e.
Wired so that each sensor and device is annunciated [individually]
[by zone] at the central reporting processor.
2.3.5.3
Fail-Safe Capability
Provide fail-safe capability in critical elements of the IDS. This
shall
include, but not be limited to, capability to monitor communication
link
integrity and to provide self-test. When diminished functional
capabilities are detected, system shall provide annunciation of the
fault.
Fail-safe alarms shall be annunciated to be clearly distinguishable
from
other types of alarms.
2.3.5.4
Line Fault Detection
As a minimum, fault isolation at the systems level shall have the same
geographic resolution as provided for intrusion detection. Communication
links of the IDS shall have an active mode for line fault detection. System
shall be either a static, or dynamic system. In a static system, the
"no-alarm" condition shall always be represented by the same signal, which
shall be different than the signal originally transmitted. The dynamic
system shall represent "no-alarm" with a signal which continually changes
with time.
2.3.5.5
Power Loss Detection
Provide capability to detect when a critical component of the system
experiences temporary or permanent loss of power and to declare an alarm.
Alarm shall be annunciated to clearly identify the component experiencing
power loss.
2.3.6
Self-Test
Provide self-test capability for sensors, [response devices,] display
lights, and other elements which are not inherently self-tested by virtue
of continuous operation. Initiation of a test command shall be by [both
automatic and] manual means. Provide manual sensor test initiation
capability by [both the IDS control unit and at] command elements of the
alarm reporting and display subsystem. Sensor test command signal shall
initiate an intrusion simulation which shall cause the sensor to test as
much of itself, including the transducer, as is reasonable and shall result
in the generation of an alarm condition. [Automatic sensor test command
signals shall be issued by a central unit when a landline is provided from
the sensor or by the sensor RF transmitter when radio transmission is
provided from the sensor. A test initiation signal shall be issued at
specified time intervals.]
2.3.7
Electrical Power
Obtain by the normal commercial or base electrical distribution system.
Power shall be continuously monitored and, if interrupted, automatic
switching from primary to emergency backup sources shall be accomplished
without interruption or degradation of critical system function. Intrusion
alarms shall not be generated as a result of power switching; however, an
indication of power switching and on-line source shall be provided at the
alarm monitor. Upon restoration of prime power, system shall automatically
switch back to the primary source. Failure of an on-line battery shall be
detected and reported as a fault condition.
SECTION 13703N
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