Schweitzer Engineering Laboratories, Inc.

Tim L Wells

David M Rector

The present disclosure pertains to systems and methods to selectively interrupt a communication link. In one embodiment, a system may comprise a first communication port and a second communication port, each of which comprises a plurality of differential pairs of electrical wires. A control select circuit may be in communication with the first communication port and the second communication port and may comprise a plurality of solid-state switches operable to transition between a first configuration and a second configuration. In the first configuration the differential pairs of electrical wires are electrically connected to corresponding differential pairs of electrical wires in the second communication port. In the second configuration, the differential pairs of wires are shunted through a resistor to dissipate energy associated with an electrical signal. A control port may be operable to cause the plurality of solid-state switches to transition between the first configuration and the second configuration.

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Pullman, WA, United States of America

Tim L Wells