the two ends of a two wire link between two installations exchanging data, wherein a probe comprising an attenuation cell is plugged in on either side of a break point situated on the line pair, then the connections thus established are isolated in such a way as to transfer the signals to the attenuation cell, the attenuation cell is activated by progressive withdrawal of active components, high-impedance signals are tapped off at the two ends of the attenuation cell, and signals which are images of the electrical signals dispatched by one or other of the ends of the line pair are obtained as output from the attenuation cell, after analogue calculation based on subtraction of the signals and multiplication by a constant which is directly related to the value of the attenuation of the cell.
A process for extraction of electrical signals emanating from ends of a two wire link having a line pair connected between two installations exchanging data, comprising the steps of plugging a probe with an attenuation cell on either side of a break point situated on the line pair, then isolating the connections thus established in such a way as to transfer the signals to the attenuation cell, activating the attenuation cell, tapping off high-impedance signals at two ends of the attenuation cell, and obtaining signals which are images of the electrical signals dispatched by one or other of the ends of the line pair as output from the probe after analogue calculation based on subtraction of the electrical signals and multiplication by a constant which is directly related to an amount of the attenuation of the cell.
Dependencies are inferred from the claim text.