frequencies. Upon detecting such frequencies, the sensor shall transmit an
alarm signal to the alarm annunciation system. The sensor shall consist of
a sensor signal processor and shock vibration sensor elements that are
designed to be rigidly mounted to the structure being protected. The
sensor signal processor shall process the signals from the sensor elements
and provide the alarm signal to the alarm annunciation system. The sensor
element shall be a multi-conductor cable with shock vibration sensors
mounted at regular intervals. The exterior jacket of the cable shall be
ultraviolet radiation resistant. Where required, the sensor manufacturer's
non-sensitive lead-in bale shall be supplied as part of the sensor system.
The sensor 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. Ultraviolet radiation
resistant carbon impregnated plastic tie-wraps shall be provided for
installation of the sensor cable to the fence, concertina, barbed wire or
other media. The sensor shall cover up to a 300-meter 90-foot zone.
2.7.12.1
Test Indicator, Mounted Vibration Sensor
The sensor may be equipped with a test indicator if it is an integral
function of the sensor signal processor
2.7.12.2
Remote Test, Mounted Vibration Sensor
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.
2.7.13
Video Motion Sensor (Exterior)
**************************************************************************
NOTE: Video motion sensor systems require inclusion
of Section 16751A CLOSED CIRCUIT TELEVISION SYSTEMS
in the project.
**************************************************************************
The video motion sensor shall detect changes in the video signal within a
user defined detection zone. The system shall detect changes in the video
signal corresponding to a standard intruder moving within the defined
detection zone and wearing clothing with a reflectivity that differs from
that of the background scene by a factor of 2. Signal processing
techniques shall be provided to eliminate non-alarm background motion such
as light changes, trees blowing, and birds. Upon detecting such changes,
the sensor shall transmit an alarm signal to the alarm annunciation system.
The sensor shall include the controls and method needed by the operator to
define and adjust the sensor detection zone within the video picture. The
number of detection zones, the size of the detection zones, and the
sensitivity of the detection zones shall be user definable. The sensor
shall accommodate multiple video inputs and have the capability of modular
growth. The video inputs shall accept composite video as defined in EIA 170.
The sensor shall not require external sync for operation. One alarm
output shall be provided for each video input. The number of video inputs
and alarm outputs shall be as shown. Sensor equipment shall be rack
mounted in a standard 480 mm 19 inch rack as described in EIA ANSI/EIA-310-D.
The rack shall include hardware required to mount the sensor components.
SECTION 13720A
Page 67
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