Section II. DESCRIPTION AND DATA - TM-5-6350-262-14-20009

Section II. DESCRIPTION AND DATA

1-8. Purpose and Use

The processor is used in conjunction with the

the switch and complete the circuit. Upon reinstalla-

receiver (fig. 1-1) to detect ultrasonic energy in the

tion of the cover the tamper switch is reset.

frequency band of 20 kHz to 30 kHz. These

b. Receiver (fig. 1-1). This unit contains an

frequencies are generated inside a protected area

ultrasonic microphone, associated preamplifier and

during attempts at forced penetration. The processor

a GAIN control. .It receives the ultrasonic energy

and receiver detect ultrasonic energy in environ-

generated by attempts at forced penetration for

ments having background energy levels from 50 to 80

processing by the processor. The GAIN control

dB (ref. 0.0002 microbar or 0 dB sound pressure level)

allows individual selection of gain levels for each

and a rectangular volume of approximately 15 x 20 ft.

receiver. These components are housed in a 16 gauge

(ceiling heights 8 to 12 ft.). Multiple receivers may be

welded steel enclosure measuring 6.0 inches wide, 4.8

used (2 to 20) with a single processor for coverage of

inches high, and 2.1 inches deep. The enclosure is

larger volume areas. The processor generates an

painted gray and is marked on the top outer side for

alarm upon detection of four 50 msec duration

two 1/2 inch conduit entrances. The welded steel

energy impulses occurringwith a 15-second period or

enclosure is marked with two pairs of mounting holes

upon detection of continuous ultrasonic energy for a

for use with a special 45 mounting bracket when

period of longer than 4.5 seconds. Detection of forced

angles of 0 or 45 are required. When mounting at a

penetration completes an alarm circuit for signaling

90 degree angle, the special bracket is not required

purposes at the Interior Intrusion Detection System

and two mounting holes are marked in the rear of the

(J-SIIDS) control unit. The overall sensitivity is

enclosure. This unit obtains its power source from

adjustable over a 24 dB range in the processor and a

the processor. Connection to this unit is made by

continuous adjustment of 20 dB at each receiver for a

means of one screw type terminal strip enclosed

total sensitivity range of 50 dB to 94 dB.

within the steel case. Entrance to the unit during

installation, interconnection, and for maintenance

1-9. Description of Equipment

purposes is provided by a cover secured to the box by

two 6-32 x 3/8 inch long screws. The unit is protected

a. Processor (fig. 1-1). The processor contains

with a tamper switch which is closed by fitting the

wide band amplifiers, a detector, a SENSITIVITY

cover in place. During maintenance, the tamper

control, alarm circuits, and a band rejection filter.

switch plunger may be pulled out to actuate the

The rejection filter is used when operating in

switch and complete the circuit. Upon reinstallation

conjunction with the processor/transceiver ul-

of the cover the tamper switch is reset.

trasonic motion signal. The processor is used for

1-10. Diferences Between Models

processing the received signal from the receiver. It is

housed in a 16 gauge welded steel enclosure

This manual covers only one model. There are no

measuring 10.2 inches wide, 9.7 inches high, and 2.1

differences between models.

inches deep. The enclosure is painted gray and is

1-11. Tabuiated Data

marked on the top outer side for two 1/2 inch conduit

Power requirements . . . . . . .20 2 Vdc

entrances. Four mounting holes are provided in the

35ma-processor

rear of the enclosure for securing purposes. The unit

0.5 ma - each receiver

Alarm circuit . . . . . . . . . . . . . no alarm-less than 2K

obtains its +20 2 Vdc power source from the

ohms resistance

J-SIIDS control unit. Connections to the unit are

alarm - mater than 100 K

made by means of two screw-type terminal strips

ohms resistance

enclosed within the steel case. A third screw-type

Weight:

processor.. . . . . . . . . . . . . 6.75lbs

terminal strip facilitates bypassing or incorporating

receiver . . . . . . . . . . . . . ..2.25lbs

the band rejection filter by means of appropriate

depth

height

width

Size:

jumper connections. Entrance to the unit during

2.1"

9.7"

processor. . . . . . . . . .10.2"

installation, interconnections, and for maintenance

2.1"

4.8"

receiver . . . . . . . . . .. .6.0"

non-operating

operating

Environment:

purposes is provided by a cover secured to the box by

temperature range. -20F to + 150F -30F to + 165F

two 6-32 x 3/8 inch long screws. The unit is protected

95% relative

humidity . . . . . . .95% relative

with a tamper switch which is closed when actuated

20g 11

shock . . . . . . . . . . . . . . . . .

by fitting the cover in place. During maintenance the

millisecond

duration

tamper switch plunger may be pulled out to actuate

1-3