OS-9020P.pdf

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ASK & CO. ELEKTITONIKK

LYNGBOVEII:N 52

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TLF. 5534 4893 FAx 5534 I i l0

OSCILLOSCOPE os-g020P

SERVICE MANUAL

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GoklStor Jrrecision Go.,LtGl.

GoldSt<tr

OSCILLOSCOPE

os-g020P

SERVICE MANUAL

ASK & CO.I'I,I.]KT'RONIKK

LYNGB['VEIEN52

Elti t.nxsr.vAc

TLF. ss 34 4tt 93 FAX s-534 1l 10

troRwA y

OoklStcrr lrneclslon Go-,Ltcl.

#20, Yoido-dong,Yongdungpo-gu.

Twin Towers

Yoido P O. Box4Q4

Tel:(02)787-6862 6828Ttx:GSFADAR

: GOLDRADAR

Gold5tctr frreclslon

13013East166thStreetCerriors, Ca,90i01-2226,

K22938

Tel:(213)404-0101

Fax:

U S A

(213)921-6221

Tlx;B'lQ-563-57

1I LGILA

Seoul 'l 80-121,Korea

19thFl.,EastTower, Lucky-Goldstar

(02) 784-1646,187 -681 8 Cable

Fax:

Servicing Precautions

Please read alI instructions in the service rnanual throughly

before servicing.

Disconnect power cord fron power source before opening the

enclosure.

Instructions

1. To naintain the precj"sion and reliabili.ty of the product use it.

2. After turning on power, please allow a 1S-ninute per-heating period

before use.

3. Triple-Iine power cord is to be used for the product. But when you

are using the doubleline cord, make sure to connect the earth terninal

of the product to the earth at the power source for safety.

4. For quality inprovenent the exterior design and specifications of the

product can be changed without prior notice.

Warranty

Warranty service covers a period of one year fron the date of original

purchase.

In case of technical failure within one year, repair service wiII be

provided by our service center.

We charge for repairs after the one year warranty period expires.

whenthe failure is a result of user's neglect, natural disaster or

accident, we charge for repairs regardless of the warranty period.

Notice

This Serivce Manual describes the most typical product of this model.

If there are any specific differences between this Manua] and the

servi.cing unit, please contact GoIdStar Precisj.on Co.. Ltd.

(iol-dStar

Preci-siorr

Co-,

I-td.

-2-

CONTENTS

]-. SPECIFI

CATI ON

2. ACCESSORIES

3. PREVENTI\/E

MAINTENA\ICE

4. CIRCIJIT

DESCRIPTION.

5. CAI-IBRATI

ONI .

5-1. Calibration Interval ..

5-2, Test Equipment Required

5-3. Prelininary Procedure..

5-4. Prelininary Control Settings ....

....... 14

5-5. Initial Starting Procedure

6. SEMI COI\IDtTCTOR

CONFI GTIRATI

()1\I

I-EAD

7- EI-ECTRI

CAI-

PARTS

ARRAAIGEMEIVT

(WITFI

ADJTISTMENT

I-OCATIONS)

A- EI-ECTRI

CAI- PARTS

I-I ST

9. BI-OCI{

DIAGRAM.

Lg. SCI{EMATIC

DIAGI?AMS

....... 44

1-1-. WIRTNG

DIAGRAM

L2.

MECFIANI

CAI- PARTS

I-I ST & EXPI.-ODED

vI EW

A3. EX:TERNAI-

VIEWS

-4-

1. SPECIFICATIONS

PART

SPECIFICATIONS

' CRT

1) Configration and

useful screen

6-inch rectangular screen with internal graticule ; 8x10 Div

( 1 div = 1 Cn ) , marking for neasurenent of rise tine.

Znmsubdivisions along the centraL axis.

2) Accelerating potential.

+1.9KV approx. (ref. cathode)

3) Phosphor

P43

4) Focussing

possible

5) Trace rotatj.on

provided

6) Intensity control

provided

r Z-Axis input

(Intensi ty Modulation)

1) Input signal

Posi.tive going signal decreases intensity +svp-p or nore signal

cases noticeable nodulation at nornal intensity setti.ngs.

2) Band-width

DC -

ZMHz (-3dB)

3) Coupling

4) Input inpedance

ZAK -

30Kohns

5) Maxinun i"nput voltage

30V ( pQ+pgak AC )

r Vertical Deflection

1) Band-width (-3dB)

DCcoupled

DC to

ZAMHz nornal

IAMHZ magnified (CH1 only)

coupled

LbHz

lAHz

ZLllHz nornal

MlllHZ nagnifj.ed (CH1 only)

Modes

CHl, CHZ, ADD. DUAL ( CH0P ; Tine,/div switch - A.Zs to 5nS ,

ALT ; Tine,/div switch ZnS to 0.ZuS )

Deflection Factor

SnV./div to SV,/div in 10 calibrated steps of a l-2-5 sequence.

Continuously variable betweensteps at least I:2.5

x5 MAG ; lnV,/div to 1V,/div in 10 calibrated steps. (CHl only)

4) Accuracy

nornal

x3% magnified

t 5% (CH1 only)

5) Input inpedance

approx. lM-ohn in paralIeI with 30pF

6) Maxinun input voltage

DirectiZSAV (Dc+peak AC),with probe;refer to probe specification

7) Input coupling

DC-GND-AC

-5-

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