Procedure and apparatus for the protection of a data...

Details Procedure and apparatus for the protection of a data... Procedure and apparatus for the protection of a data...

H - Electricity

02

H

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H02H 3/26 (2006.01) H02H 3/20 (2006.01) H02H 7/20 (2006.01) H04B 3/46 (2006.01) H04B 3/60 (2006.01)

Patent

CA 2015875

ABSTRACT OF THE DISCLOSURE A method and an apparatus for the protection of a data transmission network is disclosed. The protected network consists of a signal bus provided with terminal impedances and connected via impedances to the supply voltage (+VIN) and signal ground (GND), and signal devices which are connected to the bus. To protect the network, the voltages on the bus are monitored, and the bus impedance is measured by means of a test pulse. If either the measured voltages, impedance, or both are outside an allowed range, at least the supply voltage (+VIN) of the signal devices is disconnected.

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