Motorola 9501 Technical Information download pdf (Page 7)

essential

to

tuning

and

checking'

Also

included

in

the

test

set

is

a crystal

oscillator

and

multi-

pif"t,

With

the

aid

of

an

associated

transmitter

ity"t"fandan

applicable

IF

crystalthe

test

oscil-

laior

ot

peaking

generator

maybe

usedas

a source

;;-;;";

"'ig.'"t

io-'

zs-so

tnc"

72-?6

mc

'

z.'d

t52-

iZ+

-..

i"..i,'e"

alignment'

The

test

set

may

"t"o

b"

used

as

a

field

strength

meter

for

mea-

surement

of

relative

transmitter

field

strength

in

these

frequency

ranges'

Other

functions

which

*"y

U.

performed

*1th

ttt"

test

set

are

relative

.odio

*L""urement,

receiver

quieting

rneasure-

rn".rt,

,t"rr"mitter

filament

measurement

and

plate

voltage

measurement'

The

P-8501-A

and

P-850I

-A-Z

Y

may

be

used

with

the

P-?208

and

P-?208-A

RF

Durnmy

Loads

to

measure

RF

power

"*p"t.

The

P-720&

and

P-7208-A

are

optional

tesi

set

accessories

available

at

extra

cost'

3.

CONTROLS

The

following

controls

are

provided

on

the

P-8501-A

and P--8501-}--Z41V

Test

Sets'

Their

general

functions

are

as

designated'

The

parti-

cular

circuits

which

can

be

measured

with

these

Te

st

Sets

will

depend

on

the

equipment

being

te

sted

'

Refet

to

the

associated

instruction

manual

of

this

equipmentfor

particular

meter

functions

ina

spe-

cific

aPPlication.

(3)

0-50

ua.:

this

switch

setting

is

used

when

measuring

very

small

currents'

lts

chief

appli-

cations

are

withthe

P'7ZOB

Series

Durnmy

Loads'

and

with

DELUXE

and

older

line

MOTOROLA

equipment.

Used

to

provide

Proper

filament

voltage

for

6,

lZ

ot

24

volt

crystals

which

are

to

be

used

with

the Test

Set

oscillator'

e.

6-IZ

CRYSTAL

srnTEEjlti:I-

f.

METER

SELE

CTOR

S*itj!:-xi""-!:

titigl

g.

ON-OFF

Switch

Controls

battery

Power

to

Test

Set

peaking

generator.

h.

ADJ.

Control

Allows

fine

frequency

adjustment

of

Test

Set

crystal

oscillator.

i.

OSC

TUNE

Control

Provide

s

circuit

specific

equiPment'

each

switch

Position

ment

being

tested.

J.

ATTENUATOR

Control

selection

when

metering

The

particular

function

of

will

dePend

uPon

the

equiP-

a.

GRID

CURRENT

-METER

-F

IELD

STRENCTH

Selector

Switch

(I)

GRID

CURRENTposition:

measures

grid

current

of

internal

test

set

oscillator'

(2)

METER

position:

used

for

general

metering.

(3)

FIELD

STRENGTH:

used

primarilv

to

-.""o".

relative

signal

radiation

of

a transmitter

'

METER

PoLARITT-E-1!9h

Allows

reversing

of

meter

polarity

c. XMTR

ON

Switch

Provides

a Test

Set

controlforkeyinga

trans-

mitter

being

tested

d.

(1)

REC

position:

used

primarily

for

re-

ceiver

metering

(Z)

XMTR

position:

used

primarily

for

t,ransmitter

metering

Allows

peaking

of

crystal

oscillator

plate

cir -

cuit

to

provide

maximum

oscillator

output'

J_-

b.

Provides

adjustment

of

peaking

generator

output

from

0

to

more

than

800

microvolts'

1.

FUNCTIONS

NOTE

The

followi.rg

t""t

S"tfunctions

which

do

not

bear

asterisk

suffixes

are

applicable

to MOTOROI,A

equipment

of

aI1

frequency

ranges.

Those

functions

designated

-*-

will

apply

only

to

25-50

tnc"

72-76

rnc'

and

l52-l?4

mc'

equipment'

Designations

-**-

refer

to

450-4i0

mc'

equipment

only'

a.

Mete

ring

(l)

DISPATCHER

and

"RESEARCH"

Line

EquiPment

(")

PlacetheREC'

-XMTR'-0-50

switch

in

the

REC.

or

XMTR'

position'

depending

upon

whether

a transmitter

or

receiver

is

being

me-

tered.

J

8/52

-2-

54P891690-B

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