Glossary Glossary
132 NFS-3030 Programming Manual P/N 51345:C 11/4/03
control modules or transponder points.
new device A device connected to the control panel, but not in program memory.
non-latching An attribute of a device that follows the state of the fire alarm system. That is, if a
device is non-latching, it returns to its normal state automatically when the condition clears.
Notification Appliance Circuit see NAC.
obscuration A reduction in the atmospheric transparency caused by smoke, usually expressed in
percent per foot.
output circuit A control module connected to the SLC, a device connected to one of the four
NACs, or a Panel Circuit, such as an ICM-4.
Panel Circuit A circuit on a module connected to the control panel through connectors on the
control panel. The control panel identifies a Panel Circuit with the addressing convention Px.x. For
example P1.4, indicates Panel Circuit 4 on the first-position module connected to the control panel.
point A system memory address occupied by an addressable SLC device, Software Zone, or
annunciator. For example, the control panel considers “L01M102”, a module on loop 1 at address
102, as a point.
panel sounder The piezo sounder on control panel, that pulses when troubles and alarms occur.
primary zone The zone in the first position of a point’s zone map. The FACP looks at this zone for
certain functions, such as some Cross Zone activations or Walk Test participation.
Silence Inhibit Timer A user-defined timer that disables the
SIGNAL SILENCE key function for the
programmed time (0-300 seconds) when a fire alarm occurs. All subsequent alarms can be silenced
immediately.
SLC (Signaling Line Circuit) A physical wire loop used to connect addressable detectors and
modules to the control panel.
General Zone A label, internal to the fire alarm system, assigned to a group of addressable
devices.
Switch Inhibit A software function that allows the programming of control modules, NACs, and
Panel Circuits so an operator cannot manually activate NACs. With Switch Inhibit enabled, an
operator cannot manually activate the NACs from the control panel.
System Normal message A message that displays on the second line of the LCD display during
normal operation of the control panel.
System Reset Pressing the System Reset fixed function key will clear all latched alarms and other
events if the initiating condition is gone. LEDs associated with these events will turn off.
Unacknowledged events will not prevent reset from functioning. If alarms or other off-normal
events exist after reset, they will resound the system. The System Reset key will not function if the
programmable Silence Inhibit timer is running.
The System Reset key will not immediatedly silence active outputs. If the Control-by-event
programming for the output evaluates false after reset, the output will deactivate. (Typically this is
30 seconds local, 60 seconds network.)
Terminal Interface EIA-232 bidirectional serial port used for upload and download functions.
Tracking An attribute of a device that allows it to enter an active state when a condition causes its
activation, then to return from an active to an inactive state when the condition causing its
activation is corrected.
Type Code A Type Code is a software function that specifies the function of a detector, control
module, monitor module, transponder point, NAC, or Panel Circuit point. (You can select a Type
Code while programming a point). The Type Code specifies what action the control panel takes
when the point activates. For example, when a monitor module with
EVACUATE as a Type Code
activates, the control panel activates all outputs, as if someone pressed the
DRILL key.
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