Faraday MPC-6000, Programming Manual

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APPENDIX A: GLOSSARY
Alarm Signal
. A signal indicating an emergency requiring immediate action, such as
an alarm for fire from a manual station, a waterflow alarm, an automatic smoke
detector, etc.
Alarm Silence Inhibit
. An option that prevents a human operator from silencing the
notification appliances for a preset period of time.
Alarm System
. A combination of compatible initiating devices, control units and
notification appliances designed and installed to produce an alarm signal in the
event of a fire or other condition, as designed.
Alarm Verification
. A preset option that causes the control unit to verify alarms
originated by smoke detectors before indicating an alarm.
Annunciator
. A remotely located, electrically powered display, separate from the
control unit, containing LCDs, LEDs or lamps to indicate the states of the fire alarm
system.
Audible Signal
. A sound made by one or more audible notification appliances, such
as bells or horns, in response to the operation of an initiating device.
Authority Having Jurisdiction (AHJ)
. The organization, office, or individual
responsible for approving equipment, installation or procedures.
Auxiliary Relays
. Control relays that energize only during alarm conditions that are
used to either apply power to or remove power from other equipment during an
alarm condition.
City Tie
. Provides connections for shunt, local energy, central station or remote
station.
Class A Circuit
. An initiating device or notification appliance circuit within which all
components remain fully functional, even though a single open or ground exists in
the circuit.
Class B Circuit
. An initiating device or notification appliance circuit within which
some or all components may be disabled when a single open or ground exists in the
circuit.
DACT
. Digital Alarm Communicator Transmitter (see NFPA 72).
Detector - Smoke, Photoelectric Type
. A detector employing the photoelectric
principle of reflection or obstruction of light by smoke.