Method and apparatus for signal transmission regulation in diffe

Details Method and apparatus for signal transmission regulation in diffe Method and apparatus for signal transmission regulation in diffe

1986-06-16

1988-10-25

Griffin, Robert L.

Telecommunications

Transmitter and receiver at separate stations

Having measuring, testing, or monitoring of system or part

455 50, 455214, H04B 1700, H04B 110

Patent

active

047809086

ABSTRACT:
Method and apparatus for the regulation of a modulated signal transmitted from a transmitter (E) to a receiver (R) in a differential protection system for an electrical installation. The invention lies in the regulation of the frequency spectrum of the modulated received signal (SMR). The presence of a fault in the electrical installation in this spectrum of low frequency components is attributed to presence of noise bursts in transmission affecting the received signal (SMR).

REFERENCES:
patent: 4401860 (1983-08-01), Walls
patent: 4491968 (1985-01-01), Shimp et al.
patent: 4524446 (1985-06-01), Sun et al.
patent: 4599615 (1986-07-01), Umetsu

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