CHAPTER 3 OPERATING INSTRUCTIONS

CHAPTER 3

OPERATING INSTRUCTIONS

Section I. CONTROLS

3-1. General

ment to compensate for changes in environment in

the protected area or during the periods of mainte-

The processor/receiver ultrasonic passive signal

nance.

consists of one processor and from one to twenty

b. Receiver. Each receiver has a GAIN control

receivers. The processor, when operating, is a closed

(R7) (fig. 1-1) which sets the receiver gain level for

unit and contains one SENSITIVITY control that is

preset during the checkout procedures. The re- c.

optimum detection performance. This control is used

only during installation adjustment to compensate

ceiver, when operating, is a closed unit and contains

for changes in environment in the protected area or

a GAIN control that is preset during the checkout

during periods of maintenance.

procedures. There are no operator/crew controls

associated with this equipment.

Table 3-1. Controls

Control

Function

3-2. Controls

SENSITIVITY R62

Sets the processor sensitivity

a. Processor. The processor has a SENSITIVITY

level.

Dial is indexed from 1 to 5.

control (R62) (fig. 1-1) which sets the sensitivity level

Note: Each dial number

of the output from the three broadband amplifier

represents a 6 db change.

stages. This control facilitates sensitivity adjust-

GAIN R7

Sets the receiver gain.

ment of the processor to compensate for the number

Dial is indexed from 1 to 10.

of receivers in the processor/receiver ultrasonic

Note: Gain is down 10 db

when going from 10 to 7 on the

passive signal and the extreme range coverage

dial.

which may be encountered between the receivers.

This control is used only during installation adjust-

Section II. OPERATION UNDER USUAL CONDITIONS

3-3. General

a. Starting Procedure. Control of the

processor/receiver ultrasonic passive signal is by

The usual conditions of operation are during the

means of the J-SIIDS control unit. Refer to TM

absence of normal authorized personnel and the

5-6350-262-14/14.

potential presence of unauthorized personnel in the

b. Initial Adjustments. Initial adjustment of

surveillance area.

SENSITIVITY control R62 (fig. 1-1) (processor) and

3-4. Operation

GAIN control R7 (fig. 1-1) (receiver) was performed

following the installation in Chapter 2. No further

Once the processor and the receivers have been

adjustments are required.

installed and checked out (Chapter 2) the only

c. Operating Procedure. Refer to TM 5-6350-262-

remaining procedure of operation is to establish the

14/14 for operating procedures.

operating time periods for the equipment.

OPERATION UNDER UNUSUAL CONDITIONS

Section Ill.

3-5. Unusual Operating Conditions

for any reason a SYNC pulse is not provided to the

a. Unusual conditions of operation may occur

processor/receiver ultrasonic passive signal, nui

when changes take place in the protected area.

ance alarming will occur. The band rejection filter in

Relocation of metal files, cabinets or partitions may

the processor must be bypassed by use of appropriate

result in changes in the surveillance pattern area.

jumpers on TB3. When the processor/transceiver

Installation of new machinery, intercommunication

ultrasonic motion signal is returned to service, a

devices or faulty operation of existing machinery

SYNC pulse must be provided to the

could result in nuisance alarms.

processor/receiver ultrasonic passive signal and the

b. When a malfunction occurs in the

band rejection filter reinserted in the circuitry.

processor/transceiver ultrasonic motion signal, and

3-1