Circuit configuration for routine testing of the clock supply of

Details Circuit configuration for routine testing of the clock supply of Circuit configuration for routine testing of the clock supply of

1988-09-14

1990-05-01

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 13, H04J 306

Patent

active

049224891

ABSTRACT:
A circuit configuration for the routine testing of the clock supply of a large number of digital TDM telecommunication units operated with the same clock, wherein a clock supply with stand-by generator through a corresponding arrangement of several monitor circuits and arrangements of on/alter switches, the operatability of the monitor circuits themselves can be tested so that on routine testing independent of the switching position of a change-over switching device effective upon switching a generator from stand-by operation to active operation respectively the same generator always acts upon the partial distribution system.

REFERENCES:
patent: 3803568 (1974-04-01), Higashide
patent: 4254492 (1981-03-01), McDermott, III
patent: 4480198 (1984-10-01), Gass
patent: 4574377 (1986-03-01), Miyazaki et al.
patent: 4635249 (1987-01-01), Bortolini et al.

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