EZ Digital OS-3020D, OS-3040D, OS-3060D User Manual

Oscilloscope

Digital Storage Oscilloscope Operation Manual

05-

30200/400/600

Digital Operation

Storage

Manual

0· , · ' • . • ' " , . . , ' • • " .,

11" ' . ., .' • • • • ", . ' . ' • • ,.'•••• , . , .'."

Oscilloscope

•

fi\

V

~

()

!Q)l

----

;::..

:;:;;;.

......

:;::::.~

:;:;:.

......

=.J

@

ez

Digital Co.,Ltd.

ac

cording

DE

CLARATIO

to ISO

N OF CONFORMITY

/lE

e

Guid

e 22

and

EN

45014

Manufacturer's

Manufacturer's Addres

Declares that the product :

Product Name :

Model Number

Date:

Conforms to the following product specifications :

Safety:

Name:

s:

EZ Digital Co..

222-28. Nae

Bu

che

on-s i, Gy

R.O.K, 421 -160

OSC

ILLOSCO

05

-30200,

Aug.

18. 1995.

Certified by

EN 61010-1: 1993 (l EC 1010-1: 1990+

-dong,

05

TUV

Ltd.

Ojeong-gu.

ecnggi-do

PE

-30400,05-306

Rhein lan d

A1:1

992, modified )

00 ,

EMC :

Supplementary Information :

The

productherewith

Directive 73

Bucheo n, Gyeonggi

/23

Location

/EEC

complies with t he requ

and

the

EN 50081- 1: 1992 EN 50082- 1: 1992

ireme

EMC Direct ive 89

nts of the Low Volta ge

/336/EEC

Quality As

.

C.

)'

.

Chea l Young Kim

suranceManager

/LU'J?

.

Safety Summary

Safety Precautions

Please take a moment to review these safety precautions. They are

provided for your protection and to prevent damage to the osc

illoscope

This safety information applies to all operator and service personnel.

Cauti on and warning statements .

CAUTION Is used to indicate correct operating or maintenance

in order to prevent damage to or destruction

pme

nt or other prop

in order to prevent personal injury.

ert

y.

WA

RNING

procedures

of the equi

Ca

lls

attention to a potential danger that reqwres correct

procedures or practices

.

Symbols

Cautionjrefer to accompanying documents) and Warning,

Protective ground(earth) symbol.

Introduction

Thank you for by EZ Digital

We guarantee their exceptional precision and

the product please read thi s user

Note

pur

chasi ng a EZ product. Ele

ar

e high technology products

manual

carefully.

ctr

onic measurin g instrume

mad

e und erstrict qu

utmo

st reliability. For proper use of

~

EZ

Digital

alit

nts

produ ced

y control.

CO.

.Lt

d,

I. To fully maintain the precision and reliability of the product use it within the range

of

sta

nda rd

2. After turning on-power. please allow a pre-heating period of as long as some 15 minutes before use.

:J

.

Thi

s equip

4. For quality imp rovem ent the exterior

changed without prior notice.

5.Ifyou have further questions concerning usc. please co

center or sales outlet.

set

ting

(tempe

ment

should be used with a triple line power cord for safety.

rat

ure W'C - 35·C. hu

design and specifications of the product can be

midit

y 45%

nta

-8

5%) .

ct the EZ Digital service

Warranty

Warranty service covers a period of one year from the

dat

e of original

purchase.

In case of technical failure within a year, r

epair

service will be

provided by our service center or sales outlet freeofcharge. We charge customers for repairs after the one-year warranty period has

been expired. Provided that against any failure resulted from the user's negligence, na tural disaster or accident, we cha rge you for repai rs

arr

regardless of the w

For more professio nal repair service, be sure to contact our service

center or sales outlet.

anty period.

- CO

NTENTS

-

l.

Descriptio ns

of

the

prod

uct

\-1. Introduction 1-2. Specifications 1-3. P

oint

s to bc chec ked prior to usc

1-4. Accessories

2.

Op

eratin

g in

stru

ctions

Fun

2-1.

2-1-1. 2-1-2.

2-1-3. 2-1-4. R 2-1-5.

2-1-6.

ction of eac h block

Display and power blocks Vertical amplifier block Sweep and

ead

trigger blocks

out

Storage block

Miscellaneous

feature

2-2. Basic func tions and measurement

·

·····

II

I I

13

17

18

14

21

21 21

23

26

27 28

29

2-2-1.

Con

nectionofmeasuring signals 2-2-2. Adj ustment during initial operation 2-2-3. Data display

( I)

Real time m

(2)

Storage mode display

ode

display

2-2-4. Real time mode measurem ent

(()

Single-trace measurement

(2)

Dua

l-trace measurement

(3)

Trigger selection

24

30

33

35

38

.~<)

-I

I

(4) Addition

and

difference measurement

44

(5) X-Y measurement ··

(6) Delayed-time axis operation

2-2-5. Digital storage mode function

(

I)

Normal

(2) Equivalent sampling mode

(3) Roll

(4) Single mode

(5)

Hold mode

(6) Save mode (7) Save memory display (RECALL)

(8)

X-Y plot output

(9) Hori

( 10) Interpolation

( I I ) ALT

( 12) GO

(13) Menu mode

(14) X - Y measurement

storage mode ( MO

mod

e

zont

al magnification display

MA

G .

-NOGO

·

DE)

45 46 49

·

49 49

51

52 53

53 53

54 54

57

58 59

59

65

2-3. Measurement applications .

2-3-1. Ampl itude mea 2-3-2. Ti me interval mea 2-3-3. Frequency measurements . 2-3-4. Phase difference mea

2-3-5. Rise time measuremen t

sur

ements

sur

emen

sur

ts

ements

66

70

72 73

77

3.

X-Y

digital

output

RO

Application X-Y

3-1.

Plotter specification

3-2.

Connection

3·3.

Setting

3-4. 3-5.

Operation

3-6.

RS-232C interface

3-7. Major troub le,

4.

Serial

com m u

4-1. Introduction 4-2. Specification

Connector

4-3. 4-4. C 4-5. 4-6.

onne

ction

Operation

Transmission

plott

er

nication

using RS-232C

arrangement

andcommand

/reception

dat

a format

and

signal descripti

on

.··· · 90

..···· 9\

.......

80

R5

85

90

91

. 91

93

94 96

chara

4-7. Separating

Abn

4-8.

ormal operation

cter

handling

4-9. RS-232C interface cable connection 4-10.

Generation

4-11. Key cause

Program

4-12.

of d

ata

of

abn

examples

tran

smission/reception program

ormal

data tr

ansmission

and

instrument operation .... 102

/reception

....

···1

102 102

\0 2

0:1

\0:1

5.

Use

r maintenance

5-1.

Cle

anin

g

5-2.

Calibr

ati

OS-

3IXX)

6.

DSRS diugrum

6-1. External views

on

guide

-,

J J I

J

II

J I I J 12 J 12

6-2. Block diagram

II

.'

1.

Description

J. Introduction

1-

This

product OS-3000DSRS is the 2 c

of

produc

which is equipped with

It

combines

commu

the wide

the benefitsofdigital scope to measu re, store, interpret and

nicate the rapid trace, with the benefits of analog scope to meas ure

band

width, 2 time axis generator, delay sweep and separated TV

trigger signal.

It

reduces the mea

rna

l fl

our

esc

inte

ent

observed waveform.

(l)

High speed optical frequency band width

ND

converter installed on each c

the max. rate of 20MHz samples/sec. Any signal with perfect

edn

rcpcat Thi

ess can be stored. (Max. 20-60 MHz)

s product can be used as

frequen cy range between 20

(2) Large storage capacity

channel

Each composed of trace with high accuracy.

t

han

nel digital storage oscillosco pe

ND

converter.

sur

ement error,

and'

uses 6% squared type CRT with

scale which enables to take the

hannel

an

ordinary real time oscilloscope with

and

60MHz.

samples the

has 2kW memory. Sinceitcan

IkW

data

, it measures any rapidly

phot

ograph of

input

signal at

indicate the waveform

cha

nging transition

(3)

Wav

eform save

It

has 1kW memory to save two waveforms stored in each cha nne l.

(4) Multi-Function

It

has a variety

of

following functions to interp ret a wide range

signa ls :

- Roll

mode

function to mea

sur

e low signal.

- Average functio n to elimina te noise from the signal and to mea the pure signal.

II

of

sur

e

(5)

Output

It

uses bot h RS-232C interface function to input/

data

to th e personal com puter,

thro ugh digital plotter.

data

.

CRT

(6)

an d cursor readout

It can pro mptly perform the

CRT r cur

difference

cursors.

ead

sorread

out function to display the set information of

out f

unction

(8 T) and frequency difference(l/8T)between two

output

and

RS-232C to

It also interprets and reco rds the stored

operation

and

meas

cond

ure

the digital

uct screen h

ment

using

pan

el andthe

bot

to display the voltage difference (8 V). time

ard

h the

copy

12

1-2.

Spec

ificatio

Spec.

-CRT

1. Con

figuration and

screen

useful

2. Accel

eratin

g

potential

J. Phosphor

4. Focussing

5.

Tracerotati

6.

Scaleillumin

7. Intensity

-

Z-Axis

on

control

input

(Intensity Modulation)

I. Input signal

2. Band

-wi

dth DC-2MHz(-3dB)

3. Coupling

4. Input

5. M

*

I.

impedance

aximuminput

Vertical

Band-width

DC

coupled

Deflection

(-3dB)

AC coupled

2. Modes

3. Deflection Factor

4. A

ccura

cy

5. Input i

6.

7.

mpe

Maximum Input

couplin

dance

input

8. Rise time

9. CHI out

10.

11.

Polarity

Signal

inversion

delay

ation

g

ns

Model

voltage

OS-J0

201l

6-inch

rec

(1div= [

2mmsubdivisions along the cent

tangular

em

+1.9kV approx.

(ref. cathode)

screen

), marking for mea

po

ssible

twith

OS-J04

00

with internal graticulc ; Sx 10 DiV

surem

ent ofrise time.

ral

axis.

+11.5kV

PJI

autofocus

approx

(ref. cathode)

(standard)

correc

.

tion

circuit)

OS-

provided

variabl

e

provided

Positive

going

signal

casesnoticea

decreases

inte

ble modulation at

nsity.( +

normal

5Vp-p

intensity

DC-3

or m

ore

senings.)

.5MHz(-3dB)

DC

2a-3Ok-o

30Y

(DC+

DCto20MHz DCto 7MHz

10H

zto

20MHz

10Hz107MHz

normal magnified

DCto

40MH

DCto 7MHzmagn

10Hzto40 10Hzto7MHz

CHI. CH2.ADD. DUAL

(CHOP;TImeJdivswitch -0.25to 5m

ALT

;Tim

cJdi

v switch2ms10 O.21

SmY/div to SV/div in 10

Continuously xS MAG;

variablebetween

ImVldivtoIVidivinIOcalibrated

approx.

Direct;3OOV

(DC+peak AC), (with probe;

calibrated

steps at least I : 2.5

normal

; + 3%. magnified; + 5%

IM-<>hminparallel

AC

17.5n

sorle

ss

hms

peak

AC)

zno

rmal

MHznormal

magnified

<,

1s

steps of a

DCto60MHz

ifi

ed DCtoIOMHz

10Hz

1060MHz

10Hz10IO

H2,ADD.DUAL

CHI.C (CHOP:

0.25to 5ms

ALT:Tim

2mstoO.I

1-2-5

sequence.

MHz

Tune/div

cJdiv

I'S

steps.

with

2SpF+ 3pF

refe

r to

probespeci

-DC.GND

8.8nsor less 5.8nsor less

(sOnsor less;x5) (sOnsor less;,5 ) (35nsorless;x5)

approx.

20mY

/div

into

50 ohms ; DC to

CH2

only

none delay cable supplied

IOM

Hz (-3dB)

JOWO

signal

normal magnifie

normal magnified

switch

fication)

d

switch

13

.-

Spec.

--------

______

Model

OS-.'020D

OS-.'O·jOD

*Horizontal Deflection

I.

Display modes

2.

Time

base

A

Hold-off time va

3. Time base B

Delayed s Delay

4. Sweep magnif

5. Accuracy

*

Trigge

I. Modes AlITO. NORM. lV-V.

2. So

3. Coupling AC

4. Slope

5.

Sensitivity

F

AlITO. NORM lV

6. External triag"

Input Impe ance

wee

p I div or less to 10 div or more

tim

e ji

tte

r

ication

r System

urce

and

requ

ency !NT

-V. lV-H

Jiv

O.2i

qucncc. uncalibrutcd continuous control

s

teps

Ool/

qucnec. calib

EXT

10

O.2sid

'sh

at least 1 : 2.5

Js/

div to O.2/ls.div in 7 ca

IOtimes (maximum sweep

NOle;50ns/div, lOns/divof A

areuncalibrutcd.

+ 3%.

2OHz·1MHzlMHz

U.S

div l.Sdiv INT

O.2Vo-o

Max. input voltage 250V(LlC+p

*X

·y

l.

X·'

3Xi

~

.

Y axis

.~.

X·Y phu-,e

Operation

s

dittcrcuc...

·

(same as CHI

Defl

ecti

Accuracy; ±5%

Freq

uency response ;

*Readout Function

I. Cursor r

2.

3.

4. Resolution

eadou

f

unction

Panel

splay

di

Effec

tivecursor

range

graticule

t Voltage

sett

ing

s Horizontal axis : SfDlV. UNCAL. MAG (convened value)

fromcenter

Vertical axis (CHI. CH2)VfDlV. UNCAL. MAG (convened value)

refere

Timerefere

Freque

ncy

V

ert

ical : withinf 3 div

Horizontal

A, A

int, B. B TRIGD. X-V

iv in 19 calibrated steps, 1

ria

ble

with

the

holdolT

(ot

be

r..Ll

10 50t ).

CHI, CHl,

libratedste

tte

c;20n\-idiv)

TI~

ps.1-2-5 se-

r than I : 2

lE

BASE

additi

onal e

LINE.

+ or

·1O

MHz

O.8Vo-o

at least I div or

fMo hm in pararall with approx. 30pF

on factor: same as that of CHI

3" or less (at DC to 50kHz)

nce

refe

ren

:

with

2OHz·1MHz2MHz-40MHz

O.5div

O.2

EXT

except for the following)

ce

inf 4 div

Vo-o O.8Vo-o

l.O

Vp-p

cak

DC to 500kllZ(-3dlll

same as CH2

~V;

~-REF

~T;

~V;

~·R

~

-REF

1(25div

II

0.1

-2-5

sc-

bcrwcc

cal

n

quence uncalibrated con-

tinuous con

steps at least 1:

control

0.1}Js.'di

quence

(xx}()

l

Otirncstr

rate; I

rro

r for

magn

lV

-H

EXT

1.5div

INT

EXT

Composite Sync.

AC)

E F

OS-

P~/

di

v 10

ibra

ted

v toIOIJs

rated

nacimurn sweepI

On

s/div

ifier

2O

Hz·1MHz

Il.Sd

O.2Vo-o

.'060D

O.2s-'

uiv in 20

steps

1-2-5

trolbetween

2.5

h.l

s

tcps

t-z

+ 2%

lMll

iv

l.Sdiv

O.8

sc-

iv in 7

-S

sc-

z.ffi

Mliz

Vo-o

1

-1

Spec.

Model

• Digital storage function I. Display memory

2. Sav'c memory

3. Acquisition memory

4. Vertical resolut ion

5. Horizontal resol ution

6. Maximum sapmling rate

7. Digital Band Width SM

single shot event

"':

I'll..'II\ v

\,.'\

cru 7M Hz at Y axi s

Sus/div

0.2u

sld

()S-

Jll~O()

- 2

0sl

div : 2000word,ICIi !Susl div

iv- 2sl div :

IOOOw

ords/

20M II,

7MJlz

xS

OS ·.'O·I

O»

1()l)l)Wtlnh/CH

I00:IWortJ

...

elf

»:

2

-20

CIio.lu

-

2

~ poi

lOOPoint

nL

t1

i\

/div

,l div-2usl div :

20 Msl s

lIl

(4 samplesl Cycle)

4OMI17

31 Y axis x5 7MHz at Y axis

MAG MAG MAG

8. Data acqu isition · NORM mode : storage the da ta each time trigge r

mode

method

9. Display Function

· A VG

· ROL L 0LD

· 1I

NGLEmode:waveform is held after stored

· S I

·

SM

OOTI

I

l'oTERPO LAn ON : the sto rage wa

·

: averaging from 4 to 256 times

mode

: da ta is

mode

: data is he ld for'he NORM. AVG. ROLL

continuo

usly stored o n the CRT

i : the storage waveform is displayed by dots or s

vef

orm is displayed by dot.

linear of sine interpolation

MAG : Si multa neo usly dis playing the original

· ALI magnified wavefo rm

10. Data save

I I. Pre-trigger

12. Plotter

1

,'\

"Il.

L1

.1

outp

ut

14. Magnified display

15. X-Y operation

GO·NOGO

·

Up

to IwO

Saved data can recalled

plotter output of the CRT plotter via the RS· 232C inte ace.

Sigle trace X-Y X Dual trace X-Y Sensitivity

: judgement and co mparing of acqui sition signal

sto

ra~

data can be saved.

to tnc display wheneve r reauired .

Variable (0.04 div step)

d~

layed

information to an IJP

RS·232C

x \0 by Tirne/ div switch or

axis - CH 1 axis - CH 2 Y axis -

Y X

axis - CH I axis - CH 2

Y

axis

: C II I

X

·X

ImV-SV/div ± S%

MAG

axis - SA

S8

Y ax is : CH 2 ImV-S V/ div ± S%

16. Swee p time

Phase error 3" or less from DC

Js.

O.2I

'div- 20s div repetitive roll mode:O.5j

ALT:

signaLO.2Ils/di",'-2/Js/div

'S,

O.51

,'di\"-20s.'di\ roll mooe:O.5j

1~d

i

v- 20s div AI.T O.I

-SO

Kllz

0_11'- dl\-20" di_ repetitive signal:O.1jJs Ji \ - 2ps div,

,><;Idiv"().5

CIIOP:Imsldi_- 20, 'div CHOP:O.Ims'd

17. Readout function

(Panel seuing

disp

ld:

) V/ div. uncal. MA . Sidiv, uncal. MAG _

X-Y.

Tri~g

er

point, no. of averaging .

roll mode.

interpolation method.

mem

save

trobe

( ursor reado ut)

Voltage difference

Time

ory information .

sening

diff

erence ,0, T : t::.-Ref

6 V : o -Ref

Frequency II t::.I : 6 -Ref Pretn gger

'm.G : 6

sldi v :

switch

'S.'di\"

iv-2

smoolhing.

(lS

-'ON) )

2000word

IOOOw

II,

6OM

wavef

orm

·GL

- 20s.'div

msldiv

0s!div

ord

.

moo

siCH

siC

xS

th

and its

H

I:;

S

f'L"

.

*

Calibrator'(

*Power Supply

I. Voltage range

probe

OS

-.10.1

(.t]%

(1)

' q U.I H.' \ \

)

2A

IA

..

;j\

F ,

()S

-

\l

uJd

~IJ

j )

approx.

Juty ral l\l

· .lO~()1>

lU I,

fn.."Ju

50%

clli.) ',

05\

'

voltage range

I()()

( 40-IIOV)

'AC"

120( IOK- I32V)/AC

220( 198

2.1(~207

. 242V)/AC

·

250V)iAC

OS·.1( 01)1)

I..'

,

'1

F2A

FIA

2. Frequency

3. Power consumption

appro, . 70 W.

50 I 1'011,

upprov . 7

11

\\ ..ppm\ . 70W .

*Physical

Characteristics

I. Weight

2. Dimension 320 m

approx. 8k

Je

W) X

approx

140 m

.8kJ;::

(10X 430 m (LJ

"Pp'O\

. Ski:

*Environm ental

Characteristics

+

45"

3st:(+5O

4Ot:(+

t:

70

+

to

3tF

(-

4'F to +ISS'F)

85"

I. Temperarure range

for rated

2.

~ta:<

.

ambient

opera

tion

operating temperature M

a:<.

3.

4. Humidity mnge for

storage

tcmerurure

rated

operation

+ 1Ot: to +

at:to

-2Ot to +

5. Max. ambient

operating humidity

• Safety

, B tC

35"

Er\61010-1 overvoltage CAT

Approval:TOV

lnt

erf

erdnce :EN50081-1

Susceptab,hty: EN50082- 1. IEC80 1-2, 3. 4

to +

85%

IT.

cCautiono .Sourccs like small hand -held radio transceivers, fixed station radio and television

tran

smitters. vehicle radio

that may induce

voltages

tran

smitters anJ cellular phones generate electromagnetic radiation

in the leadsofa lest probe In such ca ses the accu racyofthe

oscilloscope canno t be guaranteed due to physical reasons.

+9S'F)

'F to

to + 104'F)

R11

RH

degree of poilulion 2.

I

16

1-3. Points to be checked prior to use

Comply with the following procedures for safety and to prevent damage to

the product prior to operating this product. 1-3-1. Line voltage selection

Before use, check the voltage.

This instrument must be operated with the correct line voltage selector

switch setting to prevent damage in reference to table I-I.

To change the line voltage select

ion

:

1. Decide the voltage range and fuse in reference to table I-I.

2. Make sure the instrument is disc

3. Pull

out

the Line Voltage Selector switch on the rear

onnect

ed from the power source.

pan

el. Select the arrow mark position of the switch from Table I-I. Slide the arrow

<Caution> : Th is product

mark

to the desired positi on

has

the ground chassis (3 wire power cord is

used). Check whether any

and

other

this product requires the transformer bef

plug it in.

equipment connecti ng with

or

e use. If so, do not connect the DC/AC or the hot chassis equipment if no transformer is available. Do not directly connect it to the AC power

con

circuit directly Otherwise serious personal injury or

nected to the AC power.

damag

nor

to the

e to this product

for a long time without trouble.

Table 1-1. Line voltage selection and fuse ratings

Line voltage Arrow mark position

90 - IIOVAC

108 - 132VAC

198 - 242 VAC

100

120

220

207 - 250 VAC 230

17

FuseRatings(250V)

ULl98G

2A F2A

IA FIA

IECI27

1-3-2. Installation and handling precautions

OS-

When placin g the

3()()()DSR

following precautions for best instrument perf

S in service at your workplace, obs erve the

orm

ance and longest

service life.

hot

or c

1. Avoid placi ng this instrument in an extremely Specifica lly, don 't leave this instrument in a close

sunlight in midsummer, or next to a space heater.

2, Do not use this instrument immediately after

cold. Allow time for it to warm to room t

emperatur

brin

old

car

, exposed to

ging it in from the

e, Similarly,

don't move it from a warm place to a very cold place, as

air

condensation might imp

its operation,

3. Do not expose the instrument to wet or dusty environments. on

top

of

4. Do not place liquid-filled containers

this instrument.

A spill could seriously damage the instrument.

5. Do not use this instrument where it is subject to severe vibration,

or strong wind.

on

6. Do not place heavy objects

the case, nor block the ventilation

holes.

7. Do not use this oscilloscope in strong magnetic fields, such as

motors.

8. Do not insert wires, tools, etc. through the ventilation holes. ar

9. Do not leave a hot soldering iron ne

the instrument.

10. Do not place this oscilloscope upside dow down on the ground, otherwise damage to the knobs may result.

11. Do not use this in

strument

the rear-panel connectors,

12. Do not apply voltages in excess of the m

onn

ectors or probes. (Refer to 1-2 specification)

c

upright while BNC cables are attached to

This

will damage the cable.

aximum

ratings to the input

place.

near

13. This oscilloscope is

10 use UL listed double insulated probes only,

-4. Accessories The below listed accessories are

instrument.

( I) Operating m

anual (2) AC power code (3) Probc

(OPTION

)

(4) Fuse

con

I copy

l EA

2 EA

I EA

tained in the

18

pac

kage

of

this

2. O

pe

rat

ing

Instructions

(A)

FR

ONT PANEL ITEMS

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05·30400

05

·30600

05-300005R5

Front Views

20

This section describes the measurement procedures and methods utilizing a varietyofbasic

instrument.

2-1.

Fun

ctionofeach block

The

numb

indicated on Fig. 2-1. 2-1-1. Display

[ I ]

POWER SWITC

[

3]

INTEN

[

4]

FOCUS

[

5]

TRACEROTATI

[ 6 ]SCALE IL

[ 7 ]

VOLTAGESELECT

[ 8 ]

POWER

inf

ormations and functions needed for operating this

ers shown in the following descriptions represent each t

and

power blocks

tum

H

SITY

ON

LUM

CONNECTOR

OR

Push in to

Adjust the bri

rotation increases brightness.

Adjust sweep lines for obtaining the highest

definition.

Adjust sweep line s for obtaining the highest

definiti

It

when observation is when taking the ph otogr Selecti

suitable for operating power. Connection and removal of the AC power cord is

on

.

adju sts the bri

on

is permissible to make the voltage

instrument power on and off.

ghtn

ess of CRT. Clockwise

ghtn

essofscale. and useful

mad

e in a

aphofscreen.

dar

ermina

k place or

l

easy when using.

2-1-2. Vertical amplifier block

9]

CHI. X INCONNECTOR:

[

<CAUTION> To avoid damage to the oscilloscope. do not apply more than 250VrDC+Peak

AC) between "CHI" terminal and ground.

[10]

CH2

. Y IN

<CAUTION> To avoid damage to the oscilloscope. do not apply more than 250V(DC+Peak

[

1l][12]AC-DC

CONNECTOR

AC) between

.GND

Connects input signal to amplifier or becomes a X-axis sig

X-Y operation.

:

Con

nects input signal to CH2 vertical

amp

lifier or becomes a Y-axis signal during

X-Y opera tion .

CH

1 vertical

"cnz" terminal and ground.

To be used when selecting the meth od of coupling input signal to vertical

21

nal

amp

during

lifier.

AC

GND

DC

[ 13][14J V

[ 15J[ 16J

[ 17J[ 18J POSIT

PULLCH2.

[19J V

OLTS

VARIABLE

lNV

MODE

CHi

C

H2

/DIY

ION

[18J

SWITC

Ca pacitor between inp ut connector

amplifier interrup ts an y DC componen t of the signal. Connec ts input connector

to the ground, thu s establishing

reference point. By makin g connector and vertical amplifier, is directly connected to vertical amplifier.

As being the attenuator by each step selecting

vertical deflection sensitivity, measurement

of waveform is practicable regardless of

signal magnitude and those shall be used by

having t so as to make waveform mea surement easy .

As being the minute ad

having vertical deflection sensitivity continuously varied, if they

counterclockwise the attenuation ratio becom es

less

than pull out the knob, vertical axis sensitivity becomes x5 times.

At time time. the maximum sensitivity becomes

ImV

.

Being used for

Clockwise rotation moves waveform up counterclockwise rotation movesitdown. When pulled' appea rs inverted.

H

Being used for selec ting th e display m

vertical axis.

Disp

laysonly the signal input to

dir

ect

con

hem

placed at the appropriate positi

1/2.5 of

ind

mov

ing vertical axis waveform .

out, the signal applied to

of

vertical

nection between in put

justor

ar

icated value.

and

vertica l

amp

lifier

G

ND

as a

input

signal

being used when

e fully rotated

When

CHIon

od

you

and

CH2

e of

the

on

CRT.

Displays only the signal input to CH2

on

the

CRT.

[20J

CHI

DU

AL

AD

D Displays the algebraic sum of CH I and

Two signals th ai arc input to CH I and CH2 ap

pear

on the CRT simulta neously. CHOP : ALT :

TIM

E/DIY 0.

TIME/DIY 2ms

-0.

2s-S

21'i

ms

(.

signals.

OlIT

CONNECTOR

Provides frequency counterorother devices with a part of signal s that arc by having

them

amplified.

OS-3060lJ : 0

input

10 CH I

CH

.1

us )

2

2-1-3. Sweeps

[2

lJ H

ORIZONTALDIS

and

trigger blocks

PlAY

A

To select the sweep mode. A

pushbutton sweeps the CRT at the

tirnebase rate when pressed.

AlNT

pushbu

tton sweeps the CRT at the main

A

!NT

(A) tirncbase rate when pressed, and the B

tirnebase

trac

simuhanously),

B

The sector whose bri

inten

sifies a section of the

ets

). (In case of OS-3

disp layed on the scr BT

RIG

'D the delay sweep is triggered by the

first trigger pulse.

x-

y

pu

shbuttonprovides X-V operation. (only

OS-3

06(

0 ).

( • A sweep appears in STORAGE mode.)

• In

OS-3000DSRS. the horizontaldisplay is as follows

(Fig. 2-2

and

2-3).

0600.

pres>A and B

ghtne

ss is modulated is

een

in a magnified form.

main

(

A)

Fig. 2-2.

HORIZ OISP

• B

CJ

A INT B '

c:J

1'R

CJ

05-3020

IC"o

0, 3040D

HORIZ OI<P

fA

CJ

x-Y B 'PtIG'D

CJ

Fig. 2-3.

"

05

'1

0

CJ

-30

600

[22J A TIME/DlV To select eithe r the calib rated sweep rate

the m

ain

(A) timebase, and X-V operation

()S-

J()

~()J).

OS -30.fOD) for dcluycd-vwccp operation.

[23

J B TIMElDlV To select the calibrated sweep rate of the

calibrated (B) timebase.

[24J

DELA

Y TIME

POSmON

To determ ine the exact starting p

oint

within the A timebase delay range at which the B timebase will begin sweeping.

[25J A

VARIAB

PULL

LE

XIOMAG :

Being used for having A sweep time varied

ontinu

c

When with the central scale

ously from the calibrated position.

you make

the

part to be magnified align

of

the vertical axis by adjusting the position of the horizontal axis and

when

you pull the X10

MAG

switch,

waveform, the left and the right of which are

magnified centering

around

the middle,

appears. At this time, sweep time becomes

of

[26J

HO

RIZONTAL

POSm O

1/10

N:

Being used for adjusting

the indicated value of

and being used i measurement

of

Clockwise rotation

and

right

count

ndependentl

waveforms.

of

the knob moves it to the

erclockwise rotationmoves it

TIME/ON

horiz

ontal

y of the time

position

to the left.

of

the

.

[27J

[28J

TRIGGER

AurO

NORM

TV-V

TV-H

TRIGGER

CHI

CH2

LINE

EXT

MODE

SOURCE

Selects the sweep triggering mode .

The sweep

When triggered normally is obtained

wavef

Where there is no signal not

made, the sweep still occurs

automatically.

occur

s automatically.

there is a triggering signal, the sweep

and

the

orm

stops.

and

the trigger IS

This

position is convenient in

general use.

can

Triggered sweep

there is no triggering signal

is not made, then the sweep does not occur,

then the sweep does not occur.

hen

effective w desired to be

the effective triggering is

done

be obtained, but when

and

triggering

This

mode is

in a low frequency (approx. 25Hz or less) . Being used for meas uring a composite video

signal in a frame

This

one

is used for meas uring a composite vedeo signal in a This

can

select the convenient portionofthe

unit

scanning

line unit.

trigger source.

It

can

select the when there is a signal on CH This

can

select the when there is a signal Thisone

is used for observing a signal which

is triggered

can

also stable observe components derived

CH

I as the trigger source

l.

CH2

as the trigger source

on

CH2

.

on

the frequency of AC power.

from the power in which a measuring signal contained. External signal becomes the sourc e of

And

this

one

triggering signals.

is used when

making a triggering regardless of the size of

of

signals

vertical axis.

It

IS

25

[29J

[30J

[31J

HOLD

TRIG

LEVE

TRIGGER

EXTTRI

OFF

G IN

L

SLOPE

Thisone certa inly by

main sweep. It is also effective in triggering

such signal, irregula r signal

makes complicated signa l triggerred

cha

nging the H

com

plicated signals as high frequency

OLDOFF

or

digital signal,

timeofthe

etc. by extending sweeping time. Adjust it slowly for the stab ilized

triggering.

It

is n

orm

ally used after having

it fully rotated counterclockwise.

This one selects a starting p

oint

of

triggering signal.

When

trigger

maximum value and when rotating it

the knob is rotated clockwise, the

point

moves toward the +( positive)

counterclockwise, it moves toward - (negative)

maximum value.

Being used forselecting trigger slopeofthe

initial sweep.

this switch selects positive/ pulled. the switch indicates negativ e

When

the switch is pressed,

+)

slope and when

(-)

slope.

Being used for connecting external trigger

signals to trigger circuits.

<CAUTION> To avoid damage to the oscilloscope, do not apply more than 250V(DC+Peak

AC) between "EXT Trig In" terminal and ground.

2-1-4. [3 2J

Gi)

READOUT

SELECT

READOU

T/CURSOR

Fig. 2-4. Readou

:

Thi

s switch selects

t/

REF,TRACKING("',

Cursor

cursortochangeamong

REF

) cursors.

6,

The selected cursor is displayed on the top

left side). ( 6 ,

(or

\7)

26

® s

C9

»,

ON

toT, l/toT

/OFF

: This switch switches

among

'" Y,'"T, 1

/'"

T

modes.

{;:,

: Pressing

function

Y and SELECT toggles the readout

ON

or

OFF.

: Moves the selected cursor upward , downward,

right or left.

2-1-5. [ 34]STORA

is>

STORAGESWIT

CD

MEN

U S

GE

SlORAG£YEN

Cl

S1N

Ct£ SElECT PLOT RECAll

Cl

Fig. 2·5. Front panel

CH

When

:

realtime oscilloscope function. All the switches do not operate. Pressing this switch once lights up LED, en ters into storage mode, and all the switches operate. Pressing this

switch once more in storage mode enters into

REAL

hro

async

WIT

CH

: Press this switch to change average,

interpolation, probe state, roll ON/OFF.

ode

m mode is displayed on the top right of CRT. Each set mode is chan ged by pressing SELECT switch unde r MENU switch.

STORAGE

Cl Cl Cl

LED goes out, it perf

TIME

~

ODE

U HotD

SA't£

CJ

Cl Cl

storage

mode switch

orm

mode. In storage mode, LED blinks

nously along with sampling.

andsmoo

When

ever pressing this switch, the

is changed,

and

the currently selected

s the normal

thing

27

Gil

HOLDSW

®

SAVESWITC

CD

SINGLE

CD

SELECTSWITCH

®

PLOTSWITC

CD

RECALLSWITC

ITC

H

SWITC

H

: Pressing this switch stops sampling,

H

waveform displayed on the screen stops and lights

ON

. Pressing this switch again

releases

: This switch stores the display waveform in the

storage memory. The display waveform is stored by this switch in H OLD state.

In no ncha ntged.

H

: This switch meas ures the cha nge in the

instantaneo us (intermiuent) waveform. Thi

:

mode.

: Thi s switch outputs the display wavef

the X-Y plotter.Pressing switch tran smitts data only in the H

: Thi s switch is used to display the stored

waveform lights up the LED. Wh en LED goes pressing this switch continuo usly it relea ses.

HOLD

HO

s switch changes the M

and

lights up LED. This switch opera tes

state, and sampling begins.

LD mode, only the switch state is

ENU

OLD

state (HOLD LED lights up).

on

CRT again.Pressing this switch

and

the

switch setting

orm

on

out

after

LED

2-1-6. Miscellaneous

DIP

SWIT

[33]

DIP

RS

·131C

[35]

CH and

SWITCH

CONN

EXTBLANKI

RS-232C

ECT

OR Co

CONNE

Sets the time of plotter outp ut or at the co with

the time of plotter output or at the

communi

NG INPlIT CONNECTOR

modul ation of the CRT. Tra ce bri

reduced with a positive signal, and increased

with a negative signal,

CTOR

PLOTorcommunication

computer

nn

ects RS-232C cabl e (Fig. 3-2 and 4-2) at

,

cation with co mputer.

mode at the

mmunication

: For applying signal to intensity

ghtn

ess is

[ 36J CAL TERMINAL

[37] G

ROUND

CONN

ECTO

2-2. Basic measurements

2-2-1. Connectio n of mea

R

surin

Outp uts the squa re wave (O.5V, Ik calibrate the

Pro

vides an attachment p

probe

and

verticalamplifier.

ointfor

ground lead .

g signals

Hz)

to

a separate

There are th ree differ

ent

methods forobserving signals by

oscilloscope as follows :

I. Method using lead wire

2. Met

3. Method u

I.

Meth

Thi

that signal time, ground wires s of oscilloscope However, in case t wire is mea suring low level signals. As it is connected to for

2.

Meth

Thi

output c shie ld coating of coaxial cable prevents

hod

using coaxial

sing

probe

cable

for oscilloscope

od using lead wire

s method is the simple onebut it can only be used in the event

the signal level you i

or

a low impedance circuit (such as

and

hat

not

shielded,the

the

connector

BNC

is desirable.

od u

sing

coaxial cable

s method is the m

onnect

or is

ntendto measure is eit

ha

ll be

connec

ted betwee n the

TTL

herahigh

circ

uit).

ground

the gro unding surface of objects to be measured.

the wire picks up h um and noise

meas

ost

urement

of oscilloscope, using a b

ailingone

to the mea

may

often be difficult whe n

hard

to have the wire

which

sur

eing

hum

and

ind

is widely used

object

noise, accurate measureme nt can be performed. Since the coaxi each

end and there are

just would be advisable to usc a suitable

meas

uri

ng high freq

of

the sa me value as the impedance of mea be used, a terminator in terms shou

ld you use the subject method, an accurate measureme nt co uld be

perfo

rmed

al

cable are usually fitted with

man

y varieties

uen

cy signals, a

nd

the coaxial cables should also be

of

impedance. Even

with

out

affect

ing

mea

termin

surement

of

types by

one

when

signals.

BNC

connectors

their

as

needed.When

ator

having

surin

g signal sources shall

matched

using a long cable,

meansof

level

At this

ing terminal

beca

use the

ing

adapte

As

the

purposes

an

impedance

with the

when

on

, it

the

r

an

29

3. Method using prob e for oscilloscope

Using a probe is most preferable to any other alternatives when performing the measurement onto circuits.

with IX (direct c As thc i

osc

npu

illosco pe with probe increased at lOX position, measurement unit

onn

t signal att

ection) position

enuat

es by 1/10 with the input impedance of

The

probes arc available

and

lOX (attenuation) position.

(VOLT/ OIV) must be multiplied by ten ( 10). (e.g. it becomes 50mV X 10 = 0.05V in 50mV/OIV). As the probe shielded wires, it

prevent

hum

and noise.

can

perform the measurement by using the coaxia l cable, you s

of

oscilloscope also uses

When

you intend to

ho

exactly know the source impedance, the highest freque ncy involved,

capac

and the

itance

If any of these factors are

of

the cable, etc,

unkn

own, use a 10 X probe.

2-2-2. Adjustment during initial operation

uld

Comp ly with the following procedure before conducting the

I. Adjusting knob is as follows

OFF

OWER

P INTEN

SWITCH [ iJ

CONTROL

[3J

FOCUS CONTROL [4J

C-GNO-OC

A

/OIV

VOLT VERTI

CAL

SWITCH [ 11,12J

SWITCH [ 13,14J

POSITION CONTROL [ 17,18J VARIABLE

MOD

V.

/OIV

TIM E

CONTROL

E S

WIT

[22J

CH [ 19J

TIME VARIABLE (25)

HORIZONTAL

TRI

GGER

TRIGG

ER SOURCE [28J

TRIGGER

OLDOFF

H

POSITION [26J

MODE

[27J

LEVEL [30J

[29J

[ 15,16J

(released) Fully counterclockwise Mid

AC

20mV

In the middle

Fully clockwise

and

CH I

111

s

0.5

Fully clockwise

and

Mid AUTO CHI

Mid

NORM

(max. CCW)

to the power connector [8J.2. Co nnect the power cord

measurement

pushed in

30

EZ Digital OS-3020D, OS-3040D, OS-3060D User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual