Kenwood CS-5140 User manual

40MHzDUAL TRACE OSCILLOSCOPE
CS-5140
INSTRUCTION MANUAL
KENWOOD CORPORATION
©PRINTED IN JAPAN B50-7622-20(M)(T)
91/12111098765432190/12111098765432
KENWOOD

SAFETY
SymbolinThis Manual
AThissymbolindicateswhereapplicablecautionaryor
ZIX other imformation istobe found.
PowerSource
This equipment operates from a power source that does
not apply more than 250V rmsbetweenthesupplycon-
ductors orbetween either supply conductor and ground. A
protective ground connection bywayofthe grounding con-
ductor inthe power cord isessentialforsafe operation.
GroundingtheProduct
This equipment is grounded through the grounding conduc-
torofthe power cord.Toavoidelectricalshock, plug the
power cord into a properly wired receptacle before connec-
ting tothe equipment input or output terminals.
Use theProperPowerCord
Use only the power cord and connector specifiedfor your
product.
Use theProperFuse
To avoid fire hazard,usea fuseofthecorrecttype.
DonotOperateinExplosiveAtmospheres
To avoidexplosion,donot operate this product inanex-
plosiveatmosphere.
DonotRemoveCoverorPanel
To avoidpersonal injury, donotremovethecoverorpanel.
Refer servicingto qualified personnel.
Voltage Conversion
Ifthe power sourceisnot applied to your product, contact
your dealer.Toavoidelectricalshock,donot perform the
voltage conversion.
CONTENTS
SAFETY 2
FEATURES... 3
SPECIFICATIONS 4
PRECAUTIONS.. . 7
CONTROLS ANDINDICATORS8
FRONTPANEL8
REAR PANEL12
DIRECTIONSFORUSE..13
OPERATION14
[A]OPERATIONASA GENERAL-USE OSCILLOSCOPE..14
[ 1 ] NORMAL SWEEP DISPLAYOPERATION14
[2]SWEEPMAGNIFICATIONOPERATION16
[3]X-YOPERATION16
[4]VIDEOSIGNALOBSERVATION16
[B]EQUIVALENTSAMPLING16
[C]READOUTOPERATION17
APPLICATION18
PROBE COMPENSATION18
TRACE ROTATIONCOMPENSATION18
1. DCVOLTAGEMEASUREMENTS18
2.MEASUREMENTSOFTHEVOLTAGE
BETWEEN TWOPOINTSONA WAVEFORM19
3. ELIMINATION OFUNDESIREDSIGNAL
COMPONENTS....20
4.VOLTAGERATIOMEASUREMENT
USINGCURSORS.20
5. TIME MEASUREMENTS21
6. TIME DIFFERENCE MEASUREMENT21
7. PULSE WIDTH MEASUREMENTS.22
8. PULSE RISE TIME ANDFALLTIME~
MEASUREMENTS23
9.PHASE DIFFERENCE MEASUREMENTS24
10. TIME RATIOMEASUREMENTUSINGCURSORS.25
11. FREQUENCYMEASUREMENTS26
12.RELATIVEMEASUREMENTS.27
13.APPLICATIONOFX-YOPERATION...28
14.APPLICATIONASANEQUIVALENT-SAMPLING
OSCILLOSCOPE 29
MAINTENANCE31
RESETTING THEREADOUTCALENDERAND CLOCK
DISPLAY 32
ACCESSORIES 33
2

FEATURES
The CS-5140 isanoscilloscopeincorporating40MHz
real-timeoscilloscopefunctionsanda samplingfunction
forthebandwidthof100MHz(withautomaticsweep
rangeswitching).InformationdisplayedontheCRTin-
cludes: calendar,vertical axis input sensitivityandsweep
timeduetoreadoutfunction,timedifferenceandvoltage
differencebetweentwocursorlinesduetocursorfunction.
These featuresallowphotographingforeasiercollectionof
data.
1. Vertical axis hashighsensitivityandwidebandwidth
andespeciallycoversfullyspecifiedfrequencyresponse
at5 mV/div.
REAL TIME: 40MHz(-3dB)[1mV,2 mV:5MHz
(-3 dB)]
EQUVALENT SAMPLING: 100MHz(-3dB)[1mV,
2 mV:5MHz(-3dB)]
2. Holdoff controlpermits triggering ofsignalsofintricate
timerelations.
3. Triggercoupling (HFrej) assures triggering ofsignals
containinghigh-frequencynoise.
4. Verticalsensitivityrangeisselectable from 1 mV/divto
5 V/div with rotaryswitchcontinuously.
5. Timebasepermitshighsweepspeed.
1 nsec/div(x10MAG)(atsampling)
6. 150mmrectangular,domed-mesh,typeCRT with in-
ternalgraticuleandafteracceleration(accelerating
voltage12kV)ensureseasy-to-see,parallax-free
waveformobservations.
7. Forconvenienceinmakingrisetimemeasurements,the
0%, 10%,90%and100%levelsaremarkedonthe
graticule scale oftheCRT.
8. Trace rotation iselectricallyadjustable from the front
panel.
9. By SCALE ILLUMcontrol,thewaveformis easy
observed inthedarkandthephotographofthe
waveformis easy provided.
10. SelectableAUTO FREE RUNfunctionprovidessweep
without trigger input signal.
11. The FRAME-LINE switchprovidesselectionof sync
pulse forsweep triggering from smallamplitudeto
largeamplitude without adjustingwhenviewingcom-
positevideowaveforms.
12. X-Yoperationiseasilyprovidedbyone-touche button
operation.
CH1 Y axis,
CH2 X axis
13. Therealmodeorsamplingmodeisautomatically
selected accordingtothesweeprange,eliminating
troublesomeoperation.
14 Thereadoutfunctiondisplayseach scale factoronthe
CRT, eliminatingtroublesomeconfirmationofthe
rangeforwaveformobservation.
WhentheprovidedprobePC31is used, thevertical
sensitivitydisplayontheCRTwillbemagnifiedby10
times.
15 Thecursormeasurementmodedisplays,inletters,
voltagedifference,voltageratio,timedifference,time
ratio,frequency,andphasedifferencecorresponding
tothecursormovement. This displayeliminates
calculationhavingbeenmadebyanoperator,resulting
inaccuratewaveformobservation.
3

SPECIFICATIONS
CRT
150 mmrectangular with internalgraticule
AccelerationVoltage
12 kV
Display Area
8x10 div(1div= 10mm)
VERTICAL AXIS (CH1andCH2)
Sensitivity
1 mV/divto5 V/div,±3%
Attenuator
12 steps,1 mV/divto5 V/divin 1 -2-5sequence.
Vernier control for fully adjustablesensitivitybetweensteps.
Input Impedance
1 MO±2%approx.24pF
Frequency
Response
DC
REAL TIME: DCto40MHz,-3dB(5mVto5 V/div)
DC to5 MHz,-3dB(1mV,2 mV/div)
EQUIVALENT SAMPLING: DCto100MHz,-3dB(5mVto5 V/div)
DC to5 MHz,-3dB(1mV,2 mV/div)
Frequency
Response
AC
REAL TIME: 5 Hzto40MHz,-3dB(5mVto5 V/div)
5 Hzto5 MHz,-3dB(1mV,2 mV/div)
EQUIVALENT SAMPLING: 5 Hzto100MHz,-3dB(5mVto5 V/div)
5 Hzto5 MHz,-3dB(1mV,2 mV/div)
Rise Time
REAL TIME: 8.8 nsec or less (40MHz,-3dB)
70 nsec or less (5MHz,-3dB)
EQUAL SAMPLING: 3.5 nsec (100MHz,-3dB)
70 nsec (5MHz,-3dB)
Crosstalk
— 40dBminimum
OperatingModes
CH1
singletrace
OperatingModes
CH2
singletrace
OperatingModes
ALT
Two-waveformsdisplayalternting
OperatingModes
CHOP
do
OperatingModes
ADD
CH1 + CH2addeddisplay
ChopFrequency Approx.250kHz
fi\ Maximum Input voltage
500 Vp-por250V (DC+ ACpeak)
HORIZONTALAXIS
Input thru CH2,x 10MAGnotincluded
OperatingModes
With TRIG MODEswitch,X-Yoperationisselectable (REAL TIME)
CH1 ; Y axis
CH2 ; X axis
Sensitivity
Same asvertical axis (CH2)
Input Impedance
Same asvertical axis (CH2)
Frequency
Response
DC DC
to500kHz,-3dB
Frequency
Response
AC
5 Hzto500kHz,-3dB
X-Y Phase Difference 3°or
less at50kHz
/t\Maximum Input Voltage
Same asvertical axis (CH2)
SWEEP
Sweep
System
NORM Triggeringsweep Sweep
System
AUTO
Sweep freerunsinabsenceof trigger
Sweep Time 0.2s/divto10ns/div,±3%,in23ranges,in1-2-5sequence.
Vernier control provides fully adjustablesweep time betweensteps.
REAL TIME: 0.2s-0.2/xs/div
EQUIVALENT SAMPLING: 0.1/i~10ns/div
4

Sweep Magnification
x 10(tentimes)±5%
Linearity
±3% (x10MAG,0.2/iS~10jis,±5%)
HOLD OFF Adjustablebythecontroller
TRIGGERING
Internal Sync
CH1
TriggeredbyCH1signal
CH2
TriggeredbyCH2signal
LINE
Triggeredbylinefrequency
External Sync
EXT
TriggeredbysignalappliedtoEXT TRIG INPUT jack
External Sync InputImpedance Approx.1 MG,approx.32pF
ft\ Max. ExternalTriggerVoltage
50 V (DC+ ACpeak)
Coupling
AC, HFrej, TV FRAME, TV LINE
Sync sensitivity AtNORMposition
AC
Sync frequencyrange: 10Hz- 50MHz
INT : 1 div,EXT: 0.1Vp-p
Sync frequencyrage: 10Hz~ 100MHz
INT : 1.5div,EXT: 0.2Vp-p
HFrej
The sync frequencyrangeismorethan10kHz,andtheminumumamplitude
(Voltage) requiredfor sync isincreased.
TV
FRAME, LINE
INT : 1.5div,EXT: 0.15Vp-p
(AUTO)
Rating shownaboveisprovidedat50Hzorover.
CALIBRATION VOLTAGE
1 V ±3%,squarewave,positivepolarity,approx.1 kHz
INTENSITY MODULATION
Sensitivity
+ 5 V,positivevoltagedecreasesbrightness.
InputImpedance Approx.10kO
Usable FrequencyRange
DC to2 MHz
A MaximumInputVoltage
50 V (DC+ ACpeak)
READOUT
Calendar
Year/Month/Day/O'clock/Minute
Clock accuracy: ±2 min./month
Battery life: About20,000hours(atroomtemperature)
Set value
CH1/CH2 scale factor(withprobedetection); V-UNCAL, ADD, INVERT
Sweep scale fator(magnificationconversion); SWEEP VARIABLE-UNCAL, X-Y
Cursor mode:
4V1:
Voltagedifferencebetween AREF andA cursorsonthe basis ofCH1 scale factor
AV2: Voltagedifferencebetween
AREF andA cursorsonthe basis ofCH2 scale factor
AT:
Time differencebetween AREF andA cursorsonthe basis ofsweep scale factor
MAI:
Frequency between AREF andA cursorsonthe basis ofsweep scale factor
Ratio: Voltageratioandtimeratiobetween AREF andA cursors,supposing
5 div.onthe CRT as100%
Phase: Phase differencebetween AREF andA cursors,supposing5 div.onthe
CRT as360°
NOTE: TheX-YmodeallowsAS/I measurementonly.
Cursor
Resolution
10 bits
measurement Measurement
accuracy
±4%
Measurable range AV, Ratio:±3.6divormore
from theCRTcenter
AT, VAT, Ratio, Phase: ±4.6divormore from theCRTcenter
5

TRACE ROTATION(Electrical,adjustable from front panel)
POWER REQUIREMENT
Line Voltage
100 V/120V/220V/240VAC+10%
Line Frequency
50/60 Hz
Power Consumption Approx.53W
DIMENSIONS (WxHxD)
319 (341)x132(145)x380(442)mm
( ) dimensionsincludeprotrusion from basic outline dimensions
WEIGHT Approx.9.5kg
ENVIRONMENTAL
Within Specifications 10°Cto35°C,85%max.relative
humidity
Full Operation 0°Cto40°C,85%max.relative
humidity
ACCESSORIES SUPPLIED
Probe
PC-31 (READOUT compatibleprobe)x 2
Attenuation...1/10
Input impedance...10MQ+ 1%, 14pF+10%
Power supplycable
1
Replacement Fuse
1.2AX2, 0.8AX2
InstructionManual
1
*Circuitandratingaresubjecttochange without noticeduetodevelopmentsintechnology.
6

PRECAUTIONS
Plug configuration
Power cordandplugtype
Factory installed
instrumentfuse
Line cordplugfuse
North American
120volt/60Hz
Rated 15amp
(12ampmax;NEC)
1.2A,250V
Fast blow
6 x 30mm None
Universal Europe
220volt/50Hz
Rated 16amp
0.8A,250V
T. lag
5x20mm None
U.K.
240volt/50Hz
Rated 13amp
0.8A,250V
Fast blow
6x30mm
0.8A
Type C
Australian
240volt/50Hz
Rated 10amp
0.8A,250V
Fast blow
6 x 30mm None
North American
240volt/60Hz
Rated 1 5 amp
(12ampmax;NEC)
0.8A,250V
Fast blow
6 x 30mm None
Switzerland
240volt/50Hz
Rated 10amp
0.8A,250V
Fast blow
6x 30mm None
Fig. 1 PowerInputVoltageConfiguration
1. Check thepowersupplyvoltagebeforeuse.A voltage
selector/fuse holderisprovidedonthe left sideoftheAC
inletsocket,ontherearpaneloftheset.Thelinevol-
tagesettingisindicatedbya trianglemarkabovethefuse
holder.Ifthevoltageisdifferent from thepowersupply
inyour area, setitcorrectlytopreventdangerand mal-
functions. Besuretocheckthevoltagebeforeconnect-
ingthepowerplugtoanAC outlet.
• Whenconvertingthevoltage,refertotheMaintenance
section.
2. The CS-5140 shouldbeinstalledata placemeetingthe
following conditions:
1 Directsunlight
2 Hightemperatureandhumidity.
3 Frequetmechanicalvibration.
4 Strongmagnetic rays orimpulsevoltagepossibly
generated from equipmentlocatednearby.
3. Neverapplymorethanthemaximumratedvoltagetothe
oscilloscope input jacks.
A CH1,CH2 input jacks:
500 Vp-por250V (DC + AC peak)
EXT TRIG, Z AXIS input jacks:
50 V (DC + AC peak)
Never applyexternalvoltagetotheoscilloscope output
terminals.
4. Donot increase theintensitymorethanrequired.
5. Neverallowa smallspotofhighbrilliancetoremainon
the screen forextendedperiodsoftime.
6. Nevercovertheventilatingholesinthetopofthe
scope, asthiswill increase thetemperatureinsidethe
case therebycausingmalfunction.
7. Whenremovingthe case, observethemaintenancein-
structioncontainedinthismanualtopreventa safety
hazard because thisinstrumentcontainshighvoltage
circuits.
8. Toprotectagainstsafety hazards always groundthe
instrumentusingtheGNDterminalsonthepanel.
9. When turning onandoffthe POWER switchrepeated-
ly, keepanintervalofabout5 seconds. Faster onand
offoperationmay cause malfunctiontotheinstru-
ment.
10. DonotusetheprovidedPC-31Probe with other
measuring equipment because itincorporatesa ter-
minalfor READOUT detectionwhich might damage
theotherequipment.
11. Forproperuseofthecalendarandclockdisplay,be
sure toadjustthedateandtimecorrectly. (Refer tothe
"Maintenance andAdjustment"section.)
12. Thecalendarandclockdisplayarebackedupbyanin-
corporatedbattery.Ifthebatteryisnearlyexhausted,
thedateandtimewillbedelayed.Ifthishappens,the
incorporatedbatterymustbereplaced with a newone.
Please contactyourdealerorKenwood service agent
for assistance.
7

CONTROLS ANDINDICATORS
FRONT PANEL
©CH1$ POSITION
Rotationadjustsvertical position ofCH1waveformon
thescreen.InX-Yoperation,this control adjustsY axis
position.
(DcmVOLTS/DIV
Verticalattenuatorforchannel1.Providesstepadjust-
mentofverticalsensitivityin1-2-5sequence. VARI-
ABLE (3) control isturnedtotheCALposition,the
calibratedverticalsensitivityisobtained.InX-Yopera-
tion,this control serves astheattenuatorforY axis.
(DCH1VARIABLEControl
Rotationprovidesfine control ofchannel1 vertical
sensitivity.Inthe fully clockwise(CAL)position,the
verticalattenuatoriscalibrated.InX-Yoperation,this
control serves astheY axis attenuationfineadjust-
ment.
(4) CH1AC-GND-DC
This switchistheCH1vertical axis couplingmode
selector,forX-Yoperation,the Y-axis couplingmode
control.
AC: AC input coupling with blockingofanyDC
signalcomponent.
GND: Verticalamplifierisdisconnected from thein-
putsignalandconnectedtoground.Thismode
is usefulindeterminingthezeroreference.
DC: DCcoupling, with both theDCandACcom-
ponentsofthe input signaldisplayedonthe
CRT.
(DCH1INPUT Jack
Vertical input forchannel1 traceinnormalsweep
operation.Vertical input forX-Yoperation.
(6) CH2VOLTS/DIV
VerticalattenuatorforCH2.Providesthesamefunc-
tion as VOLTS/DIV Control(2)for CH1. InX-Yopera-
tion,the control serves asthe X-axis attenuator.
(J) CH2VARIABLEControl
Rotationprovidesfine control ofchannel2 vertical
sensitivity.
Provides thesame function as VARIABLE Control(§)
for CH1.
InX-Yoperation,this control serves for X-axis at-
tenuationfineadjustment.
(8) CH1AC-GND-DC
Selects thecouplingofchannel2 vertical input signal.
InX-Yoperation,theswitchprovides input selectionof
X-axis andperformsthesame function asAC-GND-DC
©forCH1.
(9) CH1INPUT Jack
Vertical input forchannel2 traceinnormalsweep
operation.Externalhorizontal input inX-Yoperation.
(fj)) CH2$ CH2POSITION, PULL INV
T CH2 POSITION: Rotationadjustsvertical position of
channel2 trace.
INV:Push-pullswitchselectschannel2
signalinverted (PULL INV)when
pulledout.
(Hereafter PULL INVisdescribedas
CH2 INV.)
8
Fig. 2

(Q) MODE
Selects thebasicoperatingmodesoftheoscilloscope.
CH1: Onlythe input signaltochannel1 is
displayedasa singletrace.
CH2: Onlythe input signaltochannel2 is
displayedasa singletrace.
ALT: Alternatesweepisselectedregardless
ofsweeptime.
CHOP: Chopsweepisselectedregardlessof
sweep time atapproximately250kHz.
ADD: Thewaveforms from channel1 and
channel2 inputsareaddedandthesum
is displayedasa singletrace.Whenthe
CH2 INV@ button isengaged,the
waveform from channel2 issubtracted
from thechannel1 waveformandthe
differenceisdisplayedasa singletrace.
@ POWER
Power switch.A pressofthisswitchturnsthepower
ON.
(JDPOWERLED
Lightswhenoscilloscopeisturnedon.
(g)_QGNDterminal/bindingpost.
Earth and chassis ground.
(15)CAL
Provides approximately1 kHz,1 V peak-to-peak
square wavesignal.Thisisusefulforprobecompensa-
tion adjustment.
@ INTENSITY (REAL)
Adjuststheintensityoftrace.
@ READOUTINTENSITY
Adjuststheintensityofthecharactersinthe READ
OUT lineandthecursor.Fullcounterclockwiserota-
tion turnsoffthe READOUT function.
FOCUS/PULL ASTIG
FOCUS: Adjuststhetracefor optimum focus.
ASTIG: Usedto bring thewaveform into thebest
condition with the FOCUS adjustmentby
adjustingtraceandspotaberration.Pullthe
knobtomakea spotcircular.
(§) SCALE ILLUM/PULL TRACE ROTA
SCALE ILLUM: Brightnessadjustmentofthe scale
oftheCRT.Forphotographing,
rotate theknobtoadjustbrightness
topreventhalationcausedbytoo
bright illumination.
TRACE ROTA: Usea screwdrivertoadjustthe
tracetoa horizontalposition.Once
adjusted,this control doesnotre-
quirefrequentreadjustment.
(§)EXTTRIGINPUT Jack
Input terminalforexternal trigger signal.
When SOURCE switchisselectedinEXTposition,the
input signalattheEXT TRIG INPUTjackbecomesthe
trigger.
@ LEVEL/PULL SLOPE {-)
LEVEL: Triggerleveladjustmentdeter-
mines point onwaveformwhere
sweep starts.
When COUPLING switchis
selected in VIDEO-FRAME or LINE,
the trigger leveladjustmenthasno
effect.
PULL SLOPE (-): Two-positionpush-pullswitch.
Switch Pulledout position selectsnegative
going (—)slopeandpushedinposi-
tion selectspositive-going(+)
slopeas triggering point.
(§)COUPLING
Selects couplingforACsync trigger signal.
AC: Triggerisaccoupled.BlocksDCcomponent
of input signal;mostcommonlyusedposi-
tion.
HFrej: Sync signaliscoupled through a low-pass
filter toeliminate high frequencycomponents
forstable triggering oflowfrequencysignals.
TV : Verticalsyncpulsesofa compositevideo
FRAME signalareselectedfortriggering.
TV : Horizontalsyncpulsesofa compositevideo
LINE signalareselectedfortriggering.
(§) SOURCE
CH1: Channel1 signalisusedasa trigger source.
CH2: Channel2 signalisusedasa trigger source.
LINE: Sweepis triggered bylinevoltage
(50/60 Hz).
NOTE:
Whenthe COUPLING switchissettoother
thanACsynchronizationmaynotbeobtain-
ed.
Inthis case, setthe COUPLING switchtothe
AC position.
EXT: Sweepis triggered bysignalappliedtoEXT
TRIG INPUTjack(§).
(g)TRIGGERINGMODE(TRIGMODE)
Selects triggering mode.
AUTO: Triggeredsweepoperationwhen trigger
signalispresent,automaticallygenerates
sweep (freeruns)inabsenceof trigger signal.
NORM: Normal triggered sweepoperation.Notraceis
presentedwhena proper trigger signalisnot
applied.
X-Y: X-Yoperation.Channel1 input signalpro-
duces verticaldeflection(Y axis). Channel2
input signalproduceshorizontaldeflection(X
axis).
This operatesregardlessverticalMODE selec-
tion.
9

(§) SWEEP VARIABLE Control
This isthesweepratefine-adjustmentcontrol,which
allows continuousvariationbetween SWEEP
TIME/DIV ranges.
The sweepratecanbecalibratedwhenthecontrolis
turnedfullyclockwisetotheCALposition.
(§) SWEEP TIME/DIV
Horizontalcoarsesweeptimeselector.
Selects calibratedsweeptimesof0.2^.s/divto
10 ns/divin23stepswhensweeptime VARIABLE
control@)issettoCALposition(fullyclockwise).
Measurementintherangebetween0.1/ts/divand
10 ns/divisautomaticallyperformedintheequivalent
samplingmode,allowingobservationsofrepetitive
waveforms. Atthesametime,thebandwidthisex-
tendedto100MHzprovidedthatthevertical axis at-
tenuatorisintherangebetween5 mV/divand
5 V/div.
@ POSITION/PULLx 10MAG
Horizontalpositioncontroller,whichprovideshorizon-
talshiftofwaveform.By pulling theknob,thesweep
timeisquickenedtentimes.
IntheX-Yoperationmode.ItfunctionsasanX posi-
tion controller.AlsofunctionsasanX positioncon-
trollerofthestoragewaveform.
NOTE: InX-Yoperation,keepthisknobpressed
(normalsweepmode).
(§)HOLDOFF
Adjusts thesweep-to-sweepinterval.Turningthe
HOLDOFF from theNORM(fullc.c.w.)positionvaries
the holdoff timetomorethanx 10attheMAX(full
c.w.) position.
(§) A
Controllerforshiftingthemeasuringcursor(rough dot-
tedline)outoftwocursorlinesdisplayedonthe CRT in
thecursormeasurement.By rotating thecontroller
clockwise, thecursorlinemovesupwardorrightward:
by rotating counterclockwise,itmovesdownwardor
leftward.
(§) A REF
Controllerforshiftingthereferencecursor(small-
dotted line)outoftwocursorlinesdisplayedonthe
CRT inthecursormeasurement.By rotating thecon-
trollerclockwise,thecursorlinemovesupwardor
rightward:by rotating counterclockwise,itmoves
downwardorleftward.
(§) CURSORS
Cursor measurementmodeselectswitch.
OFF: Cursormeasurementisnotperformed.Thecur-
sor, andcursourmeasurementmodeandcur-
sor measurementvaluearenotdisplayedon
the CRT.
AMI: Twohorizontalcursorlinesaredisplayedonthe
CRT, andvoltagedifferenceandvoltageratio
betweenthemaredisplayedintheupper right
ontheCRTposteriortothecursormeasure-
mentmodedisplay.
SettingtheCH1 VARIABLE controller(§)to
theCALposition causes voltagedifference
measurement, anda valuecalculatedinaccor-
dance with settingoftheCH1 VOLTS/DIV dial
(2) isdisplayedposteriorto<4V1.
SettingtheCH1 VARIABLE controller(§)tothe
UNCAL position causes voltageratiomeasure-
ment,anda valuecalculatedassumingthat5 div.
is 100%isdisplayedposteriortothe RATIO.
WhentheA cursorisbelowtheA REF
cursor, a negativevalueisdisplayed.
NOTE: SettingoftheMODEselectswitch(Q)to
theCH2position causes A V2mode
cursor measurement.
10
Fig. 3

AV2: Twohorizontalcursorlinesaredisplayedonthe
CRT, andvoltagedifferenceandvoltageratio
betweenthemaredisplayedintheupper right
ontheCRTposteriortothecursormeasure-
mentmodedisplay.
SettingtheCH2 VARIABLE controller(7)to
theCALposition causes voltagedifference
measurement, anda valuecalculatedinaccor-
dance with settingoftheCH1 VOLTS/DIV dial
(Disdisplayedposteriorto^1V2.
SettingtheCH2 VARIABLE controller(f) to
theUNCALposition causes voltageratio
measurement, anda valuecalculatedonthe
basis of5 div.as100%isdisplayedposterior
tothe RATIO.
WhentheA cursorisbelowthe ^IREF
cursor, a minusvalueisdisplayed.
NOTE: SettingoftheMODEselectswitch(Tj)
totheCH1position causes AVI
modecursormeasurement.
SettingoftheMODEselectswitch%
totheX-YpositiondisablesAV2
modemeasurement.
AT: Twoverticalcursorlinesaredisplayedonthe
CRT, andtimedifferenceandtimeratiobet-
ween themaredisplayedintheupper right on
theCRTposteriortothecursormeasurement
modedisplay.
Settingthe SWEEP VARIABLE controller(§)to
theCALposition causes timedifference
measurement, anda valuecalculatedinaccor-
dance with settingofthe SWEEP TIME/DIV dial
@) isdisplayedposteriortoAT.
Settingthe SWEEP VARIABLE controller@ to
theUNCALposition causes timeratiomeasure-
ment,anda valuecalculatedassumingthat
5 div.is100%isdisplayedposteriortothe
RATIO.
WhentheA cursorisonthe left oftheA
REF cursor,a minusvalueisdisplayed.
NOTE: SettingoftheMODEselectswitch@)
totheX-YpositiondisablesAT
modemeasurement.
1/AT: Twoverticalcursorlinesaredisplayedonthe
CRT, andfrequencyandphasedifferencebet-
ween themaredisplayedintheupper right on
theCRTposteriortothecursormeasurement
modedisplay.
Settingthe SWEEP VARIABLE controller(§)to
theCALposition causes frequencymeasure-
ment,anda valuecalculatedinaccordance
with settingofthe SWEEP TIME/DIV dial@ is
displayedposteriortoMAT.
Settingthe SWEEP VARIABLE controller(§)to
theUNCALposition causes phasedifference
measurement, anda valuecalculatedassuming
that5 div.is360°isdisplayedposteriortothe
PHASE.
WhentheA cursorisonthe left oftheA
REF cursor,a minusvalueisdisplayed.However,
frequencyisdisplayedinanabsolutevalue.
NOTE: SettingoftheMODEselectswitchto
theX-YpositiondisablesMAT mode
measurement.
11

REAR PANEL
(§)Z AXISINPUT
External intensitymodulation input; TTLcompatible.
Positive voltage increases brightness,negativevoltage
decreases brightness.
(§) Fuse Holder, Line VoltageSelector
Contains theline fuse. Verifythattheproperfuseisin-
stalled whenreplacingtheline fuse.
100 V,120V .............................................1.2A
220 V,240V 0.8A
After pulling thepowercordplug from thepower
outlet, adjustthisselectortoyourlinevoltage.
(fl)PowerInputConnector
Inputterminalsofpowersupply.ConnecttheACcord
provided.
12
Fig. 4

DIRECTIONS FORUSE
READOUT DISPLAY
CD POSITIONS OFTHE DISPLAY
Displays thecalendar, scale factors,cursor
measurementdata,etc.atthe following
positionsontheCRT.
Fig. 5
12) DISPLAYCONTENTS
1 Calendar/Clock
Displays a calendarandclockinthe following order:
Month-Day-Year-O'clock-Minute
Month: JAN, FEB, MAR,APR,MAY,JUN,JUL,
AUG, SEP, OCT,NOV,DEC
Day: 01to31
Year: 00to99
O'clock:00to23
Minute:00to59
These settingcanbechanged with theswitchlocated
onthe bottom. (Forresetting,refertotheMaintenance
section.)
2 Cursor Mode
The currentsettingcursormode,whichdependsonthe
combinationoftheoperationcontrols,isdisplayed.
AV2, AT, MAT, RATIO, PHASE
3 CursorMeasuringData
The resultmeasuredbythetwocursorsisdisplayed.In
the1MTmode,whenthetwocursorsapproach
each otherandthemeasurementnearsits limit, a "?"
will bedisplayedin front ofthemeasureddata.This
shows that themeasureddataisnotavailable.
4CH1 Scale Factor
Displays theCH1vertical axis sensitivitytoonedivi-
sion. WhennotinCALmode,a ">"isdisplayedafter
CH1.
NOTE: ThisisnotdisplayedwhentheMODE control
(Q)issettoCH2.
5 CH2 Scale Factor
Displays theCH2vertical axis sensitivitytoonedivi-
sion. WhennotinCALmode,a ">"isdisplayedafter
CH2.
NOTE: ThisisnotdisplayedwhentheMODE control
©issetto CH1.
6ADD
"+ " isdisplayedwhentheMODE control (Jj)issetto
ADD.
7CH2INVERT
The inverted polarity ofCH2 "J" isdisplayedbycon-
trolling the• POSITION/PULL INV(jjj).
8Sweep Scale Factor
Displays thesweeprangesetbythe SWEEP TIME/DIV.
Whenthe SWEEP VARIABLE isnotinCALmode,a ">"
is displayed.When TRIGGERING MODEissettoX-Y,
thisdisplayischangedto "X-Y".
13

OPERATION
INITIALSTARTING PROCED
Priorto turning thepowerON,settheswitchesasinthe
drawingbelowinadvance.Fordetailsofswitchsetting,
refertothe item "Front Panel". Inthe case ofusinga pro-
be, refertotheOperationManualattachedtotheprobeas
wellastheapplicationexample"ProbeCompensation".
Fig. 6
[A]OPERATIONASA GENERAL-USE OSCILLO-
SCOPE
[1]Normalsweepdisplayoperation
1. Press the POWER switch@ tosupplypower,andthe
POWER LED@>lights.
2. A bright lineappearsintheCRTcenter.Ifitisnotinthe
center,adjustits position tothecenter with the• POSI-
TION controller(T). Then, adjustthebrightness with
the INTENSITY controller(fj), andthefocus, with the
FOCUS controller(f|)asrequiredfor easy observation.
3. Supply input signal into theCH1 INPUT jack®.Rotate
the VOLTS/DIV dial(2)toadjustwaveformtoap-
propriatedimensions.
Set theMODEselectswitch(Q)toCH2,andthe TRIG-
GERING SOURCE selectswitch(§)toCH2. Then, sup-
ply input signal into theCH2 INPUT connector(9).Its
waveformisdisplayedontheCRTinthesamepro-
cedures with channel1.
WhentheMODEselectswitchissettoADD,thecom-
positewaveformsofCH1andCH2(thealgebraicsum-
ofCH1+ CH2)isdisplayedonthe CRT. Inthisstatus,if
CH2 INVisengagedby pulling outtheCH2T POSI-
TION, thealgebraicdifferencebetweenCH1andCH2
(CH1 -CH2) will bedisplayed.
The sensitivityoftheADDedwaveformbecomesthe
same asthevalueindicatedby VOLTS/DIV provided
that tnesame VOLTS/DIV valuehasbeensetforthe
waveformsofthetwochannels.
WhentheMODEselectswitch(fj)issettoALT,the
channel-1andchannel-2waveformsaredisplayedalter-
natelyineverysweep.Inthis case, the SOURCE select
switch@)shouldbesettothechanneltobe syn-
chronized.
4. Thedisplayonthescreen will probablybeunsynchroniz-
ed. Refer to TRIGGERING procedurebelowforadjusting
synchronizationandsweepspeedto obtain a stable
displayshowingthedesirednumberofwaveform.
TRIGGERING
The input signalmustbeproperly triggered forstable
waveformobservation. TRIGGERING ispossiblethein-
putsignalINTernallytocreatea trigger or with anEX-
Ternally providedsignalof timing relationshiptothe
observedsignal,appliyingsucha signaltotheEXT.
TRIG INPUT jack@>.
(1) Theselectionofa signal that serves asthe trigger
signalismadeusingthe SOURCE switch@).
*Internal Sync
Whenthe SOURCE selectionisinINT(CH1,CH2,
LINE), the input signalisconnectedtotheinternal
trigger circuit.Inthisposition,a partofthe input
signalfedtothe INPUT (5)or(9)jackisapplied
from theverticalamplifiertothe trigger circuitto
cause the trigger signal triggered with the input
signaltodrivethesweep.
With the SOURCE selectorsettoCH1orCH2,a
trigger isdeveloppedbytheCH1orCH2signal
regardless oftheMODEsetting.
Settingthe SOURCE selectswitch@)to LINE
causes synchronization with commercialpowerfre-
quency.
14
Rotatecounterclockwise
uptotheveryend•
Threeo'clockposition
Center Push'
Rotatecounterclockwise
uptotheveryend
• Center Push
•Center Push

• External Sync
Whenthe SOURCE selectionisinEXT,the input signalat
theEXT. TRIG INPUT(§)jackbecomesthe trigger. This
signalmusthavea time orfrequencyrelationshiptothe
signalbeingobservedtosynchronizethedisplay.External
sync ispreferedforwaveformobservationinmanyapplica-
tions.Forexample,Fig.7 shows that thesweepcircuitis
drivenbythegatesignalwhenthegatesignalintheburst
signalisappliedtothe EXT.TRIG INPUTjack.
Shows the input/output signals,wheretheburstsignal
generated from thesignalisappliedtotheinstrumentunder
test. Thus, accurate triggering canbeachieved without
regardtothe input signalfedtotheINPUT(5)or(§)jack
so that nofurther triggering isrequiredevenwhenthe input
signalisvaried.
EXT. TRIG
Triggersignal
(Gatesignal)
Fig. 7
Waveform with highfrequencynoise
TriggersignalbyHFrejection
Fig. 8
•TriggeringLevel
Trigger point onwaveformisadjustedbythe
LEVEL/PULLSLOPE (fj)control.Showstherela-
tionshipbetweenthe SLOPE and LEVEL ofthetrig-
ger point. Triggeringlevelcanbeadjustedas
necessary.
SLOPE "-"RANGE
Fig. 9
(2) Afterthe SOURCE hasbeenset,the trigger point
can besetby rotating LEVEL/SLOPE control @ .
(3) Selectthecouplingswitch@ .
AC:
The trigger signaliscapacitivelycoupled,soitsDC
componentiscut,givinga stable trigger whichis
notaffectedbytheDCcomponent. With thisad-
vantage,this position ofthecouplingswitchiscon-
venientlyselectedforordinaryapplications.
However,ifthe trigger signalislowerthan10Hz,
the trigger signallevelbecomesattenuated,
resultingin difficulty intriggering.
HFRE J:
The trigger signalissupplied through a low-pass
filter toeliminatethehigh-frequencycomponent
(higherthan10kHz),givinga stable triggering with
low-frequencycomponent.Whenhigh-frequency
noiseissuperimposedoverthe trigger signalas
showninFig.8,thehigh-frequencynoiseiscutto
providea stable trigger.
•AutoTrigger
Whenthe TRIG MODE@)selectionisin AUTO, the
sweep circuitbecomesfree-runningas long asthere
is no trigger signal, permitting a checkofGNDlevel.
Whena trigger signalispresent,the trigger point
can bedeterminedbythe LEVEL control forobser-
vationasinthenormal trigger signal.Whenthetrig-
gerlevelexceedsthe limit, the trigger circuit
becomesfree-runningwherethewaveformstarts
running.
NOTE: If, with the TRIG MODEswitchsetto
NORM, no trigger signalis input orthetrig-
gersignalexceedsthe triggering range,
sweepingisstoppedandtrace will notbe
displayed.
•HOLDOFF
In case of triggering difficulties that mayoccur with
signals containingdifferentpulsedurations
althoughthepulse repetition itselfisconstantas
shownbelow,or with complicatedsignalssuchasa
TV signal, turn theHOLDOFF control (g)toob-
taina stabletriggering.
15
Inputsignalto
amplifier,etc.
Outputsignal from
amplifier,etc.
SLOPE " + " RANGE
LEVEL

5. Adjustthe SWEEP TIME/DIV control (§)to obtain an
appropriatedisplay.Nowa normalsweepdisplayisob-
tained.
[B] EQUIVALENTSAMPLING
The equivalentsamplingmodeisactivatedautomatically
whenthe SWEEP TIME/DIV control 'f|issettotherange
between0.1/xs/divand10/*s/div.Whenthemodeis
swtiched from thereal-timemodetoequivalentsampling
mode,thebandwidthisalsoswitched from 40MHz
(-3dB)to100MHz(-3dB)so that thedisplay
amplitudemayvary with higher input signalfrequencies.
Whenitisrequiredtoobserveamplitudevariations,fixthe
modeeithertothereal-timeorequivalentsamplingmode.
With a samplingoscilloscope,differentpartsofthe input
signalaresampled with certain time differences,andthe
signals obtrainedareamplifiedandappliedtothevertical
amplifier.Atthesametime,the time signalscorresponding
tothesampling time differenceareappliedtothehorizontal
amplifier,so that thesameimageasthe input signalisre-
constructedonthedisplayusingthetwotypesofsignals.
This systemthereforenecessitates that the input signalisa
repetitivewaveform,andtherepetitionsshallcontinuefor
a certainperiodandshallbestable.
[2] SWEEP magnificationoperation
Merelyshorteningthesweep time tomagnifya portion of
observedwaveformcanresultinthedesired portion disap-
pearingoffthe screen, thedesired portion canbedisplayed
without such trouble ifthesweepmagnificationfeatureis
used (alsoreferto "Sweep Magnification"onpage5).
Usingthe< • POSITION control,adjustthedesired por-
tion ofwaveformtothe CRT. Pulloutthe PULLx 10MAG
control tomagnifythedisplay10times.Forthistypeof
displaythesweep time isthe SWEEP TIME/DIV setting
dividedby10.
[3]X-Yoperation
X-Y operationpermitstheoscilloscopetoperformmany
measurementsnotpossible with conventionalsweep
operation.
Set the TRIGGER MODEswitch(g)totheX-Yposition.In
thismode,channel1 becomestheY axis input andchannel
2 becomestheX axis input.
The X andY positionsarenowadjustedusingthe•
POSITION @ andCH1• POSITION controlsrespectively.
X andY sensitivityaresetbyusingthechannel2 and chan-
nel1 VARIABLE VOLTS/DIV controlsrespectively.
[41VIDEOsignalobservation
Settingthe COUPLING (§)switch,totheTV FRAME orTV
LINE position permitsselectionofverticalorhorizontal
sync pulsesforsweep triggering whenviewingcomposite
videowaveforms.
This makesstable triggering invideosignalobservations
possibleregardlessofthe TRIG LEVEL control (£j).
Atmostpointsofmeasurement,a compositevideosignal
is ofthepolarity, that is,the sync pulsesarenegativeand
thevideoispositive.Inthis case, use" —" SLOPE.
Ifthewaveformistakenata circuit point wherethevideo
waveformisinverted,the sync pulsesarepositiveandthe
videoisnegative.Inthis case, use" + " SLOPE.
Fig. 10
Fig. 10showsa case inwhicha samplingpulse that is
delayedbya specifiedperiod from the input signalis
generated,andthesignalheldbythesamplingpulse
becomesthe output signal.
Intheexampleshowninthisfigure,the output signal SYNC
is 1/12ofthe input signal.
NOTE: Whenthe input signalfrequencyislow,thedots
ofthewaveformobservedbyequivalentsampling
become coarse.
If triggering isappliedincorrectly,theequivalent
samplingoperation will beabnormal,so that the
displayedwaveform will be totally different from
thereal input signal.
16
CRT display
Hold-off time
0Insufficienthold-off time
(2)Insufficienthold-off time
(3) Optimumhold-off time
Input
Sampling
pulse
Output

[C] READOUT OPERATION
1 CRTsurfacereadout
By rotating the INTEN (READOUT) controller(g)
clockwise uptotheveryend,charactersaredisplayed
onthe CRT. Adjustthebrightnessasnecessityrequires.
The CH1andCH2 scale factorsaredisplayedinthe
lowerpartoftheCRTinaccordance with settingofthe
MODE selectswitch(jj). Thesweep scale factoris
displayedinthelower right part.By pulling the•
POSITION/PULLx 10MAGswitch@ , a tenth scale
factorofthe SWEEP TIME/DIV dial@ isdisplayed.The
calendar isdisplayedintheupperleft.
NOTE: Ifthe DATA-ON/OFF switchonthe bottom isset
toOFFposition,thecalendarisnotdisplayed.
For thecalendarsetting,refertotheitem
"MaintenanceandAdjustment".
Whenthereadoutvaluesaredisplayed,brilliance
modulationmayinfluencethereal-time
waveforminsome cases. Insucha case, rotate
the INTEN (READOUT) controller(g)counter-
clockwise uptotheveryend.Thereadoutfunc-
tion turns OFF, andthebrilliancemodulationon
thereal-timewaveformdisappears.
2 Cursor measurement
4V1: SettheMODEselectswitch(jj)toALTand
the CURSORS selectswitch(fj)toAV\,
andtwohorizontalcursorlinesaredisplayedon
theCRTandvoltagedifferencebetweencursor
lines calculatedinaccordance with settingof
theCH1 VOLTS/DIV dial(2)isdisplayedinthe
upper right ontheCRT.BysettingtheCH1
VARIABLE controller(3)totheUNCALposi-
tion,voltageratioisdisplayed.
Movethecursorstothepositionstobe
measured with the AREF controllerif(|)and
A controller(||).
AV2: Setthe CURSORS selectswitch(31)toV2,and
voltagedifferenceinaccordance with theCH2
rangesettingisdisplayedintheupper right on
theCRTsimilarly with theabove.
AT: Setthe CURSORS selectswitch(fj)toAT,
andtwoverticalcursorlinesaredisplayedon
theCRTandtimedifferencebetweenthecur-
sor linescalculatedbasedonthesweep scale
factordisplayedinthelower right isdisplayed
intheupper right. Bysettingthe SWEEP
VARIABLE controller(§)totheUNCALposi-
tion,timeratioisdisplayed.
MAT: Setthe CURSORS selectswitch(fj)toMAT,
andtwoverticalcursorlinesaredisplayedonthe
CRT andfrequencybetweenthecursorlines
calculated basedonthesweep scale factor
displayedinthelower right isdisplayedintheup-
per right. Bysettingthe SWEEP VARIABLE con-
troller@ totheUNCALposition,phase dif-
ference isdisplayed.
Inthe case showninFig.10,thesamplingpulseis
generated with a certaindelay with respecttothe input
signal, andthesignalheldbythissamplingpulsebecomes
the output signal.
Inthisfigure,theperiodofthe output signalis1/12ofthe
input signal.
NOTE: Whentheequivalentsamplingisappliedtoan input
signal with a lowfrequency,thedotsofthe
waveformobtainedwillbecoarse.
When triggering isinaccurate,theequivalentsampl-
ingoperationwillbeabnormalandthewaveform
displayedonthescreenwillbe totally different from
the input signal.
17

APPLICATIONS
PROBE COMPENSATION
For accuratemeasurement,performappropriateprobecor-
rection prior tomeasurement.
1. Connecta probetotheINPUTterminal,andseteach
switchso that normalsweepisdisplayed.
2. ConnecttheprobetotheCALterminalonthe front
panel, andadjustthe SWEEP TIME/DIVswitchso that
several cyclesofthissignalaredisplayed.
3. Adjustcompensationtrimmeronprobefor optimum
square wavewaveshape(minimumovershoot, rounding
off,and tilt).
Correct
compensation
Over
compensation
Insufficient
compensation
3. SettheAC-GND-DCswitchtotheDC position to
observethe input waveform,includingitsDCcompo-
nent.Ifanappropriatereferencelevelor VOLTS/DIV
settingwasnotmade,thewaveformmaynotbevisible
ontheCRTscreenatthis point. Ifso,reset VOLTS/DIV
and/orthe• POSITION control.
4. Usethe<«• POSITION control to bring the portion of
thewaveformtobemeasuredtothecentervertical
graduationlineoftheCRTscreen.
5. Measuretheverticaldistance from thereferencelevelto
the point tobemeasured,(thereferencelevelcanbe
rechecked bysettingtheAC-GND-DCswitchagainto
GND).
To obtain therealvoltage, multiply theverticaldistance
value bythe VOLTS/DIV indicationvalue.Whena 10:1
probeisused,further multiply thevalueby10.Voltages
aboveandbelowthereferencelevelarepositiveand
negativevaluesrespectively.
(T)Whena 10:1probeisused:
DC level= Verticaldistance(div)x VOLTS/DIV settingx 10
(2) With directmeasurement
DC level= Verticaldistanceindivisionsx (VOLTS/DIV
setting)x (probeattenuationratio).
TRACE ROTATIONCOMPENSATION
Rotation from a horizontaltrace position canbethecause
ofmeasurementerrors.
Adjustthecontrolsfora singledisplay.SettheAC-GND-DC
switchtoGNDandA TRIG MODEto AUTO. Adjustthe•
POSITION control such that thetraceisoverthecenter
horizontalgraticuleline.Ifthetraceappearstobe rotated
from horizontal,alignit with thecentergraticulelineusing
the TRACE ROTATION control locatedonthe front panel.
1. DCVOLTAGEMEASUREMENT
Two typesofmeasurementmethodsareprovided;ordinary
measurementandcursormeasurement.
(1)OrdinaryMeasurement
To measurewaveformDClevel,carryoutthe following
operations:
1. ConnectthesignaltobemeasuredtotheINPUTjack.
For thechannelwhichisselectedbytheverticalMODE
switch, setthe AC-GND-DC switchtoDCandadjustthe
controlsfornormalsweep.Thenadjustthe VOLTS/DIV
and SWEEP TIME/DIVcontrolstothe optimum settings
formeasurementofthewaveform.
The VARIABLE switchshouldbesettoCAL.
2. Setthe TRIG MODEswitchtoAUTOandAC-GND-DC
switchtoGND.Thetracedisplayedatthis time isthe
GND level(referenceline).
Usingthe• POSITION control,adjustthetrace position
tothedesiredreferencelevelposition,makingsurenot
todisturbthissettingoncemade.
Measuringpointadjustedtothecenter
vertical scale byPOSITION
Groundpotentialadjustedby
£POSITION(referenceline)
Fig. 12
[EXAMPLE]
For theexample,the point beingmeasuredis3.8divisions
from thereferencelevel(groundpotential).
Ifthe VOLTS/DIV wassetto0.2(V/div)anda 10:1probe
was used.(SeeFig.12)
Substitutingthegivenvalues:
DC level= 3.8(div)x0.2(V)x 10= 7.6V
18
Fig. 11
Vertical
distance
,

12! Cursormeasurement
1) MaketheGNDluminescentlinebedisplayedbymeans
ofordinaryprocedures1)and2).
2) SetthecursormodetoA V!orA V2inaccor-
dance with thechanneltobeused.
3) AdjusttheA REFcursor(referenceline)totheGND
luminescentline.
4) SettheAC-GND-DCswitchtoDC.
5) AdjusttheA cursortoa point tobemeasured.
6) Measuredvalueisdisplayedintheupper right parton
thescreenposteriortoA V1orA V2.
Iftheattachedprobe PC-31 isused,measuredvaluein-
cludingtheattenuation ratio isdisplayed.Ifa probein-
compatible with thereadout function isused,measured
value is multiplied bytheattenuationratio.
LoweringoftheA cursorbelowtheA REFcur-
sor indicatesnegativevoltage,displaying" —".
Measuredvalue
2. MEASUREMENTOFTHEVOLTAGE
BETWEEN TWOPOINTSONA WAVEFORM
(1)Ordinarymeasurement
This techniquecanbeusedtomeasurepeak-to-peak
voltages.
1. ApplythesignaltobemeasuredtotheINPUTjack.Set
theverticalMODEtothechanneltobeused.Setthe
verticalMODEtothechanneltobeused.SettheAC-
GND-DC toAC,adjusting VOLTS/DIV and SWEEP
TIME/DIV fora normaldisplay.Setthe VARIABLE con-
trol toCALposition.
2. UsingtheT POSITION control,adjustthewaveform
position such that oneofthetwopointsfallsona CRT
graduationlineand that theotherisvisibleonthe
displayscreen.
3. Usingthe POSITION control,adjustthesecond
point tocoincide with thecenterverticalgraduationline.
4. Measuretheverticaldistancebetweenthetwopoints
and multiply thisbythesettingofthe VOLTS/DIV con-
trol.
Whena 10:1probeisused,further multiply thevalueby
10.
0Whena 10:1probeisused.
Voltspeak-to-peak
= Verticaldistance(div)x (VOLTS/DIV setting)x 10
(2) With directmeasurement
Voltagebetween2 points= Verticaldistance(div)x 2
points.
Adjust tothecenter
vertical scale with
POSITION.
Points tobemeasured
[EXAMPLE]
For theexample,thetwopointsareseparatedby4.5divi-
sions vertically.Setthe VOLTS/DIV settingbe0.2V/div
andtheprobeattenuationbe10:1.(SeeFig.14)
Substitutingthegivenvalue:
Voltagebetweentwopoints
= 4.5(div)x0.2(V/div)x 10= 9.0V
(2)Cursormeasurement
1) Makewaveformtobeobservedbedisplayedonthe
screen inordinaryprocedure1).
2) SetthecursormodetoA V1orA V2inaccor-
dance with thechanneltobeused.
3) AdjusttheA REFcursortoa lower point tobe
measured, andtheA cursortoanother point.
4) Measuredvalueisdisplayedintheupper right parton
thescreenposteriortoA V1orA V2.
cursor
Measuredvalue•
i REFcursor
Fig. 15
19
Vertical
distance
between
two
points
Fig. 14
Adjust tothehorizontal
scale with $ POSITION.
cursor
i REF
cursor
Fig. 13

3. ELIMINATIONOFUNDESIRED SIGNAL
COMPONENTS
The ADDfeaturecanbeconvenientlyusedtocancelout
theeffectofanundesiredsignalcomponentwhich
superimposedonthesignalyouwishtoobserve.
Procedure:
1. Applythesignalcontaininganundesiredcomponentto
theCH1INPUTjackandtheundesiredsignalitselfalone
totheCH2INPUTjack.
2. SettheverticalMODEswitchto CHOP and SOURCE
switchtoCH2.Verity that CH2representstheun-
wantedsignalinreversepolarity. Reverse the polarity
bysettingCH2INVasrequired.
3. SettheverticalMODEtoADD, SOURCE toV.MODE
andCH2 VOLTS/DIV and VARIABLE so that the
undesiredsignalcomponentiscancelledasmuchas
possible.Theremainingsignalshouldbethesignalyou
wishtoobservealoneandfreeoftheunwantedsignal.
Signal containingundesiredcomponent
(Brokenlines:undesiredcomponentenvelope)
Undesired componentsignal
Fig. 16
4.VOLTAGERATIOMEASUREMENTUSING
CURSORS
Overshootofsquare waves, etc.canbemeasuredinthe
following procedures:
1) Supplysignal into theINPUTterminal.SettheV.MODE
switchtothechanneltobeused,theAC-GND-DC
selectorswitchtoDC.andeachswitchso that ordinary
sweep isdisplayed.Thenadjustthe VOLTS/DIV and
SWEEP TIME/DIVfor easy waveformobservation.
2) Turnonthe VERTICAL VARIABLE switchtoadjustthe
amplitudeto5 divpoints(0%and100%)onthescreen
as necessityrequires with the• POSITION switches.
NOTE: Whenthe SWEEP TIME VARIABLE switchisset
toUNCAL,the unit issetto RATIO measurement
mode.
3) Setthecursormodeto^V1orA\I2 inaccor-
dance with thechanneltobeused.
4) AdjusttheA REF cursorto100%.
5) AdjusttheA cursortoa point overshootatwhichis
tobemeasured.
6) Overshootvoltage ratio with respecttothe5 div
(100%) point isdisplayedintheupper right partonthe
screen posteriorto RATIO.
REF -
cursor
Fig. 18
20
Signal withoutundesiredcomponent
Fig. 17
cursor -
Measuredvalue