between the leaky coax transmit and receive cables caused by the movement
of a standard intruder within the sensor's detection pattern. Upon
detecting such changes, the sensor shall transmit an alarm signal to the
alarm annunciation system. The sensor shall detect a standard intruder
moving through the sensor's detection pattern at a speed of 0.06 to 7.6 m/s
0.2 to 25 feet/second. The transmit and receive cables shall be ported
coaxial cables designed for direct burial. The sensor's detection pattern
shall be as shown. The sensitivity of the sensor shall be adjustable by
controls within the sensor signal processor. The controls shall not be
accessible when the sensor signal processor's housing is in place.
2.7.10.1
Test Indicator, Buried Ported Cable
The sensor may be equipped with a test indicator if it is an integral
function of the sensor signal processor.
2.7.10.2
Remote Test, Buried Ported Cable
A remote test capability shall be provided. The remote test hardware may
be integral to the sensor or a separate piece of equipment. The remote
test shall be initiated when commanded by the alarm annunciation system.
The remote test shall excite the sensing element and associated electronics
causing an alarm signal to be transmitted to the alarm annunciation system.
The sensor stimulation generated by the remote test hardware shall simulate
a standard intruder moving within the sensor's detection pattern.
2.7.11
Photo-Electric Sensor (Exterior)
The photo-electric sensor shall detect an interruption of the light beam
that links the transmitter and receiver caused by a standard intruder
moving at a speed of less than 2.92 m/s 7.5 feet/second through the beam.
Upon detecting such an interruption, the sensor shall transmit an alarm
signal to the alarm annunciation system. The sensor shall use a pulsed
infrared light source. Multiple sensors shall be able to operate within
the same zone without interfering with each other. The coverage pattern
shall be as shown. The sensitivity of the sensor shall be adjustable by
controls within the sensor signal processor. The controls shall not be
accessible when the sensor signal processor's housing is in place.
2.7.11.1
Test Indicator, Infrared Perimeter Sensor
The sensor may be equipped with an LED walk test indicator. The walk test
indicator shall not be visible or audible during normal operations. When
testing, the walk test indicator shall activate when the sensor detects an
intruder. The sensor shall either be equipped with a manual control,
located within the sensor's housing, to enable/disable the test indicator
or the test indicator shall be located within the sensor housing so that it
can only be seen when the housing is open or removed.
2.7.11.2
Remote Test, Infrared Perimeter Sensor
The sensor may incorporate remote test if it is an integral function of the
sensor.
2.7.12
Mounted Vibration Sensor
The fence vibration fence sensor shall detect induced mechanical vibrations
in the fence structure and fabric resulting from climbing, cutting, and
lifting caused by a standard intruder while ignoring all other vibration
SECTION 13720A
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