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:

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

33

35

38

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

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

pin

using RS-232C

arrangement

andcommand

/reception

dat

a format

and

signal descripti

on

.··· · 90

..···· 9\

.......

80

80

R5

85

90

90

91

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

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

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

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)

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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

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

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

prev

attached

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

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

pushed in

pushed in

30

3. Press in the
INTEN
adjust brightn ess so as to
<Caution> A burn-resistant material is used in the

POWER

switch [1J. About 30 seconds later, rotate the

[3] control clockwise until tbe trac e

mak

e it suitable for observing.

app

ears.

CRT

And

then,

. However if
the CRT is left with an extremely bright dot or trace for
a very long time, the screen may be damaged. Th erefore,
if a measurement requires high brightness, be certain to
turn down the I
get in the
the scope is

4. Adj ust the

distinctest definition.

FOCUS

control [4] to make it produce the finest and

NT

EN control immediately afterward. Also,

hab

it of turning the brightness way down if

left unattended for any period of time.

5. Make sure tha t the traces align with horizonta l graticule lines by
turning the CH I vertical
not align with horiz
each other by adjusting the

6,

Turn

the

HORIZONTAL

POSITION

ont

al graticule lines, then make them align with

TRA

POSITION

control [ 17J. Where the traces do

CE ROTATION [SJ.

control

[26]

to make it align with the

left-most graticule line.

7. Connect the PROB E to the

CHI

, X IN connector [9] to make it align

with the left-most graticule line.

8. If the top and a certain porti
pointed, ad

ju

st the control terminal of the PROBE by means of a

small screwdriver as shown

on

of the square waves are tilted or

on

Fig. 2-b(b ).

31

HOO

K COVl R

R(

TRA(lABl (

HOO k TIP

CAPACITANCE

CORR

TR,MM(R

CQR;UC TlY
C()'jP( NSAH O

ill

ECT

ION

(tllH H CTS Of

I .. ) PROBl

UNDER

COMP £HSATl D

PROO£COM

~

PENSA

TION

GROUND CLIP

(jVl R
CQMP( NSATfO

Fig.

2-6

. Probe compensation

2-2-3. Data d isplay

(I)

Real time mode display

Cursor measurement value

Cursor

CD

I

-

[>-

/

-.

- - - - - - - - - - - - - - - - - - - - - -

I

CHI

CH I and

---

I I

Scale

factor

CH2

scale factor display

r

~1

- r

L

__

L

I

-

- - - -.-- - - - - - - - - -

I I

ADD

CH2 Scale

1

<--

OX

-r->- r

__

L

__

A sweep, B sweep

factor

V/DIV

~

-r0-r-m- r; -1

L

__

L _ _ L

X-V Scale factor

---->1

__

I

L

__

J

PROBE

PIOX lOX
PIX

In

ADD

CH2.

display

PROBE

IX PROBE

mode, •

+'

B

LANK

>

*

is displayed between scale factors of

33

CAL
UNCAL

X5MAG

CHI

and

.<t A sweep. B sweep factor display

and

X-V displa y

1< V

r- -r--r- -r--r-

I > I 0. 1 5 m s

l _ _ L

__

IDIV

l _ _ L

__

>1

-1

L _ --.J

[

B

LANK

® Cursor measu re

The meas ured value between cursors is displayed.

•

> :

Xl

CAL

XI0

MAG

UNCAL

ment

I

<:---

1

)ln

X-V ope ration mode, X-V mode is
displayed.
data

and

2)ln B sweep mode, B
displayed
disappear.

display

-

--

Mea

sur

and

B setting data disappear.

and

ed value

TIM

E/DIY

TIME

TIME/DIY

--->

-r

--r- -

I 0 V I

_ L

__

L_---1

setting

is

selling

I

1

data

I

t;.

V : CH I, CH2, AD D, DUAL

o:

T : Time differe nce

between two cursors

for A TI

1/

t;.

T : Reciprocal of

ME/DIY

t;.V : +. - , mv, V. div

6.

T:

+,

-.

ps, ms, s, div

1/

t;.

T :

MH

z, kHz, Hz, mHz, ?

•div" is displayed in the following

t;.

T

cases

-

The

- B sweep

-X

- A sweep (UN CAL mode )

-CHI
with each other when the VERTICAL

MOD

measurement value
channel
MOD E switch is not in CAL mode.

-Y m

selected by VERTICAL

ode

and

CH2

VOLTS/DIYare same

E is

ADD

.

of

the

(2) Storage mode displa y

dat

Location of

Pre-trigger and cursor measurement value

1>- - - - - - - - - - - - - - - - - - -

Cursor

::::

a display on CRT

'--------1

Average. smoothing.

interpolationand

~

met

hod

save switch,

I state

sampling

PRO

BE

Save A

scale factor

CH I scale factor CH2

-II------;:===

ADD

NOTE

Wavef
displayed
while input signal is stored in storage mod e. While.
wavef
condition associated with sweep factor
valves are always displayed when wavef

*

* Pre trigger and cursor measurement

+

scale factor

orm

or even previously stored wavef

orm

is stored, the instrument stores the setting

CHI,CH
When
factor corresponding to wavef

The

using cursor selector switch

displayed.

2 and A sweep factors

CH I

and

sweep waveform corresponding to the function selected

,-_~-

A scale and
X-Y scale factor

CH2 waveform s are displayed. the sweep

Save B scale factor

and

wavef

orm

is displayed.

orm

is displayed.

and

vertical mode switch is

orm

orm

may be

. These

* SAVE A and SAVE B sweep factor

When the waveform is stored in the memory. V

ME

/ON is displayed. When the stored wavef

TI

displayed on the CRT by pressing RECALL switch, this
sweep factor is displayed.

/ON

orm

and

is

(

1'

CII I and C H

::'

'''CCp

faC

lor display

BLANK

*

n

J

r--r-

I Pl , OX . > I 1 I 0 lD V ;

l

__l__

Probe
PIOX

PIX

@ A and B sweep sweep factor display

display

lOX

probe

IX probe

1

<-

- SIDIV ---->1

-

--

r- -r- -r--r- -1

> . 0

r

L _ _ l _ _ L

XI

CAL

No interpolation
Sine wave interpolation XIO MAG

Linear interpolation (Horizontal

.•

(No hori zontal magnification )

-r

- -r- -r- -r--r--1

l

5

__

__l__

ID

L _ _ L _

,S

L _ _ l

-J

:J

magnification)

__

L _ _ J

Blank

>

*

and

X-V display

C

AL

UNCAL

X5 MAG

In X·Y operation. A sweep sweep

factor dis
displayed.

@ Pre trigger selling display

Trigger point of display waveform agains t the trigger point
display waveform.

(Example

<D

Refer to 2-2-5 for the displayofaverage. smoothing,
interpolation, sampling met

hod

.

36

app

ears and x·yis

of

® Cursor measurement value display

Th

e measured value between cursors is displayed.

Measured value

- - - - - >1

lJ.VI : Voltdifference between lJ.V :

cursors for CHI and Dual a T : -l-, - , ns, !'S, rns, 5, div

two
sweep waveform.

lJ.V2 : Voltdifference between

cursors for CH2

two
sweep waveform,

lJ.V : Voltdifference between

cursors for ADD

two

sweep waveform,

lJ.T : Time difference

between two cursors
for A sweep waveform

1/

lJ.

T : Reciprocal

of

lJ.T

•div" is displayed in the following

case :

-The measurement value of the
c

-A sweep VAR mode is

-x-v

-In
exceeds the measurement

-The VOL

-t-

, - . mV,V, div

1/ lJ.T : MHz, kHz,?,

hann

el selected by VERTICAL

switch is not in

mode at the equivalent s
mode.

m

ode

HOLD

not same with each other when
vertical mode is

state,

TIM

TS/DIVofCHI

ADD

mHz,

CAL

state.

EIDIV switch

.

not

am

MAG

and

div

in CAL

pling

MOD

range.

em

E

are

37

2-2-4. Real time mode mesurement

(I)

Single-t race mea

Single-trace measurement is the most elementary function of this

measuring instrument.

Use this mode when you intend to measure one single signal. Since
this in
CH2. CH 1
to use it when you i

frequency counter.
CH2, as the INVERT switch [ 1
of

<D

strument

waveform inverted.

Set the switches as indicated below when you use the CH I.The

words in the

PO

WER[I]

AC-GND-DC [Il], [12] AC

VERTICALAXIS

VARIABLE [ IS], [ 16J Fully
V

MODE

HORlZ

AT

IME

TRI

GGER
TRlG
TRlG
HOLD

® Position the trace

Vertical

@

Connect
tum

the VOLT/DIY [ 13], [ 14] so as to make the signal fully
appear
(Cautio

<D

Tum the

the des ired cycle. Forthe general
3

cycles is suitable but when measuring the closed up

waveforms, displ ay

TRlG

GE

stable wavef

sur

ement

comprises two channels, just c

has

an

OlITPlIT

ntend

bra

cket r

POSrnO

[ 19]

. DISPLAY [21J A

VARIABLE[251 Fully

MODE
SOURCE
LEVEL

OFF

[29J

POSmON

the signal by

on the CRT.

n)

Do

AC) .

TIME

R LEVEL control [30] with having it rotated to make a

orm

[27J

[28]

[30]

on

control.

not

apply a signal gre

/DIY

of

appear

termi

nal[20],

to mea sure the frequency by means

8],

is practica ble to have the polarity

epr

esent the setting when using CH2.

ON

N[ 1

7],[

18J : Mid rotat

CHI

AUTO
CHI
Mid

NORM

the

the center of

meansofthe

switch [22] so as to make the signal bec

50-100 cycles is

.

CRT

'IN

measur

hoos

e oneofCH I

and

it is desirable for you

ion

andpushed

CW

andpushed

(c

m)

CW

and

pushed

(Cm

)

rotation

(positioning it at

endofCCW

by adjusting the

connector

ater

than

2S0V ( DC +

ement displayof2 or

proper.And

)

[9J [IOJ

adjust the

in

of

in

and

peak

and

a

ome

38

®

If

the signal to be measured does not trigger or the

measurement is
VOLT/D1V switch is position ed
XS MAG) [ lSJ [ 16]. At this time. where the VOLT
set to SmV, it becomes

difficult beca use of its weakness though the

on

SmV. pull the VARIABLE (PULL

/ON

lmV/ON

and

the frequency wide

width decrea ses to 7 MH z. However. the noise increases on the

trace.

® If the signal you wish to observe is a high frequency, thus

resulting in too many cycles tho ugh th e TIME/D1V switch which

of

0

.2~s.

is set to the position

pull the
termi nal ( PULL X10 MAG) [ 2S].
by ten [

J times so that

0.2~s

becomes 20ns/div and

IO

becomesSOns/div.

O.S~

s

0.2 and

less is the calibrated terminal. (When magnified by XIO in

lus

/di

v, the value is ± 10%

than

I ps, the value is ± S%) .

(j)

When

measuring DC or very low frequency. the AC coupling

MAG

arc the uncalibrated term inal

and

results in the attenuation of signal or distortion so that use
the instrument after having the AC-

oned

positi
Caution : Where the wavef

to DC.

ormofvery low AC level is loaded on

the high DC voltage. it may not appear on DC

position.

The

NORMofTRI

GGER MODE switch [27J is the position

to be
reswept. When observing sig
can
also perform the measurement by adj usting the T

LEVEL

.

[30].

(2)

Dual-trace measuremen t

Dual-trace measu rement is the major function of this instrument,

OS-3OOO

0 . The measuring procedure is same as thatof2-2-4

single-trace measurement abov e with the exception of the following :

CD

Set the V

MODE

switch [ 19J to dual.

Use ALT for relatively high-frequency signals (TIME/ON switch

:O.2rns or faster). and usc CHOP for
signals (TIME/DIV switch : O.Srns or slower).

'TIM

E VARIABLE

The

n the sweep speed increases

O.S~s

and

1us or

when mag nified by XIO in less

OC.G

NO switch [ 11], [ 12J

na

l frequency belo w 2SHz, you

relat ivel y l

ow-

freq uency

switch is

band

RIGGE

R

39

@ If the two channels are of the same freque ncy. you can exactly

OU

initiate the triggering with TR IGG ER S

S,M"'

'''IIH'

. 1..... 1 \hI1

ISVt< ,., 1..1

1

..

(a) Compositive video signa l

I

:

,

- '--

(b)TV-V coupling

RCE switch [2

s1

I

~

m

, I I

(c) TV-H coupling

r_~r_TI

,

I

,

1

"-

f-

-

i
I

\I

.

,

'I

(d) SYNC polarity

Fig. 2-7.

III

l1T

~

m

II

Ie

!

I

I

\...

M

'TV sinc s ignal

I 1

.1

r-

t

'-,

separation

1

1Il"",1,\'( "'1.AlI T'r

~_u.;1CJ'o

I

40

(3)

Trigger selection

Triggering is the most co mplicated operatio n to perform for the

osci ll

osco

pe because this instrument has man y requirements that

have to be incidentally applied. and it requires an exact

synch ronization as well.

CD

Trigger mode selection
Auto trigger mode :
Since the synchronized sweep alwa ys

appear

s. even though there

exists no signal nor has the trigger adjusting been done

improperly granting that there exists a signal. you have
nothing to worry about that erro rs can possibly arise from the
N

ORM

.
However. where the signal frequency is less than 25Hz. the
cannot
the NO RM positi

be used. At this time. the mea surement has to be

on

.
NO RM trigger mode :
CRT b
trigger MODE

there is no signal, that the synchronization adjusting has b

d

incorrectly adj usted or that the YOLT

improperly positi
TV-V. TV-H trigger m
The
separating the waveform such as a co

(Fig. 2-7(a » into the horiz ontal
adding
of

Trigger M

horizo nta l components of the TV signal
Trigger MODE switch to TV-H. When the TRI
separated (Fig. 2-7

negative/ - ).

eam

appears only when the signal is synchronized.

doc

s not cause the trace to appea r in case that

one

improperly

and

that the venieal POSITION has been

/D

IY switch has been

oned

.

ode

:

cleanly synchronized waveform canbe observed with

mpo

site video signal

and

a TV sync separa t

vertical

compo

OD

E switch switch to TV-Y. For the sync

vertical

ion

circuit,For the sync

nents of the TV signal (Fig. 2-7(b » . set the

compon

(Fig

. 2-7(c».set the

GGERhas

(d».the TV sync polarity sho uld be

hron

ents by

izatio n

hro

nization

AUTO

done

This

een

been

at

of

41

@ Trigger point selection

The SLOPE switch determines wheth er the sweep shall start from

the rise-starting poi nt or from the fall-starting point. (See
Fig. 2-8).
Depressed switch r

esents the rise-starting point

and

epr

released switch indicates the fallstarting point.

Q) Trigger level selection

This position represents the starting p
is input with either CH I or

CH2

The signal starting point varies as shown

turning the

TRIGGER

LEVEL control [30] to the left

ointofthe signal which

.

on

Fig. 2-9

by

and

right.

42

POSITt

y{

Sl

Ol'{(

'~~

I·ISI..1l1'.... ..1

POSITt.(

sco-r

,/~t(.A

T'Y

l

-,

~

STA8l { Il'I

Sll'C>

I

~'~

I

"

"'

C~lI

(a)

Sawtooth waveform

I

~;HJ"

(b)

I ) STAA
N{ (,Al '';(

I IS lAIlTt

I'«(,ATI';{ Sl

'

~Lt

Pf..>

1.IS"'Alt~

POSlflY( Sl cP {

Square

uec ..\

SLoPE

l'C;

"

~

[

-

POflT

, I

""

".~

-

AT

waveform

LI

j-

i

1

L....,j

-

I

1/ II

u

r-«

~

/ 1

II

'-

f-

-

-

-

Fig. 2-8. Trigger

ll

Y1l

"'"

NO

'::;:...

0

Fig. 2-9. Trigger level selection

Start

--

Poi

point

nt

selection

(..0 Additi on and difference measurements

The measurementofthe addition and difference isitfunction

repres

entin

g one waveform by addin g two signals. The operation of

the addition (AD D) represents the algebraic sum of the CH I and CH2
signals, and the opera tion of the difference

algebraic difference between the CHI and CH2 signals.

Measuring procedure

ADD

of

this instrument,

of

follows :

I. Set up per paragraph 2-2-4(2) dual-trace meas urement.

2. Set both V

OLTS/DIY

switch [ 13J and [ 14J to the same

and turn the VARIABLE controls [ 15J and [ 16J fully clockwise
until being click-stopped. Where the amplitude difference
the two signals is considerably large, reduce both VOLTS

switches simultaneously as much as to make the amplitude of the

ar

ger signal be within the screen display.

l

TRIG

GER

3. Select the

4. Set the V.

MOD

switch having the biggest signal.

E switch [ 19] to

ADD
Then, the algebraic sum of the CH I and CH2 signals appea rs as a
signal waveform. At this time, since the position cha nge of

ont

Vertical POSITION c

rols [17] and [18J varies the measurement

values, operation shall be prohibited.

e)

(Not

If the two i
signals ap
traces (e.g. 4.2 DIY

Where the two

the two signals

npu

t signals have the same phase, the two

pear

as the algebraic

+

1.2

DIY = 5.4 DIY).

input

signals have 1800counter-phase,

app

ear as the difference (e.g. 4.2 DIY

represents the

OS·.1I1(~

)I)SRS

pOS1l10

of

/DIY

position)

sumofthe individual

i

-,

as

n

1.2 DIY

= 3.0 DIY).

5. If the pop amplitud e of the result

ant

trace is very small
signal, perform the measurement after having a large marking
made on the screen display with adju sting both VOLTS/DIY
switches.

There is another method measuring the algebraic

sum
signals of this instrumenL
Tha

t is the method p

pulling the CH2 Vertical

INY" is marked.

CH2
When the

CH

2 Vertical
signal has the same
difference

of

amplitude (e.g. 4.2 DIY - 1.2 DIY = 3.0 DIY).

If the input signals have 180

will be the arithmetic

= 5.4 DIY).

(5)

X-V operation

The internal time bases
deflections of both the

erf

orming the measurement at the same time when

POSmON

POSmON

pha

se, the waveformofADD

0

sum

of

the amplitude (e.g. 4.2 DIY +

control [ 18] on which'PULL

cdntrol is pulled

will be the

of phase difference, the two signals

are not used in X-V operation

vertical

and

horizontal directions are all
operated via external signals.
Trigger switches
inoperative in the

Proceed with the

I. Tum the TIMElDIY switch [22] fully clockwise to its

and

their associated controls

X-V

mode.

X-V operation as follows :

and

connectors are

position.
Caution :

When
spot would damage the

appearing as the spot without being swepts, the

CRT

the trace intensity to prevent

phosphor.

it

from becoming too

brighL

( *

05

-3060D: Press X-Y switch on the horizontal display [

2. If .you apply the vertical signal to the CH2, Y IN connector
[ 10]

and

the horizontal signal to the

the trace
Th

en, adjust the trace to the proper brightness.

appears.

3. Adjust the trace height with the

the trace width with the
PULL
The

X5

TIME

MAG

switches [ 15] [16] and the VARIABLE as needed.

VARIABLE control [25] is measured when it remains

CH

I VOLTS

CHI

, X IN connector [9],

CH2

VOLTS/DIY switch [ 14]

/DIY

switch [ 13]. Adjust the

pushed in.

of the two

and

the input

and

the

X-V

As

such, reduce

21

))

1.2

DIY

and

45

4. If you wish to move the waveform vertically rv axis). adju st

the CH2 Vertical PO
Horizontal PO

Sm

ON

ON control [ ISJ

eonlrol [26J when you inte nd to move the

and

adjust the

Sm

waveform hori zonta lly (X-axis).
(The CH I Vertical POSITI

control

[17]

docs not opera te in the

ON

X-Y mode).

5. The phase of the vertical

(Ysaxis) signal

can

be inverted ISo'

by pulling the CH2 Vertical POSITION knob [ ISJ.

(6) Delayed-time base operation

OS·

3IXXI

The

DSRS contains two axis.

immediately up given with trigger,
axis. They are used to measure the

The

A time axis start sweep

and

B time axis starts 2nd time

com

plicated andhorizontally

magnified waveform.

CD

Basic delayed sweep. For delayed sweep, proceed as follows

A. Set up the inst

desire.

B.

Make

sure the B T

C. Press the A INT

rument

for whatever vertical mode you

RIG'Dpushbuttonis o

HORIZ

DISPLAY pu

ut

shbutton

. A sectionof
tracevs) will brighten.
<Note> The intensified portion will be quite smaIl if

there is a large difference between the setting
the A and B TIME

um

D. T

the B

TIME/DN switch [23J until the intensified
portion of the trace widens to an
portion of the trace you wish to

um

E. T

intensificati

the DELAY

on

TIM

over the portionof the trace you wish to

/DN

switches.

amo

unt eq

magn

ify (see Fig. 2-6(b) ) .

ual

E POS control [24J to position the

magnify.

HORI

F. Press the B

Z DISPLAY pushbutton.

trace intensified in Step 5 now appe

of

the full width

the CRT screen.The trace now displayed

is being swept by the B timebase

onal

G. If needed, additi

enlargement is possible by pullin g

the A VARIABLE knob [25J for

ar

(F

ig. 2-6Cc)).

PULLXIO

That

s as spreaded over

MAG.

the

of

to the

portionofthe

-16

® Triggered B sweep

In basic delayed sweep, the
signal
comparate
problem with this is that mai n
in the

(100 : I

To prev

itself, or a time-relate trigger signal. The DELAY T
control
sweeps : the actual delay time will be that plus the additional
time until the next available trigger.
actual delay time is variable only with step resolution, in
increments of the interval betwen triggers.

The maximum

thou

@

For

A. Set up the scope for basic delayed sweep as described in

B. Press in the

event, it begins when the main (A umebase) sweep cross

level scuing by DELAY

B sweep at higb ratiosofA to B

and

up).

ent

this, the B sweep can be triggered by the signal

then

determines the mini

mag

nifica tion possible by this tec

sand

times. (CRT brightness be

triggered B sweep, proceed as follows :

the preced ing paragr

B

TRIG'Dpushbutton[21], and adjust the

Trigger LEVEL control

now triggering on the same trigger signal as the A
timebase. Th e stan of
trailing edge of the trigger signal : turning the DELAY

TIME

POS

control will not change this.

B

tirncaxis

tirn ea xis jitter becomes apparent

mum

aph

s.

[3

oJ

if necessary. Th e B timeaxis is

B sweep will always be a leading or

is not triggered by a

TIME

ing

POS. knob. The only

TIME

/DN

IME

delay time between A

Th

e result is that

hnique

the limiting factor.

switch setting

POS

and

is several

B

,)7

a. A TIM EBASE DIS PLAY

~

INTENSIFIED

PORTlCN

A SWH P

b. A INTENSIFIED BY

B DISPLAY

C, B TIME BASE DISPLAY

Of

'f

,

,

l

..

T

PH~1

, ... (

1

,

,

7

,

,

,

,

,

,

,

'I'

. . .

,

,

,

,

,

,

,

Fig.

2-10.

Sweep magnifi cation by B time axis

2-2-5. Digital storage function

Digital storage function operates in the following sequence :

(j

) NORMAL storage mode (NORM)

CD

NORMAL storage mode (NORM) displays the waveform to be stored

in the real mode.

(%)

Press storage switch.

Q) Wav

® When TIME

ef

orm sweeps all the trigger devices depending on the
setting of adjustor in the front size.
stored is displayed on the
retrieval

about three seconds to retrieve

sweep range of 0

that time.
If sweep speed is low, therefore, waveform is not displayed on
the CRT immediately

side.

repeated waveforms may be stored.

and

displayofwaveform require more time. It takes

.1

s/div. Trigger signal is generated after

/DIV

fadjustor is between

CRT

upon

adjusting the adjustor on the front

The

waveform to be

. It sweep speed is low, the

and

display waveform in the

51'S

/div

and 0.2s

/div

® Pressing HOLD switch in NORMAL STORAGE mode stops the correction

operation by CRT display, and the CRT display stops.

Equivalent sampling mode (EQUIV)

(2)

When TIME / DlV switch is set between

*OS

-:\OW

D:0.1

~

I

EQUIV mode. Pay attention to the followings in this

CD

The edge initially rising or dropping in trace (left end) may not be displayed
in the repeated mode range.
of waveforms appearing after the firstone.

/div-2~

/div)

The repeated waveform can be stored in the

In this case, measure the rising or dropping edge

0.

21'S

/div and

21'S

mode:

/ div.

the intermittent and

49

I

17

t-,

1/

)

The edge initially /

rising or dropping

(left e

in trace

may

not
in the repeated mode
range.

@

It

(for

nd)

be displayed

takes longer than 5 seconds to store input signal below 1kHz

200Hz

input

Fig. 2

).

V

l-

-f

I

I"

f\

-11.

EQUIV mode

In this case, measure
the risign or dropping

I---

of

edge
appearing after the
first one.

G

® The noise may be included when storing low frequency signal. It

is desirous to use spherica l wave with rising time shorter

O.3

~s

or sine wave with frequency

Note : Sampling rate in storage mode :

When

total hori zontal scale
sampling data.

there is no horizontal

of

higherthan

magn

IOdiv.

lMHz

.

ification in storage mode ,

on

CRT is composed of 1000

waveforms

than

so

(3)

ROLL mode
The

displayed waveform flows to the left from the right.

int

Correction po

the signal lower tha n 100Hz or so. To stop the ROLL mode, press

HOLD

switch to hold the final waveform on CRT.

for new data and ROLL mode make it easy to measure

CRT

(~

I

I \

II

•

•

\ I

\

·

.

•

·

\

IJ

\)

xisting

E

Note a) ALIASING distinction

data

If

the

the sample clock frequency is added in the sweep range
when measuring signal in storage mode (NORM, AVG ),
ALIASING occurs.

In this case, the waveform obtained by sample clock
frequency from the input signal frequency is displayed.
This

waveform may be regarded as

If

ALIASIANG is doubtful , convert into REAL

\ I 1\ 11\ I

\ I \ I \ I \ I

\

11

\ 1

\11

Stored data

Fig. 2-12.

input

signal

ROLL

hav

<

•

."

,

·

•

•

\ T .

•

ngger P

'II

ing frequency higher

!

new data.

New dat

mode

correct

oint for

a

thanahalf

TIME

mode to

it

check whether
being measured.

It

ALIASING
signal frequency - sampling clock frequency) is displayed
with its top and bottom section nearly flat. So
possible to decide ALIASING in
difference between these two displays.

is same as the operating mode display

occur

s, the waveform

SI

of

NORM

con

sideration of the

mode (input

it

is

b) ROLL wavef

ROLL

orm

correction

mode is possible in high speed ran ge (up to
O.5s/div.l . If vertical mode is set to DUAL, the
waveform

endin

dep

display rate. In reality, the wavef

(4) Single operation in

docs not move smoothly at O.Ss/d iv. which occurs

g on the relation between the waveform data and

orm

is normal.

NORM

mode
With storage mode set to NORM, pressing SING LE switch performs
NORM
mode srnapiing, and renews the wavef
it

aut

omatically converts into

Q) SING LE operation procedure

a) Set storage

modetoNORM,and

store and display

od

b) Set trigger m

such a location as suitable to measure input signal.

c)Press

@

Pr

essing SINGLE switch

SINGLE

e switch to NORM,

switch

HOLD

input

signal in the operation mode.

con

standby state. Wh en trigger signal is applied, the

sampling is carried out. The

input

light up when the

signal trigger is not detected.

orm

state.

verts into

SINGLE

on the tube surface.

Then

adjust the adjustor knob to

and

set trigger level to

input

signal trigger

SINGL

E

switch LED continues to

If

trigger signal is applied or trigger mode is set to AUTO,

GL

OLD

E switch L

state. (Hold

SIN

H

® When trigger mode switch is set to

ED

goes out, and automatically converts into

LED

lights up).

AUTO,SINGL

E treatme nt is

performed if inp ut signal is not triggered. So the DC signal

can be measured in this mode.

@)

Wh en trigger signal enters in N.ORM mode, the

cur

s for the waveform

oc

and

all the

data

renew the tube surface into new wavef

datacorr

esponding to

NORM

one

tube surface,

sampling

orm

data

This fun ction is effective in storing the instaneous waveform.

GL

Note : SIN

state.
perf

E does not operate in averaging, ROLL, EQUIV or

When

orm

vertical mode is dual (AL

s signale operation.

T),

CHI

(or

CH2

.

MAG
)

(5)

HOL

D mode

Pressing

In this mode, sampling operation stops in each operating mode.

When mode enters into

continuously displayed.

mode are set, the waveform

(6) SAVE operation (SAVE)

The waveform data sampled
stored in the storage memory.

memory can be displayed on the
SAVE operation

HOLD

switch in EQUIV,

HOLD

When

the waveform

data

and

Data

NORM

mode, the waveform display dataare

can not be moved vertically.

displayed in storage

CRT

or ROLL mode sets H

data

displayed after

which .are stored in the storage

.

(D Use SAVE switch to set the storage memory concerned.

@ Sampling data are displayed in storage mode. Press

to stop waveform.

@ Pressintg SAVE switch saves the suspended waveform in the

storage memory.

CD

When
that waveform is stored.

® When vertical mode switch is set to

is stored storage memory A
switch. When vertical
is stored in storage memory A while
storage memory

(7)

Storage memory display (

The details stored in storage memory in

the CRT in next

(D Pressing this switch once, recall switch displays

waveform stored in storage memory A

and

this switch Once more, the waveform stored in storage memory B
is displayed. Pressing this switch one more time displays b
the waveform stored in storage memory A and B
value.

Pressing this switch again erases di

value.

@

The
vertically.

storage switch

TIME

/ON

waveform

LED

lights up instantaneously, it means

CHI.CH2orADD

and

B in tum whenever pressing SAVE

mod

e switch is set to

CH

B.

REC

ALL)

HOLD

ope

ration,and comparable with current wavef

) regardless of vertical mode switch. Pressing

spla

data

displayed in storage mode

DUAL

2 waveform is stored in

and

the set value (V/div.

yed waveform

, CH I wavef

mode are displayed on

both

and

cannot

mode

HOLD

the

the set

and

be moved

OLD

HOLD

can be

switch

, waveform

orm

orm

.

oth

set

mode.

53

(8) x-v plotter output (PLOT)

Waveform displayed in

RS-232C by pressin g

HOLD

PLO

T Sf\V.

(PLOT switch operates only in

10 item 3 for

Refer

(9) Horizontal magnificati

mor

e details.

on

display (Time axis

There are two horizontal maganificati

operatio

I. Magnification (XIO) by XIO

2.

(I)

n:

HOLD

XIO MAG

waveform magnification by T

Displayed waveform magnified ten times from the center of

orm

original wavef
The

wavef

orm

in the tube surface storage.

which is slored in save memory cannot be

magnified.

Gi)

Pulling XIO MAG switch displays
times from the ce
lIE

If it is displayed on both sides of CH I

nter

Idiv. sector magnifie s ten times from the center of CH I
and

CH2

original waveform.

mode is sent to X-V plotter throu gh

HOLD

MAG

of original wavef

rnode.)

MAG

on

methods in storage

switch.

IME

/DIV.

ldi

v. sector magnified ten

orm

.

)

and

CH2, the

CHI

CH

Original state

Magnified state

2

Fig.

2-13.

5-1

X10

MAG

(j))

When switch is released by pressing XIOMAG

returns to the original waveform.

(2)

HOLD
When
mode,

wavef

orm

magnifiaction using

TIME

/DIY
storage waveform is displayed on the tube surface in
manipulatingTIME

/DIY

switch makes it possible to

continuously magnify and displ ay up to ten times the

switch set value. Magnificati on is done fromthe center of
original wavef

orm

as in (

I)

.

[Exampleofmagnificationoperation]

Gil

Display the original waveform

(j))

T

urn

TIM

E/DIV switch clockwise to change

set value. When

TIME/DIY

and

set

HOLD

TIME/DI

set value is cha nged on the tube

surface waveform is magnified as correspond ing to the set

value.

switch, it

switch

TIME

mode.

HOLD

/DIY

V to rapid

55

(i)

Original

TIMEIDIV

HOLD mode

(ii) Rotating TIME/ DIY

switch. it magnifies

two times with TIM E/
DlV = O.5ms/d iv.

lms/div

CH1

CH

CHI

CH2

fV\II.NVINIM

2

JL

WJ

UUULU

fV\NV\

.JLJLJUUL

(iii) Rotating TIME / DIY agam

switch, it magnifies

ten times with
OlV

= O.5ms/d iv.

@ This operation performs horizontal magnification up to ten

times. Therefore TIME

origina l waveform. But

waveform is not magnified any more even if you turns

TIME/OIV

@ When magnification is displayed, the magnification rate is

grad ually reduced and returned to the original waveform by
selling the TIM E
turning TIME

TIM

E/

/O

lV switch

TIM

E/OIV display is not cha nged

clockwise beyond that ext

/OlV

set switch to the slower side while

/OIV

switch cou nterclockwise.

CHI

CH2

Fig. 2

can

~

-FL

·1.

HOLD waveform

magn ification

set a tenth the

ent

and

) 6

(10)Interpolation

As the horizontal magnification rate increases, sine wave loo ks

stepwise and pulse wave g

In this case, interpolationmakes it easy to watch the waveform.

Interpolation is divided

oes

amiss.

int

o linea r and sine interpolations .
Every time you press MEN U selector switch, interpolation selectio n
function converts as follows :

--->

Linear
The current
sweep factor on
lin

ear/sine interpolations

interpolat

int

erp

the

ion

--->

sine interpolati

olationmode is

bottom ri

make

ght

s pul se/

on

--->

no

int

erp

olation

indicat

ed as symbol on the sweep

of tube surface. Selectin g

sin

e wave of

input

clearly displayed on the tube.

(j)

Indi

cate the original waveform,

(2) Carry out hori

TIME

/DIY

. switch,
displayed
(Refer to

on

(9) hori

magnifi cationoperatio

(3)

In (2),
whenever

int

erp

pr

essing

zontal

magnification di

and

have the waveform to be

the tub e surface.

zontal

magnification display for h

n).

olation proceeds in the following sequence

INTERPOLATION

and

set

splay

switch.

the

HOLD

using

mode.

XIO

interp

orizontal

signal

MAG

olated

or

Linear inte

rpo

lation '

Fig.

Sine inte

2-15

57

rpo

latio n

Interpolation

No

int

erp

olat

,

'-

ion

In X I() MAG magnilication, pressing X I() MAG after interpolation
stops interpolation and normal magnification display enters

effect.

into
In normal magnification, pulling X10 MAG after interpolation
stops interpolation and X10 MAG magnification display enters
into effect.

(II)

ALT MAG mode

An original waveform and magnified waveform arc displayed simultaneously.
When awaveform of CHI displayed and ALT MAG mode is selected,

the original waveform and its maguified waveform are displayed
simultaneously.
To perform

mode

VERT

ICAL

the ALT MAG display

10 CII2 first, and then set in the ALT MAG mede.

~

IODE

ClII
CII2

DUAL DUAL(CHl. CH2l

ADD

NOR

MAL

DISPLAY

CIII WAV
CIJ2WAVE

WAVEF
ADD(

WAVEFORM I ADD(CIIt + CIJ2)magnified waveform

Ef

FORM

ORM IDUAL(ClII

CHl+CIJ2) ADD(ClI l + C

of

a waveformofCH2, set the vertical

ORM CHI origi

CHZoriginalwaveform

DUAL(CIII,( 12)original

nal

waveform

MAG

ALT

/ CHI magnifie

ICH2magnified

waveform

+C

H2)magnified waveform

1I2)

originalwaveform

d.

waveform

waveform

EX) ALT MAG OPERATION (CII I)

I) ScI the

Press IIOLD switch to stop waveform,

2)
Use MENU switch 10

3)

4) Manipulating TIME

and display up to ten times the TIME

S) Move the CURSOR

The magnified waveform is displayed at approximately 3div below

6)

vertical mode 10 CHI first, and displayed the waveformofCH I

se

rALT MAG mode and then select ALT MAG on.

IDIV switch makes it possible to continuously magnify

IDIV switch set value,

10 a magnified point by the MAG POINT cursor

the original waveform

f-

:

Magnified

l

ellI original

-

CH1

Initial

ri

g. I - I

magn

ifiedwaveform

wavef

orm

5X

(12)

GO-NOGO
The

GO

judge

ment

mode

-NOGO
domai

judgement

function is used to

n (Boundary)

se

TI,e input signals acquired in sequence are

When

the re

sult

s satify the conditions (COMPARE. HO LP ). these processing

arc performed automat ically.

This function is used to monito r

frequently,

or

to detect undesired

from the reference signal.

judge

if te acquired signal is in the

i on the CRT screen.

compared

ah

nonnal

sam

pheno

ples which will output signlas different

with the boundary,

mena

which will

occur

not so

GO-NOGO

I)

GO-NOGO
condition. (

CA

RE

2) Use M

3) Selet the condition to

<D

When a w

OPERATION

is perform

The

mode AVERAGI NG . R

ed by limited co nuitions please confirm the operating

LL other than operating).

ENU

switch set

GO-NOG

issue GO -N

avef

orm

is out

of

the judgement

® " is onl y co mparing

4) Usc

5) To perform

6) XH : Comparing wavefo rm in the

MEN

U selector switch set G

pressing

OH

MEN

U selec tor switch

O.4div

GO

--7

-NOGO

O.8div

operation, press RC

cha

--7

: If the result waveform is outofthe judgme nt domain

Holds a waveform on the screen.

ope

ration

I

I

I

"'"

I I

I

''j;

,

I

OLL

, MAG. D

UAL

, SING LE,

O mode.

OGO

from the following two option.

domain

O-NOGO

judgement

domain

.

nges mode in the follow ing seq uence.

1.2div

ju

--7

O.4div

ALL

Switch

dgme nt dom ain

rcsulls

(HOLD

-

I

I
I
I I

,

•

j->

I 1

)

I

,

I

,

~

.

1/

'-(

(13)

MENU

mode

Fig. 1

-2

59

Using MENU switch. it is possible to set interpolation. wavef
smoothing ON/OFF in average horizon tal magn ifi
pressing MENU switch. [ PROB], [SMTH], [AV

appear on the top of CRT one by one and

Pressing the switch again release s

<D

Probe factor selector mode (PROB)
WhenMENU
right of CRT, you c

LED

lights up and

an

select

MENU

PROBE

mode, and

[PROB

factor.

XIO

cat

ion whenever

G],

[ROLL] and [ ITPL]

LED

lights np.

LED

] is displaye d on the top

I X
10 X

PROBE

PROBE

Xl

orm

goes out.

Using
mode.

@ Smo

When
right

menu

oth

ing selector

MENU

of

CRT,

selector switch, it is possible to select XIO/XI

mode(SMTH)

LED

lights up

SMOOTHING

and

turns

tSMTH]

ON

/OFF

rs-r~-r~-r~-r--r- -r- 0- r; -r-F

l _ _ L _ _ L

__

l _ _ L _ _ L

__

l _ _ l

IT

In

OFF

state, storage waveform is displayed in dots.

urn

ing it

T
wavef

gna

si
it is displayed with ampl itude low. In this case, set
smoothing mode to
similar to that

ON

, the dots are connected to display smooth

orm

. If sampling frequency is low in connection with input

l (when signal with more

OFF

of

inpu

t signal.

than

5 cycles

to display the waveform with amplitude

is displayed on the top

.

-1

__

l _ --.J

OFF

:

~l

SMOOTHIN

ON

:

SMOOTHIN

per

each sector),

G

G

60

Q)

AVERAGING
When MENU LED

right

of

CRT, the

The

number

selector switch.
from 4

The

Ibm

average waveform is displayed after
the set sweep
the

number

setting

mode

lights

numberof

of averaging operations is changeahle using

Pressing

256.

number.The

same

as the

waveform display is corrected.

Thus

it is possible to detect non-repetitive signal

influence by non-trigger noise.
The

numberofaveraging operations is same as the set average

number

. In

ROLL

mode, no averaging

(AV

G)

up and [AV

G]

averaging operations

NORM
4

16

64

256

MENU

numberofsweeps,

selector switch changes

dataisobtained

averageofnext

operation

is displayed on the top

can

be set.

MENU

NORM

for

dataisohtained

and

the average

under

in

the

is carried out.

61

<D

ROLL selector mode
When MENU LED lights up and [ ROLL] is displayed on the top
right of CRT, ROLL ON/OFF can be selected.

r~-r~-r~-r~-r - -r- -r

l

__

L

__L__

L _ _ L

__

l _ _ L

-0

__

- r

~

l _ _ L

-r - -1

_-J

ON

OFF

ROLL ON/OFF is carried out using MENU selector switch.

® Interpolation selector mode (ITPL)

When MENU LED lights up

right

of

CRT. you can select interpolation.

and

[ITPL] is displayed on the top

OFF
SIN
LIN

Mode is selected using

MENU

selector switch. Pressing this

switch changes mode in the following sequence :

.....

SIN

.....

OFF

.....

LIN
Interpolation is

LIN

10 interpolate the magnified waveform data

when magnifyin g the display waveform horizontally (excluding
storage wavef

orm

). In

OFF

position, waveform is magnified

horizontally. In SIN position. the initial waveform becomes
similar
state, considerable ranging takes place.

10 sine wave.

If

the square wave is connected in this

and

the displayed
waveform looks different from the input waveform. In this
case. set switch to LIN from

OFF

. In LIN position, data are
interpolated linearly and waveform is displayed more smooth ly
than

in O

FF

position.

Note In SIN position , set the amplitudeofinput signal below

8 DIV on
connected on the

CRT

. If any signal with large amplitude is

CRT

, tortion is observed in the top
bottom sector of waveform. After waveform stops in ROLL
mode, the interpolation operates depending on the
selection between
waveform does not stop, both the MAG XIO

MAG

XIO mode

and

TIME/DIV.IfROLL

and

interpolation modes do not operate.

® ALT MAG selector mode (AMAG)

When MENU LED lights up and [AMAG) is displayed on the top right

of

CRT, you can select ALT MAG.

and

OFF:AL

T MAG

OFF

ON:ALTMAGON

ON/ OFF can be selected using MENU selector switch.

® GO-NOGO selector mode (G-No)

When MENU LED lights up and [G-NO] is displayed on the top right

RT,

T

of C

I)

XH/OH can beselected using MENU selector switch.

2) IF XH mode (or OH mode) is selected,

you can select GO-NOGO.

r----.-

----.

--,----.

-,---.-

----.

-~

~

O.4<1iv:JUDGEMENT
0

.8div

:JUDGEM

1.2dIV

:JUDGEM

~-,_~~

T

XH:COM

OH: HOLD

PAR

E

~

T

DOMAIN0.4<11'
ENTDOMAINO.8<l1v
ENTDOMAIN1.2d

IV

Pressing MENU selector switch changes mode in the following sequence

O.

4div

--->

O.8div

--->

1.2div

6.1

--->

O.4div

® Menu display in the mode " the than MEN U mode

In the modes other than MENU, the setting information of the numbe r
average and the smoothing is displayed as follows.

of

EQ

UIV

:EQUlVALENT

(0.

2J.o/

div(60MHLO.IJ"Jdiv)to2",1

NORM:NORMAL

(5",1

div

to0

ROLL:ROLL

MODE

(0.5s1divto0251div)

SAMPLING

SAMPLING

.15

1div)

BLANK

AV4:4times of

A V 16:

[

AV64 :64

AV256:256times of average

div)

:NoIaverage

average

16timesofaverage

1ime

sof

SA:

[

SB:SAVE

average

t;

SAVE

BLANK

Memory

Memory

mOO

thingon

:Smoothing off

A
B

(\ 4) X-Y operation

The

interna l time axis is not used for ,X-Y measureme nt.
opera

X-V

I. Set the vertical mode selector switch to

(

If

2. Pressi ng
HOL

tion is carried

it is set to

CHI,

HOLD

D mode. Th en sampling operation stops whil e waveform

out

as follows :

CH2

or AD D, erro r may

switch in EQUIV, NORM or ROLL mode enters into

display data arc displayed continuously.

urn

3. T

A TIMEIDIV switch [22J completely clockwise to X-V

position . ( * OS-3

X·y

)

()('()D

: Set horizontal

(Note) :If it is displayed in dots

ent

fluoresc

surface of CRT may be damaged.Ifthe

brightness is to high, lower it.

DU

mode

" lector switch to

and

not deflected, the

AL.

OCCU

R) .

65

2

-3

MEASUR

This section contains the measurem ent procedures applying basic functions

of this instrument.OS-3

Though only some of them arc introduced, we assure you that a variety

specific mea

As the measurement applications set out herein are the important and

essential particulars, it is desirable for you to
with those basic operating proc

Amp

2-3-1.

EMEN

sur

litude Measurem

T APPLICATIONS

02(J

().

ement can also be performed based on the said functions.

mak

e yourself familiar

edur

es while you use the oscilloscope.

ent

The latest trigger sweep osc illoscope has two majorfunctions.

amp

The first of these is to measure the

It

is practicable to perform all the measurement with the oscilloscope

r

angin

g from th e simple waveforms to the complex ones.

Th

e oscilloscope in general has two different voltage measurements,

namely peak-to-peak

(1'-1') measurement.

Instantaneous voltage measurement is to measure the voltageofeach
point on the waveform from a ground reference.

In order for you to p

(1'-1') measurement

erf

orm the aforementioned

make sure that the VARIABL E controls are fully t

(J) Peak-to-Peak (1'-1') Voltage Measurem

1. Set up the vertical
ma nner as that set out in

2. Adjust the TIME/DIV switch

waveform

of

mode

switches

2-2. BASIC MEAS

as many as two

[221in such a manner as to form a

or

shall he so adjusted as to ma ke the wavef

litude.

and

ins

tantan

eous peak-to-peak

measur

urned

ement

s exactly,

clockwise.

ent

of

the oscilloscope in the same

UREMENTS.

three cycles and the VOLTS/OIV switch

orm

be on the CRT screen

display.

3. Adjust
make

of

line

the Vertical POSITION contro ls 1

the end of the wavefor m align with the horizontal grariculc

the CRT screen display. (See Fig. 2-7).

171

and [ IXI properly and

of

4. Adjust the Horizontal POSITION control 1261 and make the end of the
waveform be on the central vertical lineofthe CRT scree n display.
(This line is graduated in 0.2 scale divisions) .

66

5. Co unt the

numberofdivisionsofboth the top and botto mofthe

waveform and multiply the resultant number by the value

/DIV

VOLTS
For

examp

the wavef

would in fact be 8.0

switch. thus result ing in the peak-to-peak voltage.

le, if the value of the VOLTS/DIV switch was set to 2V when

orm

same

as that shown in Fig. 2-16 had bee n measured, it

Vp

-p,

(4.0divX 2.0V= 8.0V)

ind

6. If the
mea

ication of the vertical magnification is X5, divide the

sur

ed value by 5.

However, if the probe is 10:1, multiply the voltage by 10.

7.

When mea

set the AC-

lIT

CA

surin

ION :

g a sine wave below 100Hz or a squa re wave below 1KHz,

DC

,GND switches to DC.
Wh

ere the waveform
voltage, the above mea
At this time ,

AC-DC,GND

perf

switches to DC.

(Wh en the mea

For

any

:

instrument

is lo

aded

with the high potential DC

surement

orm

the measurement with setting the

is difficult.

surementofAC com po

equipped

with readout function, movin

of

nen

t is needed).

the

cursor to the top and bottom of wavef
poten tial differen ce V on the screen.

antan

(2) Inst

1. Set up the vertical m

manner
BASIC

2. Adjust the

eous Voltage

as

that

set out in 2-2.

MEASURE

TlM

E/DIV switch [

Measurement

ode

MENT

switch of the oscilloscope in the same

above.

221

or [23I so as to become a complete

waveform ' and set the VOLTS/DIY switch to prod uce 4 to
(See Fig.

3. Set the AC

4. Turn the Vertical POS ITION control [1
with eit
positive (%) signal) or the up permost

2-(7) .

-DC,GND

her

the lowest central horizo ntal graticule line (in case

switch

(I

I)

or (12) to G ND.

71

or [ 18] and make it align

one

(when the signal is

ncgativef-) ) .
NOTE

: The vertical PO

SITION

cont

rols must not be touched until the

measure ment is completed.

orm

displays the

6 divisions

of

67

5. Set the AC/

If

the sig nal is positive ( ,1 ) . th e

refe

renc

appears

C

AlJrION : Wh ere the DC volta ge is relatively greatly l

6. Make the p

graticulc lin e

Gt'O/OC switch to DC.

wavef

orm

appears above the gro

e lin e and where the signal is negative

belo

w the ground reference lin e.

with the wavef

from

oth

oint

you wish to measure align with the central vertical

on

the CRT screen display by movi ng the Hori

orm

, then measure the AC portion separately

ers with selling the AC-OC ,GN O switch to AC.

(-

POSIT ION control lZo].

Since the

0.2 division, the mea
In the example cited for Fig. 2-7, if the VOLTS
positioned at 0,5V, the value bec

7. If the X5 ma gnified mov

in para
the re

8. After setting
curso r

cent

graph

sultant

(+

) to

ral vertical gra tieulc is graduated in sca les at every

surement

is easy to p

erf

orm

/OIV

ome

s 2,5V (5,0 divX0.5V= 2.5V).

ement

6 above by 5

is performed, divide the value mea

and

where the XIO P

value by 10.

READ

OUT

cursor (X)at

the

waveform to be mea

theGNO

sured

dis

voltage on the screen.

), the

.

ROBE

level, posit

pla

ys the ins

wavef

orm

oad

ed co mpa red

zont

switch is

is used, multiply

ionin

tantaneou

und

al

sur

g

ed

1:0.

s

68

Fig. 2

I

I

.l

: I

~

L

I

I

I

i

(

1\

\

.

iI

,

l

\

\

!I 1\

i i

1\

,

I

I
I

.

J

)

i 1 $

·16

. PEAK·TO·PEAK VOLTAGE MEASUREMENT

.l

!

T

>

H

o

.,

VE

RTIC

DISTA

~

Fig. 2

I
I

AL

NCE

I

11

I I

I

I

REFERENCE LINE

·17

. INSTANTANEOUS VOLTAGE MEASUREMENTS

69

I

~

5 DIV

2

-.3-~.

Time Interval Measu rem

ent

s

The second most important measurem
oscilloscope is the very measurement of time interval.

Since the divisions uniformly marked

calibrated to the time bases. the time interval measurement is

prac

ticable,

(I)

Basic Tec

hniq

ue

ent

of the synchronous-sweep

on

the CRT screen are all

The basic techniq ue for measuring time interval is described in this

section. In addition. characteristics measurem ent and variation

techniqu e using this technique will be helpful. if you apply the

following procedure

I. Set up switches in the same

, Set the TIM E/DIV switch

s:

manne

[n

] in such a manner as

r as that described in 2-2-4.

to

make the
\\ aveforrn appear on CRT screen display as large as possible.
Tum the TIM E VARIABLE control [25J fully cloc kwise until being

clickstopped .

Otherwise you so do. the measured value will be

requiring you to exercise due care.

ina

ccurate. thus

3. Adjust the Vertical POSITION controls [17] and [18] and make the
waveform you wish to measure align with the central horizontal
graticule line.

-+

. Turn the Horizontal Position control [26] and make the left side

of

the waveform correspond to the vertical gracitule line.

5. Cou nt the

numberof

to measure. Horizontal central line is graduated in divisi

graticule divisions up to the point you intend

on

s

ranging to 0.2 division.

70

6.Ifyou multip ly the value mea
E/D

by the TIM

IV switch. the time you wish to measure will be

obtained. If the T1MEIVRIAI:lLE knob 1251i, pulled

mode). divide the measured value by

sur

ed in Item 5 above by the value set

(X I(J magnified

10.

(2) Period . Pulse Width . and Duty Cycle Measurement

If you make good usc of the measurement based on the basic tech nique.

you can also measure the perio d of

pulse, pulse width,

and

dury cycle,
etc. When a complete period of pulse of the signal appears on the CRT
screen display, the period of pulse of that time can be measured.

or

example, if the TIME/DIV switch were .set to lOms, the measured value

F

one

of

cycle between A and C in Fig. 2-9 would be a waveform havin g a

period of cycle of IOmsX7= 70ms.

The pulse width represents the time between

In Fig. 2-IS, it is

1.5

division so that it becomes 1.5div X IOms=

15ms. However, in this example, as an 1.5 divisi

TIME

distance, should you set the

/ON

A and B.

on

is a rather short

switch to 2ms, it would be seen

magnified as shown on Fig. 2-ISb.

Then , though the pulse is short, the measureme nt accuracy becomes

increasingly better. Where it is still disp layed small even with

adjusting the TIM E

switch, it is advisable to perf

orm

the

/DN

measurement under XIO magnified condition by pulling the A VARIABLE knob

(25).
When pulse width and period are

kno

wn, dury cycle

can

be calculated.

Duty cycle is the percentage against ON-time of the pul se period (total

ON-andOFF

of

-time).

In Fig. 2-IS: the duty cycle is as follows :

D ty I

u cyc e Period - A C

(e. g) Duty cycle

lit Mea

The dury cycle of required wavef

(%)=Pul

sur

e the cycle by moving cursor. Th en measure the pulse width.

se width X100- A B

(%)=j~:~

X 100=21.4%

X 100

orm

is obtained by applying the

measured value to the formula.

71

A 8

c A

r~

~T-~

!

i

'r

I

f-t-

....

+ •

l

1-+

+1

8

,

I

,

I

i

I I

I

i

1

.

1

1

+1

~

'H

I

•

(a) roms DIvIS ION

Fig.

2-18

. TIME INTERVAL MEASUREMENT

lb) 2mS DIv IS ION

2-3-3. Frequency Measurement

Whe n an accurate mea

If

used.

you have the frequency cou nter connected to the CH I

sur

ement is needed, a frequency counter shall be

connector [20] on the rear panelofthe oscilloscpe, you will enjoy the

convenience
frequency measurement simultaneously. However, w
is not availabl e, the oscilloscope can directly meas ure the

orm

wavef
the waveform bearing a lot
period. First of all, in brief, you can simply

calculating with I/t as

appea ring in section 2-3-2
formula of

Hertz

rH

oh

ertzC

kil

and

advantage to perform both the waveform observing

that

can

hardly be measured by

of

suming

TimeInt

1/t.

when

period is depicted in seconds, the frequ ency is

z) ; period in millise

kf-lz

r . period in microsec

hen

a frequency counter

modulat

meansofa frequency counter,

noise.

that

cond

Frequ

ency is interrelated to the

obtain

the frequency by

you' hav e already known the period t

erval

Mea

surement.

With

svms) yields frequency in

ond

s (

IlS)

yields fr

equ

ency in

rnegahertzt.Ml-lz).

Th

e accuracyoffrequency is determined by an accurate calibration

the timeba se

and

careful mea

surement

of the period.

OUT

PUT

and

ed

applying the

of

or

72

2-3-4. Phase Difference Measurements

Phase difference in phase angle between signa ls can be measured using

the du altrace methodofpha
method of phase measurem

(J)

Dual-trace Method

Thi

s method works withany type of waveform. Even if the waveform s are

different from each other or the

se measurement or Lissajous diagrammatic

ent

in the X-Y mode of the oscilloscope.

pha

se difference is great, the
measurement up to 20MHz is practicable.
Measurement shall comply with the following:

1. Set the switches as described in 2-2-4

Connect one signal to the CH

I IN connector

Dual-trace

191

and another one to

Measurement.

the CH2 IN connector 110]

omin

NOTE : Where the frequency is bec

g higher, usc the same probe or
the cabl e having an equal delay time so that an measurement
error can be reduced.

2. Position the Trigger SOURCE switch 12
At this time, move

the vertical

POSmON

another

waveform upward or downward by adjusting

control so as to make the said waveform

81

toward the stable waveform.

invisible.

3. Move the waveform to the center adjusting the vertical POSITION
control,

4. Adjust the Trigger LEVEL control130J and ensure that the beginning

point
the horiz

5. Adjust the TIM E/DIV switch 122JTIM E VARIABL E control

hori zontal POSITION control 126] properly so as to make one cycl e of

the wavef
horizontal division represents 50°

and

make the waveform occupy 6 divisions.

of

the waveform corresponds exactly to the starting point of
ont

al graticule line (See Fig. 2-19).

orm

become 7.2 divsions.

When

and

this is done, each major

each subdivision represents

125]

, and the

10°.

6. Perf

7.

orm

the same procedure as that described in Item 3 above so as
to have another
displayed on center
The

horizontal distance between the beginning points on the

horizontal axis

waveform already moved to be invisible also

of

the horizontal graticule line.

of

two waveforms is the phase difference.

For

example, the phase difference shown in Fig. 2-10 is 5.2

divisions, hence 60°

73

S. If the

p

that o ne major division represen ts 5°.

9. For any ins trument equ ipped with READOUT func tion. mea

value after moving cursor as shown in the figure makes it possible

to measure the phase

(2) Lissajous Pall

Thi

Measurements can possibly be perfor
500KHz depending on wide
for you to m

pha

se difference is less than 500. the measurement can be

erforme

d closely using X

dif

em

Method

IO

magnifica tion m

ference in the entire cycle.

s method can only be used where the wavef

med

at frequencies even higher th

band

width of the amplifier. However, inorder

aintain

the m

aximum

accuracy

pro

ode

. In this case. note

surin

orm

is sine wave.

vided in features. it is

g T

desirable to conduct the measurement at the phase difference less than

20kHz.

an

7

-1

L

,

f--

--

f--lf

: /

/

1/

'

Li.

"I -

- -

,

IT

V

v-

[\

1\

\

1\ 1\

\

,

,

,

,

-r-r-

1\ '

x

,

~

,

1\

1/

I

I

1/

II

J

1/

II

}

J

Fig, 2

I

~

-19

. DUAL-TRACE METHOD OF PHASE MEASUREMENT

,1

I

,

L

,

~

ru

,

.

/

1/

.:;.:

1/

V

~

Olff

( k(

7 zoiv 360'

1/

1/

1/

t>

f(;

( I

--,

1./)

- j

V

V

I

!

I

•

I

1

PHASE DIFFERENCE(angll!() =

(

a)

PHASE

ANGLE

CALCULATION

son

- I A

B

/0

O'

(b) LlSSAJOUS-PATIERNS

Fig. 2

-20

. LISSAJOUS METHOD OF PHASE MEASUREMENT

0 \:j

.,.

-,

,

OJ'

OF

75

,,.

VARIOUS PHAS E

r

eo-

ANGL

ES

Pha

se difference measurement shall comply with the following proced

I. Rotate the TIME

position.

CAUTION:At this time, the trace on the CRT screen is so bright

2. Make sure that CH2 POS ITION [I

pushed in.

/D

IV switch fully clockwise and set it to the X-Y

tha t it could often d
trace intensity properly.

am

X] and PULL X5 MAG knob r1

age the CRT ph osphor. So reduce the

61

ure:

arc

3. Connect
signal to

4. Center the waveform by adjusting the
[18). and adjust the CH2 VOLTS/DIV switch [14J and VARIABLE control

[16) together so as to make the waveform be

waveform ex ists on the 100% and 0% graticule line).

5. Adjust the CH I VOLTS/DIV switch
waveform bec

Pr

6.

the horizontal center by

1261

7.

Count
central vertical graticule line. You may count movin g the wavef
by me

8. The ph ase difference
arc sine of A B (the

example, when the waveform is
if you perform the calculation according to Item 7 above, the
resultant is the arc sine value of 2
which is conve rted into 19.5° in terms o

one signal to the CHI, X IN con nector

the C1I2. Y IN connector [l O],

CH2

com

113].

ome

6 divisions as done in Item 4 above.

ecisely center the wavef

orm

to have it exactly positi

adju

sting the horizontal

.

the

number

ansofthe CH2 position control for close me

of divisions indicated by the wavef

of

the two signals (angle e) is equal to the

numb

er divided by 6 in Item 7 above) . For

sam

e as the described in Figure 2-20a,

+6=

0.3334.
f'theangle.

19

J,

and another

vertical POSITION c

e 6 divisions (the

and

VARIABLE to make the

oned

right on

POSmON

orm

along

asur

ement.

control

ontr

the

orm

ol

8)

=si

n

76

-'~

can

be obtained in acc

and

trigonometric function

tha

PHASEDIFFERENCE(angle

9.

The

simple method

As for angles greater than 90°, add 90° thereto. So

required to determine its value with referring to various phase
angle indicated in Fig. 2

NOT

E : The conversion of sine angle

with trigonometric function table

expression.

can

directly be applied to angles less than 90°.

-1I(b)

.

t you are

ordance

10.For an y ins trum

values after moving cursor as shown in the figure makes it possible

to ca lcula te the

ent

equipped with READOUT function mcasuriug A

pha

se difference (8).

and

B

2-3-5. Ris

Rise time is the time required for the Icadi ng edge
from 10% to 90 %
required for the trailing edge

ctim

e

Measurem

ent

of

a pulse to rise

of

the tota l pulse ampli tude. Fallti rnc is the time

of

a pulse 10 drop from 90%

of

the total

pulse amplit ude to 10%. Risctime an d falltime, which may be

sur

collectively called transition time, are mea

same

manner

.

ed essentially in the

To mcasure rise and fall time, procccd as follows :

I. C

onnec

t the pulse you wish to measure to the CH I

and

set

the

2. Adjust the

AC-DC,GND switch

TIME/DIV

switch

III

1 10 AC.

[::'::'1

to display abo ut 2 cycles of the

pulse. Make sure that the TIME VARIABL E co ntrol
fully clockwise

3. Center the pulse vertically by adjusting the CH I vertical POSITION

11

71·

4. Adju st the CHI VOLTS
be closest to the 100% graticule line,

be closest
then

rotate the VARIAB LE
making graticulc lines
both

pulse peaks rest exactly

respectively.

5.

Adj

ust the hori

rest

on

the central vertical graticule line (crosses at the 10%

poin

t) .

6. If the risetim e is sloas
magnificati
as to correspo nd al
adj

ustment as described in Item 5 above by pulling the

VARIABLE

and

pushed in.

/D

IY switch

1131

so as to make topofthe pulse

and the bott

10 the 0% line.

(See

Fig. 2

zontalPOSITIONcontrol

on

is necessary. If, however, the risetime is as short

mos

/PULL

XIO

Wher

e the

cor

respo ndence is not ma de,

contro

l [15J slightly co unterclockwise with

of

both sides deviate a little to make the

on

the 100% and 0% graticule lin es,

-2f)

.

126 J and

com

pared to the period, no further

t to the vertical graticule line, make an

MAG

control [251 (See Fig. 2·21(

IN

con

nector (9 1,

1::'51

is rotated

omofthe pul se

mak

c the ri

TIME

b)).

singedg

e

77

7. Co unt the
(central v

8.

Mul

tiply the nu mberofdivisions counted in Item 7 ab ove by the

numerical value of the

numb

er of horizontal divis ion s between the 10% p

eni

eal graticule line)

and

TIME/DIY

the 90% point.

switch, then you wiUobtai n the

measured risetime. Where the mode is XI O

of

the

TIME

/DIY

value

switch was set to Ips,
in Fi

gur

e 2-l la, the risetim e w

l

OO

ns X 3.6div = 36005 : because the m

mea

surin

9. Wh en

align

mea

with the

surem

g Ialltime, simp ly

cen

tral venical graticulc line,

ent

conform

setting by 10. Forexample,if

and

the

measurement

ould

be 360ns. ( I

make

ing

to the procedure sel

above.

magn

was con

ode

the 10%

and

oint

ification, divide the

the

TIME

/DIY

duc

ted as sho wn

OOO

ns

-=-

10 =

lOOn

is XIO magnification).

poin

t in fall time

perf

orm

the

out

in Items 7and 8

s,

10. When

measuri

transition time iscontai

cO

Ill

JX)SeJ

The above all is explained withthe followin g formula:

ng the rise and fall time. note that 17.5ns-Rise lime

ned

in the OS-30

of measure transition time (tnu and tr,

Ic = Real transition time

tm= Measured

tr - Rise lime of oscilloscope

:20Donese

tran

tr= 17.5ns:

tr = 8.8ns:

* For the instru ment equip

cursor
to measure rise/fall t

and

6 cursor to 10% and 90% re

ime

tr = 5.8

.

ped

ns:

with R

lf. Therefore the

sition time

05

-30200

05

-30·100

05-3()(,(J0

EADOUT

real

function, positioning

spe

ctively

make

(tr)=O

.35/f-

tra

nsi

tion time uc) is

s it possible

.'JH

which is

78

r:

o.

I

•

..

I

i

l"

q H

r-:

~m

n .u

.

..

.

..

10QQ

•

f-s

+-+

f-

-

•••

+

\

o . b

i

. r

~

I

a. BASIC DIS

,1

"

I

•

..

I

C 1

b. WITH H

...

"""

1

~

..

OPIZONTAL

PLA

r:

i

Y SETUP

:-...

...

.b

«

MAGN

.a

"

IFICATION

Fig.

2·21.

RISETIME MEASUREMENT

79

3. X-Y plot
All

planer connected with this instrument through RS-232C

ter

digital o

utp

ut

the dat a displayed on the screen is the ou tput

appearin

cab

g o n the X-Y

le.The

op/eration of instrument is describ ed as follows. Refer to the plotter

on

operati

operation .

3·1. X-Y plotter

manual attached to plott er for instruc tions on the X-Y planer

HP-GL

3-2. Specificati

( ]) Cha racter and

(RS-232C specification) plotter

on

cursor

All the characters and cursors displ ayed on the screen are plotted.

(2) Wavef

orm

data

All the waveform dala displa yed on the screen are plaited.

zont

hori
In magnificati

(3) Grid

al and vertical wavef

on

and

scale

Th e grid with horizontal

mode, only the magnifi ed sector is plotted.

orm

s with 10

and

vertical 10 and 8 div are plotted. In

and

8 div arc plotted.

horizontal and vertical rids , the 0.2 div nit scale is plotted.

(4) Screen mode

Setting
screen modes. Refer to chapter 3.4,

DIP

S/W on the rear side

make

s it possible to select f

SElT

ING

for more details.

(5) Pen replacement

It is possible to specify the pen replac

rear side. Refer to

(6) Ex

ampleof

Fig. 3

-1

plouin

(a) thru 3-1 (d) show the example of ploui ngs.

cha

gs

pter 3.4,

SElT

ement

ING

using

for more details.

DIP

S/W

Th

on

e

our

the

lJ

0

x

p

Ul

---

~

0

x

~

'""

0

<

f--'>

:3

UJ

~

- - - - - t

:::>

Jl

-,

I-.-.

~~

F:

,

[::

F--

bn

~

f.-"-

~

.

~

~

f-'>.

~

I

I

I

t

l

l

L

~

I

I

I

[

- - - .

~

l

J

I

I

1

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I

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---_ . . -

--

r-

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j 0 0 0

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p

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b

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C

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t>

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u

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\

m

f-J .

<

z

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Fig. 3-1 (a)PLOT OUTPUT DISPLAY 1

81

, '"Ii

! ,

l

I

If\

I

I

{

I

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I I

: I

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IOX

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d

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.

II

5 '

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Om

I

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rv

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l I I:

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Fig. 3-'(

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d)

PLOT OUTPUT DISPLAY 4

(

84

3-3. Connections

Connect X-Y plotter with the connector on the rear side usin g RS-232C
interface cable. Fig 3.2 shows tbe wiring of RS-232C int erface cable

HP

used to connect the graphic plotter

7475A with the instrument.

FG

TXD

RXD

RTS

CTS

DSR

DTR

SG

Fig.

3-4 Setting

UsingDIP SIW on the rear side, set botb the
modes.

Off

I

ON

BBBBBB

t o

20
3 0
4 0
5 0
60

20

0

7

0

3-2RS-232C

INTERFACE CABLE WIRING

- -

PLOT

I

0

2

0

3

0

4

0

5

f-O

6

0

20

0

7

0

and

communication

BB

FG

TXD

RXD

RTS

c

rs

DSR

DTR

SG

o

No. I 2 3 4 5

~

II

Co

Ex I) HP7475A plotter (9600 BAUD RA

NO

.

stale

Date format

mmunication type

1 2

0

(Oscilloscope side)

3 4

I

I

5

I I I

85

6 7 8

l ' L

Pen

TE

)

6

S~r

replacement

7

0 0

een

mode

8

Pin

NO

.

name

g

8

S2 SI Y

7

6 5 4 3 2 1

US

A3 B4

B3 B2

B1

(I)

PLOT Modc

(a)

Slate

0 0 0 0 0 1 0 I 0

(Ploner side>

Ex 2) HITACHI 681-XA PLOTTER (9600 BAUD RATE)

7 B

NO.

Slale

2 3

I

0

0

4 5

I

1

6

I)

I

I

(Oscilloscope side>

NO

State

.

I

0

2

I I 0

4

3

5

I I 0

7

6

(plotter side)

Screen mode setting
Screen size can be set using

DIP SfW No. 7 and 8.

One

selected out of the modes in table 3-1.

Table 3-1 . Screen mode se

tti

ng

0

B 9

I 0

mode

9

0

is

Screen

mode NO

1

OFF

2

3

4

DIP SfW

.7

ON

OFF

ON

Descriptions

Screen Size

NO. 8 (m

OFF

OFF

ON

One screen is plotted in a sheet

of

A4 paper

Two screens are plotted in a

sheet

of

A4 paper

Four screens are plotted

in

a

175

Refer to Fig.
3-1

(a)

118

Ref

er to Fig.

3-2

(b)

87

x70

sheetofA4 paper Refer to Fig.

3- 1 (c)

ON

Two

screens are plotted in a

87 x 70

sheet of A4 paper Refer to Fig.

3-1

(d)

m)

X 140

x95

.8

(b

) Pen replacement setting

It is possible to set the pen replaceme nt listed

DIP

S/W 6.

Table 3-2 Pen replacement settinq

In

table 3-2 using

DIP S/W

NO

OFF
ON

When

DIP S/W 6 is set to

Table shows the details

Table

GRID

AND

3-3

. Pen number correspond ing to the details of plot.

SCALE

WAVEFORM

CURSOR

Character

Pen feplacement

.6

NO

YES

OFF

. six colors arc used for plotting .

of

plot and corresponding pen

numb

Details of plot Pen

CH I 3
CH2
SAVE A 5
SAVE B 6

CHI

VOLTS

/DIY

CH2
SAVE A 5
SAVE B 6
SWEEP

TIM E RAN

GE

SAVE A 5
SAVE B 6

Others

er.

number

I

4

2

3

4

1

I

X7

(~.)

Co

mmunicau on mod e

Set baud

use.
plotter.
(a) Baud rat e setting

rate and

S~Hn

('

It is possible to set RS-232C baud rate as shown in table 3-4 using

DIP SiW

NO. 3

data

format

baud rate and data format sho uld be set in the instrument and

depe

nding

on the plotter speci fica tion and

3,4 and 5.

Table 3-4 Baud rate seni ng

siw

DIP

BAUD RATE

NO. 4 NO. 5

OFF

0;\1

OFF

ON

OFF

ON

OFF

ON

OFF

OFF

ON
ON

OFF

OFF

ON
ON

(B) Data format setting

It

is possible to set RS-232C data format as shown in table 3-5

using

DIP

SiW 2.

Table 3-5 Data format sening

DIP SiW

No. 2

OFF

START BIT

ON START BIT

OFF

300 BAUD

OFF 600 BAUD

OFF

OFF

1200 BAUD

2400 BAUD

ON 4800 BAUD
ON

9600 BAUD

ON
ON

Data Form at

+ 8BIT

+ 8BIT

ISTOP BIT

+

2STOP BIT

+

~

~

88

(0) Communication mode setting

DIP S/W 1 sets RS-232C communication type (unilateral or bilateral)

Unil

ateral communication means the plotter output and bilateral

communication mea ns the co mm unication with person al computer.

Table 3-6 Communication typeselling

DIP S

/W

No.1

OFF

ON

Note : Before tu

If

you

want

mode,

mak

setting.

Communication type

Unilateral ( plotter output)

Bilateral (communicatiof with personal

computer

rnm

g on th e in

to c

hange

strum

ent, check DIP S/W set

the DIP S/W setting forcommunication

e it sure to turn on the instrum

ent

after the

ung

.

89

3-5.

Ope

rati

on

\\'111:11

plotting.

plottin g is

3-6. RS -232C interfa ce

th e instrument is in HOLD

Red lamp lights lip while plotting is carried out.

oye

r.

lamp

goes o ut and pen is relea sed .

The instrument is

equipped

functionenables person al

mod

e. pre

ssing

[PLOT] SAV starts

When

with RS-232C as a

com

puter to control the plotting operation as

standar

d functio n. This

well as data input/output to/from computer. Th is communication function

can

not be used together with the

Do not use the X-Y plotter

out

outpu

t to the X-Y plotter.

put function(p

lotter output using PLOT

S/\V) when you use the co mputer communication function.

3-7. M ajor tr

oub

les

If X-Y plotter does not operate normall y, check the followings :
( I)

Cab

le wiring is not done in acc

ordan

ce with Fig. 3-2.

(2) X-Y plotter power turn s off.

(3 ) Commun ication type setting (DIP S/W 1) is wrong.

(4) The instrument is not in

and

data f

(5) Baud rate

ormat

HOLD

mode.

are not properly set (Set them correctly

after turning power off. Refer to paragraph 3.4 (2»

(6) Baud setting is not c

(7)

Wh

en plotting stops, turn plotter poweroff and on to initialize

plotter.

Th

en try to perf

orr

ect on the plotter side.

orm

plotting.

'i()

4. RS-232C
4-1. Int rodu cti

on

RS-232C is the serial communication interface standardized by U.S.

and

Electronic Industry Associati on ,
thr

ough RS-232C interface.

4-2. Specificati

(

I)

Electric feature

Tra

(2)

on

nsmission type

(3) Stop big length

ha

(4) C

racter len gth

(5) Parity bit

ha

(6) Separating c

Tra

(7)
(8) Co

nsmission rate

mmun

4-3. Connector

(I)

Fig. 4-1

and

pin

racter

icationprotocal

pin

alignm

and

table 4-2 shows the RS-232C connector pin alig

ent

functio ns, respectively.

transmits

EIA RS-232 is applicable

on-

synchronization

N

I bit/2 bits
8 bits
disabled

CIR

300, 600, 1200, 2400, 4800 or 9600 BAUD
Hardw

and

ire h

signal te

chn

and

ology

and

receives digital

shake

dat

a

nment

NOTE

Fig. 4-1 .

RS-232C

connector pin alignment

: Use DB-25P (FEMALE) which is used for connector cable.

() J

Table 4·1 . RS·232C Connecto r terminal

Pill No.

I FG (."'A)

2

3

4

5

TXD

RXD (BIl)

RTS (CA)
CTS

6 NC

7

SG (AB)

8 NC

9

10

I I

12
13
14
15

16

Signal

GND

(IlA)

Data

Data reception IN

Transmission request

(CIl)

Transmissio n

Non

Signal G ND

No

"
"

~

~ ~

~

~

~

~

Function

configuration

tran

smi

sxion

request

-connection

n connection

~

~

~

"

~

~

~

Signal direction

OUT

OUT

IN

17

18

19
20
21
22
23
24
25

"
"

~

~

~

~

~

~

"
"

"
"
"
"
"
"

NC Nonconnection

92

(2) RS-232C inte rface signals arc as follows:

<D

FG Ground configuration

Chassis ground cable

@TXD Data tran smi ssion

Data output signal transmission

+9V level - - - - - "0" (space)

® RXD

® RST

®crs

® SG

- 9V level

Data recepti

Datainput

Transmission request

Th is output signal indica

request state, and is used to control the data

transmission function at modem transmission

"0" (space) - carrier

" I" (mark) - carrier stop request

Transmission p

This

and

is in an

part is allowed to transmi t.
Signa l grou nd
Signal ground cable

--

- - -

on

signal reception

erm

input signal controls

ind

"I

tran

ission

ication state when modem t

" (mark)

tes

smissionreques t

modemtran

the transmission

smissionpart,

pan

ran

smission

.

4-4. Connection

C

onnec

t the i
cable. Interface varies depe nding on personal computer type.
operation manual carefully before connecting it to personal computer,
and select pr
cab

le wiring used for connecting GoldStar PrecisionCo., LId's pers

computer B-I6 with the instrument.

nstrument

oper

interface ca ble. Fig 4-2

FG

TXD

RXD

RTS

CTS

SG

Fig. 4-2. RS-

1

2

3 0
4 0
5 0

7 0

to per

sona

l comp uter using RS-232C interface

sho

0
0

232

C INTERFACE CABLEWIRING

93

So read

ws the RS-232C interfa ce

1

0

rO

0
0
0

0

1 1

2

3
4

5

7

FG

I

TXO

I

RXD

RTS

CTS

SG

onal

4-5. Operating function

If the instrument is connec ted with personal com purer through RS-232C

interface. it is possible 10 use personal computer with appropriate

programs. Function

carried

using personal computer to configure the automatic measurement system

having a variety
RS-232C

( I) Panel selling

(2) Operating function

out

by instrument,Itis possible to prepare a setofprograms

andfunc

Panel selling enables the communication with personal co
both storage or n
to storage mode to transmit accurate

<D

Wavef

orm

Th

e instrument
CHI acq uisition memory storing CH I wavef
CH2 acquisition memory storing
Two sweep trace memories (SAVE A and B)
CH I display memory
CH2 display memory
CH 1 and CH2 acquisition memories have each 2000 data l
capacity depend ing on the sample mod e. CH I and CH2 display
memories two sweep trace memories have 1000
CHI and CH2 display mem ories
transmitted using

and

function

comma

of

function s.The functions to be used by using

tion

data

nd designate the program operation to be

com

ma nds are described as follo

on

storage mode. Ford

transmissi

has

the following six d

per

sonal computer.

command

on

ata

communication, set it

data

.

ata

memories.

ormdata

CH

2 wavef

and

orm

two save memories

ws:

data.

dataload

.

mp

uter in

capacity.

can

oad

be

Table

Sample mode

OLL

R

NO

RM 2000

EQU IV 2000

4·2

Sampling mode and acquisition

Acquisition memory capacity

1000

The

numberofdata

to be transmitted each time is selected

within thc memory capacity. Decimal ASCII system or binary

system is selected as data transmission type. Waveform data

each memory is S bits. T
for decimal n

umber

hat

is to say, it is between a

and between (00) 16 and (

FF)

16 for

and

of

255

hexadecimal number. The scope of these data corresponds to ten
vertical
The data correspo n

haxadecimal number).

step lower

location one step higher

div,

on

than

25

5

(FF) " 1 DIV

128

(80) "

the CRT.

ding

to central cross h

Data

0 « 00) 16)

graticule line.

~.,..--,---.--....-

228

Data

than

graticule line.

1-+-+--1--+-

air

is 12S. «SO) 16 in

mean

s the location one

255(

~FF

)

16) means the

---,-

-..,.-,,--r--,----

-+-+--11-+-

-11-

28

o _ .1 DIV

(00)

"

® Measuremen t condition data transmission (C haracter

transmission)

It

is possible to tran smit the wavef

to SAVE

mem

ory A or B using person al computer comma nd. All the
data are transmitted except for special data.
for the measure ment

cond

ition is subject to ASCII system.

@ Waveform data recepti on

The

details in SAVE memory A an d B can be changed using

or

m da ta coming from personal computer. Set RECALL S/W to

so that the rewritten

sur

ement

condition data reception

dat

@)

wavef
ON
Mea
The meas urement condition da ta coming from personal computer
can be registered as the data for SAVE memory A
When

TIME

RECAL

/DIY

L S/W is set to ON, the dataofVOLTS

are displayed on the CRT.

orm

mea

a are displayed

(ch

95

sur

ement condition

Th

e data f

on

the CRT.

ormat

aracter reception)

or

B waveform.
/DIY

and

4-6. Transmission data format

The transmissiondata format is as follow s:

(

j)

Wavef

orm

data

tran

smis

sion

format

After receivin g Ri command (i = 1-4) the i

waveform

item.

data

in the following format. Refer to tab le 4-4 for each

• ASC II System

• Binary System

orm

(2) Wavef

• AS

• AS

data recepti on f

CII

System

CII

System

orm

at

nstrument

transmi

ts the

Comma
binary
c

ode

used for D I thru

O J Mea

After inst

measur

( , J is the separing c

system, D I th ru

DN

data. In binary system the separating character code are not

DN

data.

sur

emen t conditiondata transmissionand

rumen

t receives Ro

ement

condition data arc tra nsmitted in the following format.

Refer to table 4-5 for mo re details.

Wo

command

register them as mea

. it receives the data sen t in the f

surement

memory.

hara

are

cter code.

binary

data.

DE

L type is C/R. In

and

rernainings are AS

receptionf

command,

the memory waveform

Wh

en the in

strument

ollo

condition data forthe de

96

wing f

signat

ormat.

receives

orm

at,

ed SAVE

CII

and

Table 4 J.

Function

command

No.

Function Command Description

Transmissionl

I

reception signal

SI • Check the transmission/

command

recepti

on signal to enable

check communication with

persona

l computer.

Waveform

2

tran

data

smission command waveform datastored in

Ri • The transmission of •

memory

the

data

Whose head has address

data (mmmm).

• ASCII or binary system may

be d

esigna

method by X on the right

column.

•

After

tran

command. personal computer
receiv

es the

i is d

esigna

number

ted as

smitting

designated

ted

by

(nnn

n)

transmi

ssion

this 3

data

.

Transmission fonnat

~

IR i(mmmm.nn nn. X) DELI

denotes the memory

I

i Memory
I CHI Display

2 CH2

Display

Save

memory

4

Save

memory

.

mmmm"

: Front

Four

digit

oo»-rm!

memory
memory

A

B

address

integer

number.

o(memory

:

'17

•nnnn·: N

umberoftr

data

Fourdigit

lXXll-lOOO
CHI and CH2 display

mem

I =A:

ASCII

B: Binary

ory)

syst

em

system

ansmi

integer:

(save

mem

tted

ory.

No. Function Command Description

Mea

surem

J

dition d

tra

Chareter stored in the me

ransmission)

4 Waveform data Wi

reception

ent con Ro •

ata

nsmission me

command

command

designates

or wa

asurement

• Af

ter

comma

receives

data•

• P

mits

ins

SAVE memory A and B in

order to

data

address (mmmm),

•

ASCII

be

method by X on the

right

•

After

command.

transm

the

tran

smission

veform

comdi

mory

transmittion

nd.

the designated

ersonal

waveform

tru

ment to

writeaserie

from the front memory

or bi

designatedastransmission

column.

transmitting

its waveform.

person

compu

data

designate

nary

personal

this

al computer

ter

system may

this

tion

data

I •

transm its

to the

s of

computer

Transmission

format

~

"i"(- 1- 4) denotes the

memory

Eifmmmm. nnn

t d

i"should be J or 4

3

4 Save

•

mmmm"

enotes

i

Save

number.

the

Memory

memory

memory

:

Front

.F

our

lXXXl

n.X)

mem

ory

num

A

B

addressofmem

digit

integer:

-0999

DELI

ber.

ory

"

nnnn":

Number

data

Fourdigitinteg

0001-1000
CHI and CH2 display

mem

x=A :

AScn

B:

Binary

oftransm

(savememory.

ory)

sys

tem

system

ined

er:

No.

Mcsurcmcnt co-

5

ndition data

reception

(Character

reception)

F

unction

Com

mand

Wo

command the measurement condition

• Personal computer transmits

to the instrument. and
designates memory to save
the waveform measurement

condition data stored in "i"denotes the memory number.

the SAVE memory A and B.

Descript ion

Tran smission forma t

~

"j"should be 3 or 4

• After transmitting this

command. personal

transmits measurement

condition data.

compute

i

r

3 Save memory A

4 Save memory B

Memory

No.

2

1

Item

i@

mmmm

Table 4

Name Type

Memory

Fronr add

numbe

ress

-4.

W avef

"i"is

r

! thru 4

(Not, 2)

Decimal number.

Four digits 000

3 nnnn Data number Decimal number.

Four digits

4

Di Data • ASCII system, Decimal

number

Three digits/Idata

0001-1000

000-255

• Bina

ry

system

8 bits binary data

S DEL

Separatin

cha

racter

g C/ R

orm

1-

datatran

1000

smi

ssion f

ASCII

Data code Byte Data code Byte

ASCII

ASCII

ASCII 4

ASCII

orm

at

System

Binary System

3 ASCII 3

4

3

ASCII

ASCII 4

Binary

4

!

number

ASCII 1 ASCII 1

Note L: Sepa rating character

or

Note 2 : 3

4 is designated in receptionmode.

dataforma

t is C/ R.

100