Heathkit IT -3120 User Manual

Heathkit IT -3120

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FINAL

WIRING

Refer

to

Pictorial 12 (on

Page

16)

for

the

following

steps.

Connect

the

red

wire

coming

from

clamp

AD

to

the

positive (+)

terminal

of

the

meter

(S-l).

Connect the black

wire

coming

from

clamp

AD

to

the

negative

(-)

term

i nal

of

the

meter

(S-l).

( ) Connect

the

black

wire

coming

from

clamp

AG

to

the

lug

of

jack

BB (S-3) .

Connect the

white

wire

coming

from

clamp

AG

to

the

lug

of

jack

BC (S-4).

Connect

the

wires

coming

from

clamp

AF

as

follows:

Red

wire

to

the

lug

of

jack BD (S-4).

Green

wire

to

the

lug

of

jack BE (S-2).

White-red

wire

to

lug 1

of

battery

holder

BG

(S-l).

White

-black

wire

to

lug 2

of

battery

holder

BG

(S-l).

White·green

wire

to

lug 1

of

battery

holder

BH

(S-l).

White-gray

wire

to

lug 2

of

battery

holder

BH

(S-l).

This

completes

the

wiring

of

your

Transistor

Tester.

Check

to

see

that

all

connections

are soldered.

Switches C and L should

not

have

any

wires connected

to

the switch lugs.

Refer

to

Pictorial 13

for

the

following

steps.

Prepare

the

red test lead

from

red stranded

wire

as

shown

in Part A

of

Pictorial 13. Then install a banana

Page

17

IAI

REMO

VE

THE

I NSULA

TIO

I\ I

RO

M TACH END OF T

HE

lES

T

LE

AD

A

II.

D

TW

I SI T

OGUHER

T

HE

FI

NE WI

RES

.

r-

3/

4~

0 r 1/4'4

c~

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;:)

sst

a e

~

0

-

'I

I B I I

II:

S E R T

TH

E

3/

4" BAR 1 0

IV

I

RE

I I" T

OT

H E

BA

NANA P

LUG

. 8 [ I\D BOl H

WI

RE [ N

OS

I",

fl

AT

AG

AI

N

ST

TH

E P

LU

G

BO

DY.

I

r

~

:~~l

:

AT

~:

U

G

_ '

''"

''lEO

. ,"

~

~

I / PHI LL I

PS

~O]

-

-=

- -

I SC

RE

W

DR

I

VE

R -

t

~/

, P

LA

CE T

HE

BANANA PLUG ON A

sr

.1

ALL

l

/

PHI LL

IP

S

SC

REW

DR

I VER ,

OR

SIM IL

AR

'1/8"

TOOl !. PUSH THE

I

~SU

IAT

OR

OV

ER

I HI E B AN A

1\

A P

LU

G A

ND

\'

11 R E

UN

T IL T

HE

-rr

11\5 UL

AT

OR SNAPS I N

PL

ACE.

(C

I

IN

S

ERT

THE

O

THER

E

ND

OF

TH

E

TE

ST LEAD

INTO

THE

ALLIG

AT

OR

CLI P.

SO

LD

ER

THE

LEA

D.

T

HEN

IN

STALL THE CLI P

IN

SU

LAT

OR

ON

THE

C

LI

P.

G

/.-d~

~

-

~

CRI MP A

ND

~

~

"

t

~/

~

TESTCLIP

__

INSULATOR

PICTORIAL

13

plug

with

a red

insulator

on one end and an

alligator

clip

and

rubber

insulator

on

the

other

end

of

the

test

lead

as

shown

in

Parts

Band

C

of

the Pictorial.

In a similar manner,

use

stranded

wire

and prepare the

black,

white,

and green test leads.

34

Y2

X 0

I

1"

2"

3"

4"

5"

6"

I , I , I ,

1

1

I

J

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Heathkit IT -3120 Specifications

General

Brand	Heathkit
Model	IT -3120
Category	Test Equipment
Language	English

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