Plessey PRC 320/1 - Functional Checks

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CHAPTER

THREE

PREVENTIVE

AND

CORRECTIVE

MAINTENANCE

AND

FUNCTIONAL

CHECKS

GENERAL

5.1

The

procedure

given

in

Part

1,

Chapters

Four

and

Five

are

generally

applicable

to

the

PRC320/1-100W,

with

the

exception

that

the

RT220/1

antenna

tuning

unit

is

inoperative

and

thus

its

meter

does

not

indicate

antenna

current.

This

function

is

performed

by

the

РУ1511

meter

when

the

OUTPUT

POWER

switch

is

set

to

FWD.

and

the

function

switch

to

DRIVER.

The

RT320/1

is

still

operative

when

BATT

CHK

is

selected,

however,

and

can

be

used

to

check

the

RT320/1

supply

voltage,

regardless

of

whether

this

is

derived

from

a

battery

or

the

PV1518.

FUNCTIONAL

CHECK

5.2

Before

checking

the

operation

of

the

additional

PRC320/1-100W

equipment,

carry

out

the

procedures

given

in

Part

1,

Chapters

Four

and

Five,

to

ensure

satisfactory

operation

of

the

RT320/1.

Monitoring

of

the

100W

equipment

performance

is

provided

by

the

PV1511

meter

and

its

associated

OUTPUT

POWER

switch,

the

four

positions

of

which

provide

meter

indications

as

follows:-

5.2.1

В.Е.

INPUT

-

the

drive

level

from

the

RT320/1,

which

should

be

approximately

30W

peak.

5.2.2

FWD.

-

the

forward

output

power

into

the

antenna,

which

should

be

between

80W

and

140W,

depending

on

the

supply

voltage,

when

the

antenna

is

accurately

matched.

85

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