Constant carrier watchdog

Details Constant carrier watchdog Constant carrier watchdog

1985-12-23

1988-08-23

Griffin, Robert L.

Pulse or digital communications

Repeaters

Testing

375 94, 455161, H04L 2710

Patent

active

047666013

ABSTRACT:
A constant carrier watchdog circuit for an r.f. modem detects an anomalous constant "carrier on" condition in the modem. In response to this anomalous condition a signal is generated and output to the modem. The signal causes the carrier frequency to shift out of the data channel frequency bands so that the anomalous modem does not affect other users on a telecommunication network.

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patent: 4566111 (1986-01-01), Tanagawa
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