Trio CS-1060 User manual

CS-1OBO
CS-1040
(TRIPLETRACEOSCILLOSCOPE)
INSTRUCTIONMANUAL
TRIO

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.
SAFETY2
FEATURES3
SPECIFICATIONS4
PREPARATIONFORUSE7
CONTROLSANDINDICATORS9
FRONTPANEL9
REARPANEL13
OPERATION14
INITIALSTARTINGPROCEDURE14
(1)NORMALSWEEPDISPLAYOPERATION14
(2)MAGNIFIEDSWEEPOPERATION17
(3>DELAYEDSWEEPOPERATION17
(4)ALTERNATINGSWEEPOPERATION17
(5)X-YOPERATION18
(6)VIDEOSIGNALOBSERVATION18
(7)SINGLESWEEPOPERATION18
APPLICATION19
PROBECOMPENSATION19
TRACEROTATIONCOMPENSATION19
DCVOLTAGEMEASUREMENTS19
MEASUREMENTSOFTHEVOLTAGE
BETWEENTWOPOINTSONA WAVEFORM20
ELIMINATIONOFUNDESIREDSIGNAL
COMPONENTS20
TIMEMEASUREMENTS21
FREQUENCYMEASUREMENTS21
PULSEWIDTHMEASUREMENTS22
PULSERISETIMEANDFALLTIME
MEASUREMENTS22
TIMEDIFFERENCEMEASUREMENTS23
PHASEDIFFERENCEMEASUREMENTS24
RELATIVEMEASUREMENTS24
PULSEJITTERMEASUREMENT26
SWEEPMULTIPLICATION(MAGNIFICATION)26
DELAYEDSWEEPTIMEMEASUREMENT27
PULSEWIDTHMEASUREMENTSUSING
DELAYEDSWEEP27
FREQUENCYMEASUREMENTSUSING
DELAYEDSWEEP28
PULSEREPETITIONTIME29
USINGDELAYEDSWEEPFORMEASUREMENTSOF
RISETIMESANDFALLTIMES29
TIMEDIFFERENCEMEASUREMENTSUSING
DELAYEDSWEEP29
TRIPLE-TRACEAPPUCATIONS30
OBSERVATIONOFTHESTARTPORTIONOF
THEIRREGULARWAVEFORM30
X-YAPPLICATION31
ACCESSORIES32
Note:Thisinstructionmanualisdescribedfortwomodels.
Refertoitemappliedtoyourproduct.
2

FEATURES
1. Verticalaxishashighsensitivityandwidebandwidth
andespeciallycoversfullyspecifiedfrequency
responseat5mV/divforallmodels.
CS-1060;
1mV/div,2mV/div: DCto20MHz,-3dB
5mV/div: DCto60MHz,-3dB
CS-1040;
1mV,2mV/div: DCto 1 5 MHz,-3dB
5mV/div: DCto40MHz,-3dB
2. Verticalsensitivityrangeisselectablefrom1mV/divto
5V/divwithrotaryswitchcontinuously.
3.Timebasepermitsthehighsweepspeed.
CS-1060;5nsec/div(x10MAG)
CS-1040;10nsec/div(x10MAG)
4. Verticalsensitivityerrorandsweeprateerrorare
±3% andaccuratemeasurementsareprovided.
5.The150mmrectangular,domedmeshtypeCRTwith
internalgraticuleprovideshighbrightnessandac-
curatemeasurements,freeofparallaxerror.
CS-1060;accelerationvoltage;16kV.
CS-1040;accelerationvoltage;12kV.
6.Forconvenienceinmakingrisetimemeasurements,
the0%,10%,90%and100%levelsaremarkedon
thegraticulescaleoftheCRT.
7.Thebuilt-inAuto-focuscircuitkeepsthewaveformsin
clearfocusautomaticallyregardlessoftheINTENSITY
controlsetting.
8.Tracerotationiselectricallyadjustablefromthefront
panel.
9.BySCALEILLUMcontrol,thewaveformiseasy
observedindarkenedareaandthephotographofthe
waveformiseasyprovideda singlephotographofthe
waveformsuperimposedonthegraticulescale.
10. Delaysweepmodesareavailableinnotonly Con-
tinuousDelay(STARTSAFTERDELAY)andtrigger
Delay(TRIG)butalsobothA andB zeroDelay(DELAY
TIMEZERO)allowingtoobservethewholeextentof
anycomplicatedpulsetrainwithmagnifictionas
necessary.
11. Singlesweeppermitsviewingandphotographingone-
timeevents.
12. TRIPLEmodepresentsa triple-traceoscilloscope;even
sixtracesofwaveformsmaybeobservedsimultane-
ouslywithHORIZDISPLAYsetatALT.
13. Thedelaylinepermitsviewingofleadingedgeofhigh-
frequency,fastrisetimepulses.
14. SelectableAUTOFREERUNfunctionprovidessweep
withouttriggerinputsignal.
15. TheFRAME-LINEswitchprovidesselectionofsync
pulseforsweeptriggeringfromsmallamplitudeto
largeamplitudewithoutadjustingwhenviewingcom-
positevideowaveforms.
16. Verticalmodeautomaticallyprovidesthetriggersignal
withTRIGSOURCEandV.MODEswitches.
17. X-Yoperationiseasyprovidedbyone-touche.
18. ProvideswithCH1OUTPUTterminaltomonitorinput
signalofCH1.
19. SWEEPGATEandSWEEPOUTPUTterminalsarepro-
vides.
20. DELAYTIMEMULTpermitstheaccuratetime
measurementswiththedialscale.
3

SPECIFICATIONS
CS-1060 CS-1040
CRT 150HTM31
Rectangular,withinternalgraticule 150JTM31
Rectangular,withinternalgraticule
AccelerationVoltage 16
kV
12 kV
DisplayArea 8x10
div(1 div= 10mm)
VERTICALAXIS CH1and
CH2
Sensitivity 1mV/divto
5 V/div, ±3%
Attenuator 12steps,
1 mV/div to5 V/div in1-2-5 sequence.
Verniercontrol for fullyadjustablesensitivitybetweensteps.
InputImpedance 1
MO±2%, approx 20pF
FrequencyResponse
5mV/div to 5V/div
DC; DCto60 MHz, -3dB
AC; 5 Hzto60 MHz, -3dB
DC; DCto40 MHz, -3dB
AC; 5 Hz, to40 MHz, -3dB
1mV/div, 2 mV/div DC; DCto20 MHz, -3dB
AC; 5 Hzto20 MHz, -3dB
DC; DCto15 MHz, -3dB
AC; 5 Hzto15 MHz, -3dB
RiseTime 5.8nsec
or less (60MHz)
17.5nsec or less (20MHz)
8.8nsec or less (40MHz)
23.4nsec or less (15MHz)
SignalDelayTime Approx.20nsec
ontheCRT screen
Crosstalk
— 40dB minimum
OperatingModes
CH1; singletrace
CH2; singletrace
ADD; CH1+CH2added asa singletrace
DUAL; CH1and CH2,dualtrace
TRIPLE; CH1, CH2andCH3 tripletrace
ALT;dualtrace or tripletrace,alternating
CHOP; dual or tripletrace,chopped
ChopFrequency Approx.
250kHz
ChannelPolarity Normal
or inverted,channel 2 onlyinverted
A MaximumInputvoltage 500
Vp-por250V (DC + ACpeak)
Non-DistortedMaximumAmplitude Morethan
8 div(DCto60MHz)
Morethan 8 div(DCto40MHz)
VERTICALAXIS CHS
Sensitivity 0.1V/div
and1 V/div ±3%
InputResistance 1
MQ±2%
InputCapacitance Approx27pF
FrequencyResponse
DC: DCto60 MHz, -3dB DC: DCto40 MHz, -3dB
FrequencyResponse
AC: 5 Hzto60 MHz, -3dB AC: 5 Hzto40 MHz, -3dB
RiseTime 5.8nsec
or less 8.8nsec or less
SignalDelayTime Same
as CH1 andCH2
A MaximumInputVoltage 50
V (DC + ACpeak)
HORIZONTALAXIS
Inputthru CH2, x 10MAGnot included
OperatingModes WithHORIZDISPLAYswitch,
X-Y operation is selectable
CH1; Y axis
CH2; X axis
Sensitivity Same
as verticalaxis (CH2)
4

CS-1060 CS-1040
InputImpedance Sameasverticalaxis(CH2)
FrequencyResponse
DC; DCto1 MHz,-3dB
AC; 5 Hzto1 MHz,-3dB
X-YPhaseDifference 3°orlessat100kHz
AMaximumInputVoltage Sameasverticalaxis(CH2)
SWEEP
Type A;A sweep
ALT; A sweep(intensifiedfordurationofB sweep)andB sweep(delayed
sweep)alternating
INT; DurationofB sweepisdisplayedasanintensifiedportionofA sweep.
B;Delayedsweep
X-Y;X-Yoscilloscope
SweepTime A 0.05
/is/div to0.5s/div,±3%in22
ranges, in1-2-5sequence.
Verniercontrolprovidesfullyadjustable
sweeptimebetweensteps.
0.1 /is/div to0.5s/div,±3%in21
ranges, in1-2-5sequence.
Verniercontrolprovidesfullyadjustable
sweeptimebetweensteps.
SweepTime
B 0.05 /ts/div to50ms/div,±3%in19
ranges, in 1 -2-5sequence. 0.1
/ts/div to50ms/div,±3%in18
ranges, in 1 -2-5sequence.
SweepMagnification x10(tentimes)±5%
Linearity ±3% allranges,
±5% on0.05 /is/div to0.1 /is/div rangeatx 10MAG.
Holdoff ContinuouslyvariablefromNORMtomorethantentimes(MAX)
TraceSeparation BsweepcanbeseparatedfromA sweepupto4 divisions,continuously
adjustable.
DelayMethod Continuousdelay(STARTSAFTERDELAY),Triggerdelay(TRIG),Zerodelay
(DELAYTIMEZERO)
DelayTime From100nsecto0.5sec.Availabledelaytimeis0.2to10timestheA sweep
timesetting,continuouslyadjustable.
Timedifferencemeasurement
accuracy
±2%
DelayJitter
1/20000 oftentimesofA sweeptimesetting
TRIGGERING
Triggermode
AUTO, NORM,FIX,SINGLE
Triggersource
V.MODE; TriggerselectedbyverticalMODEswitch.
CH1; TriggeredbyCH1signal
CH2; TriggeredbyCH2signal
CH3/EXT;TriggeredbyCHSsignal
LINE; Triggeredbylinevoltage
Coupling
AC, HFrej,DC,VIDEOFRAME,VIDEOLINE
Triggersensitivity FREQ.RANGE INT EXT FREQ.RANGE INT EXT
DC DC-60MHz 1div 0.1Vp-p DC-40MHz 1div 0.1VP-P
AC SameasforDCbutincreasedminimumlevelbelow10Hz
AC, HFrej Increasedminimumlevelbelow10Hzandabove20kHz
VIDEO
FRAME, LINE 1div 0.1Vp-p
FRAME, LINE 1div 0.1Vp-p
AUTO: Sameasabovespecificationsforabove50Hz.
FIX:Sameasabovespecificationsforabove50Hz.
5

CS-1060 CS-1040
PROBEADJ.VOLTAGE
0.5 V,±6%, squarewave,positivepolarity,approx 1 kHz
INTENSITYMODULATION
Sensitivity TTLcompatiblepositivevoltageincreasesbrightness,negativevoltagedecreases
brightness.
InputImpedance Approx.
10kQ
UsableFrequencyRange DC
to5 MHz
DC to3.5MHz
A MaximumInputVoltage 50
V (DC + ACpeak)
VERTICALAXISSIGNALOUTPUT CH1OUTPUT
OutputVoltage Approx.
50 mV/divinto 50ft
OutputImpedance Approx.
50ft
FrequencyResponse
5mV/div to5 V/div 100
Hzto60MHz,-3dB into 50ft
100 Hzto40MHz,-3dB into 50ft
1mV/div, 2 mV/div 100
Hzto20MHz,-3dB into 50ft
100 Hzto15MHz,-3dB into 500
GATEOUTPUT
OutputVoltage TTLcompatible
OutputImpedance Approx.
220ft
SWEEPOUTPUT
OutputVoltage 1
Vp-p
OutputImpedance Approx.
1 kft
POWERREQUIREMENT
PowerSupply 100
V/120 V/220V/240 V ± 10%
LineFrequency 50/60
Hz
PowerConsumption Approx.
65W
DIMENSIONS(WxHxD)
304(346)x160(173)x401(461) mm
( ) dimensionsincludeprotrusionfrombasicoutlinedimensions
WEIGHT
Approx. 11kg
ENVIRONMENTAL
WithinSpecifications 10°C
to 35°C, 85%max. relativehumidity
FullOperation 0°C
to 50°C, 90%max. relativehumidity
ACCESSORIESSUPPLIED
Probe PC-29.....2 PC-20....2
SpareFuse 2
A 2
1 A 2
InstructionManual 1
*Circuit and rating are subject to changewithoutnotice dueto developments in technology.
6

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.
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.Push-pushswitchesareusedforx 10MAGandSLOPE
("+ " and" —"); everypushoftheswitchalternates
themodetotheotheroneassignedtothesameswitch.
LookattheLEDindicatorsforwhichmodesareworking.
9.InX-Yoperation,donotpulloutthePULLx10MAG
switch. Ifpulledoutit,noisemayappeareonthe
waveform.
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.
CH1, CH2INPUTjacks:500Vp-por250V (dc+ ac
peak)
CH3INPUTjack:50V (dc+ acpeak)
ZaxisINPUTjack:50V (dc+ acpeak)
Neverapplyexternalvoltagetotheoscilloscopeoutput
terminals.
4. Alwaysconnecta cablefromtheearthground(GND)
jackoftheoscilloscopetothechassisoftheequipment
undertest.Withoutthiscaution,theentirecurrentfor
theequipmentundertestmaybedrawnthroughthe
probeclipleadsundercertaincircumstances.Such con-
ditionscouldalsoposea safetyhazard,whichthe
groundcablewillprevent.
7

Plugconfiguration Powercordandplugtype Factoryinstalled
instrumentfuse Linecordplugfuse
NorthAmerican
120volt/60Hz
Rated15amp
(12ampmax;NEC)
2A,250V
Fastblow
AGC/3AG None
UniversalEurope
220volt/50Hz
Rated16amp
1A,250V
Fastblow
5x 20mm None
U.K.
240volt/50Hz
Rated13amp
1A,250V
Fastblow
5x 20mm
1A
TypeC
Australian
240volt/50Hz
Rated10amp
1A,250V
Fastblow
5x 20mm None
NorthAmerican
240volt/60Hz
Rated15amp
(12ampmax;NEC)
1A,250V
Fastblow
AGC/3AG None
Switzerland
240volt/50Hz
Rated10amp
1A,250V
Fastblow
AGC/3AG
5x 20mm
None
Fig. 1 PowerInputVoltageConfiguration
8

CONTROLSANDINDICATORS
FRONTPANEL
0T POSITION
Rotationadjustsverticalpositionofchannel1 trace.
InX-Yoperation,rotationadjustsverticalpositionof
display.
(2)VOLTS/DIV
Verticalattenuatorforchannel1;providesstepadjustment
ofverticalsensitivity.WhenVARIABLEcontrol(3)issetto
CAL, verticalsensitivityiscalibratedin12stepsfrom
5V/divto1 mV/div.
ForX-Yoperation,thiscontrolprovidesstepadjustmentof
verticalsensitivity.
(3)VARIABLEControl
Rotationprovidesfinecontrolofchannel1 vertical sen-
sitivity.Inthefullyclockwise(CAL)position,thevertical
attenuatoriscalibrated.ForX-Yoperation,thiscontrol
servesastheY axisattenuationfineadjustment.
(4)AC-GND-DC
Three-positionleverswitchwhichoperatesasfollows:
AC: Blocksdccomponentofchannel1 inputsignal.
GND: Openssignalpathandgroundsinputtovertical
amplifier.Thisprovidesa zero-signalbaseline,the
positionofwhichcanbeusedasa referencewhen
performingdcmeasurements.
DC: Directinputofacanddccomponentofchannel1
inputsignal.
(5) INPUTJack
Verticalinputforchannel1 trace.VerticalinputforX-Y
operation.
(6)VOLTS/DSV
Verticalattenuatorforchannel2;providesstepadjustment
ofverticalsensitivity.WhenVARIABLEcontrol(7)issetto
CAL, verticalsensitivityiscalibratedin12stepsfrom
5V/divto1 mV/div.
InX-Yoperation,thiscontrolprovidesstepadjustmentof
horizontalsensitivity.
(7)VARIABLEControl
Rotationprovidesfinecontrolofchannel2 vertical sen-
sitivity.Inthefullyclockwise(CAL)position,thevertical
attenuatoriscalibrated.InX-Yoperation,thiscontrol
becomesthefinehorizontalgaincontrol.
(8)AC-GND-DC
Three-positionleverswitchwhichoperatesasfollows:
AC: Blocksdccomponentofchannel2 inputsignal.
GND: Openssignalpathandgroundsinputtovertical
amplifier.Thisprovidesa zero-signalbaseline,the
positionofwhichcanbeusedasa referencewhen
performingdcmeasurements.
DC: Directinputofacanddccomponentofchannel2
inputsignal.
Fig. 2

Fig. 3
(DINPUTJack
Verticalinputforchannel2 traceinnormalsweepopera-
tion. ExternalhorizontalinputinX-Yoperation.
©CH2INV
IntheNORMposition(buttonreleased),thechannel2
signalisnon-inverted.IntheINVposition(button
engaged),thechannel2 signalisinverted.
(0)• POSITION,X-Y
Rotationadjustsverticalpositionofchannel2 trace.
InX-Yoperationadjustshorizontalpositionofdisplay.
@MODE
Pushbuttonswitchassembly;selectsthebasicoperating
modesoftheoscilloscope.
CH1: Onlytheinputsignaltochannel1 isdisplayed
asa singletrace.
CH2: Onlytheinputsignaltochannel2 isdisplayed
asa singletrace.
ADD: WhenbothCH1andCH2buttonsareengaged,
(CH1+CH2)thewaveformsfromchannel1 andchannel2
inputsareaddedandthesumisdisplayedasa
singletrace.WhentheCH2INV@ buttonis
engaged, thewaveformfromchannel2 issub-
tractedfromthechannel1 waveformandthe
differenceisdisplayedasa singletrace.
ALT:Alternatesweepisselectedregardlessof
sweeptimeasdualtrace(CH1andCH2)or tri-
pletrace(CH1,CH2andCH3)
CHOP: Chopsweepisselectedregardlessofsweep
timeatapproximately250kHzasdualtrace
(CH1andCH2)ortripletrace(CH1,CH2and
CH3).
DUAL/
TRIPLE: Whenthisbuttonreleased,dualtracemode
allowstoobservewaveformsofchannel1 and
channel2 inputsignals.
Whenengangedthisbutton,ifeitherALTor
CHOPswitchispushedin,tripletracemode
presentstracesofchannel1,channel2 and
channel3 inputwaveforms.
(§)POWER,SCALEILLUM
Fullycounterclockwiserotationofthiscontrol(OFF posi-
tion)turnsoffoscilloscope.Clockwiserotationturnson
oscilloscope.Furtherclockwiserotationofthecontrolin-
creasestheilluminationlevelofscale.
@PILOTLamp
Lightswhenoscilloscopeisturnedon.
@-CTGNDterminal/bindingpost.
Earthandchassisground.
®PROBEADJ.
Providesapproximately1 kHz,0.5Voltpeak-to-peak
squarewavesignal.Thisisusefulforprobecompensation
adjustment.
10

@TRACEROTATION
Electricallyrotatestracetohorizontalposition.
Strongmagneticfieldsmaycausethetracetobetilted.
Thedegreeoftiltmayvaryasthescopeismovedfromone
locationtoanother.Inthesecases,adjustthiscontrol.
®)FOCUS
Adjuststhetraceforoptimumfocus.
@INTENSITY/PULLASTIG
INTENSITY:Clockwiserotationofthiscontrolincreases
thebrightnessofthetrace.
ASTIG: Pulloutandrotatethisknob.Astigmatismad-
justmentprovidesoptimumspotroundness
whenusedinconjunctionwithFOCUS con-
trolregardlessintensitycontrol.
®LEVEL/PUSHSLOPE/PULLCH30 POSITION
LEVEL:Triggerleveladjustmentdeterminespointon
waveformwheresweepstarts.
WhenCOUPLINGswitchisselectedin
VIDEO-FRAMEorLINE,thetriggerlevelad-
justmenthasnoeffect.
SLOPE: + equalsmostpositivepointoftriggeringand
— equalsmostnegativepointoftriggering.
Push-pushswitchselectspositiveornegative
slope.
CH3T POSITION:
Whenpulledout,rotationadjustsvertical
positionofchannel3 trace.Thiscontrolisus-
edwhentheverticalMODEisselectedto TRI-
PLE, regardlessofLEVELsettingandSLOPE
controls.
®SLOPEindicator
RedLEDlightswhenthesweepistriggeredonthepositive-
goingslopeofinputsignaiandgreenLEDlightswhenthe
sweepistriggerednegative-goingslopeofinputsignal.
@SOURCE
Five-positionleverswitch;selectstriggeringsourceforthe
sweep,withfollowingpositions;
V. MODE: Thetriggersourceisdeterminedbyvertical
MODEselection.
CH1: Channel1 signalisusedasa trigger
source.
CH2: Channel2 signalisusedasa trigger
source.
ADD: Thealgebraicsumofchannel1 and
channel2 signalisthetriggersource.(If
CH2INVengaged,thedifference
becomesthetriggersource.)
ALT:DisplayisalternatelytriggeredbyCH1
andCH2(dual-traceoperation)orCH1,
CH2andCH3(triple-traceoperation).
CHOP: Thedisplaycannotbesynchronized
withtheinputsignalsincethechopping
signalbecomesthetriggersource.
CH1: Sweepistriggeredbychannel1 signal
regardlessofverticalMODEselection.
CH2: Sweepistriggeredbychannel2 signal
regardlessofverticalMODEselection.
EXT/
CH3: SweepistriggeredbysignalappliedtoEXTTRIG
INPUTjack® .
LINE: Sweepistriggeredbylinevoltage(50/60Hz).
@COUPUNG
Five-positionleverswitch;selectscouplingforsynctrigger
signal.
AC: Triggerisaccoupled.Blocksdccomponentofin-
putsignal;mostcommonlyusedposition.
HFrej: Syncsignaliscoupledthrougha low-passfilter
toeliminatehighfrequencycomponentsfor
stabletriggeringoflowfrequencysignals.
DC: Thesyncsignalisdccoupledforsyncwhichin-
cludestheeffectsofdccomponents.
VIDEO
FRAME: Verticalsyncpulsesofa compositevideosignal
areselectedfortriggering.
VIDEO
LINE: Horizontalsyncpulsesofa compositevideo
signalareselectedfortriggering.
®CH3orA EXTTRIG
Inputterminalofchannel3 signalorexternaltriggersignal
ofA TRIG.WhenverticalMODEissetatTRI,notonly
channel1 andchannel2 inputsignalsbutchannel3 signal
isobservablesimultaneously.
®AC(0.1V,1 V)-GND-DC(1V,0.1V)
Fivepositionleverswitchselectschannel3 inputcoupling
andchannel3 verticalattenuator(0.1V/div,1 V/div).
(§)HORIZ.DISPLAY
Usedtoselectthehorizontaldisplaymode.
A:OnlyA sweepisoperativewiththeB sweepdor-
mant.
ALT:A sweepalternateswiththeB sweep.Forthis
modeofoperation,theB sweepappearsasanin-
tensifiedsectionontheA sweep.
INT:DurationoftheB sweepappearsasanintensified
sectionontheA sweep.
B:OnlydelayedB sweepisoperative.
X-Y:Channel1 becomestheY axisandchannel2
becomestheX axisforX-Yoperation.Thesetting
oftheverticalMODEandTRIGMODEswitches
havenoeffect.
®TRIGMODE
Five-positionleverswitch;selectstriggeringmode.
AUTO: Triggeredsweepoperation.Whentriggersignal
ispresent,automaticallygeneratessweep(free
runsinabsenceoftriggersignal.)
NORM: Normaltriggeredsweepoperation.Notraceis
presentedwhena propertriggersignalisnotap-
plied.
11

Fig. 4
FIX:Sameasautomaticmode,automatically
generatessweep(freeruns)inabsenceoftrigger
signalexcepttriggerthresholdisautomatically
fixedatcenterofinputsignalregardlessofset-
tingofLEVELcontrol.
SINGLE: Singlesweepoperation.Notethatinthismode,
simultaneousobservationofboththeA andB
sweepsisnotpossible.
Note;
Fordualortripletrace,singlesweepoperation,
verticalMODEmustnotbesettoALT.Usethe
CHOPmodeinstead.
RESET:Thisistheresetswitchforsinglesweepopera-
tion. SwitchingtheRESETsideinitiatesa single
sweepwhichwillbeginwhenthenextsync trig-
geroccurs.
@B MODE
Usedtoselectdelaysweepmode.
STARTSAFTERDELAY:
Bsweepistriggeredimmediatelyafterthedelay
setbyA SWEEPTIME/DIVandDELAYTIME
MULTcontrols.
TRIG: "TriggerableAfterDelay"operationB Sweep
triggeringisinhibitedduringdelayperiodsetby
ASWEEPTIME/DIVandDELAYTIMEMULT
controls. B Sweepistriggeredbyfirstoccurence
ofpropertriggersignalafterthedelay.Inthis
casethesourceoftheB triggeristhesameas
thesourceoftheA trigger.BothA andB trigger
levelsareadjustedbyTRIGLEVELcontrol.
DELAYTIMEZERO:
AandB sweepsaretriggeredsimultaneously,
regardlessofDELAYTIMEMULTsetting.This
modeisusedtoobservethefirstportionof com-
plicatedperiodofpulsetrainswithmagnifica-
tion.
(f§)ReadyIndicator
InSINGLEtriggeringmode,lightswhenTRIGMODEswitch
issettoRESETandgoesoffwhensweepiscompleted.
@>A SWEEPTIME/DIV
HorizontalcoarseA sweeptimeselector.
Selectscalibratedsweeptimesof0.05 jts/div to0.5s/div
in22steps(CS-1040...0.1 /ts/div to0.5s/divin21
steps)whenSWEEPVARIABLEcontrol@ issettoCAL
position(fullyclockwise).
®B SWEEPTIME/DIV
CoarsehorizontalB sweeptimeselector.
Selectssweeptimesof0.05/*s/divto50ms/divin19
steps(CS-1040....0.1/is/divto50ms/divin18steps).
BsweeptimeselectorshouldbesetfasterthanA sweep
time.
(§)SWEEPVARIABLEControl
FineA sweeptimeadjustment.Inthefullyclockwise(CAL)
position, thesweeptimeiscalibrated.
NofineadjustmentisavailablefortheB sweeptime.
12

@x 10MAGIndicator
Lightswhenx 10Sweepmagnificationisselected.
@POSITION/PUSHx 10MAG/PULLFINE
Rotationadjustshorizontalpositionoftrace.
Rotationbecomesfineadjustmentofhorizontalpositionof
tracewhenpulledout.Tentimessweepexpandswhen
pushedin.
Push-pushswitchalternatelyturnsx 10MAGonandoff
(tentimessweepexpansion).
©DELAYTIMEMULT
AdjuststhestarttimeoftheB sweeptosomedelaytime
afterthestartofA sweep.Thedelaytimemaybesetto
valuesbetween0.2and10timesthesettingoftheA
SWEEPTIME/DIVcontrol.
(§)HOLDOFF/PUSHNOR/PULLTRACESEPARATION
HOLDOFF:Rotationadjustsholdoff(triggerinhibit
periodbeyondsweepduration)whenex-
tinguishedthePUSHNORindicator© .
Counterclockwiserotationincreasesholdoff
periodfromNORMtomaxmorethanten
times.
TRACE
SEPARATION:AdjustsverticalseparationbetweenA
sweepandB sweep(controlhaseffectonly
intheALTofHORIZ.DISPLAY).
Clockwiserotationincreasesseparation;B
sweepmovesdownwithrespecttoA
sweepupto4 divisions.
Inthiscase,HOLDOFFcontrolhasnoef-
fect.
PUSHNOR:Push-pushswitch;holdoffselectorswitch;
oncepushedin,PUSHNORindicatorlighs
up.
Pushedinagain,PUSHNORindicatorex-
tinguishes,andisholdoffadjustmentis
available.
©PUSHNORIndicator
NORlampindicatesthatholdoffcannotbeadjusted.
(§)Z AXISINPUTJack
Externalintensitymodulationinput;TTLcompatible.
Positivevoltageincreasesbrightness,negativevoltage
decreasesbrightness.
(§)CH1OUTPUTJack
CH1verticaloutputsignalconnector.
ACcoupledoutputconnector.
Thisconnectorisusedtomeasurethefrequencyby con-
nectingthefrequencycounter.Whenthefrequency
countermeasuresfrequencyat1 mV/div,theequipment
maynotindicatethecorrectindicationofthefrequency
duetothenoiseeffect.ThensettheVOLTS/DIVtoother
rangeorrotatetheVARIABLEcontrol(3)toexceptCAL
positionForstableoperation,donotconnectCH1OUTPUT
tochannel2 inputascascadedoperation.
<®GATEOUTPUTJack
OutputconnectorofsquarewavetriggeredwithA sweep.
@SWEEPOUTPUTJack
Outputconnectorofsaw-toothwavetriggerdwithA
sweep.
@FuseHolder
Containsthelinefuse.Verifythattheproperfuseisinstall-
edwhenreplacingthelinefuse.
100V,120V 2 A
220V,240V 1 A
13
Fig. 5

OPERATION
INITIALSTARTINGPROCEDURE
Untilyoufamiliarizeyourselfwiththeuseofallcontrols,
thefollowingproceduremaybeusedtostandarizethein-
itialsettingofcontrolsasa referencepointandtoobtain
traceontheCRTinpreparationforwaveformobservation.
Whenusingtheprobe(s),refertoprobe'sinstructionsand
"PROBECOMPENSATION"listedinAPPLICATIONofthis
manual.
Fig. 6
(1)NORMALSWEEPDISPLAYOPERATION
1. TurnthePOWERswitch(Q)clockwise— thepower
supplywillbeturnedonandthepilotlampwilllight.
Setthesemodesasfollows;
VerticalMODE(@): CH1
TRIGMODE@ : AUTO
2. ThetracewillappearinthecenteroftheCRTdisplay
andcanbeadjustedbytheCH10 POSITION<£>and
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(9)jackandtheverticalMODEsettoCH2issimilar
totheaboveprocedure.
IntheADDmode,thealgebraicsumofCH1+CH2is
displayed. IftheCH2INV(Q)switchhasbeenengag-
ed, thealgebraicdifferenceofthetwowaveforms,
CH1— CH2isdisplayed.Ifbothchannelsaresettothe
sameVOLTS/DIV,thesumordifferencecanberead
directlyinVOLTS/DIVfromtheCRT.
TheDUALmodeallowssimultaneousobservationof
channel1 andchannel2 waveforms.TheTRImode
allowssimultaneousviewingofchannel1 thruchannel
3inputsignals.IntheTRImode,eithertheCHOPorALT
modeappliesandmustbeselected.
IntheCHOPmode,thesweepischoppedatanapprox-
imate250kHzrateandswitchedbetweenCH1and
CH2. NotethatintheCHOPmodeofoperationwiththe
SOURCEswitchsettoV.MODE,thetriggersource
becomesthechoppingsignalitself,makingwaveform
observationimpossible.UseALTmodeinsteadinsuch
cases,orselecta triggerSOURCEofCH1,CH2orCH3.
Ifnotraceisobtainable,refertothefollowingTRIGGER-
INGprocedures.
4. AftersettingtheSOURCEswitch,adjustthe
LEVEL/SLOPEcontrol@).Thedisplayonthescreen
willprobablybeunsynchronized.RefertoTRIGGERING
procedurebelowforadjustingsynchronizationand
sweepspeedtoobtaina stabledisplayshowingthe
desirednumberofwaveform.
TRIGGERING
Theinputsignalmustbeproperlytriggeredforstable
waveformobservation.TRIGGERINGispossibleusingthe
inputsignalINTernallytocreatea triggerorwithanEXTer-
nallyprovidedsignaloftimingrelationshiptotheobserved
signal, applyingsucha signaltotheEXTTRIGINPUTjack.
TheSOURCEswitchselectstheinputsignalthatistobe
usedtotriggerthesweep,withINTsyncpossibilities
(V.MODE,CH1,CH2,LINE)andCH3/EXTsyncpossibility.
14

*InternalSync
WhentheSOURCEselectionisinINT(V.MODE,CH1,
CH2, LINE),theinputsignalisconnectedtotheinternal
triggercircuit.Inthisposition,a partoftheinputsignalfed
totheINPUT(5)or(9)jackisappliedfromthevertical
amplifiertothetriggercircuittocausethetriggersignal
triggeredwiththeinputsignaltodrivethesweep.
WhentheV.MODEpositionisselected,thetriggersource
isdependentupontheverticalMODEselection.
WhentheverticalMODEswitchisselectedinALTand
DUAL,thetriggersourcealternatesbetweenchannel1 and
channel2 witheachsweep.
WhentheverticalMODEswitchisselectedinALTandTRI,
thetriggersourcealternateschannel1 thruchannel3 with
eachsweep.
Thisisconvenientforcheckingamplitudes,waveshape,or
waveformperiodmeasurementsandevenpermits
simultaneousobservationoftwowaveformswhicharenot
relatedinfrequencyorperiod.However,thissettingisnot
suitableforphaseortimingcomparisonmeasurements.For
suchmeasurements,twoorthreetracesmustbetriggered
bythesamesyncsignal.
WhentheSOURCEselectionisinCH1,theinputsignalat
thechannel1 INPUT(5)jackbecomestriggerregardlessof
thepositionofverticalMODE.WhentheSOURCEselection
isinCH2,theinputsignalatthechannel2 INPUT(9)jack
becomestriggerregardlessofthepositionofvertical
MODE. IftheSOURCEswitchissettotheLINEposition,
triggeringisderivedfromtheinputlinevoltage(50/60Hz).
Thisisusefulmeasurementsthatarerelatedtolinefre-
quency.
Triggersignal
(Gatesignal)
CH2(Outputsignal
fromamplifier,etc.)
Fig. 7
•Coupling
TheCOUPLINGswitchselectsthecouplingmodeofthe
triggersignaltothetriggercircuitaccordingtothetypeof
triggersignal(DC,AC,signalsuperimposedondc,signal
withhighfrequencynoise.).
AC:
Mostcommonlyusedposition;permitstriggeringfrom
10Hztoover60MHz(forCS-1040,40MHz).Blocksdc
componentofsynctriggersignal.
HFrej.:
Attenuatestriggersignalabove100kHz.Usefultoreduce
high-frequencynoise,andpermitstriggeringfromthe
modulationenvelopeofanamplitudemodulatedrfsignal.
*ExternalSync
WhentheSOURCEselectionisinEXT/CH3,theinput
signalattheEXTTRIGINPUT@>jackbecomesthe trig-
ger.Thissignalmusthavea timeorfrequencyrelationship
tothesignalbeingobservedtosynchronizethedisplay.Ex-
ternalsyncispreferedforwaveformobservationinmany
applications.Forexample,Fig.7 showsthatthesweepcir-
cuitisdrivenbythegatesignalwhenthegatesignalinthe
burstsignalisappliedtotheEXTTRIGINPUTjack.Fig.7
alsoshowstheinput/outputsignals,wheretheburstsignal
generatedfromthesignalisappliedtotheinstrumentunder
test.Thus,accuratetriggeringcanbeachievedwithout
regardtotheinputsignalfedtotheINPUT(5)or(9)jackso
thatnofurthertriggeringisrequiredevenwhentheinput
signalisvaried.WhentheverticalMODEissettoTRI,
triple-tracedisplayisprovidedandthesignalappliedtoEX-
T/CHSistobeusedtotriggerthesweep,withINTernal
syncpossibility.
DC:
Permitstriggeringfromdctoover60MHz(forCS-1040,
40MHz).Couplesdccomponentofsynctriggersignal.
Usefulfortriggeringfromverylowfrequencysignals
(below10Hz)orrampwaveformswithslowrepeatingdc.
Waveformwithhighfrequencynoise
TriggersignalbyHFrejection
Fig. 8
15
CH1(Inputsignalto
amplifier,etc.)

LEVEL
•AutoTrigger
WhentheTRIGMODE® selectionisinAUTO,the
sweepcircuitbecomesfree-runningaslongasthereisno
triggersignal,permittinga checkofGNDlevel.Whena trig-
gersignalispresent,thetriggerpointcanbedeterminedby
theLEVELcontrolforobservationasinthenormaltrigger
signal. Whenthetriggerlevelexceedsthetriggersignal,
thetriggercircuitalsobecomesfree-runningwherethe
waveformstartsrunning.WhentheTRIGMODEissetto
NORMand/or,whenthetriggersignalisabsentorthe trig-
geringlevelexceedsthesignalthereisnosweep.
*Fix
WhentheTRIGMODE© issettoFIX,triggeringis
alwayseffectedinthecenterofthewaveform,eliminating
theneedforadjustingthetriggeringlevel.AsshowninFig.
10-(a)or(b),whentheTRIGMODEissettoNORMandthe
triggeringlevelisadjustedtoeithersideofthesignal,the
triggerpointisdeviatedastheinputsignalbecomessmall
which, in turn, stopsthesweepoperation.Bysettingthe
TRIGMODEtoFIX,thetriggeringlevelisautomaticallyad-
justedtotheapproximatecenterofthewaveformandthe
signalissynchronizedregardlessofthepositionofLEVEL
controlasshowninFig.10-(c).
Whentheinputsignalissuddenlychangedfroma square
waveformtoa pulsewaveform,thetriggerpointisshifted
extremelytowardthe" —"sideofthewaveformunless
thetriggeringlevelisreadjustedasshowninFig.11-(a).
SeeFig11-(a)-(2).Also,ifthetriggerpointhasbeensetto
the" —"ofsquarewave(Fig11-(b)-(1))andtheinput
signalischangedtoa plusesignal,thetriggerpointis
deviatedandthesweepstops.Whenthishappens,setthe
TRIGMODEtoFIXandthetriggeringiseffectedintheap-
proximatecenterofthewaveform,makingitpossibleto
observea stabilizedwaveform.(Fig11-(c))
'NORM"
Fig. 10
LEVELcontrol
Inputsignalchanged
intoa pulsewaveform.
Readjustlevel
(a)Whenthetriggerlevelisset
aroundthecenterofthewaveform.
Samelevelas(1)
Triggeringwithout
settinglevel
(c)Modeswitchsetto "FIX".
Fig. 11
16
*TriggeringLevel
TriggerpointonwaveformisadjustedbytheLEVEL/PUSH
SLOPE@)control.Fig.9 showstherelationshipbetween
theSLOPEandLEVELofthetriggerpoint.Triggeringlevel
canbeadjustedasnecessary.
SLOPE"-"RANGE
SLOPE" + " RANGE
Triggerpoint
Trigger
point
Trigger
point
"FIX"
Trigger
point
Triggerpoint
Sweepstopswithno trigger.
Highestlevel
(b)Whenthetriggerlevelissetto
the" — " sideofthewaveform
(Modeswitchsetto"NORM")
Fig. 9

(2)MAGNIFIEDSWEEPOPERATION
Sincemerelyshorteningthesweeptimetomagnifya por-
tionofanobservedwaveformcanresultinthedesiredpor-
tiondisappearingoffthescreen,suchmagnifieddisplay
shouldbeperformedusingtheMAGNIFIEDSWEEP.
UsingthePOSITIONcontrol,adjustthedesiredportion
ofwaveformtotheCRT.PushthePUSHx 10MAGcontrol
tomagnifythedisplay10timesandx 10MAGindicator
lights. ForthistypeofdisplaythesweeptimeistheSWEEP
TIME/DIVsettingdividedby10.
(3)DELAYEDSWEEPOPERATION
DelayedsweepoperationisachievedbyuseofboththeA
sweepandtheB sweep.
Procedure:
1. FirstsettheHORIZDISPLAYtoA andadjustfora nor-
malwaveformdisplay.
2. SettheB sweepintheSTARTSAFTERDELAYmode.
SettheHORIZDISPLAYtotheINTmodeandtheB
sweepwillappearasanintensifiedportionoftheA
sweep.Thelengthoftheintensifiedportionisadjusted
bytheB SWEEPTIME/DIVcontrol.(Fig.12)
3.Shifttheintensifiedportionofwaveform(sectiontobe
magnified)alongtheA sweepbyuseoftheDELAY
TIMEMULT© .
4. SettheHORIZDISPLAYtoB todisplaytheINTinten-
sifiedportionasa magnifiedB sweep.(Fig.13)
DelayTime(magnifiedportion)= DELAYTIMEMULT
settingx A SWEEPTIME/DIVsetting.
5.ForSTARTSAFTERDELAYoperation,apparentjitterin-
creasesasmagnificationincreases.Toobtaina jitter
freedisplaysettheB MODE@ toTRIG.Inthis "Trig-
gerableAfterDelay"modetheA triggersignalselected
bytheSOURCEswitch@ becomestheB trigger
source.
NotethatforthistypeofoperationboththeDELAYTIME
MULTandTRIGLEVELaffectthestartoftheB sweepso
thatthedelaytimeisusedasa referencepoint.(Fig.14)
(4) ALTERNATINGSWEEPOPERATION
AsweepandB delayedsweepareusableinanalternating
fashionmakingitpossibletoobserveboththenormaland
magnifiedwaveformsimultaneously.
Procedure:
1. SettheHORIZDISPLAYtoA andadjustfora normal
waveformdisplay.
2. SettheB MODEtoSTARTSAFTERDELAYandsetthe
HORIZDISPLAYtoALT.AdjustTRACESEPATATION
(f§)foreasyobservationofboththeA andB traces.
Theuppertraceisthenon-magnifiedportionofthe
waveformwiththemagnifiedportionsuper-imposedas
anintensifiedsection.Thelowerwaveformistheinten-
sifiedportiondisplayedmagnified.
3.TheDELAYTIMEMULTcanbeusedtocontinuously
slidethemagnifiedportionofthewaveformacrossthe
Asweepperiodtoallowmagnificationofpreciselythe
desiredportionofwaveform.
4. Apparentdisplayjitterincreaseswithincreased
magnificationasisthecasewithdelayedsweep
discussedabove.
SettheB MODEtoTRIGtoobtaina jitterfreedisplaythe
sameasdelayedsweepoperation.
Fig. 12
Fig. 14
17
BSweep
Fig. 13Magnifiedviewofintensifiedzoneabove
ASweep Intensifiedzonetobemagnified
ASweep ,Intensifiedzonetobemagnified
BSweep

(5) X-Y OPERATION
Forsomemeasurements, an externalhorizontaldeflection
signal is required.This is alsoreferred toasanX-Y
measurement,where theY inputprovidesverticaldeflec-
tionand X inputprovideshorizontaldeflection.
X-Yoperationpermits the oscilloscope to performmany
types of measurements not possiblewithconventional
sweepoperation. The CRTdisplaybecomes an electronic
graph of twoinstantaneousvoltages.Thedisplaymaybe a
directcomparison oftwo voltagessuch as duringphase
measurement, or frequencymeasurementwithLissajous
waveforms.
Touse an externalhorizontalinput,usethefollowingpro-
cedure;
1. SettheHORIZDISPLAYswitch to X-Ytheposition.
2. Use the channel 1 probe forthe verticalinputand the
channel 2 probe for thehorizontalinput.
3.Adjusttheamount of horizontaldeflectionwiththeCH2
VOLTS/DIVandVARIABLEcontrols.
4. TheCH2 (vertical)POSITION (Q) control now serves
as the horizontalpositioncontrol, andthe POSI-
TIONcontrol is disabled.
5. All synccontrolsaredisconnectedandhave no effect.
(6) VIDEOSIGNALOBSERVATION
TheVIDEOFRAME/LINEswitchpermitsselection of ver-
tical or horizontalsyncpulse for sweeptriggeringwhen
viewingcompositevideowaveforms. Inthe LINEposition,
horizontalsyncpulses are selected as triggers to permit
viewing of horizontalline of video. In theFRAMEposition,
verticalsyncpulsesareselectedastriggers to permitview-
ing of verticalfieldsandframes of video.Whenobserving
thevideowaveforms,stabledisplay is obtained onthe
screenregardlesstheTRIGLEVELcontrol.
Atmostpoints of measurement, a compositevideosignal
is of the (—) polarity,thatis, the syncpulsesarenegative
andthevideo is positive.Inthiscase,use " —"SLOPE.
Ifthewaveform is taken ata circuitpointwherethevideo
waveform is inverted,thesyncpulsesarepositiveand the
video is negative. In thiscase,use " + " SLOPE.
(7) SINGLESWEEPOPERATION
Thismode of display is useful for looking atnon-
synchronous or onetimeevents.
Procedure:
1. SettheTRIGMODE © to eitherAUTO or NORM.App-
ly a signal of approximatelythesameamplitudeandfre-
quencyasthesignalthatis to beobservedasthetrigger
signalandsetthetriggerlevel.
2. Set TRIGMODE to RESET - observethat the READY
indicatorLEDlights to indicatetheresetcondition.This
LEDgoes out whenthe A sweepperiod is completed.
3.Aftertheaboveset-up is completed the scope is ready
tooperate in theSINGLEsweepmode of operationafter
resetting the instrumentusing the RESETswitch.Input
of the triggersignalresults in oneandonlyonesweep
andREADYindicatorLEDgoesout.
18
CAUTION:
WiththeHORIZDISPLAYset to ALTthesimultaneous
observation of the A sweepand B sweepwaveforms
atSINGLEsweepmode isnot possible.Also for
DUAL orTRI operationsimultaneousobservation is
notpossibleusing ALT mode. Setthe unit tothe
CHOPmodeinthiscase.

APPLICATIONS
PROBECOMPENSATION
Ifaccuratemeasurements aretobe made, the effect ofthe
probebeingusedmust be properlyadjustedoutput ofthe
measurementsystemusing the internalcalibrationsignal or
someothersquarewavesource.
1. Connectprobe to INPUTjack.Connectgroundclip of
probe of oscilloscopegroundterminal and touch tipof
probe to PROBE ADJ terminal.
2. Selectsingletraceoperation of channel 1, thenchannel
2, for step 3 and4.
ForCS-1060, setthe probe for10:1 attenuation
(1 Ox position) and VOLTS/DIV to 10mV/div andfor
CS-1040, setthe probe for10:1 attenuation (10x
position).
3. Set oscilloscopecontrols to display 3 or4 cycles of
PROBE ADJ squarewave at5 or6 divisionsamplitude.
4. Adjustcompensationtrimmer on probe for optimum
squarewavewaveshape(minimumovershoot,rounding
off, and tilt).
Correct
compensation
Over
compensation
Insufficient
compensation
Fig. 15
TRACEROTATIONCOMPENSATION
Rotationfrom a horizontaltraceposition canbethe cause
ofmeasurementerrors.
Adjust the controls fora singledisplay. Setthe AC-GND-DC
switch toGNDand TRIGMODE to AUTO.Adjust the•
POSITIONcontrolsuchthat the trace is over the center
horizontalgraticuleline. Ifthe traceappears tobe rotated
fromhorizontal,align it with the centergraticulelineusing
theTRACEROTATIONcontrollocated onthe frontpanel.
DCVOLTAGEMEASUREMENTS
Thisproceduredescribes the measurementprocedure for
waveformsincluding theDC component.
Procedure:
1. Connect the signal tobe measured tothe INPUT
jack.Set the verticalMODE tothe channel tobe used.
Set the VOLTS/DIV and SWEEPTIME/DIVswitch toob-
tain a normaldisplay ofthe waveform tobe measured.
Set the VARIABLEcontrol toCAL position.
2. Setthe TRIGMODE to AUTO and AC-GND-DC tothe
GNDposition,whichestablished the zerovoltreference.
Using the• POSITIONcontrol,adjust the traceposition
to the desiredreferencelevelposition,makingsure not
todisturbthissettingoncemade.
3. Setthe AC-GND-DCswitch totheDC position to
observe the inputwaveform,including itsDC compo-
nent. Ifan appropriatereferencelevel or VOLTS/DIV
setting wasnot made, the waveform maynotbe visible
on theCRT screen at thispoint. Ifso, resetVOLTS/DIV
and/or the• POSITIONcontrol.
4. Usethe<>• POSITIONcontrol to bring the portion of
thewaveform tobe measured tothe centervertical
graduationline oftheCRT screen.
5.Measure the verticaldistancefrom the referencelevel to
thepoint tobe measured, (the referencelevel canbe
rechecked by setting the AC-GND-DCswitchagain to
GND).
Multiply the distancemeasuredabove bythe
VOLTS/DIVsetting andthe probeattenuationratio as
well. Voltagesabove and below the referencelevel are
positive and negativevaluesrespectively.
Using the formula:
DClevel = Verticaldistance in divisions x (VOLTS/DIVset-
ting) x (probeattenuationratio).
[EXAMPLE]
For the example, the pointbeingmeasured is3.8 divisions
from the referencelevel(groundpotential).
If the VOLTS/DIV wassetto0.2V anda 10:1 probe was
used. (See Fig. 16)
Substituting the givenvalues:
DClevel = 3.8 (div) x 0.2(V) x 10 = 7.6V
19
Measuringpointadjusted tothe center
verticalscale by POSITION
Verticaldistance
Groundpotentialadjusted by
^POSITION(referenceline)
Fig. 16

MEASUREMENT OFTHE VOLTAGEBETWEEN TWO
POINTS ONA WAVEFORM
Thistechnique canbe used to measurepeak-to-peak
voltages.
Procedure:
1. Apply the signal tobe measured tothe INPUTjack. Set
theverticalMODE tothe channel tobe used. Setthe
AC-GND-DC toAC, adjustingVOLTS/DIV and SWEEP
TIME/DIV fora normaldisplay. Setthe VARIABLE con-
trol toCAL position.
2. Using thew 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
POSITION.
• Points tobe measured
[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.(SeeFig. 17)
ELIMINATION OF UNDESIREDSIGNAL
COMPONENTS
The ADD feature canbe convenientlyused to cancel out
theeffect ofan undesiredsignalcomponentwhich maybe
superimposed onthe signal you wish to observe.(See Fig.
18)
Procedure:
1. Apply the signalcontaining an undesiredcomponent to
theCH1INPUTjackand the undesiredsignalitselfalone
to theCH2 INPUTjack.
2. Setthe verticalMODE to DUAL(CHOP)andSOURCE to
CH2. VerifythatCH2represents the unwantedsignal in
reversepolarity. If necessaryreversepolarity by setting
CH2 to INV.
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)
Undesiredcomponentsignal
Substituting the givenvalue:
Voltagebetween two points = 4.4(div) x 0.2(V) x 10 = 8.8V
20
Vertical
distance
betweentwopoints
Fig. 17
Adjust tothe horizontal
scalewith A POSITION.