Alarm Related Terms

Explain alarm installation setting terms meaning. Technology of alarm detectors.
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vedard
Posts: 164
Joined: Wed Mar 05, 2014 8:17 am

Alarm Related Terms

Post by vedard » Mon Feb 20, 2017 2:40 pm

The security alarm device is designed and produced according to National Electrical Code (NEC), ANSI/TIA/EIA standards of residential security and commercial security. There are some important terms we should know and understand to help us properly using the security alarm system.
Bus: An electrical conductor or set of conductors that serve as a common connection for electrical circuits.
Data bus: Conductors or cable that is employed to transfer data and control signals.
Central station: An alarm monitoring facility which receives and acts upon signals transmitted to them by subscribers alarm systems.
Chime: An audible signal with a rhythmic tone used to annunciate a change in status of an alarm system, such as the opening of a door.
Communicator format: The established communications protocol, designated by control panel programming, that will be used for communications between the alarm system's digital communicator and the receiver at a monitoring facility.
Contact ID: A relatively fast DTMF communications format developed by Ademo used by alarm system digital communicators for information exchange with a remote monitoring facility.
EOL: Abbreviation for end of line.
DTMF: Abbreviation for dual tone multi-frequency.
Dual Tone multi-frequency: (DTMF) Two simultaneous audio frequencies used to control telephone switching equipment, such as dialing, and other control circuitry.
Duress code:
(1) A code, password or pass phrase used by an individual when that person is being forced to gain access to protected area or system.
(2) An special access code, which initiates a silent alarm, used when a person is being forced to disarm an alarm system.
End of line relay: A device used to supervise or monitor power supplied to powered sensors on an normally open loop or zone, such as 4-wire smoke detectors.
End of line resistor: A termination resistor placed a the end of a supervised zone or loop.
End of line supervision: A method of monitoring the integrity of a zone or loop that usually employs a termination resistor or a specified value.
Event log: A file containing a limited history of certain actions or mode changes that have occurred on an alarm system.
Fire loop: A protective circuit or zone which supports fire detection or fire alarm initiation devices, such as smoke detectors, pull stations, etc.
Force arm: A feature supported by some control panels that automatically bypasses any open or faulted zones which enables arming of the alarm system.

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