Test initiation apparatus with continuous or pulse input

Details Test initiation apparatus with continuous or pulse input Test initiation apparatus with continuous or pulse input

1989-03-03

1990-02-13

Crosland, Donnie L.

Communications: electrical

Condition responsive indicating system

With particular system function

340515, 340527, 34030915, 340628, 340629, 340630, 34082569, 34082572, G08B 2900, G08B 1710, H04Q 914

Patent

active

049010565

ABSTRACT:
A system for testing a remotely located sensing unit includes a photosensor located within the sensing unit. A control beam of incident electromagnetic energy can be provided from a remotely located portable source such as a flashlight. Directing the beam of radiant energy from the flashlight against the sensor in the unit causes the unit to initiate a test sequence. The unit can be equipped with a photo-detector to terminate an alarm generated in response to a sensed condition. The unit can include a sonic detector. Control circuitry in the unit can decode a sensed encoded incident beam to minimize false tests or to provide multiple remotely initiated functions.

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