Goldstar OS-9020P Service Manual

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OSCILLOSCOPE

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os-g020P

MANUAL

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#20,

Yoido-dong,

19th

Fl., Yoido Tel:(02) Fax:

East

P O.

787-6862

(02)

7 84- 1 646,1

Gold5tctr

13013

East 166th Street

Tel:(213)404-0101

(213)921-6221

Fax: Tlx;B'l

Q-563-57 1 I

Yongdungpo-gu.

Tower,

Box 4Q4

Lucky-Goldstar

6828

-681

87

frreclslon

LGILA

Seoul

Twin

Ttx:GSFADAR

8 Cable

Cerriors,

:

GOLDRADAR

Ca,90i01-2226,

Go-,Ltcl.

'l

80-121,

Towers

K22938

Korea

U S A

Servicing

Precautions

Please read alI instructions before Disconnect

enclosure.

Instructions

1. To naintain the

2. After turning on

3.

4. For

Warranty

servicing.

power

before use. Triple-Iine

are using the doubleline of

product

the

quality

can be changed without

cord fron

precj"sion

power,

power

inprovenent

cord

to the

earth at the

in the

power

and reliabili.ty

please

is to

cord, make sure to

the exterior

service rnanual throughly

source before

allow a

be used for the

power

design and

prior

notice.

opening the

of the

1S-ninute

product.

connect

source

product

per-heating

for safety.

specifications

use

But when

the earth

it.

period

you

terninal

of

the

Warranty purchase.

In case of provided

We charge when the accident, we

Notice

This

there

If

servi.cing

service covers

technical failure

by our service

for

failure is a result

Serivce Manual

are

unit,

period

a

center.

repairs after

charge for

any specific differences

please

repairs

describes

contact

(iol-dStar

of

within

the

one

of user's

regardless

the

most typical

GoIdStar Precisj.on

Preci-siorr

year

one

year,

one

year

neglect,

between

fron the

repair

warranty

natural

of

the warranty

product

this

date of original

service

period

Manua] and

Co.. Ltd.

expires.

disaster

of this

Co-,

wiII

period.

model.

the

I-td.

be

or

-2-

CONTENTS

]-. SPECIFI

ACCESSORIES

2.

PREVENTI\/E MAINTENA\ICE

3.

4.

CIRCIJIT

5. CAI-IBRATI Calibration

5-1.

Test Equipment

5-2,

Prelininary

5-3.

Prelininary

5-4.

Initial Starting

5-5.

CATI

DESCRIPTION.

Interval ..

Procedure .. Control Settings

ON

.

ONI

Required

Procedure

....

.......

7A

13 13 13 13 14 14

SEMI COI\IDtTCTOR

6. CONFI GTIRATI

7- EI-ECTRI

(WITFI

EI-ECTRI

A-

BI-OCI{ DIAGRAM.

9.

Lg.

1- 1-. WIRTNG DIAGRAM .

L2.

A3.

SCI{EMATIC

MECFIANI vI EW

EX:TERNAI-

CAI-

ADJTISTMENT I-OCATIONS)

CAI-

()1\I

PARTS ARRAAIGEMEIVT

PARTS

DIAGI?AMS

PARTS I-I

VIEWS

I-EAD

I-I

ST

ST &

.......

EXPI.-ODED

24

25

27

43

44

58

59

62

-4-

1.

SPECIFICATIONS

PART SPECIFICATIONS

'

CRT

1) Configration useful

screen

and

6-inch rectangular screen with internal

(

1 div = 1

Znm

subdivisions

Cn

) ,

along

marking

for

the centraL axis.

neasurenent of

graticule

rise

8x10

;

tine.

Div

Accelerating

2)

Phosphor

3)

Focussing

4)

Trace

5)

Intensity control

6)

r

Z-Axis input

(Intensi

Input signal

1)

Band-width

2) Coupling

3) Input inpedance

4) Maxinun

5) r

Vertical

Band-width

1)

rotatj.on

Modulation)

ty

i"nput voltage

Deflection

DC coupled

potential.

(-3dB)

+1.9KV

approx.

(ref.

cathode)

P43

possible

provided

Posi.tive

going

signal decreases

intensity

+svp-p

or nore

cases noticeable nodulation at nornal intensity setti.ngs.

DC - ZMHz

(-3dB)

DC

-

DC to DC to

ZAMHz IAMHZ

ZAK

30V

nornal magnified

30Kohns

pQ+pgak

(

(CH1

AC

only)

)

signal

coupled

Modes

Deflection Factor

4) Accuracy Input

5) Maxinun input voltage

6)

7) Input

inpedance

coupling

to

LbHz lAHz

ZLllHz nornal

to

MlllHZ nagnifj.ed

(CH1

only)

CHl, CHZ,ADD. DUAL ( CH0P ; Tine,/div switch

SnV./div

to

Continuously

x5 MAG

;

approx.

DirectiZSAV

ALT ; Tine,/div

SV,/div

in

variable

10 calibrated

between steps

lnV,/div to 1V,/div

nornal

(Dc+peak

x3% magnified

lM-ohn

in

AC), with

in 10 calibrated

paralIeI

probe;refer

switch

steps of

at

least I:2.5

t 5%

with

to

DC-GND-AC

-5-

-

A.Zs to

ZnS to 0.ZuS a l-2-5 sequence.

steps.

(CH1

(CHl

only)

30pF

probe

specification

5nS

)

only)

,

Rise tine

8)

PART

17.5nS

or

less(35nS

SPECIFICATIONS

or less; xb MAG)

;

1)

9) CHl

10) Polarity

r

1) Display nodes

2)

3) Sweep

4) Accuracy r

1)

2) Source

3) Coupling

4)

5) Sensitivity

out

invertion

Horizontal Deflection

Tine base

nagnification

Trigger

Modes

Slope

Frequency

Systen

AUTO, NORM

TV-H

TV-V,

and

Z5nV/divXZA%

A X-Y

b.2us/div b uncalibrated continuous

10 tines

Note

;

t3%,

f.5%

xlt

,

A.ZS/div

(naxinun

50nS,/div.ZLnS/div of

QC

INT

(VERT)

INT

EXT

into 50 ohns

VARIABLE

to 40C), additional error for nagni.fier

auto,

(

CH1, CHz, VERT

4.5 div

0.2

at Least 1 di"v

ZAHz

only

CH2

in 19 calibrated

control between steps sweep

norn,

20Hz-ZMHz ZAHz-ZAMHz

rate ; ZLnS/div)

TIME BASE

TV-V, TV-H

)

AC

for-

A)

Q.

llp-p

LINE

or 1.

t0llHz(

to

steps,

are uncalibrated.

EXT

,

1.5 div

0.8 Vp-p

0Vp-p

-3dB

)

L-2-5 sequence.

at least

(3.0)

1:2.5

t2%

2)

3)

tC

t,

1)

2)

3)

I

1)

2) rE

t

1)

External trigger

6) Input

Max. input

inpedance

voltage

approx. 1 M-ohn

250V ( DC

+

paek

AC

2)

)

3)

4)

5)

PART

*

X-Y 0peration

1) X-axis

(same

Deflection Accuracy Frequency

as

SPECIFICATIONS

except

CHl

factor

;

response;

;

X5%

the following)

for

as that

sane DC to SAAKHz

of

(

CH1

-3dB

J

Y-axis

2) phase

X-Y

3)

*

Calibrator

*

Power

l) Voltage

2) Frequency

3)

t

1)

supply

range

Power

Physical Charac. Weight

consunption

difference

(probe

adj.) \KHz(+ZAD frequency,

duty

3'

ratio : 40

-

6A%

voltage

lAA(90-rlgv)/AC

-

(108

r20 229 244

(r98 Qrc

r32V) /

-

242V) / AC A25AV

-

Z50V) /

sane

as cHz

or less ( at DC to

0.5V( XLT%)

range fuse

square wave

50KHz

2A25AU

AC

zA25AV

Az5AV

5A / 6AHz

approx.

35W

7.SKe

)

t\

Dimension

r

Environnental teri

1) Temperature range for rated operation

2) llax. ambient operating tenperature

3) Max. tenerature

4)

Humidity range rated operation

Max.

5) operating

c

sti

storage

anbient

Charac-

for

humidity

nn

320

+10'

0'C to

-2A"Cb

(W)

to

C

-7-

l4A

x

+35' C (

+40" C ( +32

+7A"C (

45% to

to

35%

(H)

nn

+50'F

-+"Fto+158'F)

85%

85% RH

x 43A

'F

RH

to

+104'F

to

(L)

mn

+95'F

)

ACCESSORIES

2.

(1)

Operation

(2)

Probe

(3)

Spare

(4)

Power

nanual

(option)

Fuse

cord

-8-

PREVENTT

3-

VE

MAT

NTENAAICE

Preventive maintenance,

instrunent breakdown and The severity of deternj.ne the preventi.ve

Disassenbly

Renove the parts

Cleaning

The require. Accumulation of dirt breakdown. The

instrunent. Loose a soft Dirt that renains detergent Cleaning way velocity strean applicator delicate

maintenance

the screws in the top

top cover

of the instrunent are

instrument should

covers

cloth or

the interior should

to clean the

conponents.

environnent

frequency of

fron

provide

snall brush.

water

and

of air. A soft-bristle

is useful

when

is

the instrunent and

be cleaned

protection

dust accunulated on

be

can

solution.

interior

for

perforned

may

improve the

to

which this

naintenance.

preceding

cover of the

now accessible.

in the instrument can against dust in the interior of

removed with

Abrasive

only

is

to

cleaning

on

a regular

reliability of the oscilloscope.

instrument is

A

convenient tine to

recalibration

instrument.

Iay

aside.

as often

be occasionally

blow off the

in

as operating conditions

these covers

a soft cloth

cleaners should

brush or a cottontipped

narrow spaces

of

dust

basis, can

subjected

the instrunent.

Gently

Most

of

cause component

can be renoved with danpened in a nild

not necessary. with

a dry, low-

or for cleaning

prevent

perform

seperate

the

internal

be used.

The

will

the

best

nore

Visua1

The brocken boards, visible if other the

Inspection

instrunent

heat-damaged

overheating

should be inpected connections, and heat-danaged

defects

trouble

is apparent conponents

in the

is inportant

improperly

parts.

;

are

instrument

to

occasionally seated the corrective

however,

found.

;

prevent

transistors, particular

Overheating

therefore,

-9-

for

procedure

correcting

recurrence

such defects

danaged circuit

for nost

care

nust

usually indicates

the

of the

damage.

as

be

taken

cause

of

4. CIRCT]IT

The block diagran

the

of section schnatics diagrans Refer electrical

circuits.

to these

values

DESCF?IP:trION

(

page

Conplete

diagrams throughout

and relationship.

43

shows the overall

)

schematics

(

page

44 to

the

relationship

of

each circuit are also 57

).

following circuit description

between given

all

in

for

ATTENUATOR

Signals

applied

to the input

or they can be disconnected

position.

GND Attenuation The attenuator

+lA, +2,

are

+tAA circuit.

+4,

between

CH1 ( CHz

Signal

(

0105 follower, the Q101 ( 0105

is feed

by 5 tines.

Q104

the signal of

And

paraphase

to a

is deternined

by the setting

that is controlled

=10 circuits are in RA101

S101-AZ ( StgZ-AZ ) and

IT.TPUT A}IPLIFIER

)

fron the input attenuator is connected to

When

).

back to

excessively high-anplitude signals are applied

signals wiII be

When

).

5801

AMP through

0P

QZAG ( 0306

signal by differential

is open

(1)

connector

+he

to

can be either

internal circuit

the

of

by the

VlLT

/

(

RAIAZ ) and =10, +LAA

5101-82 ( SLg2-82

(2,3)

Q103 ( 4106

(

x

SMAG

R109 anplfies the output

base is converted

)

anplifier.

and

)

the signal that

),

coupled

AC

when 5901

(

V1LT / DIV switch.

DIV

switch has

;2,

circuits

).

source follower

to

gate-source

the

signal of

fron a single-ended

or DC coupled, 5902 ) is

+4,

Q101

the

source

junction

of

simal

CH1 ( CHz ) PREAilP &

Vertical

They also contain a stage to trigger only. And the trigger

horizontal The trigger

level necessary to drive

preanp

VERTICAL

The vetical switching

input signals to be Input signal that is controlled the TIME / DIV In shared

ALT

the

tine basi.s.

circuits

circuit for

anplifier

preanp

CON'IBOL

combinations

switch.

and

CHOP modes, both channels

TRIGGER

provide

preamp

in the X-Y

circuit

the

circuit

connected

that

by the vert.ical

PICK

OFF

control

provide

internal triggering fron

of

anplifies the

trigger

determines the

to

can

a sample of the

provides

CH1 position

generator

vertical

the

be displayed node switches

_IA_

vertical

of

the

CH1

the

of

internal trigger signal

are alternately

TIIIE

circuit.

input signal or

nain

are selected

and the

position.

input signal

the

CH1 or

input

/

anp.

simal to the

DIV switch.

X-Y

displayed

to the

signal

CH2

to the

conbination by

D

FLIP-FLOP

position

on

of a

of

VERTICAL MAIN AMPLIFIER

(7

)

The vertical nain amplifier the vertical deflection deflection

TRIGGER

The Trigger Anplifier circuit generator

The Trigger node switch, TV synchronization

The Trigger

etc. vertical trigger

external trigger input BNC connector The Trigger Generator Circuit has the circuit to and slope.

The signal type is AC. The Trigger mode ci rcui t. In the N0RM node, the sweep

generated,

is as N0RM mode, except that a pulse

The Base Signal of

is amplfied

etc

The anplfied signal, the collector

U109,

The N0.8

outputs in

plates

AMPLIFIER

circuit.

is

not

of the

Generator

Source Switch preanps, power

Switch

0peration in

present

Q130

by

Q345, Q346.

N0.8

signal

of

circuit consists

or the

U109

circuit

signal before

CRT.

produces

determines the operating

signal

the

free running trace is displayed when aplitude of

which

enters through three switches,

of

U109.

is called

provides

it is

trigger

of the trigger

circuit, trigger

selects one

line source

connected to front

generated

is

AUTO, TV-V mode is the

signal of

trigger signal

the applied

signal of

applied

the trigger

Q346,

final

naplification for

the vertical

to

(8)

pulses

amplifier, U109

control the trigger

mode for the trigger

only

enters the N0.2

start

to source, trigger

the signals fron the

to

this instrument,

panel.

the trigger signal

sane

signal

trigger

or

the sweep

operation is not adequate.

Q34?

and

level

a trigger

and

pulse.

generator

of

SWEEP GENERATOR

Sweep The sweep the The signal in the amplified sj.gnal appear enters the Base of

This sweep signal is generator

The sweep

sweep

generator

gate

of

time.

gate

Q129,

circuit. gate

circuit consists of

on, a very

is

input gate

Q327

generated

circuit

-

gate

Q342,

(

11

sweep

little

Miller Integrator, by

of

Q129

in

the Enitter of

through R551.

produces

negative

is anplified

on comnend

an unblanking

(9)

circuit

going

R-C network.

by Miller

is ca]Ied

trigger

gate

-

and niller

signal

pulse

to unblank

is

Integrator,

sweep signal

)

integrator.

generated

the

fron

the

CRT during

in

and

trigger

HORIZOT.ITAL

The

Horizontal drive the The

Horizontal The

first stage

require output The

ouput signal horizontal The output horizontal The Horizontal horizontal

In

all of the generator.

signal preamp

CRT horizontal

very little

change.

deflection signal deflection

position

position horizontal

In the of the circuit

OUIPIJT AilPLIFIER (12)

main

change

DIV

/

of deflection

provides

plates. consists anplifier

at the

arnplifier

anplifier

has

the

select

is the

the

TIME

Anplfier

the

final

of

five

has a low

input to

}IZS,

e126,

horizontal

switch

sawtooth

DIV

/

is

the signal

systen.

except

Output Anplifier

deflection

0utput Anplifier

horizontal

voltage

fron

cornplenentary plate.

from

Output Anplifier

of the

output

X-Y

Horizontal

of

the vertical

conplenentary

p1ate.

functions.

TIIIE

anplifier

position

Output

signal

cascade

produce

Q127

stage

input

drives

Q128

magnification

X-Y the

signal

select

switch

fron

anplification

anplifiers.

inpedance

the

desired

the

drives

from

the

and

input signa]

the

sweep

the

input

channel

to

and

right

left

the

I

POWER

The Volts, source systen,

STIPPLY (14)

Iow voltage

*5 ( +195

horizontal

CRT CIRCUIT

The

CRT

Circuit

The

circuitry high voltage The

calibrator amplitude This

output

(

II{Ilz

and

connector.

)

Power

Volts,

volts

provides

consists

regulator,

circuit

frequency.

signal

Supply

+12 Volts,

used to

)

deflection

the voltage

of

the z-axis

high

produces

available

Circuit

*56 operate systen

woltage

square

a

as

a square

provides

Volts,

the

and

levels

amplifier,

rectifier

five

+I4A

vertical

driving

cRT

and control

and the

wave

output

wave

Voltage

regulated

Volts

deflection

(13)

high

sources

and

)

three

circuit.

circuits

voltage

CRT controls.

signal

at

with

the

oscillator,

PROBE

-tz

(

unregulated

to

operate

accurate

ADJUST

0.bVp-p

CRT.

-t2-

5. CAI-IBRATI

ON

GoldStar Precision Contact

5-1. Calibration

To at least

if

5-2.

The

equivalent,

The

for Therefore, exceed All operating within

test equipnent nanual

the

GoldStar Precsion

naintain used frequently.

Test

following

given accurate

the list

the test equipment

instrunent

every

equipment required

test

are requl.red

specifications

calibration.

the

for the

Ltd.

Co.,

interval

accuracy,

TAAA hours

equipment(Table

for

specifications

specifications.

ia assuned

the

Iisted are not test

given

equipnent

provides

Co.,

of

the

specification.

Ltd.

perforn

operations

5-1

complete

the test

of any

to

in this

if nore

conplete

office.

the calibration

or every

see

;

calibration

equipnent

test

equipment

be

comectly

Operating

procedure.

information

instrunent

six nonth

page

23) and

are

the ninimun

used

calibrated

Refer

is needed.

repair

of

the

accessories.

of the

instructions

to

0S-9020P.

nust

neet and

the

inst,ruction

and calibration.

OS-}AZ4P

or

necessary

or

for

the

Prelininary

5-3.

This

instrunent

(

t 5C

1.

Connect the

2.

Set the instrument Setting.

3.

See the

)

procedure

should

for

best overall instrunent

Allow at

Adjustment

be calibrated

accuracy.

to

AC

controls

least

Locations

fifteen

at an anbient

Iine voltage,

given

as

minutes

in the

pulrout

tenperature

Sa/6aHz

preliminary

of warnup

pages(see

of

line source.

Control

before

proceeding.

page

2E).

+ZAC

-13-

5-4.

Preliminary

control settings

Preset the the calibration

instrument controls

procedures.

the settings

to

Controls Settings Controls

Focus Midrange

@

TRACE ROTATIONAs

O

INTENSITY

O

-

VERTICAL

desi.red

Midrange

_

o

(E

O

@

V-POSITION

@

V_VARIABLE CAL(fully

@

Mi drange

clockwise)

@

INPUT

COUPLING

(AC-GND-DC)

GND

@

given

below,

when

starting

Settings

-

HORIZOI'ITAL

-

H-PosrTrON Midrange

x1OMAG Normal TIME/DIV VARIABLE CAL

-

LEVEL Midrange, nonal SLOPE

1nS

TRIG

+

-

(putt)

VOLTS,/DIV 5

@

V_MODE

O

INVERT Nornal

CHz

C

Initial

5-5.

1.

Push the POWER switch.

2.

Wait a few seconds for the cathode ray tube A trace should appear on the display of the

If setting

4.

Adjust F0CUS

the

trace

Readjust POSITI0N controls if necessary, to

starting

disappears, increase ( clockwise ) the

until

the trace is

control for the best focused display.

mV,zDIV

procedure

easily

MODE Auto

@

TRIG

@

observed

SOI'RCE

(

CRT

CRT.

center

(CH1)

INT

to warm up.

)

INTENSITY

the trace.

control

POWER

STIPPLY

SYSTEM

NOTE

: Before

(see

Control

Preset the

Check

t1l

a. b.

c.

d. e.

f.

Check

lU

a. b.

you

page

settings

controls as

Low-voltage Connect Connect Connect

Connect Connect

Connect

High-voltage

Connnect

High-voltage

by

Check

begin,

see ADJUSTMENT

25)

given

Supply, if necessary.

the digital voltneter

:

*11.75V

the DVM fron

in

to

the - 12 volt line.

: - 11.75V to

the DVM fron

1.4.

?5V

:

the DVM from

:

*54V to +58V

the

DVM fron the

:

*137V to *I42Y

the

DVM fron the

+185V

:

the DVM

DVM

for

reading

Probe.

the * 5 volt ]ine.

to

+5.25V

the *56 volt I ine.

+2lAY (JlA)

to

Supply.

the

to

as

the

Prelininary

+I2.25V

-I2.25U

+ t4g

+195

volt

H. V test

-1705

LOCATI0NS in

Control

(

DVM ) from the

volt

line.

(unregulated)

(

H. V and

point

-

line.

-1895V

pullout

the

Settings.

* 12 volt line.

(

PB101-9

(

P8101-6

(

PBL0I_T2

(

R183-down

(

R183-up

DRV

CRT

(P106-6)

pages.

) )

)

BD)

Control Setting

Preset

Check,zAdjust

t3l

the

controls

MODE switch to a. Rotate the b.

Observe

c.

Adjust the an appear.

DI

given

as

Bias.

CRT

the

AUTO

INTENSITY to the

the trace

CRT

of

Bias

Adjustment

SPI-AY

the

in

position,

direction of

CRT.

INTEN

Prelininary

and TIME,/DIV

VR119 so that

Control

switch to

I o'clock.

the trace

Setting.

the lnS.

makes

-15-

Check,zAdjust

t4l

a.

check

b.

Adjust horizontal

Check,zAdjust

tsl

a.

TIME,/DIV

b.

Set the figure,

Trace

that the

the TRACE

trace

graticule

ASTIGnatisn

switch

to IIITENSITY using

position

Rotation.

ia

R0TATION

lines.

and

the

X-Y

control

controls.

parallel

for

FOCUS

position,

for

a

to

the

a

trace that

and

snall

spot,

horizontal

parallel

is

AC-GND-DC

as the

to following

center

with

DC.

line.

the

The

c.

Check that

d.

Adjust a round

spot

the

FOcus

spot.

spot

is round.

adjustnent

and

ASTrG

center

adjustnent

of

vRll?

scneel

for

-16-

I{ORI

ZONTAI-

SYSTEM

Control

Preset

t6l

l7l

t8l

settings

controls

the

Check,/Adjust a. Set

b. c. Check

d.

the input AC-GND-DC

TIME,/DIV

that center Adjust

eight DlVisions,

the H GAIN

with the center

Check,zAdj

a. Set b. Set

c. Check

ust

the TIME,/DIV

x

10 MAG

that

graticule

Adjust

d.

time

Check,zAdj

Set

a.

Being the

b.

the MAG GAIN

marks align

ust

the TIME,/DIV switch

the Ieft

the x1OMAG

then Observe Adjust

d.

end

the

the MAG CENT

of the

as

given

the Prelininary

in

Horizontal Gain.

to DC.

switch

to the Lms.

the time narks align

within

adjustnent VR114

eight

Horizontal

one-cycle tine narks

the

lines,

graticule

x

10 MAG

switch

to the 1mS.

within 5%.

adjustnent VR115

with the

MAG

CENT.

to the

x1OMAG

end of

novenent of

switch

the trace is brought

switch

to the

the left end

adjustment VR116

trace within t

with the

3%

so that

lines.

Gain.

align with

ten division

1 nS.

0. x1OMAG,

position.

xl

A.ZDIV.

Control

graticule

the

Settings.

line over the

tine narks align

the ten

so that

graticule

to the center

the one-cycle

Iines.

point

of the trace.

for the movenent

division

and

of the

Check,/Adj

t9l

a. b. Set

c. Check that d.

Check,zAdjust

i10l

a. Set b. c. Set d. Check that

e. Adjust

ust low

the tine mark

Set

spaced sweep accuracy.

generator

the TIME,/DIV swi.tch

tine narks

the niddle eigth Adjust the with the middle

divisions,

SmS,zDIV

adjustnent VR106

eight

High speed

graticule

sweep accuracy.

the input coupling switch to

Set

the

time

nark

generator

the TIME,/DIV switch to

the tine marks align with the

the middle eight

VC113

graticule

Iines.

division.

that the time narks coincide whth niddle eight

for

to

5mS.

align

within

for 10

the

-77-

tine narks.

5mS with the

3%

so

lines.

DC

p

S tine narks.

10 r S.

graticule

line

over

the

that the time narks coincide

graticule

lines over

\/ERTTCAI-

SYSTEM

Control

Preset

tlll

ll2l

settings

the controls as Check,zAdjust a. Set

b. c. Change d.

e. Adjust f.

Check,zAdjust a. b.

c. d.

e.

f.

the

VoLTS,/DIV

Position the

the VOLTS,/DIV switch to the Check center line.

(

Repeat is

Set the MODE Set Set Next, Adjust the vertical identical Set Check graticule

Adjust difference

that the trace is within

the

CHZ

noted

for a trace

),

part

when changj.ng

TIME,/DIV switch to the lnS

the

switch

the

CH1

the V-MODE

the V-M0DE

that the trace is identical

the ADD

given

Balance

DC

trace

CH1 ( CHz

(a)

through

ADD BALANCE.

to

and

CHz AC-GND-DC switches

switch

with the horizontal center

switch within

Iine

BALANCE adjustnent VR118 for

with the

in the

(

switch to the

to the

) at the horizontal

AUTO

to

t 0.5 division.

horizontal

Prelininary

attenuator

Step

horizontal

DC BAL

(e)

the

position.

adjustnent, VR101

until less

VOLTS,/DIV

tDUALl.

Position control that the trace is

tADDl.

Control

balance

position.

bnV

center line.

position.

10mV

division of the horizontal

1

0.

center than

setting.

position,

to

GND.

graticule

with the

center

horizontal

graticule

Settings.

).

(

CH1

line.

A.A5

two tines of the

division shift

Iine.

line.

or

)

center

VR109

Check,/Adjust

t13l

a. b.

c. Adjust

Confirn Check

(

CHz

Vertical

vertical

the

that

the

the Position

for a trace at the horizontal

)

Position Center.

P0SITION control

trace

within

is

Center

adjustnent VR103 ( CHI

at the nidrange.

1 division.

center line.

),

VR112

-18-

Check,/Adjust

t14l

x1

AC

GAIN.

a. Set

b. Set

c. Set d. Connect e.

f. Check

g.

Check,/Adjust

t15l

the

TIME,/DIV switch to the

the

V0LTS,/DIV

the

AC-GND-DC switch to DC.

square-wave

the Adjust the deflection of screen.

that the high-voltage level of

Adjust

for a flat

output anplitude

To

be

the x 1 AC

level.

Vertical

switch to the 10mV

flat

GAIN

Gain.

1nS

generator(

of that

J II

adjustnent VRIA2

position.

using lKHz

generator

pulse

is

LJ-

(

CH1

output for 5 division

fIat.

)

range

VR110 ( CHZ

).

)

a. b. Connect

c. d. Check e. Adjust the GAIN

f. Check Check,zAdjust

i16l

a.

b.

c. Connect d. Check

Check,zAdjust Vertical Step

ll7l

a. b. Set c. Connect the fast-rise,

d. e.

the

Set

switch Set

display

Set Set

Set

square-wave and cable. Set

generator CH1 : Set

CH2

VOLTS,/DIV

to DC.

the standard

the

standard

for a di.splay of five divisions.

of 5

aII the

Input

the

VOLTS,/DIV

the AC-GND-DC switch to DC.

the L-C meter to the input terninals.

the input capacity

the

VOLTS/DIV

the

TIME,/DIV switch to

generator

the square-wave

output for a the

Then, adjust

: Adjust

switch to

amplitude

amplitude calibrator for a

adjustnent

divisions wiLhin 2%.

VOLTS,/DIV

Capacity

switch to 10mV

switch to the 10mV

to

generator

YCLLZ

the

for

VC1ll

VCILA for

the 10nV

calibrator to

VR104 ( CHl

switch

(

for approxinately 30pF.

Response.

positive

the input.

divisions

5

a square wave

for over-shoot

settings.

ATT : =1

position.

the

over-shoot

pS

20

output

to lMHz. Adjust

position

),

).

position. position.

(

a

Use

display.

that

and AC-GND-DC

the input.

50nVp-p

VR11l ( CHZ

50mV, lMHz ) of the

5AQ

the square-wave

is flat.

is +A.?,DIV.

is

+A.ZDIV.

signal.

)

ternaination

for a

-19-

Check/Adjust

t18l

Attenuation

Conpensation

(

ATT

+10,

+LgA

).

a.

Set

b.

Connect terminals, under the following settings.

ATT

+10 9.1 v 4.5

+ IAA 1V 5V

c. Adjust

(

ATT VOLTS,/DIV

+la 0.r v

+

Check,zAdjust

t19l

AC-GND-DC switch

the

the square-Hrave

check for a square-wave

VOLTS,/DIV

the

trimmer

top

flat

Lgg 1V

under

)

Input

to

generator

The square-wave

condenser for

following

the

The generator

Capacity.

DC

the

to

that is fLat ( tlat top

CH1 ( CHz

generator

v

a

square-wave

settings.

square-wave

output

a.25 U ucra0

2.5

V vcr02

)

output

Adj ust

cHl

input

rcHz)

(

vc108

(

vc106

)

a,

Connect

b.

Check

c,

Adjust

the following settings.

ATT

the

L-C meter to the

the input capacity

the triruner

VOLTS,/DIV

+1 lA

+L0

0.t

+ lDb 1V

condensers

mV

v

for a

CH1

( ( (

terninal.

pF

30

(

CHZ

vc109 vcr07

vc105

) ) )

input capacity

)

input

for a approxinately

Adjust

vc103 vc101

-24-

30pF.

under

TRIGGERING

SYSTEM

Check,zAdj

tZgJ

a. Set

ust TRIG CENT.

TRIG

the

pull position,

switch to the

b.

Connect a

0.3DIV ( SAKHz c. Set the d. Adjust

the sine-wave

TRIG LEVEL knob to the nidposition.

the

waveforn,

e. Next,

set the TRIG that synchronization is effected. Aft,er confirnation, Ieave the TRIG-SLOPE

out.

Check,zAdjust

tzt)

a. Set the VOLTS,/DIV

switch switch to knob to

b. Connect

CHz) for

Adjust CH2

c.

Next, adjust

d.

to

the the sine wave

SOURCE switch to the

the

V0LTS,/DIV switch to 10mV and

pS.

20

generator

).

VR105

0.3DIV

so that synchronizaLton is on

the

screen.

SLOPE

in the depressed

Trigger Balance

switch to

10uS,

VERT,

a five division

the the

nid-position.

position

VR113

so

TRIGGER V-M0DE swj.tch

generator

cntrol so

that

-

to

50mV SOURCE

$1KHz)

both

the TRIG SLOPE

CH1,

to

the input connector for

effected on

(

push state.

to the input

that

waveforns(CH1 and

: inner

state ) and insure

Readjust when

(CH1

and

CHD,

switch to INT, the INT

to

DUAL, and CH1

connectors

waveforn comes to

CH2

the

TIME,zDIV

the

TIME,zDIV

position

CH2)

knob

the

stepped

TRIG

(CH1

CH1.

coincides.

and

X-Y

l22l

122-l

122-21

Operati.on

Check,zAdjust

a. Set the V-MODE

[X-Y],

of

CHZ b. Set the VOLTS,/DIV switch to c. Connect the standard anplitude calibrator

connector. d. Set the standard amplitude e.

Check

f. Adjust the

within

Check,/Adjust X Position

a. Set the TIME,/DIV

the the

b.

Check

i.s within

c. Adjust the

graticule

for a

horizontal POSITI0N

AC-GND-DC switch

to see

X Gain.

switch to the AC-GND-DC switch to

GND.

display

X

3%.

0.2 X

center.

adjustnent

GAIN

switch to the

that round spot

division

adjustnent

CENT

CH1, the TIME,TDIV

divisions.

of 5

Center.

control to

to GND.

against the

of CH1 the

calibrator for

to DC,

10nV. with X

VR108

is near

VR10? to

for a displ.ay

[X-Y],

the nidposition

the center

horizontal line.

switch

the

1 GAIN.

to the a

50mV.

the

V-MODE switch

position

to

the

AC-GM-DC

CH1 input

of

graticule

spot

divisions

5

and

at

switch

to

the

CHl.

and

-2r-