EST EST3X - Glossary

EST3X Technical Reference Manual 277
Glossary
T
erm Definition
active
Points that are in an alarm state.
activate
To turn on or energize. Pertains to outputs (including logical
outputs).
alarm
The state of a fire alarm initiating device that has detected a
smoke or fire condition. The state of a security device that has
been triggered.
alarm silence timer
A panel option that automatically silences the notification
appliance circuits (NACs) after a preprogrammed time limit
after the last alarm.
AND statement
A system input defined in the 3-SDU that activates when all the
input conditions as indicated in its AND statement list, are
active.
card
Modules that connect to the electronics chassis and control-
display modules.
Class A IDC
A circuit, connected directly to initiating devices that signals a
trouble condition upon an open condition on the circuit. All
devices wired on the circuit to continue to operate in the event
of a single open. Similar to Style D & E integrity monitoring.
Class A NAC
A circuit, connected directly to notification appliances that
signals a trouble condition upon an open or shorted condition
on the circuit. All appliances wired on the circuit to continue to
operate in the event of a single open. Similar to Style Z integrity
monitoring.
Class B IDC
A circuit, connected directly to initiating devices that signals a
trouble condition upon an open condition on the circuit. All
devices wired on the circuit to continue to operate up to the
location of a break. Similar to Styles A, B, C, & D integrity
monitoring.
Class B NAC
A circuit connected directly to notification appliances that signal
a trouble condition upon an open or shorted condition on the
circuit. All appliances wired on the circuit to continue to operate
up to the location of a break. Similar to Styles W, X, and Y
integrity monitoring.