NAVELEX EE 181-AA-OMI-040/E121 R1860 M9443
Section I. OPERATING PROCEDURES
CONTROLS AND INDICATORS. There are no
EMERGENCY OPERATION. Operation with
operator controls or indicators applicable to this
incomplete surveillance coverage or faulty tamper circuit
should be held to a minimum. Extended periods of
operation on battery (stand-by) power should be avoided.
NORMAL OPERATING PROCEDURES. The
Passive Ultrasonic Sensor is operational after being
installed, tested, and interconnected with the J-SIIDS
Relocation of files, cabinets and partitions, or operation
Control Unit. Since the startup and shut-down of the
of new or faulty equipment with the protected area, will
sensor are dependent on power from the Control Unit, no
affect system sensitivity.
operating procedures are required.
Section II. THEROY OF OPERATION
monitoring the status of the protected area. Figure 2-1 is
FUNCTIONAL DESCRIPTION. The Passive
a simplified block diagram. Each Processor can handle
Ultrasonic Sensor provides an intrusion alarm signal to
up to twenty Receivers; however, the total length of
the J-SIIDS Control Unit when it detects and processes
interconnecting cable is limited to 500 feet (152.4 m).
an ultrasonic signal meeting the necessary standards.
The Processor and Receiver/housings are each
An attempt to penetrate the secure area through metal or
protected with a cover tamper switch. The tamper switch
masonry walls, ceilings, floors, or insulated windows and
activates an alarm when a cover is raised more than 1/4
vents by means of hammers, drills, saws, or torches will
inch (0.635 cm) from the closed position. Penetration
generate an ultrasonic signal that is sensed by the
through a wooden wall may not generate enough
The Receiver routes the signal to the
ultrasonic energy to activate the alarm. To protect such
Processor, where it is amplified, filtered, and used to
an area, the Ultrasonic Motion Sensor may be used as a
activate an alarm circuit. The alarm signal is then sent to
complement to the Passive Ultrasonic Sensor.
the Control Unit so it can be used in