A-A-52317A
2. SALIENT CHARACTERISTICS
2.1 Environmental requirements. The components shall operate as specified herein at temperatures from 32 to 120 °F and at relative humidities up to 85 (±5) percent.
2.2 Major components.
a. Control-Communicator, Digital (hereinafter called “DCC”)
b. Keypad, Control-Communicator, Programming (hereinafter called “keypad”)
c. Expansion Module, Zone, Control-Communicator (hereinafter called “expansion module”)
d. Transmission Device, Alarm, Cellular (hereinafter called “CATD”)
Note: The DCC and CATD may be separate components which work together in an interactive system or a single integrated component.
2.3 Control-Communicator, Digital:
2.3.1 Primary function. The primary function of the DCC shall be to monitor the outputs of external devices for the changes specified herein and provide notification of these changes to one or more remotely located monitoring consoles by use of the public switched telephone network. Each device output (also referred to as a zone) will present one of the following conditions: (a) normally open relay contacts which close on alarm or change of status; (b) normally closed relay contacts which open on alarm or change of status.
2.3.2 Number of zones. The DCC shall support a minimum of eight fully programmable hardwired zones and be expandable to support at least fifty-six additional zones. The additional zones may be connected to the DCC by additional hardwired zone inputs within the DCC or by means of a multiplexed polling loop using one or more expansion modules (see 2.3.23) to which the device outputs are hardwired. Any hardware component required to implement the polling loop, other than the expansion modules, shall be integral to the DCC or delivered with the DCC designed for installation therein.
2.3.3 Zone response time. The zone response time (the time a change at one of the device outputs must persist before the DCC will communicate the change) shall be not less than 100 and not greater than 500 milliseconds.
2.3.4 Line supervision. Line supervision between the DCC and device outputs shall be accomplished using current supervision through end-of-line (EOL) resistors located at the device outputs or by any other line supervisory technique which provides equal or greater line security.
2.3.5 Partitions. The DCC shall be configurable into a minimum of 6 partitions. Partitions shall function like separate premises, with separate zones and users. Each zone shall be assignable to any of the partitions. Users shall be able to perform system functions, such as arming and
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