Upon detecting such changes, the sensor shall transmit an alarm signal to
the alarm annunciation system. The sensor shall detect a standard intruder
moving perpendicular through the sensor's detection pattern at a speed of
0.06 to 7.6 m/s 0.2 to 25 feet/second. The sensor shall comply with 47 CFR
15, Subpart F. The sensor's coverage pattern shall be as shown. Multiple
sensors shall be able to operate in adjacent zones without interfering with
each other. The sensitivity of the sensor shall be adjustable by controls
within the sensor. The controls shall not be accessible when the sensor
housing is in place. The sensor shall be adjustable to obtain the coverage
pattern shown.
2.7.2.1
Test Indicator, Monostatic
The sensor shall be equipped with an LED walk test indicator. The walk
test indicator shall not be visible during normal operations. When
visible, the walk test indicator shall light 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.
2.7.2.2
Remote Test, Monostatic
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.
2.7.3
Strain Sensitive Cable Sensor
The strain sensitive cable sensor shall detect induced mechanical
vibrations in the fence structure and fabric resulting from climbing,
cutting, and lifting caused by a standard intruder, while rejecting other
vibration frequencies. Upon detecting intruder-based frequencies, the
sensor shall transmit an alarm signal to the alarm annunciation system.
The sensor shall consist of coaxial transducer cable mounted to the fence
structure including fabric and a sensor signal processor. The sensor
element shall be coaxial transducer cable. The sensitivity of the
transducer cable shall not vary more than 10 percent over the length of the
cable. The exterior jacket of the cable shall be ultraviolet radiation
resistant. Where required, the sensor manufacturer's nonsensitive lead-in
cable, shall be supplied as part of the sensor system. The transducer
cable shall be supervised by the signal processor to protect against
tampering. The sensitivity of the sensor shall be adjustable by controls
within the sensor signal processor. The controls shall not be accessible
when the sensor interface module's housing is in place. Ultraviolet
radiation resistant carbon impregnated plastic tie wraps shall be provided
for installation of the sensor cable to the fence. The sensor shall cover
up to a 92 m 300 foot zone and as shown.
2.7.3.1
Test Indicator, Strain Sensitive
The sensor may be equipped with a test indicator if it is an integral
function of the sensor signal processor.
SECTION 13720A
Page 62
Previous Page
