Integrated RF loopback test apparatus for redundant data...

Details Integrated RF loopback test apparatus for redundant data... Integrated RF loopback test apparatus for redundant data...

2006-02-07

2006-02-07

Phan, Man U. (Department: 2665)

Multiplex communications

Fault recovery

Bypass an inoperative switch or inoperative element of a...

C370S249000

Reexamination Certificate

active

06996057

ABSTRACT:
A redundant communication system contains a principal transceiver and a back-up transceiver to be controllably substituted for the principal transceiver. A monitor protection switch, which controls swapping the two transceivers, has an RF loopback test circuit that is switchably coupled to whichever transceiver is the back-up. The RF loopback test circuit monitors the operational capability of the back-up transceiver, and provides an indication of its functionality. If the back-up transceiver is defective, corrective action can be taken in advance of a potential operational failure of the principal transceiver. As long as the RF loopback test circuit indicates proper operational capability of the back-up transceiver, the redundant transceiver can be immediately switched in place of the principal transceiver.

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