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Section II. DESCRIPTION AND DATA
1-8. Purpose and Use
The processor is used in conjunction with a detector (fig. 1-1) for detecting vibrational energy in the frequency band of 10
kHz to 15 kHz. These frequencies are generated inside a protected area during attempts at forced Penetration. The
processor and detector sense vibrational gravitational accelerations (measured in g) with a maximum sensitivity of 0.01g.
Multiple detectors may be used (one to twenty) with a single processor for coverage of multiple areas of potential forced
entry. The processor generates an alarm upon detection of four 100 millisecond duration periods of vibration or upon
detection of a continuous vibration for a period of 4.5-seconds or longer. Detection of vibration completes the alarm
circuit for signaling purposes at the (J-SIIDS)control unit. The overall sensitivity is adjustable over a 24 dB range in the
processor and a continuous adjustment of 20 dB at each detector for a total sensitivity range of 0.01 g to 1.6 g.
1-9. Description of Equipment
a. Processor (fig. 1-1). The processor contains wide band amplifiers, a detector, a SENSITIVITY control, alarm
circuits and a tamper switch and is used to process the received signal from the detector. It is housed in a 16 gauge
welded steel enclosure measuring 10.2 inches wide, 9.7 inches high, and 2.2 inches deep. The enclosure is painted gray
and is marked on the top outer side for two 112 inch conduit entrances. Four mounting holes are provided in the rear of
the enclosure for securing purposes.  The unit obtains its +20 +2 Vdc power source from J-SIIDS control unit.
Connections to the unit are made by means of two screw-type terminal strips enclosed within the steel case. Entrance to
the unit during installation, interconnections, and for maintenance purposes is provided by a cover secured to the box by
two 6 - 32 x 3/8 inch long screws. The unit is protected with a tamper switch which is closed when actuated by fitting the
cover in place. During maintenance the tamper switch plunger may be pulled out to actuate the switch and complete the
circuit. Upon reinstallation of the cover the tamper switch is reset.
b. Detector (fig. 1-1). The detector contains a vibration pickup assembly, an associated preamplifier and a GAIN
control and is used to sense vibration acceleration energy generated by attempts at forced penetration for processing by
the processor. The GAIN control allows individual selection of gain levels for each detector. These components are
housed in a 16 gauge welded steel enclosure measuring 5.6 inches wide, 4.8 inches high, and 2.2 inches deep. The
enclosure is painted ``ray and is marked on the top outer side for two 1/2 inch conduit entrances. The vibration pickup
assembly fits in an opening in the rear of the enclosure and this assembly contains four 0.28 inch diameter holes for
mounting purposes. The enclosure is secured in place by the fastening of the vibration pickup assembly to the surface
that is being protected. This unit obtains its power source from the processor. Connection to this unit is made by means
of one screw type terminal strip enclosed within the steel case. Entrance to the unit during installation, interconnection,
and for maintenance purposes is provided by a cover secured to the box by two 6-32 x 3/8 inch long screws. The unit is
protected with a tamper switch which is closed by fitting the cover in place. During maintenance, the tamper switch
plunger may be pulled out to actuate the switch and complete the circuit. Upon reinstallation of the cover the tamper
switch is reset.
1-10. Differences Between Models
This manual covers only one model. There are no differences between models.
1-11. Tabulated Data
Power requirements ....................... 20 2 Vdc
35 ma - processor
0.5 ma - each detector
Alarm circuit ................................... no alarm - less than 2 K ohms
alarm - greater than 100 K
Weight:
processor .............................. 6.76 lbs.
detector ................................. 225 lbs.
Size:
width
height
depth
processor ............................... 10.2"
9.7"
2.2"
detector ................................. 6.0"
4.8"
2.2"
Environment:
operating
non-operating
temperature range ................. 20 to + 150
F
F
30 to +165
F
F
humidity ................................ 95% relative
95% relative
shock ....................................
20g, 11 millisecond
..............................................
duration
1-3

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