Kenwood CS-1022 User manual

CS-1022.CS-1021,CS-1012
(DUALTRACEOSCILLOSCOPE)
CS-1020,CS-101•
(SINGLETRACEOSCILLOSCOPE)
INSTRUCTIONMANUAL

SAFETY
SymbolinThisManual
Thissymbolindicateswhereapplicablecautionaryor
otherinformationistobefound.
PowerSource
Thisequipmentoperatesfroma powersourcethatdoes
notapplymorethan250V rmsbetweenthesupply con-
ductorsorbetweeneithersupplyconductorandground.A
protectivegroundconnectionbywayofthegrounding con-
ductorinthepowercordisessentialforsafeoperation.
GroundingtheProduct
Thisequipmentisgroundedthroughthegroundingconduc-
torofthepower cord. Toavoidelectricalshock,plugthe
powercordintoa properlywiredreceptaclebeforeconnec-
tingtotheequipmentinputoroutputterminals.
UsetheProperPowerCord
Useonlythepowercordandconnectorspecifiedforyour
product.
UsetheProperFuse
Toavoidfirehazard,usea fuseofthecorrecttype.
DonotOperateinExplosiveAtmospheres
Toavoidexplosion,donotoperatethisproductinanex-
plosiveatmosphere.
DonotRemoveCoverorPanel
Toavoidpersonalinjury,donotremovethecoverorpanel.
Referservicingtoqualifiedpersonnel.
VoltageConversion
Ifthepowersourceisnotappliedtoyourproduct,contact
yourdealer.Toavoidelectricalshock,donotperformthe
voltageconversion.
CONTENTS
SAFETY2
FEATURES3
SPECIFICATIONS4
PREPARATIONFORUSE6
CONTROLSANDINDICATORS8
FRONTPANEL8
REARPANEL14
OPERATION14
INITIALSTARTINGPROCEDURE15
(1)NORMALSWEEPDISPLAYOPERATION15
(2)MAGNIFIEDSWEEPOPERATION18
(3)X-YOPERATION18
(4)VIDEOSIGNALOBSERVATION18
APPLICATION19
PROBECOMPENSATION19
TRACEROTATIONCOMPENSATION19
DCVOLTAGEMEASUREMENTS19
MEASUREMENTSOFTHEVOLTAGE
BETWEENTWOPOINTSONA WAVEFORM20
ELIMINATIONOFUNDESIREDSIGNAL
COMPONENTS20
TIMEMEASUREMENTS21
FREQUENCYMEASUREMENTS21
PULSEWIDTHMEASUREMENTS22
PULSERISETIMEANDFALLTIME
MEASUREMENTS22
TIMEDIFFERENCEMEASUREMENTS23
PHASEDIFFERENCEMEASUREMENTS24
RELATIVEMEASUREMENTS24
APPLICATIONOFX-YOPERATION27
ACCESSORIES29
Note:Thisinstructionmanualisdescribedforfivemodels.
Refertoitemappliedtoyourproduct.
2

FEATURES
•Verticalaxishashighsensitivityandwidebandwidth
andespeciallycoversfullyspecifiedfrequencyresponse
at2mV/divforallmodels.
CS-1022,1021;
DualTrace
1mV/div: DCto10MHz,-3dB
2mV/div: DCto20MHz,-3dB
CS-1012; DualTrace
1mV/div: DCto7 MHz,-3dB
2mV/div: DCto10MHz,-3dB
CS-1020; SingleTrace
1mV/div: DCto10MHz,-3dB
2mV/div: DCto20MHz,-3dB
CS-1010; SingleTrace
1mV/div: DCto7 MHz,-3dB
2mV/div: DCto10MHz,-3dB
•Verticalsensitivityrangeisselectablefrom 1 mV/divto
5V/divwithrotaryswitchcontinuously.
•Timebasepermitsthehighsweepspeed.
CS-1022,1020;20nsec/div(x10MAG)
CS-1021, 1012,1010;50nsec/div(x10MAG)
•Verticalsensitivityerrorandsweeprateerrorare±3%
andaccuratemeasurementsareprovided.
•The150mmrectangularCRTwithinternalgraticule
provideshighbrightnessandaccuratemeasurements,
freeofparallaxerror.
CS-1022,1020;domedmeshtypeCRTwithpost-
deflectionaccelerationandhighbrightness
phosphors(accelerationvoltage;6 kV).
CS-1021, 1012,1010;highbrightnessCRT(acce-
lerationvoltage;2 kV).
•Forconvenienceinmakingrisetimemeasurements,the
0%,10%,90%and100%levelsaremarkedonthe
graticulescaleoftheCRT.
•Tracerotationiselectricallyadjustablefromthefront
panel.
•BySCALEILLUMcontrol,thewaveformiseasyobserv-
edinthedarkandthephotographofthewaveformis
easyprovided.(ExceptCS-1021)
•SelectableAUTOFREERUNfunctionprovidessweep
withouttriggerinputsignal.
•TheFRAME-LINEswitchprovidesselectionofsync
pulseforsweeptriggeringfromsmallamplitudetolarge
amplitudewithoutadjustingwhenviewingcomposite
videowaveforms.
•ForCS-1022,1021and1012,verticalmode
automaticallyprovidesthetriggersignalwithTRIG
SOURCEandV.MODEswitches.
•X-Yoperationiseasyprovidedbyone-touche.
CS-1022,1021,1012;CH1Y axis,
CH2X axis
CS-1020,1010;VERTINPUTY axis
EXTTRIGINPUTX axis
•CS-1022and1012areprovidedwithCH1OUTPUT
terminaltomonitorinputsignalofCH1.
•CS-1020and1010areprovidedwithVERTOUTPUT
terminaltomonitorinputsignalofVERTINPUT.
3

SPECIFICATIONS
CS-1022 CS-1021 CS-1012 CS-1020 CS-1010
CRT 150FTM31 150GTM31A
or150UTM31 150GTM31A 150FTM31 150GTM31A
AccelerationVoltage 6kV 2kV 2kV 6kV 2kV
DisplayArea 8x10div(1div=10mm)
Type Rectangular,withinternalgraticule
VERTICALAXIS CH1andCH2 -
Sensitivity 1mV/divto5 V/div,±3%
Attenuator 12steps,1 mV/divto5 V/divin1-2-5sequence.
Verniercontrolforfullyadjustablesensitivitybetweensteps.
InputImpedance 1MO±2%,approx.35pF 1MQ±2%,approx.32pF 1Mfi±2%,approx.35pF
FrequencyResponse
2mV/divto5 V/div
1mV/div
DC; DCto20MHz,
-3dB
AC; 5 Hzto20MHz,
-3dB
DC; DCto10MHz,
-3dB
AC; 5 Hzto10MHz,
-3dB
DC; DC to10MHz,
-3dB
AC; 5 Hzto10MHz,
-3dB
DC; DCto7 MHz,
-3dB
AC; 5 Hz to7 MHz,
-3dB
DC; DC to20MHz,
-3dB
AC; 5 Hzto20MHz,
-3dB
DC; DC to10MHz,
-3dB
AC; 5 Hzto10MHz,
-3dB
DC; DCto10MHz,
-3dB
AC; 5 Hzto10MHz,
-3dB
DC; DC to7 MHz,
-3dB
AC; 5 Hzto7 MHz,
-3dB
RiseTime 17.5nsecorless
(20MHz)
35nsecorless
(10MHz)
35nsecorless
(10MHz)
50nsecorless
(7MHz)
17.5nsecorless
(20MHz)
35nsecorless
(10MHz)
35nsecorless
(10MHz)
50nsecorless
(7MHz)
Crosstalk
— 40dBminimum -
OperatingModes
CH1; singletrace
CH2; singletrace
ADD; CH1+CH2addeddisplay
ALT;twowaveformsalternating
CHOP; twowaveformschopped
-
ChopFrequency Approx.250kHz -
ChannelPolarity Normalorinverted,CH2onlyinverted -
/^MaximumInputvoltage 500Vp-por250V (DC+ ACpeak)
Non-Distorted
MaximumAmplitude Morethan8 div,
DCto20MHz Morethan5 div,
DCto20MHz Morethan6 div, DCto10MHz Morethan8 div,
DCto20MHz Morethan6 div,
DCto10MHz
HORIZONTALAXIS (inputthruCH2,x 10MAGnotincluded) (x10MAGnotincluded)
OperatingMode WithTRIGMODEswitch,X-Y
operationisselectable.
CH1; Y axis
CH2; X axis
WithTRIGMODEswitch,X-Y
operationisselectable.
VERT.INPUT;Y axis
EXTTRIGINPUT;X axis
Sensitivity Sameasverticalaxis(CH2) 100mV/div
InputImpedance Sameasverticalaxis(CH2) 1MQ±2%,
approx.32pF 1Mfi±2%,
approx.35pF
FrequencyResponse DC; DCto 1 MHz,
-3dB
AC; 5 Hzto 1 MHz,
-3dB
DC; DCto500kHz,
-3dB
AC; 5 Hzto500kHz,
-3dB
DC; DCto 1 MHz,
-3dB
DC; DCto500kHz,
-3dB
X-YPhaseDifference 3°orlessat
100kHz
3°orlessat50 kHz
3°orlessat 100kHz 3°orlessat50 kHz
/^MaximumInputVoltage Sameasverticalaxis(CH2) 50V (DC+ ACpeak)
SWEEP
TypeNORM Triggeringsweep
AUTO Sweepfreerunsinabsenceoftrigger
4

CS-1022 CS-1021 0S"1012 CS-1020 CS-1010
SweepTime
0.2 /is/divto0.5s/div,
±3%in20 ranges, in
1-2-5 sequence.
Verniercontrol provides
fullyadjustable sweep
time between steps.
0.5 /is/divto0.5s/div,
±3%in19 ranges, in
1-2-5 sequence.
Vernier control provides
fullyadjustable sweep
timebetween steps.
0.2 /is/divto0.5s/div,
±3%in20 ranges, in
1-2-5 sequence.
Verniercontrol provides
fullyadjustable sweep
timebetween steps.
0.5 /ts/divto0.5s/div,
±3%in19 ranges, in
1-2-5sequence.
Vernier controlprovides
fullyadjustable sweep
timebetween steps.
SweepMagnification x10(tentimes)±5%
Linearity
±3% allranges,
±5% on0.2/ts/divrangeatx 10magnification.
TRIGGERING
InternalSync V.MODE;Triggeredbyinputsignalselected
byverticalMODEsetting.
CH1; TriggeredbyCH1signal
CH2; TriggeredbyCH2signal
LINE; Triggeredbylinevoltage
INT; Triggeredbyverticalinputsignal
LINE; Triggeredbylinevoltage
ExternalSync
EXT; TriggeredbysignalappliedtoEXT
TRIGINPUTjack
ExternalsyncInput
Impedance
1 MS],±2%
approx.32pF
1 Mfi,±2%
approx.35pF
1 Mfi,±2%
approx.30pF 1Mfi,±2%
approx.30pF
/^MaximumExternal
TriggerVoltage 50V (DC+ AC peak)
Coupling
AC, VIDEOFRAME,VIDEOLINE
TiggerSensitivityTiggerSensitivity
FREQ, RANGEINTEXT
FREQ, RANGEINTEXT
FREQ, RANGEINTEXT
FREQ, RANGEINTEXT
FREQ, RANGEINTEXT
TiggerSensitivity
AUTO 20Hz
to20MHz1div0.1Vp-p
20Hz to20MHzIdiv0.2Vp-p
20Hz to10MHz 1 div 0.1 Vp-p 20Hzto20MHz
1divO.IVp-p
20Hz to10MHzIdiv 0.1 Vp-p
TiggerSensitivity
NORM 10Hz
to20MHzIdiv0.1Vp-p
10Hzto20MHz Idiv0.2Vp-p
10Hzto10MHz 1 div 0.1 Vp-p 10Hzto20MHz
Idiv 0.1 Vp-p 10Hzto10MHz1
div 0.1 Vp-p
TiggerSensitivity
VIDEO
FRAME, LINEIdiv0.1Vp-p
FRAME, LINE1div0.2Vp-p
FRAME, LINE1div 0.1 Vp-p
FRAME, LINE 1 div 0.1 VPD
FRAME, LINE 1 div 0.1 Vp-p
PROBEADJ.VOLTAGE 0.5V,±6%,squarewave,positivepolarity,approx.1 kHz
INTENSITYMODULATION
Sensitivity TTLcompatible
Positivevoltageincreasesbrightness.
Negativevoltagedecreasesbrightness.
InputImpedance Approx.10kfi
UsableFrequencyRange DCto2 MHz DCto1 MHz DCto2 MHz DCto
1 MHz
^MaximumInputVoltage 50V (DC+ ACpeak)
VERTICALAXISSIGNAL
OUTPUT
CH1 SIGNALOUTPUT
— CHI SIGNALOUTPUT
VERTICAL SIGNALOUTPUT
OutputVoltage
Approx. 50mV/div
(50Q load)
—
Approx.50 mV/div (50fi load)
OutputImpedance Approx.50Q Approx.50fi
FrequencyResponse 100Hzto20MHz,
-3dB(500 load) 100Hzto10MHz,
-3dB(50Q load) 100Hzto20MHz,
-3dB(50fi load) 100Hzto10MHz,
-3dB(50fi load)
TRACEROTATION
Electrical, adjustablefromfrontpanel
POWERREQUIREMENT AC100V/120V/220V ±10%,216-250V 50/60Hz
PowerConsumption Approx.43W Approx.39W Approx.41W Approx.38W Approx.36W
DIMENSIONS () dimensionsincludeprotrusionsfrombasicoutlinedimensions.
Width 260mm(260mm)
Height 160mm(180mm)
Depth 400mm(460mm)
5

CS-1022 CS-1021CS-1012 CS-1020 CS-1010
WEIGHT Approx.8.8kg Approx.8.4kg Approx.8.1kg
ENVIRONMENT
OperatingTemperatureand
HumidityforGuaranteed
Specifications
0°Cto40°C,85%maximumRH
FullOperatingTemperature
andHumidity 0°Cto50°C,90%maximumRH
ACCESSORIES
Probe 2 1
InstructionManual 1
ReplacementFuse0.8A 2
0.5A 2
•Circuitandratingaresubjecttochangewithoutnoticeduetodevelopmentsintechnology.
PREPARATIONFORUSE
SAFETY
Beforeconnectingtheinstrumenttoa powersource,
carefullyreadthefollowinginformation,thenverifythat
theproperpowercordisusedandtheproperlinefuseisin-
stalledforpowersource.Thespecifiedvoltageisshownat
theleftsideofthepowercordontherearpanel.Ifthe
powercordisnotappliedforspecifiedvoltage,thereis
alwaysa certainamountofdangerfromelectricshock.
Linevoltage
Thisinstrumentoperatesusingac-powerinputvoltages
that100/120/220/240V atfrequenciesfrom50Hzto
60Hz.
Powercord
Thegroundwireofthe3-wireacpowerplugplacesthe
chassisandhousingoftheoscilloscopeatearthground.Do
notattempttodefeatthegroundwireconnectionorfloat
theoscilloscope;todosomayposea greatsafetyhazard.
Theappropriatepowercordissuppliedbyanoptionthatis
specifiedwhentheinstrumentisordered.
TheoptionalpowercordsareshownasfollowsinFig.1.
Linefuse
Thefuseholderislocatedontherearpanelandcontains
thelinefuse.Verifythattheproperfuseisinstalledby
replacingthelinefuse.
EQUIPMENTPROTECTION
1. Neverallowa smallspotofhighbrilliancetoremainsta-
tionaryonthescreenformorethana fewseconds.The
screenmaybecomepermanentlyburned.A spotwilloc-
curonlywhenthescopeissetupforX-Yoperationand
nosignalisapplied.Eitherreducetheintensitysothe
spotisbarelyvisible,switchbacktonormalsweep
operationwhennosignalisapplied,orsetupthescope
forspotblanking.
2. Nevercovertheventilatingholesonthetopofthe
oscilloscope,asthiswillincreasetheoperating
temperatureinsidethecase.
3.Neverapplymorethanthemaximumratingtothe
oscilloscopeinputs.
CS-1022,1021,1012;CH1,CH2INPUTjacks
500Vp-por250V (dc+ acpeak)
EXTTRIGINPUTandZ AXISINPUT
jacks
50V (dc+ acpeak)
CS-1020,1010;VERTINPUTjack
A500Vp-por250V (dc+ acpeak)
EXTTRIGINPUTandZ AXISINPUT
jacks
50V (dc+ acpeak)
Neverapplyexternalvoltagetotheoscilloscopeoutput
terminals.
4. Alwaysconnecta cablefromtheearthground(GND)
jackoftheoscilloscopetothechassisoftheequipment
undertest.Withoutthiscaution,theentirecurrentfor
theequipmentundertestmaybedrawnthroughthe
probeclipleadsundercertaincircumstances.Suchcon-
6

ditionscouldalsoposea safetyhazard,whichthe
groundcablewillprevent.
5.Alwaysusetheprobegroundclipsforbestresults.Do
notuseanexternalgroundwireinlieuoftheprobe
groundclips,asundesiredsignalsmaybeintroduced.
6.Operationadjacenttoequipmentwhichproducesstrong
acmagneticfieldsshouldbeavoidedwherepossible.
Thisincludessuchdevicesaslargepowersupplies,
transformers,electricmotors,etc.,thatareoftenfound
inanindustrialenvironment.Strongmagneticshields
canexceedthepracticalCRTmagneticshieldinglimits
andresultinterferenceanddistortion.
7.Probecompensationadjustmentmatchestheprobeto
theinputofthescope.Forbestresults,compensation
ofprobeshouldbeadjustedinitially,thenthesamepro-
bealwaysusedwiththeinputofscope.Probecompen-
sationshouldbereadjustedwhenevera probefroma
differentscopeisused.(Seepage19)
8.Donotdepresstwoormorepush-switchesofthever-
ticalMODEswitchsimultaneousely.(ExceptADD)
Damagetoinstrumentmayresult.(CS-1022,
CS-1021, CS-1012)
9.InX-Yoperation,donotpulloutthePULLx10MAG
switch. Ifpulledoutit,noisemayappeareonthe
waveform.
Plugconfiguration Powercordandplugtype Factoryinstalled
instrumentfuse Linecordplugfuse
NorthAmerican
120volt/60Hz
Rated15amp
(12ampmax;NEC)
0.8A,250V
Fastblow
AGC/3AG None
UniversalEurope
220volt/50Hz
Rated16amp
0.5A,250V
Fastblow
5x 20mm None
U.K.
240volt/50Hz
Rated13amp
0.5A,250V
Fastblow
5x 20mm 0.5A
TypeC
Australian
240volt/50Hz
Rated10amp
0.5A,250V
Fastblow
5x 20mm None
NorthAmerican
240volt/60Hz
Rated15amp
(12ampmax;NEC)
0.5A,250V
Fastblow
AGC/3AG None
Switzerland
240volt/50Hz
Rated10amp
0.5A,250V
Fastblow
AGC/3AG
5x 20mm
None
Fig. 1 PowerInputVoltageConfiguration
7

CONTROLSANDINDICATORS
CS-1022,1021,1012 CS-1020,1010
Fig. 2 Fig. 3
FRONTPANEL
CS-1022,1021,1012 CS-1020,1010
0y POSITION
Rotationadjustsverticalpositionofchannel1 trace.
InX-Yoperation,rotationadjustsverticalpositionof
display.
0y POSITION
Rotationadjustsverticalpositionoftrace.
InX-Yoperation,rotationadjustsverticalpositionof
display.
(DVOLTS/DIV
Verticalattenuatorforchannel1;providesstepadjust-
mentofverticalsensitivity.WhenVARIABLEcontrol
(3)issettoCAL,verticalsensitivityiscalibratedin12
stepsfrom5 V/divto1 mV/div.
ForX-Yoperation,thiscontrolprovidesstepadjust-
mentofverticalsensitivity.
(DVOLTS/DIV
Verticalattenuator.Coarseadjustmentofvertical sen-
sitivity.Verticalsensitivityiscalibratedin12steps
from5 V/divto1 mV/divwhenVARIABLEcontrol
(DissettoCAL.
ForX-Yoperationthisprovidesstepadjustmentofver-
ticalsensitivity.
(3)VARIABLEControl
Rotationprovidesfinecontrolofchannel1 vertical
sensitivity.Inthefullyclockwise(CAL)position,the
verticalattenuatoriscalibrated.ForX-Yoperation,this
controlservesastheY axisattenuationfineadjust-
ment.
(DVARIABLEControl
Verticalattenuatoradjustment.Finecontrolofvertical
sensitivity.Inthefullyclockwise(CAL)position,the
verticalattenuatoriscalibrated.ForX-Yoperation,this
controlservesastheY axisattenuationfineadjust-
ment.
8

CS-1022,1021,101.2 CS-1020,1010
©AC-GND-DC
Three-positionleverswitchwhichoperatesasfollows:
AC: Blocksdccomponentofchannel1 input
signal.
GND: Openssignalpathandgroundsinputtover-
ticalamplifier.Thisprovidesa zero-signalbase
line, thepositionofwhichcanbeusedasa
referencewhenperformingdcmeasurements.
DC: Directinputofacanddccomponentofchan-
nel1 inputsignal.
(4)AC-GND-DC
Three-positionleverswitchwhichoperatesasfollows;
AC: Blocksdccomponentofinputsignal.
GND: Openssignalpathandgroundsinputtovertical
amplifier.Thisprovidesa zero-signalbaseline,
thepositionofwhichcanbeusedasa
referencewhenperformingdcmeasurements.
DC: Directinputofacanddccomponentofinput
signal.
(5)INPUTJack
Verticalinputforchannel1 trace.VerticalinputforX-Y
operation.
(5)INPUTJack
VerticalinputandverticalinputforX-Yoperation.
(DVOLTS/DIV
Verticalattenuatorforchannel2;providesstepadjust-
mentofverticalsensitivity.WhenVARIABLEcontrol
(7)issettoCAL,verticalsensitivityiscalibratedin12
stepsfrom5 V/divto1 mV/div.
InX-Yoperation,thiscontrolprovidesstepadjustment
ofhorizontalsensitivity.
(7)VARIABLEControl
Rotationprovidesfinecontrolofchannel2 vertical
sensitivity.Inthefullyclockwise(CAL)position,the
verticalattenuatoriscalibrated.InX-Yoperation,this
controlbecomesthefinehorizontalgaincontrol.
(8)AC-GND-DC
Three-positionleverswitchwhichoperatesasfollows:
AC: Blocksdccomponentofchannel2 input
signal.
GND: Openssignalpathandgroundsinputtover-
ticalamplifier.Thisprovidesa zero-signalbase
line, thepositionofwhichcanbeusedasa
referencewhenperformingdcmeasurements.
DC: Directinputofacanddccomponentofchan-
nel2 inputsignal.
(J)INPUTJack
Verticalinputforchannel2 traceinnormalsweep
operation. ExternalhorizontalinputinX-Yoperation.
(Q)CH2INV
IntheNORMposition(buttonreleased),thechannel2
signalisnon-inverted.IntheINVposition(button
engaged),thechannel2 signalisinverted.
(Q)^ POSITION,X-Y<<•
Rotationadjustsverticalpositionofchannel2 trace.
InX-Yoperationadjustshorizontalpositionofdisplay.
9

CS-1022,1021,1012
CS-1022,1021,1012 CS-1020,1010
@MODE
Five-positionpushswitch;selectsthebasicoperating
modesoftheoscilloscope.
CH1: Onlytheinputsignaltochannel1 is
displayedasa singletrace.
CH2: Onlytheinputsignaltochannel2 is
displayedasa singletrace.
ADD: WhenbothCH1andCH2buttonsare
(CH1+CH2) engaged,thewaveformsfromchannel1
andchannel2 inputsareaddedandthe
sumisdisplayedasa singletrace.When
theCH2INV© buttonisengaged,the
waveformfromchannel2 issubtracted
fromthechannel1 waveformandthe dif-
ferenceisdisplayedasa singletrace.
ALT:Alternatesweepisselectedregardlessof
sweeptime.
CHOP: Chopsweepisselectedregardlessof
sweeptimeatapproximately250kHz.
(Q)POWER,SCALEILLUM(ExceptCS-1021)
Fullycounterclockwiserotationofthiscontrol(OFF
position)turnsoffoscilloscope.Clockwiserotation
turnsonoscilloscope.Furtherclockwiserotationof
thecontrolincreasestheilluminationlevelofthescale.
©POWER.SCALEILLUM
Fullycounterclockwiserotationofthiscontrol(OFF
position)turnsoffoscilloscope.Clockwiserotation
turnsonoscilloscope.Furtherclockwiserotationof
thecontrolincreasestheilluminationlevelofscale.
(0)PILOTLamp
LampLightswhenoscilloscopeisturnedon. (8>PILOTLamp
Lightswhenoscilloscopeisturnedon.
to
Fig. 4

CS-1022,1021,1012 CS-1020,1010
©GNDterminal/bindingpost.
Earthandchassisground. (IJ)GNDterminal/bindingpost.
Earthandchassisground.
(0)PROBEADJ.
Providesapproximately1 kHz,0.5Voltpeak-to-peak
squarewavesignal.Thisisusefulforprobecompen-
sationadjustment.
©PROBEADJ.
Providesapproximately1 kHz,0.5Voltpeak-to-peak
squarewavesignal.Thisisusefulforprobecompensa-
tionadjustment.
(g)TRACEROTATION
Electricallyrotatestracetohorizontalposition.
Strongmagneticfieldsmaycausethetracetobe
tilted.
Thedegreeoftiltmayvaryasthescopeismoved
fromonelocationtoanother.Inthesecases,adjust
thiscontrol.
©TRACEROTATION
Electricallyrotatestracetohorizontalposition.
Strongmagneticfieldsmaycausethetracetobe
tilted.
Thedegreeoftiltmayvaryasthescopeismovedfrom
onelocationtoanother.Inthesecases,adjustthis
control.
(ODFOCUS
Adjuststhetraceforoptimumfocus. @>FOCUS
Adjuststhetraceforoptimumfocus.
(0)INTENSITY
Clockwiserotationofthiscontrolincreasesthe
brightnessofthetrace.
(0)INTENSITY
Clockwiserotationofthiscontrolincreasesthe
brightnessofthetrace.
®ASTIG
Astigmatismadjustmentprovidesoptimumspot
roundnesswhenusedinconjunctionwithFOCUSand
INTENSITYcontrols.Verylittlereadjustmentofthis
controlisrequiredafterinitialadjustment.
(§)ASTIG
Astigmatismadjustmentprovidesoptimumspot
roundnesswhenusedinconjuctionwithFOCUSand
INTENSITYcontrols.Verylittlereadjustmentofthis
controlisrequiredafterinitialadjustment.
©EXTTRIGINPUTJack
Inputterminalforexternaltriggersignal.
WhenSOURCEswitchisselectedinEXTposition,the
inputsignalattheEXTTRIGINPUTjackbecomesthe
trigger.
(fj)EXTTRIGINPUTJack
Inputterminalforexternaltriggersignalandexternal
horizontalinputterminalforX-Yoperation.
WhenSOURCEswitchisselectedinEXTposition,the
inputsignalattheEXTTRIGINPUTjackbecomesthe
trigger.
@LEVEL/PULLSLOPE(-)
LEVEL:Triggerleveladjustmentdeterminespoint
onwaveformwheresweepstarts.
WhenCOUPLINGswitchisselectedin
VIDEO-FRAMEorLINE,thetriggerlevelad-
justmenthasnoeffect.
SLOPE: + equalsmostpositivepointoftriggering
and—equalsmostnegativepointoftrigger-
ing. Push-pullswitchselectspositiveor
negativeslope.
Sweepistriggeredonnegative-goingslope
ofsyncwaveformwithswitchpulledout.
@LEVEL/PULLSLOPE(-)
LEVEL:Triggerleveladjustmentdeterminespoint
onwaveformwheresweepstarts.
WhenCOUPLINGswitchisselectedin
VIDEO-FRAMEorLINE,thetriggerlevelad-
justmenthasnoeffect.
SLOPE: + equalsmostpositivepointoftriggering
and—equalsmostnegativepointoftrigger-
ing. Push-pullswitchselectspositiveor
negativeslope.Sweepistriggeredon
negative-goingslopeofsyncwaveform
withswitchpulledout.
11

CS-1022, 1021,1012
CS-1022, 1021,1012
CS-1020, 1010
(§)COUPLING
Three-positionleverswitch;selectscouplingforsync
triggersignal.
AC: Triggerisaccoupled.Blocksdccomponent
ofinputsignal;mostcommonlyused posi-
tion.
VIDEO
FRAME: Verticalsyncpulsesofa compositevideo
signalareselectedfortriggering.
VIDEO
LINE: Horizontalsyncpulsesofa compositevideo
signalareselectedfortriggering.TheLINE
positionisalsousedforallnon-video
waveforms.
@)COUPLING
Three-positionleverswitch;selectscouplingforsync
triggersignal.
AC: Triggerisaccoupled.Blocksdccomponent
ofinputsignal;mostcommonlyused posi-
tion.
VIDEO
FRAME: Verticalsyncpulsesofa compositevideo
signalareselectedfortriggering.
VIDEO
LINE: Horizontalsyncpulsesofa compositevideo
signalareselectedfortriggering.TheLINE
positionisalsousedforallnon-video
waveforms.
(§)SOURCE
Five-positionleverswitch;selectstriggeringsource
forthesweep,withfollowingpositions;
V.MODE:Thetriggersourceisdeterminedbyver-
ticalMODEselection.
CH1: Channel1 signalisusedasa trig-
gersource.
CH2: Channel2 signalisusedasa trig-
gersource.
ADD: Thealgebraicsumofchannel1
andchannel2 signalisthetrigger
source. (IfCH2INVengaged,the
differencebecomesthetrigger
source.)
(§)SOURCE
Three-positionleverswitch;selectstriggeringsource
forthesweep,withfollowingpositions;
INT: Waveformbeingobservedisusedassync
trigger.
LINE: Sweepistriggeredbylinevoltage
(50/60Hz).
EXT: SweepistriggeredbysignalappliedtoEXT
TRIGINPUTjack® .
12
Fig. 5

CS-1022,1021,1012 CS-1020,1010
CHOP: Thedisplaycannotbesynchroniz-
edwiththeinputsignalsincethe
choppingsignalbecomesthe trig-
gersource.
CH1: Sweepistriggeredbychannel1 signal
regardlessofverticalMODEselection.
CH2: Sweepistriggeredbychannel2 signal
regardlessofverticalMODEselection.
LINE: Sweepistriggeredbylinevoltage
(50/60Hz).
EXT:SweepistriggeredbysignalappliedtoEXT
TRIGINPUTjack© .
@TRIGMODE
Three-positionleverswitch;selectstriggeringmode.
AUTO: Triggeredsweepoperationwhentrigger
signalispresent,automaticallygenerates
sweep(freeruns)inabsenceoftrigger
signal.
NORM: Normaltriggeredsweepoperation.No
traceispresentedwhena propertrigger
signalisnotapplied.
X-Y:X-Yoperation.Channel1 inputsignalpro-
ducesverticaldeflection(Yaxis).Channel
2inputsignalproduceshorizontaldeflec-
tion(Xaxis).
ThisoperatesregardlessverticalMODE
selection.
@TRIGMODE
Three-positionleverswitch;selectstriggeringmode.
AUTO: Triggeredsweepoperationwhentrigger
signalispresent,automaticallygenerates
sweep(freeruns)inabsenceoftriggersignal.
NORM: Normaltriggeredsweepoperation.Notraceis
presentedwhena propertriggersignalisnot
applied.
X-Y:X-Yoperation.Verticalinputsignalproduces
verticaldeflection(Yaxis).EXTTRIGinput
produceshorizontaldeflection(Xaxis).
@VARIABLEControl
Finesweeptimeadjustment.Inthefullyclockwise
(CAL)position,thesweeptimeiscalibrated.
®VARIABLEControl
Finesweeptimeadjustment.Inthefullyclockwise
(CAL)position,thesweeptimeiscalibrated.
ForX-Yoperation,thiscontrolservesastheX axis
gainadjustment.
©SWEEPTIME/DIV
Horizontalcoarsesweeptimeselector.
Selectscalibratedsweeptimesof0.2/ts/divto0.5s/
divin20steps (CS-1021, CS-1012...0.5^s/divto
0.5s/divin19steps)whensweeptimeVARIABLE
control® issettoCALposition(fullyclockwise).
©SWEEPTIME/DIV
Horizontalcoarsesweeptimeselector.
Selectscalibratedsweeptimesof0.2/ts/divto
0.5s/divin20steps(CS-1010...0.5/xs/divto
0.5s/divin19steps)whensweeptimeVARIABLE
control® issettoCALposition(fullyclockwise).
(§)«<•POSITION,PULLx10MAG
Rotationadjustshorizontalpositionoftrace.Push-pull
switchselectsx10magnification(PULLx10MAG)
whenpulledout;normalwhenpushedin.
(§)POSITION.PULLx10MAG
Rotationadjustshorizontalpositionoftrace.Push-pull
switchselectsx10magnification(PULLx10MAG)
whenpulledout;normalwhenpushedin.
ForX-Yoperation,thiscontrolservesastheX axis
positioncontrol.
13

CS-1022,1021,1012 CS-1020,1010
@Z AXISINPUT
Externalintensitymodulationinput;TTLcompatible.
Positivevoltageincreasesbrightness,negative
voltagedecreasesbrightness.
(§)Z AXISINPUT
Externalintensitymodulationinput;TTLcompatible.
Positivevoltageincreasesbrightness,negative
voltagedecreasesbrightness.
#CHIOUTPUT(ExceptCS-1021)
CH1verticaloutputsignalconnector.
ACcoupledoutputconnector.
Thisconnectorisusedtomeasurethefrequencyby
connectingthefrequencycounter.Forstableopera-
tion, donotconnectCH1OUTPUTtochannel2 input
ascascadedoperation.
(§)VERTOUTPUT
Verticaloutputsignalconnector.
ACcoupledoutputconnector.
Thisconnectorisusedtomeasurethefrequencyby
connectingthefrequencycounter.
(ft)FuseHolder
Containsthelinefuse.Verifythattheproperfuseis
installedwhenreplacingthelinefuse.
100V,120V 0.8A
220V,240V 0.5A
(fj)FuseHolder
Containsthelinefuse.Verifythatproperfuseisin-
stalledwhenreplacingthelinefuse.
100V,120V0.8A
220V,240V0.5A
14
Fig. 6
REARPANEL

OPERATION
INITIALSTARTINGPROCEDURE
Untilyoufamiliarizeyourselfwiththeuseofallcontrols,
thefollowingproceduremaybeusedtostandarizethein-
itialsettingofcontrolsasa referencepointandtoobtain
traceontheCRTinpreparationforwaveformobservation.
Whenusingtheprobe(s),refertoprobe'sinstructionsand
"PROBECOMPENSATION"listedinAPPLICATIONofthis
manual.
CS-1022,1021,1012 CS-1020,1010
(1) NORMALSWEEPDISPLAYOPERATION
1. TurnthePOWERcontrol© clockwise— thepower
supplywillbeturnedonandthepilotlampwilllight.
Setthesemodesasfollows;
MODE© : CH1
TRIGMODE© : AUTO
2. ThetracewillappearinthecenteroftheCRTdisplay
andcanbeadjustedbytheCH1• POSITION© and
o POSITION® controls.Next,adjusttheINTENSI-
TY© and,ifnecessary,theFOCUS© foreaseof
observation.
3.VerticalModes
WithverticalMODE© settoCH1,applyaninput
signaltotheCH1INPUT(5)jackandadjustthe
VOLTS/DIV(2)controlfora suitablesizedisplayofthe
waveform.Ifthewaveformdoesnotappearinthe
display,adjusttheVOLTS/DIVandy POSITIONcontrols
tobringthewaveformintothecenterportionoftheCRT
display.Operationwitha signalappliedtotheCH2IN-
PUT(DjackandtheverticalMODEsettoCH2is
similartotheaboveprocedure.
IntheADDmode,thealgebraicsumofCH1+CH2is
displayed. IftheCH2INV© switchhasbeenengag-
ed, thealgebraicdifferenceofthetwowaveforms,
CH1— CH2isdisplayed.Ifbothchannelsaresettothe
sameVOLTS/DIV,thesumordifferencecanberead
directlyinVOLTS/DIVfromtheCRT.IntheALTmode,
(1) NORMALSWEEPDISPLAYOPERATION
1. TurnthePOWERcontrol© clockwise—thepower
supplywillbeturnedonandthepilotlampwilllight.Set
theTRIGMODE© toAUTOposition.
2. ThetracewillappearinthecenteroftheCRTdisplay
andcanbeadjustedbythey POSITION0 and
POSITION© controls.Next,adjusttheINTENSITY
®and,ifnecessary,theFOCUS© foreaseof
observation.
3.ApplyaninputsignaltoINPUT© jackandadjustthe
VOLTS/DIV(2)controlfora suitablesizedisplayofthe
waveform.Ifthewaveformdoesnotappearinthe
display,adjusttheVOLTS/DIVandv POSITIONcontrols
tobringthewaveformintothecenterportionoftheCRT
display.
4. Ifnotraceisobtainable,refertothefollowingTRIGGER-
INGprocedures.
Thedisplayonthescreenwillprobablybeunsynchroniz-
ed.
RefertoTRIGGERINGproceduresbelowadjusting syn-
chronizationandsweepspeedtoobtaina stabledisplay
showingthedesirednumberofwaveforms.
TRIGGERING
Theinputsignalmustbeproperlytriggeredforstable
waveformobservation.TRIGGERINGispossibletheinput
signalINTernallytocreatea triggerorwithanEXTernally
15
Fig. 7

•:'CSr1022, 1021, 1012
onesweepdisplayesthechannel1 signalandthenext
sweepdisplaysthechannel2 signalinanalternatingse-
quence.
IntheCHOPmode,thesweepischoppedatanapprox-
imate250kHzrateandswitchedbetweenCH1and
CH2. NotethatintheCHOPmodeofoperationwiththe
SOURCEswitchsettoV.MODE,thetriggersource
becomesthechoppingsignalitself,makingwaveform
observationimpossible.UseALTmodeinsteadinsuch
cases,orselecta triggerSOURCEofCH1orCH2.
Ifnotraceisobtainable,refertothefollowingTRIGGER-
INGprocedures.
4. AftersettingtheSOURCEswitch,adjusttheSLOPE
control.
Thedisplayonthescreenwillprobablybeunsynchroniz-
ed. RefertoTRIGGERINGprocedurebelowforadjusting
synchronizationandsweepspeedtoobtaina stable
displayshowingthedesirednumberofwaveform.
TRIGGERING
Theinputsignalmustbeproperlytriggeredforstable
waveformobservation.TRIGGERINGispossibletheinput
signalINTernallytocreatea triggerorwithanEXTernally
providedsignaloftimingrelationshiptotheobserved
signal, appliyingsucha signaltotheEXTTRIGINPUTjack.
TheSOURCEswitchselectstheinputsignalthatistobe
usedtotriggerthesweep,withINTsyncpossibilities
(V.MODE,CH1,CH2,LINE)andEXTsyncpossibility.
*InternalSync
WhentheSOURCEselectionisinINT(V.MODE,CH1,
CH2, LINE),theinputsignalisconnectedtotheinternal
triggercircuit.Inthisposition,a partoftheinputsignalfed
totheINPUT(Dor(Djackisappliedfromthevertical
amplifiertothetriggercircuittocausethetriggersignal
triggeredwiththeinputsignaltodrivethesweep.
WhentheV.MODEpositionisselected,thetriggersource
isdependentupontheverticalMODEselection.
WhentheverticalMODEselectionisinALT,theALT posi-
tionisveryconvenientformeasuringthetimedurationof
thewaveform.However,forphaseortimingcomparisons
betweenthechannel1 andchannel2 waveforms,both
tracesmustbetriggeredbythesamesyncsignal.
WhentheSOURCEselectionisinCH1,theinputsignalat
thechannel1 INPUT(5)jackbecomestriggerregardlessof
thepositionofverticalMODE.WhentheSOURCEselection
isinCH2,theinputsignalatthechannel2 INPUT(Djack
becomestriggerregardlessofthepositionofvertical
MODE. WhentheSOURCEselectioninLINE,theacline
voltagepoweringtheoscilloscopeisusedassynctrigger-
ing.
*EnternalSync
WhentheSOURCEselectionisinEXT,theinputsignalat
theEXTTRIGINPUT@ jackbecomesthetrigger.This
signalmusthavea timeorfrequencyrelationshiptothe
CS-1020,1010
providedsignaloftimingrelationshiptotheobserved
signal, applyingsucha signaltotheEXTTRIGINPUTjack.
TheSOURCEswitchselectstheinputsignalthatistobe
usedtotriggerthesweep,withINTsyncpossibilityand
EXTsyncpossibility.
•InternalSync
WhentheSOURCEselectionisinINT,theinputsignalis
connectedtotheinternaltriggercircuit.Inthisposition,a
partoftheinputsignalfedtotheINPUT© jackisapplied
fromtheverticalamplifiertothetriggercircuittocausethe
triggersignaltriggeredwiththeinputsignaltodrivethe
sweep.
WhentheSOURCEselectionisinLINE,theaclinevoltage
poweringtheoscilloscopeisusedassynctriggering.
•ExternalSync
WhentheSOURCEselectionisinEXT,theinputsignalat
theEXTTRIGINPUT© jackbecomesthetrigger.This
signalmusthavea timeorfrequencyrelationshiptothe
signalbeingobservedtosynchronizethedisplay.External
syncispreferedforwaveformobservationinmanyapplica-
tions. Forexample,Fig.8 showsthatthesweepcircuitis
drivenbythegatesignalwhenthegatesignalintheburst
signalisappliedtotheEXTTRIGINPUTjack.Fig.8 also
showstheinput/outputsignals,wheretheburstsignal
generatedfromthegatesignalisappliedtotheinstrument
undertest.Thus,accuratetriggeringcanbeachieved
withoutregardtotheinputsignalfedtotheINPUT(Djack
sothatnofurthertriggeringisrequiredevenwhentheinput
signalisvaried.
Triggersignal
(Gatesignal)
Inputsignalto
amplifier,etc.
Outputsignalfrom
amplifier,etc.
Fig. 8
16

CS-1022. 1021.1012
CS-1020, 1010
signalbeingobservedtosynchronizethedisplay.External
syncispreferedforwaveformobservationinmanyapplica-
tions. Forexample,Fig.8 showsthatthesweepcircuitis
drivenbythegatesignalwhenthegatesignalintheburst
signalisappliedtotheEXTTRIGINPUTjack.Fig.8 also
showstheinput/outputsignals,wheretheburstsignal
generatedfromthesignalisappliedtotheinstrumentunder
test.Thus,accuratetriggeringcanbeachievedwithout
regardtotheinputsignalfedtotheINPUT(Dor(9)jackso
thatnofurthertriggeringisrequiredevenwhentheinput
signalisvaried.
Triggersignal
(Gatesignal)
CH1 (Inputsignal to
' amplifier, etc.)
CH2 (Outputsignal
from amplifier, etc.)
*TriggeringLevel
TriggerpointonwaveformisadjustedbytheLEVEL/PULL
SLOPE@ control.Fig.9 showstherelationshipbetween
theSLOPEandLEVELofthetriggerpoint.Triggeringlevel
canbeadjustedasnecessary.
•TriggeringLevel
TriggerpointonwaveformisadjustedbytheLEVEL/PULL
SLOPE® control.Fig.9 showstherelationshipbetween
theSLOPEandLEVELofthetriggerpoint.Triggeringlevel
canbeadjustedasnecessary.
LEVEL
*AutoTrigger
WhentheTRIGMODE© selectionisinAUTO,the
sweepcircuitbecomesfree-runningaslongasthereisno
triggersignal,permittinga checkofGND level. Whena trig-
gersignalispresent,thetriggerpointcanbedeterminedby
theLEVELcontrolforobservationasinthenormaltrigger
signal. Whenthetriggerlevelexceedsthelimit,thetrigger
circuitalsobecomesfree-runningwherethewaveform
startsrunning.WhentheLEVELcontrolispushedinand/or,
whenthetriggersignalisabsentorthetriggeringlevelex-
ceedsthelimit,thereisnosweep.
LEVEL
Fig. 9
*AutoTrigger
WhentheTRIGMODE© selectionisinAUTO,the
sweepcircuitbecomesfree-runningaslongasthereisno
triggersignal,permittinga checkofGND level. Whena trig-
gersignalispresent,thetriggerpointcanbedeterminedby
theLEVELcontrolforobservationasinthenormaltrigger
signal. Whenthetriggerlevelexceedsthelimit,thetrigger
circuitalsobecomesfree-runningwherethewaveform
startsrunning.WhentheLEVELcontrolispushedinand/or,
whenthetriggersignalisabsentorthetriggeringlevelex-
ceedsthelimit,thereisnosweep.
17
SLOPE "-" RANGE
SLOPE " + " RANGE
Fig. 9
Fig. 8
SLOPE "-" RANGE
SLOPE " + " RANGE

ICS-1022, 1021, 1012
(2)MAGNIFIEDSWEEPOPERATION
Sincemerelyshorteningthesweeptimetomagnifya por-
tionofanobservedwaveformcanresultinthedesiredpor-
tiondisappearingoffthescreen,suchmagnifieddisplay
shouldbeperformedusingtheMAGNIFIEDSWEEP.
UsingthePOSITIONcontrol,adjustthedesiredportion
ofwaveformtotheCRT.PulloutthePULLx10MAG con-
troltomagnifythedisplay10times.Forthistypeof
displaythesweeptimeistheSWEEPTIME/DIVsetting
dividedby10.
(3)X-YOPERATION
Forsomemeasurements,anexternalhorizontaldeflection
signalisrequired.ThisisalsoreferredtoasanX-Y
measurement,wheretheY inputprovidesverticaldeflec-
tionandX inputprovideshorizontaldeflection.
X-Yoperationpermitstheoscilloscopetoperformmany
typesofmeasurementsnotpossiblewithconventional
sweepoperation.TheCRTdisplaybecomesanelectronic
graphoftwoinstantaneousvoltages.Thedisplaymaybea
directcamparisonoftwovoltagessuchasduringphase
measurement,frequencymeasurementwithLissajous
waveforms.
Touseanexternalhorizontalinput,usethefollowingpro-
cedure;
1. SettheTRIGMODEswitchtoX-Ytheposition.
2. Usethechannel1 probefortheverticalinputandthe
channel2 probeforthehorizontalinput.
3.AdjusttheamountofhorizontaldeflectionwiththeCH2
VOLTS/DIVandVARIABLEcontrols.
4. TheCH2(vertical)POSITION(Q)controlnowserves
asthehorizontalpositioncontrol,andthe* POSITION
controlisdisabled.
5.Allsynccontrolsaredisconnectedandhavenoeffect.
(4)VIDEOSIGNALOBSERVATION
TheVIDEOFRAME/LINEswitchpermitsselectionofver-
ticalorhorizontalsyncpulseforsweeptriggeringwhen
viewingcompositevideowaveforms.IntheLINEposition,
horizontalsyncpulsesareselectedastriggerstopermit
viewingofhorizontallineofvideo.Thisisalsotheposition
usedforviewingallnon-videowaveforms.IntheFRAME
position, verticalsyncpulsesareselectedastriggersto
permitviewingofverticalfieldsandframesofvideo.When
observingthevideowaveforms,stabledisplayisobtained
onthescreenregardlesstheTRIGLEVEL@ control.
Atmostpointsofmeasurement,a compositevideosignal
isofthepolarity,thatis,thesyncpulsesarenegativeand
thevideoispositive.Inthiscase,use" —"SLOPE.
Ifthewaveformistakenata circuitpointwherethevideo
waveformisinverted,thesyncpulsesarepositiveandthe
videoisnegative.Inthiscase,use" + " SLOPE.
CS-1020,,1010
(2)MAGNIFIEDSWEEPOPERATION
Sincemerelyshorteningthesweeptimetomagnifya por-
tionofanobservedwaveformcanresultinthedesiredpor-
tiondisappearingoffthescreen,suchmagnifieddisplay
shouldbeperformedusingtheMAGNIFIEDSWEEP.
UsingthePOSITIONcontrol,adjustthedesiredportion
ofwaveformtotheCRT.PulloutthePULLx10MAG con-
troltomagnifythedisplay10times.Forthistypeof
displaythesweeptimeistheSWEEPTIME/DIVsetting
dividedby10.
(3)X-YOPERATION
Forsomemeasurements,anexternalhorizontaldeflection
signalisrequired.ThisisalsoreferredtoasanX-Y
measurement,whereY inputprovidesverticaldeflection
andtheX inputprovidedhorizontaldeflection.Thehorizon-
talinputmaybea sinusoidalwave,suchasusedforphase
measurement,oranexternalsweepvoltage.Thisinput
voltagemustbeabout100millivoltsperdivisionofdeflec-
tion(usually1 voltormorepeak-to-peakwillprovide
satisfactoryresults).X andY positionsareajustedusing
the«*•POSITION® and£ POSITION© controls
respectively.Touseanexternalhorizontalinput,usethe
followingprocedure.
1. SettheTRIGMODEswitchtotheX-Yposition.
2. Connecttheexternalhorizontalsignalsourcethrougha
cabletotheEXTTRIGINPUTjack.
3.Adjusttheamountofhorizontaldeflectionwiththe
VARIABLEcontrol,whichadjuststhegaintothe
horizontalamplifier.
4. Allsynccontolaredisconnectedandhavenoeffect.
(4)VIDEOSIGNALOBSERVATION
TheVIDEOFRAME/LINEswitchpermitsselectionofver-
ticalorhorizontalsyncpulseforsweeptriggeringwhen
viewingcompositevideowaveforms.IntheLINEposition,
horizontalsyncpulsesareselectedastriggerstopermit
viewingofhorizontallineofvideo.Thisisalsotheposition
usedforviewingallnon-videowaveforms.IntheFRAME
position, verticalsyncpulsesareselectedastriggersto
permitviewingofverticalfieldsandframesofvideo.When
observingthevideowaveforms,stabledisplayisobtained
onthescreenregardlesstheTRIGLEVEL® control.
Atmostpointsofmeasurement,a compositevideosignal
isofthepolarity,thatis,thesyncpulsesarenegativeand
thevideoispositive.Inthiscase,use" —"SLOPE.
Ifthewaveformistakenata circuitpointwherethevideo
waveformisinverted,thesyncpulsesarepositiveandthe
videoisnegative.Inthiscase,use" + " SLOPE.
18

APPLICATION
PROBECOMPENSATION
Toobtainanaccuratemeasurementresult,theprobemust
beadjustedcorrectlybeforemeasurement.
1. ConnecttheprobetotheINPUTterminalandsetthe
controlfora normalsweepdisplay.
2. ConnecttheprobetothePROBEADJterminalonthe
frontpanel,andadjusttheSWEEPTIME/DIVcontrolto
displaya fewcyclesofthesignaloutputfromit.
3.Adjustthetrimmerontheprobetoobtainthefollowing
correctcompensationwaveform.
Correct
compensation
Over
compensation
Insufficient
compensation
Fig. 10
TRACEROTATIONCOMPENSATION
Rotationfroma horizontaltracepositioncanbethecause
ofmeasurementerrors.
Adjustthecontrolsfora singledisplay.SettheAC-GND-DC
switchtoGNDandTRIGMODEtoAUTO.Adjustthe•
POSITIONcontrolsuchthatthetraceisoverthecenter
horizontalgraticuleline.Ifthetraceappearstoberotated
fromhorizontal,alignitwiththecentergraticulelineusing
theTRACEROTATIONcontrollocatedonthefrontpanel.
DCVOLTAGEMEASUREMENTS
Thisproceduredescribesthemeasurementprocedurefor
DCwaveforms.
Procedure:
1. ConnectthesignaltobemeasuredtotheINPUT
jack.SettheverticalMODEtothechanneltobeused
(unappliedtoCS-1020and1010).SettheVOLTS/DIV
andSWEEPTIME/DIVswitchtoobtaina normaldisplay
ofthewaveformtobemeasured.SettheVARIABLE
controltotheCALposition.
2. SettheTRIGMODEtoAUTOandAC-GND-DCtothe
GNDposition,whichestablishedthezerovoltreference.
Usingthe• POSITIONcontrol,adjustthetraceposition
tothedesiredreferencelevelposition,makingsurenot
todisturbthissettingoncemade.
3.SettheAC-GND-DCswitchtotheDCpositionto
observetheinputwaveform,includingitsDCcompo-
nent.IfanappropriatereferencelevelorVOLTS/DIV
settingwasnotmade,thewaveformmaynotbevisible
ontheCRTscreenatthispoint.Ifso,resetVOLTS/DIV
and/orthe % POSITIONcontrol.
4. UsetheO POSITIONcontroltobringtheportionof
thewaveformtobemeasuredtothecentervertical
graduationlineoftheCRTscreen.
5.Measuretheverticaldistancefromthereferencelevelto
thepointtobemeasured,(thereferencelevelcanbe
recheckedbysettingtheAC-GND-DCswitchagainto
GND).
Multiplythedistancemeasuredabovebythe
VOLTS/DIVsettingandtheprobeattenuationratioas
well. Voltagesaboveandbelowthereferencelevelare
positiveandnegativevaluesrespectively.
Usingtheformula:
DClevel= Verticaldistanceindivisionsx (VOLTS/DIVset-
ting)x (probeattenuationratio).
[EXAMPLE]
Fortheexample,thepointbeingmeasuredis3.8divisions
fromthereferencelevel(groundpotential).
IftheVOLTS/DIVwassetto0.2V anda 10:1probewas
used. (SeeFig.11)
Substitutingthegivenvalues:
DClevel= 3.8(div)x 0.2(V)x 10 =
7.6V
19
Measuringpointadjustedtothecenter
verticalscalebyPOSITION
Vertical
distance
Fig. 11
Groundpotentialadjustedby
POSITION(referenceline)

MEASUREMENTOFTHEVOLTAGEBETWEENTWO
POINTSON A WAVEFORM
Thistechnique canbe used to measurepeak-to-peak
voltages.
Procedure:
1. Apply the signal tobe measured tothe INPUTjack. Set
theverticalMODE tothe channel tobe used(unapplied
toCS-1020 and 1010). Setthe AC-GND-DC to AC, ad-
justingVOLTS/DIV and SWEEPTIME/DIV fora normal
display. Setthe VARIABLE toCAL.
2. Using they POSITIONcontrol,adjust the waveform
positionsuchthat oneofthetwo pointsfalls ona CRT
graduationline and that the other is visible onthe
displayscreen.
3.Using the POSITIONcontrol,adjust the second
point to coincidewith the centerverticalgraduationline.
4. Measure the verticaldistancebetween thetwo points
andmultiplythis bythe setting ofthe VOLTS/DIV con-
trol.
If a probe is used,furthermultiplythis bythe attenua-
tionratio.
Using the formula:
VoltsPeak-to-Peak
=Verticaldistance(div) x (VOLTS/DIVsetting) x (probe
attenuationratio)
Adjust tothe center
verticalscalewith
ELIMINATIONOFUNDESIREDSIGNAL
COMPONENTS(Unapplied to CS-1020 and 1010)
The ADD feature canbe convenientlyused to cancel out
theeffect ofan undesiredsignalcomponentwhich
superimposed onthe signal you wish to observe.
Procedure:
1. Apply the signalcontaining an undesiredcomponent to
theCH1INPUTjackand the undesiredsignalitselfalone
to theCH2 INPUTjack.
2. Setthe verticalMODE to CHOP and SOURCE toCH2.
Verifythat CH2 represents the unwantedsignal in
reversepolarity. If necessaryreversepolarity by setting
CH2 toINV.
3. Setthe verticalMODE to ADD,SOURCE toV. MODE
and CH2 VOLTS/DIV and VARIABLE so that the
undesiredsignalcomponent is cancelled as much as
possible. The remainingsignalshould bethe signal you
wish to observealone and free ofthe unwantedsignal.
Signalcontainingundesiredcomponent
(Brokenlines:undesiredcomponentenvelope)
20
Verticaldistance
betweentwo
points
Points tobe measured
Fig. 12
Adjust tothe horizontal
scalewithPOSITION.
[EXAMPLE]
For the example, thetwo points are separated by4.4 divi-
sionsvertically. Setthe VOLTS/DIVsetting be0.2 V/div
and the probeattenuation be 10:1. (See Fig. 12)
Substituting the givenvalue:
Voltagebetween two points = 4.4(div)x0.2(V)x10 = 8.8V
Undesiredcomponentsignal