Testing alarm system warning devices using event recorders

摘要

Fire alarm and other emergency warning systems typically include annunciator devices 14 such as sounders, speakers or strobe lights and these must normally be checked for acceptable operation on a regular basis. Event recorders 20 are installed to monitor the operation of the annunciator devices of the system and the system is activated in a test to produce physical output from the devices, the physical outputs being recorded by the respective event recorders. An indication is provided by each event recorder according to the physical output of the respective device during the test. An individual can then inspect an event recorder 20 located near to or integral with each annunciator, to check that the respective annunciator has operated correctly. Operation of the annunciator may be assessed by monitoring input or output of the annunciator, such as current levels, or audible or visible output. The outputs of the event recorders may by transmitted to a main panel via lines 50 and transponders 10.