Table of Contents
Advertisement
Installation and Operation Manual
Appendix‐E: Glossary and Acronyms
Alarm Signal. A signal indicating an emergency requiring immediate action, such as an alarm for fire from a
manual station or an automatic smoke detector.
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 panels, and notification appliances
designed and installed to produce an alarm signal in the event of a fire.
Alarm Verification. A preset option that causes the control panel to verify alarms originated by smoke detectors
before indicating an alarm.
ALU. Addressable Loop Unit.
AMI. Advanced Machine Interface.
Annunciator. A remotely located, electrically powered display separate from the control panelwith LEDs or
lamps to indicate the states of the fire alarm system.
Audible Signal.A sound produced by one or more audible notification appliances, such as bells or horns, in
response to the operation of an initiating device.
Class A Circuit. An initiating device or notification appliance circuit within which all components remain fully
functional, even though a single open or a ground is present in the circuit.
Class B Circuit. An initiating device or notification appliance circuit within which some or all components may be
disabled with a single open or a ground exists in the circuit.
CPU. Central Processing Unit.
Detector ‐ FirePrint™. An intelligent fire detector that blends photoelectric, thermal, and neural network
technologies for superior protection without false alarms.
Detector ‐ Smoke, Photoelectric Type. A detector using the photoelectric principle of reflection or obstruction
of light by smoke.
Detector ‐ Thermal Type. An addressable thermal sensor programmable as either a fixed temperature (135° F)
or as a rate of rise detector.
Enable / Disable. Refers to the state of individual circuits (inputs and outputs) or logic functions, regardless of
the presence of its corresponding modules.
End Of Line (EOL). A device used to terminate a supervised circuit.
FACP. Fire Alarm Control Panel.
64
Advertisement
Table of Contents
