Kenwood CS-1065 User manual

60MHz TRIPLETRACEOSCILLOSCOPE
CS-1 065
40MHz TRIPLETRACEOSCILLOSCOPE
CS-1 045
INSTRUCTION MANUAL

SAFETY
Symbolin This Manual
a Thissymbolindicateswhereapplicablecautionaryor
^otherinformationistobefound.
PowerSource
This equipmentoperates from a powersource that does
notapplymorethan250V rmsbetweenthesupplycon-
ductorsorbetweeneithersupplyconductorandground.A
protectivegroundconnectionbywayofthegroundingcon-
ductorinthepowercordisessentialforsafeoperation.
GroundingtheProduct
This equipmentisgroundedthroughthegroundingconduc-
torofthepowercord.Toavoidelectricalshock,plugthe
powercord into a properlywiredreceptaclebeforeconnec-
ting totheequipmentinputor output terminals.
Use theProperPower Cord
Use onlythepowercordandconnectorspecifiedforyour
product.
Use theProper Fuse
Toavoid fire hazard,usea fuseofthecorrecttype.
DonotOperateinExplosiveAtmospheres
Toavoidexplosion,donotoperatethisproductinanex-
plosiveatmosphere.
DonotRemoveCoverorPanel
Toavoidpersonalinjury,donotremovethecoverorpanel.
Referservicingtoqualifiedpersonnel.
Voltage Conversion
Ifthepowersourceisnotappliedtoyourproduct,contact
yourdealer.Toavoidelectricalshock,donot perform the
voltageconversion.
SAFETY2
FEATURES3
SPECIFICATIONS4
PREPARATION FOBUSE7
CONTROLS ANDINDICATORS9
FRONT PANEL9
REAR PANEL13
OPERATION 14
INITIALSTARTING PROCEDURE 14
{1) NORMAL SWEEP DISPLAYOPERATION14
(2)MAGNIFIED SWEEP OPERATION17
(3) DELAYED SWEEP OPERATION17
(4)ALTERNATING SWEEP OPERATION17
(5)X-YOPERATION18
(6)VIDEOSIGNAL OBSERVATION 18
(7) SINGLE SWEEP OPERATION18
APPLICATION19
PROBE COMPENSATION19
TRACE ROTATIONCOMPENSATION19
DC VOLTAGE MEASUREMENTS19
MEASUREMENTS OFTHEVOLTAGE
BETWEEN TWOPOINTSONA WAVEFORM20
ELIMINATIONOFUNDESIREDSIGNAL
COMPONENTS20
TIMEMEASUREMENTS21
FREQUENCY MEASUREMENTS21
Note: Thisinstructionmanualisdescribedfortwomodels.
Referto item appliedtoyourproduct.
2
CONTENTS
PULSE WIDTH MEASUREMENTS22
PULSE RISE TIMEANDFALLTIME
MEASUREMENTS 22
TIME DIFFERENCE MEASUREMENTS23
PHASE DIFFERENCE MEASUREMENTS24
RELATIVE MEASUREMENTS24
PULSE JITTER MEASUREMENT26
SWEEP MULTIPLICATION(MAGNIFICATION)26
DELAYED SWEEP TIMEMEASUREMENT27
PULSE WIDTH MEASUREMENTSUSING
DELAYED SWEEP 27
FREQUENCY MEASUREMENTSUSING
DELAYED SWEEP 28
PULSE REPETITIONTIME29
USING DELAYED SWEEP FORMEASUREMENTSOF
RISETIMES AND FALLTIMES 29
TIME DIFFERENCE MEASUREMENTSUSING
DELAYED SWEEP 29
TRIPLE-TRACE APPLICATIONS30
OBSERVATION OFTHESTARTPORTIONOF
THE IRREGULAR WAVEFORM30
X-Y APPLICATION31
ACCESSORIES32
MAINTENANCE33

FEATURES
1. Verticalaxishashighsensitivityandwidebandwidth
andespeciallycoversfullyspecifiedfrequency
response at5mV/divforallmodels.
CS-1065 ;
1 mV/div,2mV/div: DCto20MHz,-3dB
5mV/div: DCto60MHz,-3dB
CS-1045 ;
1 mV/div,2mV/div: DCto 1 5 MHz,-3dB
5mV/div: DCto40MHz,-3dB
2. Verticalsensitivityrangeisselectable from 1 mV/divto
5V/div with rotaryswitchcontinuously.
3. Timebasepermitsthehighsweep speed.
CS-1065; 5nsec/div(x10MAG)
CS-1045; 10nsec/div(x10MAG)
4.Verticalsensitivityerrorandsweeprateerrorare
±3% andaccuratemeasurementsareprovided.
5.The 1 50mmrectangular,domedmeshtypeCRT with
internalgraticuleprovideshighbrightnessandac-
curatemeasurements,freeofparallaxerror.
6.Forconvenienceinmakingrise time measurements,
the0%,10%,90%and100%levelsaremarkedon
thegraticule scale oftheCRT.
7.Thebuilt-inAuto-focuscircuitkeepsthewaveformsin
clear focusautomaticallyregardlessoftheINTENSITY
controlsetting.
8.Tracerotationiselectricallyadjustable from the front
panel.
9.By SCALE ILLUMcontrol,thewaveformis easy
observed indarkenedareaandthephotographofthe
waveformis easy provideda singlephotographofthe
waveformsuperimposedonthegraticule scale.
10.Delaysweepmodesareavailableinnotonly Con-
tinuousDelay (AFTERDELAY) andtriggerDelay
(TRIG) butalsobothA andB zeroDelay (DELAY = 0)
allowingtoobservethewholeextentofanycom-
plicatedpulsetrain with magnifictionas necessary.
11. Singlesweeppermitsviewingandphotographingone-
time events.
12. TRIPLE modepresentsa triple-trace oscilloscope; even
six tracesofwaveformsmaybeobservedsimultane-
ously with HORIZMODEsetatALT.
13. Thedelaylinepermitsviewingofleadingedgeofhigh-
frequency,fastrisetime pulses.
14.SelectableAUTO FREE RUNfunctionprovidessweep
withouttriggerinputsignal.
15. TheFRAME-LINEswitchprovidesselectionof sync
pulse forsweeptriggering from smallamplitudeto
largeamplitudewithoutadjustingwhenviewingcom-
posite videowaveforms.
16.Verticalmodeautomaticallyprovidesthetriggersignal
with TRIG SOURCE and VERT MODE switches.
17.X-Yoperationis easy providedbyone-touche.
18.Provides with CH1OUTPUTterminaltomonitorinput
signal ofCH1.
19. DELAY TIMEMULTpermitstheaccurate time
measurements with thedial scale.

SPECIFICATIONS
CS-1065 CS-1045
CRT
150TTM31
Rectangular, with internalgraticule 150TTM31
Rectangular, with internalgraticule
Acceleration Voltage 12kV
Display Area 8x10div(1div= 10mm)
VERTICAL AXIS CH1 andCH2
Sensitivity
1 mV/divto5 V/div,±3%
Attenuator 12
steps, 1 mV/divto5 V/divin 1 -2-5 sequence.
Vernier controlforfullyadjustablesensitivitybetween steps.
InputImpedance 1 Mfi±2%,approx.20pF
Frequency Response
5mV/divto5V/div DC; DCto60MHz,-3dB
AC; 5 Hzto60MHz,-3dB
DC; DCto40MHz,-3dB
AC; 5 Hz,to40MHz,-3dB
1 mV/div,2 mV/div DC; DCto20MHz,-3dB
AC; 5 Hzto20MHz,-3dB
DC; DCto 1 5 MHz,-3dB
AC; 5 Hzto 1 5 MHz,-3dB
Rise Time 5.8
nsec or less (5mV/divto5 V/div)
17.5 nsec or less (1mV/div,2 mV/div) 8.8
nsec or less (5mV/divto5 V/div)
23.4 nsec or less (1mV/div,2 mV/div)
Signal DelayTime Approx.20
nsec ontheCRT screen
Crosstalk
—40dBminimum
OperatingModes
CH1; singletrace
CH2; singletrace
DUAL; CH1andCH2,dualtrace
ADD; CH1+CH2addedasa singletrace
TRIPLE; CH1,CH2andCH3tripletrace
Chop Frequency Approx.250kHz
Channel Polarity Normalorinverted,channel2 onlyinverted
/\ Maximum Inputvoltage 500Vp-por250V (DC+ ACpeak)
Non-Distorted Maximum Amplitude
More than8 div(DCto60MHz)
More than8 div(DCto40MHz)
VERTICAL AXIS
CH3
Sensitivity
0.5V/div±3%
Input Resistance
1 Mi)±2%
InputCapacitance Approx20pF
Frequency Response
DC: DCto60MHz,-3dB
DC: DCto40MHz,-3dB
Rise Time 5.8
nsec or less 8.8 nsec or less
Signal DelayTime
Same asCH1andCH2
$\ Maximum InputVoltage 50V (DC+ ACpeak)
HORIZONTAL AXIS InputthruCH2,x 10MAGnotincluded
OperatingModes
With H0RIZMODE switch, X-Yoperationisselectable
CH1; Y axis
CH2; X axis
Sensitivity
Same asvertical axis (CH2)
4

5
CS-1065 CS-1045
InputImpedance
Same as verticalaxis (CH2)
Frequency Response
DC; DC to 1 MHz,-3dB
AC; 5 Hzto1 MHz,-3dB
X-Y PhaseDifference 3°
or less at100kHz
A Maximum InputVoltage
Same as verticalaxis (CH2)
SWEEP
Type
A; A sweep
ALT; A sweep(intensified for duration ofB sweep) andB sweep(delayed
sweep) alternating
B; Delayedsweep
X-Y; X-Y oscilloscope
Sweep Time A
B
0.05jts/div to0.5 s/div, ±3%in22
ranges, in 1 -2-5sequence.
Verniercontrolprovidesfullyadjustable
sweep time between steps.
0.1ns/dw to0.5 s/div, ±3%in21
ranges, in1-2-5 sequence.
Verniercontrolprovidesfullyadjustable
sweep time between steps.
Sweep Time A
B
0.05/is/div to50 ms/div, ±3%in19
ranges, in 1 -2-5sequence. 0.1/is/div
to50 ms/div, ±3%in18
ranges, in 1 -2-5sequence.
Sweep Magnification x10
(ten times) ±5%(±8%on,
0.05jis/div to0.2 /ts/divrange) x
10(ten times) ±5%(±8%on,
0.1^s/div to0.2 /ts/divrange)
Linearity
±3% all ranges,
±5% on0.05 /is/div to0.2 /^s/div
range atx 10MAG.
±3% all ranges,
±5% on0.1 ^s/div to0.2 /js/divrange
at x 10 MAG.
Holdoff
Continuously variable from NORM to morethan ten times (MAX)
Trace Separation
B sweepcan be separated from A sweep upto4 divisionsdownward,continuous-
lyadjustable.
Delay Method
Continuous delay (AFTER DELAY), Triggerdelay(TRIG),Triggerdelay (TV LINE),
Zerodelay (DELAY = 0)
DelayTime From
500 nsec to 0.5sec.Availabledelay time is0.2to10 times theA sweep
time setting,continuouslyadjustable.
Timedifferencemeasurement
accuracy
±2%
DelayJitter 1 /20000 often times ofA sweep time setting
TRIGGERING
Triggermode AUTO, NORM, FIX, SINGLE-RESET
Triggersource
VERT
MODE;Triggerselected by verticalMODEswitch.
CH1; Triggered by CH1signal
CH2; Triggered byCH2 signal
CH3/EXT; Triggered byCH3 signal
LINE; Triggered by linefrequency
Coupling AC, HFrej,DC, TV FRAME, TV LINE
Triggersensitivity FREQ.RANGE INT EXT FREQ.RANGE INT EXT
DC DC to50MHz
DC to60MHz
1 div
1.5 div
0.5 Vp-p
0.8 Vp-p
DC to40MHz 1 div 0.5Vp-p
AC Same asforDCbut increasedminimumlevelbelow 10Hz
AC, HFrej
Increased minimumlevelbelow 10Hzand above 20kHz
TV
FRAME, LINE
1 div 0.5 Vp-p FRAME, LINE
1 div 0.5 Vp-p
AUTO: Same as abovespecifications for above 50Hz.
FIX: Same as abovespecifications for above 50Hz.

CS-1065 CS-1045
CALIBRATION VOLTAGE
1 V ±3%,squarewave,positivepolarity,approx.1 kHz
INTENSITY MODULATION
Sensitivity
+ 5 V.Negativevoltageincreasesbrightness,positivevoltagedecreases
brightness.
InputImpedance Approx.10kQ
Usable FrequencyRange
DC to5 MHz
DC to3.5MHz
/t\ Maximum InputVoltage 50V (DC+ ACpeak)
VERTICAL AXISSIGNALOUTPUT CH1OUTPUT
OutputVoltage Approx.50mV/divinto500
OutputImpedance Approx.50Q
Frequency Response
5 mV/divto5 V/div 100Hzto60MHz,-3dBinto500 100Hzto40MHz,-3dBinto500
1 mV/div,2 mV/div 100Hzto20MHz,-3dBinto50Q 100Hzto15MHz,-3dBinto500
POWER REQUIREMENT
PowerSupply 100V/120V/220V/240VAC±10%
Line Frequency
50/60 Hz
PowerConsumption Approx.61W
DIMENSIONS (WxHxD)
319(359) x 132(145) x 380(455) mm
() dimensionsincludeprotrusion from basic outlinedimensions
WEIGHT Approx.9.2kg
ENVIRONMENTAL
Within Specifications 10°Cto35°C,85%max.relativehumidity
Full Operation 0°Cto40°C,85%max.relativehumidity
ACCESSORIES SUPPLIED
Probe
PC-39 x 2
PC-30X2
Spare Fuse
0.7Ax2
1 Ax2
InstructionManual
1
*Circuitandratingaresubjecttochangewithoutnoticeduetodevelopmentsintechnology.
6

PREPARATION FORUSE
SAFETY
Beforeconnectingtheinstrumenttothepower source,
carefullyreadthefollowinginformation,thenverify that
thepowercordandpowerlinefuseareonesforyourpower
line.
The instrument'srearpanelhasa fuseholderonthe left of
theACinletterminal(thefuseholeralso serves asa
voltageselector).Thevalueunderthetriangle• marked
ontheholderindicatesthelinevoltagesetfortheinstru-
ment.Ifthepowercordisnotapplied with thecorrect
voltage,thereisa danger from electric shock.
Line voltage
This instrumentoperatesusingac-powerinputvoltages
that 100/120/220/240 V atfrequencies from 50Hzto
60Hz.
Power cord
The groundwireofthe3-wireacpowerplugplacesthe
chassis andhousingofthe oscilloscope atearthground.Do
not attempt todefeatthegroundwireconnectionor float
the oscilloscope; todosomayposea greatsafetyhazard.
The appropriatepowercordissuppliedbyanoption that is
specified whentheinstrumentisordered.
The optionalpowercordsareshownasfollowsinFig.1.
Line fuse
The fuseholderislocatedontherearpanelandcontains
thelinefuse.Verify that theproperfuseisinstalledby
replacing thelinefuse.
5.Alwaysusetheprobeground clips forbestresults.Do
notuseanexternalgroundwireinlieuoftheprobe
ground clips, asundesiredsignalsmaybeintroduced.
6.Operationadjacenttoequipmentwhichproducesstrong
ac magneticfieldsshouldbeavoidedwherepossible.
This includes such devicesaslargepowersupplies,
transformers, electricmotors,etc., that are often found
inanindustrialenvironment.Strongmagneticshields
can exceedthepracticalCRTmagneticshieldinglimits
andresultinterferenceanddistortion.
7.Probecompensationadjustmentmatchestheprobeto
theinputofthe scope. Forbestresults,compensation
ofprobeshouldbeadjustedinitially,thenthesamepro-
bealwaysused with theinputof scope. Probecompen-
sation shouldbereadjustedwhenevera probe from a
different scope is used. (Seepage19)
8.InX-Yoperation,donotpulloutthe PULLx 10MAG
switch. Ifpulledoutit,noisemayappeareonthe
waveform.
EQUIPMENT PROTECTION
1. Neverallowa smallspotofhighbrilliancetoremain sta-
tionaryonthe screen formorethana few seconds. The
screen maybecomepermanentlyburned.A spotwilloc-
cur onlywhenthe scope issetupforX-Yoperationand
nosignalisapplied.Eitherreducetheintensitysothe
spot isbarelyvisible,switchbacktonormalsweep
operationwhennosignalisapplied,orsetupthe scope
forspotblanking.
2. Nevercovertheventilatingholesonthetopofthe
oscilloscope, asthiswillincreasetheoperating
temperatureinsidethe case.
3. Neverapplymorethanthemaximumratingtothe
oscilloscope inputs.
CH1, CH2INPUT jacks: 500Vp-por250V (dc+ ac
peak)
CH3 INPUTjack:50V (dc+ acpeak)
Z axisINPUTjack:50V (dc+ acpeak)
Neverapplyexternalvoltagetotheoscilloscopeoutput
terminals.
4.Alwaysconnecta cable from theearthground(GND)
jack ofthe oscilloscope tothe chassis oftheequipment
undertest. Without thiscaution,theentirecurrentfor
theequipmentundertestmaybedrawnthroughthe
probeclipleadsundercertain circumstances. Such con-
ditionscouldalsoposea safetyhazard,whichthe
groundcablewillprevent.
7

Plug configuration
Power cordandplugtype
Factory installed
instrument fuse
Line cordplugfuse
NorthAmerican
120volt/60Hz
Rated 15amp
(12ampmax;NEC)
1 A,250V
Fast blow
6 x 30mm None
Universal Europe
220volt/50Hz
Rated 16amp
0.63A,250V
T. lag
5 x 20mm None
U.K.
240volt/50Hz
Rated 13amp
0.7A,250V
Fast blow
6 x 30mm
0.7A
Type C
Australian
240volt/50Hz
Rated 10amp
0.7A,250V
Fast blow
6 x 30mm None
NorthAmerican
240volt/60Hz
Rated 15amp
(12ampmax;NEC)
0.7A,250V
Fast blow
6x 30mm None
Switzerland
240volt/50Hz
Rated 10amp
0.7A,250V
Fast blow
6x 30mm None
Fig. 1 PowerInputVoltageConfiguration
8

CONTROLS ANDINDICATORS
FRONT PANEL
(D• POSITION/PULLCHOP
•POSITION:Rotationadjustsverticalpositionof
channel 1 trace.
InX-Yoperation, rotation adjustsver-
ticalpositionofdisplay.
CHOP: ALT/CHOPselectorswitch;pullingthisswitch
causes chopoperation.
ALT operation:Alternatesweepisselected
regardless ofsweep time asdual
trace(CH1andCH2)or triple
trace(CH1,CH2andCH3).
CHOP operation:Chopsweepisselectedregard-
less ofsweep time atapprox-
imately250kHzasdualtrace
(CH1andCH2)or triple trace
(CH1, CH2andCH3).
(2)VOLTS/DIV
Verticalattenuatorforchannel1;providesstepadjustment
ofverticalsensitivity.When VARIABLE control3 issetto
CAL, verticalsensitivityiscalibratedin12steps from
5 V/divto1 mV/div.
For X-Yoperation,thiscontrolprovidesstepadjustmentof
verticalsensitivity.
(D VARIABLEControl
Rotationprovides fine controlofchannel1 vertical sen-
sitivity.Inthe fully clockwise(CAL)position,thevertical
attenuatoriscalibrated.ForX-Yoperation,thiscontrol
serves astheY axisattenuation fine adjustment.
(4)AC-GND-DC
Three-positionleverswitchwhichoperatesasfollows:
AC: Blocksdccomponentofchannel1 inputsignal.
GND:Openssignalpathandgroundsinputtovertical
amplifier.Thisprovidesa zero-signalbaseline,the
positionofwhichcanbeusedasa referencewhen
performingdcmeasurements.
DC: Directinputofacanddccomponentofchannel1
inputsignal.
(5)INPUT Jack
Verticalinputforchannel1 trace.VerticalinputforX-Y
operation.
(6) VOLTS/DIV
Verticalattenuatorforchannel2;providesstepadjustment
ofverticalsensitivity.WhenVARIABLEcontrol7 issetto
CAL, verticalsensitivityiscalibratedin12steps from
5 V/divto1 mV/div.
InX-Yoperation,thiscontrolprovidesstepadjustmentof
horizontalsensitivity.
(7)VARIABLEControl
Rotationprovides fine controlofchannel2 vertical sen-
sitivity.Inthe fully clockwise(CAL)position,thevertical
attenuatoriscalibrated.InX-Yoperation,thiscontrol
becomes the fine horizontalgaincontrol.
(J) AC-GND-DC
Three-positionleverswitchwhichoperatesasfollows:
AC: Blocksdccomponentofchannel2 inputsignal.
GND:Openssignalpathandgroundsinputtovertical
amplifier.Thisprovidesa zero-signalbaseline,the
positionofwhichcanbeusedasa referencewhen
performingdcmeasurements.
DC: Directinputofacanddccomponentofchannel2
inputsignal.
9
Fig. 2

Fig. 3
(9) INPUT Jack
Verticalinputforchannel2 traceinnormalsweepopera-
tion.ExternalhorizontalinputinX-Yoperation.
(B> T POSITION/PULLINV
T POSITION:
Rotationadjustsverticalpositionofchannel2
trace.
INV:Pullingthiscontrolinvertschannel2 signal.
(Hereafter PULL INVisdescribedasCH2INV.)
@ PILOTLamp
Lights whenoscilloscopeisturnedon.
(Q) X GNDterminal/bindingpost.
Earth and chassis ground.
©CAL
Provides approximately1 kHz,1 V peak-to-peaksquare
wavesignal.Thisisusefulforprobecompensationadjust-
ment.
(Q) MODE
Selects the basic operatingmodesoftheoscilloscope.
CH1: Onlytheinputsignaltochannel1 isdisplayedas
a singletrace.
CH2: Onlytheinputsignaltochannel2 isdisplayedas
a singletrace.
DUAL: Displayschannel1 and2 signalsonthe screen.
ADD:Thewaveforms from channel1 andchannel2 in-
tern+ CH2) putsareaddedandthesumisdisplayedasa
single trace.WhentheCH2INVcontrolis
pulledout,thewaveform from channel2 is sub-
tracted from thechannel1 waveformandthe
differenceisdisplayedasa singletrace.
TRI: Displayschannel1,2 and3 signalsonthe
screen.
@ POWER, SCALE ILLUM
Fully counterclockwiserotationofthiscontrol(OFFposi-
tion)turnsoffoscilloscope.Clockwiserotationturnson
oscilloscope. Furtherclockwiserotationofthecontrolin-
creases theilluminationlevelof scale.
@ TRACE ROTATION
Electrically rotatestracetohorizontalposition.
Strongmagneticfieldsmay cause thetracetobetilted.
Thedegreeof tilt mayvaryasthescopeismoved from one
locationtoanother.Inthese cases, adjustthiscontrol.
@ FOCUS
Adjusts thetraceforoptimumfocus.
@>INTENSITY/PULLASTIG
INTENSITY: Clockwiserotationofthiscontrolincreases
thebrightnessofthetrace.
ASTIG: Pulloutand rotate thisknob.Astigmatismad-
justmentprovidesoptimumspotroundness
whenusedinconjunction with FOCUS con-
trol regardlessintensitycontrol.
(fj) LEVEL/PULL SLOPE (-)
LEVEL: Triggerleveladjustmentdeterminesthepoint
onwaveformwheresweepstarts.
WhenCOUPLINGswitchisselectedinTV-
FRAME orLINE,thetriggerleveladjustment
has noeffect.
SLOPE: Selectoroftriggerpolarity;pullingthiscontrol
selects thenegativeslope.
10

(§)CH3T POSITION
Adjusts theverticalpositionofchannel3 trace.Thiscon-
trol isusedwhentheverticalMODEisselectedto TRIPLE.
@ SOURCE
Five-positionleverswitch;selects triggering sourceforthe
sweep, with following positions;
VERT MODE:
The trigger sourceisdeterminedbyvertical
MODEselection. (Hereafter VERTMODEisab-
breviatedtoV.MODE.)
CH1: Channel1 signalisusedasa trigger
source.
CH2: Channel2 signalisusedasa trigger
source.
ADD:Thealgebraicsumofchannel1 and
channel2 signalsisthe trigger source.(If
CH2INVisengaged,thedifference
becomesthe trigger source.)
ALT; Displayisalternately triggered by
CH1andCH2(dual-traceopera-
tion) orCH1,CH2andCH3
(triple-traceoperation).
CHOP;
Thedisplaycannotbesynchroniz-
ed with the input signalsincethe
choppingsignalbecomesthetrig-
gersource.
CH1: Sweepis triggered bychannel1 signal
regardlessofverticalMODEselection.
CH2: Sweepis triggered bychannel2 signal
regardlessofverticalMODEselection.
EXT/
CH3: Sweepis triggered bysignalappliedtoEXTTRIG
INPUTjack@).
LINE: Sweepis triggered bylinefrequency
(50/60 Hz).Sweepmaynotbe triggered when
theCOUPLINGswitchisnotattheACposition.
In that case, settheCOUPLINGswitchtoAC.
®COUPLING
Five-positionleverswitch;selectscouplingfor sync trigger
signal.
AC: Triggerisaccoupled.Blocksdccomponentofin-
putsignal;mostcommonlyusedposition.
HFrej: Sync signaliscoupled through a low-pass filter
toeliminatehighfrequencycomponentsfor
stable triggering oflowfrequencysignals.
DC: The sync signalisdccoupledfor sync whichin-
cludes theeffectsofdccomponents.
TV
FRAME: Vertical sync pulsesofa compositevideosignal
areselectedfortriggering.
TVLINE: Horizontal sync pulsesofa compositevideo
signalareselectedfortriggering.
@>CH3orEXT.TRIG
Input terminal ofchannel3 signalorexternal trigger signal.
When verticalMODEissetatTRI,notonlychannel1 and
channel2 input signalsbutchannel3 signalisobservable
simultaneously. When the SOURCE switchissettoEXT
CH3, thissignaltriggerssweep.
(§)HORIZMODE
Used toselectthehorizontaldisplaymode.
A:OnlyA sweepisoperative with theB sweepdor-
mant.
ALT: A sweepalternates with theB sweep.Forthis
modeofoperation,theB sweepappearsasanin-
tensifiedsectionontheA sweep.
B: OnlydelayedB sweepisoperative.
X-Y: Channel1 becomestheY axisandchannel2
becomestheX axisforX-Yoperation.Thesetting
oftheverticalMODEandTRIGMODEswitches
havenoeffect.
@>A TRIGMODE
Five-positionleverswitch;selects triggering mode.
AUTO:Triggeredsweepoperation. When trigger signal
is present,automaticallygeneratessweep (free
runsinabsenceof trigger signal.)
NORM: Normal triggered sweepoperation.Notraceis
presentedwhena proper trigger signalisnotap-
plied.
FIX:Sameasautomaticmode;automatically
generatessweep (free runs)inabsenceof trigger
signalexcept trigger thresholdisautomatically
fixed atcenterof input signalregardlessofset-
ting of LEVEL control.
SINGLE: Singlesweepoperation.Inthismode,
simultaneousobservationof both theA andB
sweeps isnotpossible.
Note;
For singlesweepoperationindualor triple trace,
verticalMODEmustnotbesettoALT.Usethe
CHOPmodeinstead.
RESET: Thisistheresetswitchforsinglesweepopera-
tion.Settingto RESET returnstheswitchtothe
SINGLE position;READYindicator@)goesON
andstaysON until mainsweep(Asweep)is
completed.
@ READYIndicator
InSINGLE triggering mode,lightswhenA TRIGMODE
switchissetto RESET andgoesoffwhenmainsweep(A
sweep)iscompleted.
11

Fig. 4
@B TRIG MODE
Used to selectdelaysweepmode.
AFTER DELAY:
B sweep is triggeredimmediatelyafter the
delay setbyA SWEEP TIME/DIV and DELAY
TIMEMULTcontrols.
TRIG: "TriggerableAfterDelay"operation ofB
Sweep triggering is inhibitedduringdelay
period setbyA SWEEP TIME/DIV and DELAY
TIMEMULTcontrols. B Sweep is triggered by
firstoccurence of propertriggersignalafter the
delay. In this case the source oftheB trigger is
thesameas the source oftheA trigger.Both A
andB triggerlevelsareadjusted by TRIG LEVEL
control.
TV LINE:When A sweeptriggersignalcoupling is set to
TV FRAME, B sweep is triggered by horizontal
sync pulses ofa compositevideosignalafter
thedelay time setby DELAY TIMEMULT.
DELAY = 0:(Hereafter DELAY = 0 is described as DELAY
TIMEZERO.)
A andB sweeps are triggeredsimultaneously,
regardless of DELAY TIMEMULTsetting.This
mode is used to observe the firstportion of
complicatedperiod of pulsetrains with
magnification.
@ A SWEEP TIME/DIV
Horizontalcoarse A sweep time selector.
Selects calibratedsweeptimes of0.05/ts/divto0.5 s/div
in 22 steps for CS-1065 (0.1/ts/divto0.5 s/div in21
steps for CS-1045)when SWEEP VARIABLE control (§)is
set to CALposition(fullyclockwise).
<§) B SWEEP TIME/DIV
Coarse horizontal B sweep time selector.
Selects sweeptimes of0.05 /*s/div to50 ms/div in19
steps for CS-1065 (0.1 /ts/div to50 ms/div in18 steps for
CS-1045).
B sweep time selectorshould be setsameas or fasterthan
A sweeptime.
(§) SWEEP VARIABLE Control
Fine A sweep time adjustment. Inthe fullyclockwise(CAL)
position, the sweep time is calibrated.
Nofineadjustment is available fortheB sweeptime.
12

®POSITION
Rotationadjustshorizontalpositionoftrace.
(§) FINE/PULL X10MAGcontrol
FINE: Rotationbecomesfineadjustmentofhorizontal
positionoftrace.
PULL X10MAG:
Whenpulledout,increasessweep time by10
times.
# DELAY TIMEMULT
Adjusts thestart time oftheB sweeptosomedelay time
afterthestartofA sweep.Thedelay time maybesetto
values between0.2and10timesthesettingoftheA
SWEEP TIME/DIVcontrol.
@>HOLDOFF
Adjusts holdoff(triggerinhibitperiodbeyondsweepdura-
tion).Clockwiserotation from theNORMpositionin-
creases holdofftime,upto10timesattheMAX.position
(fully counterclockwise).
@) TRACE SEPARATION:
Adjusts verticalseparationbetweenA sweepandB sweep
(controlhaseffectonlyintheALTofHORIZ.MODE).
Clockwise rotationincreasesseparation;B sweepmoves
down with respecttoA sweepupto4 divisions.
Fig. 5
REAR PANEL
@)Z AXISINPUT Jack
External intensitymodulationinputterminal.
Positive voltagedecreasesbrightness,negativevoltagein-
creases brightness.
® CH1 OUTPUT Jack
CH1verticaloutputsignalconnector.
AC coupledoutputconnector.Thisconnectorisusedto
measure thefrequencybyconnectingthefrequency
counter.WhentheVOLTS/DIVcontrol(2)isat1 mV,fre-
quency measurement with thecountermaynotproducea
correct frequencydisplayduetonoise.
ThensettheVOLTS/DIVtootherrangeor rotate the
VARIABLE control(§)tootherthanCALpositionforstable
operation.DonotconnectCH1OUTPUTtochannel2 input
as cascadedoperation.
@ Fuse Holder,LineVoltageSelector
Contains thelinefuse.Verify that theproperfuseisinstall-
edwhenreplacingthelinefuse.
100V,120V 1 A
220V,240V 0.7A
Afterpullingthepowercordplug from thepoweroutlet,
adjust thisselectortoyourlinevoltage.
(fj)Powerinputconnector
Inputterminalsofpowersupply.ConnecttheACcordpro-
vided.
13

OPERATION
INITIAL STARTING PROCEDURE
Until youfamiliarizeyourself with theuseofallcontrols,
the following proceduremaybeusedtostandarizethein-
itial settingofcontrolsasa reference point andto obtain
traceontheCRTinpreparationforwaveformobservation.
When usingtheprobe(s),refertoprobe'sinstructionsand
"PROBE COMPENSATION"listedin"APPLICATION"of
thismanual.
Fig. 6
(1)NORMAL SWEEP DISPLAYOPERATION
1. TurnthePOWERswitch@ clockwise— thepower
supply will beturnedonandthe pilot lamp will light.
Set thesemodesasfollows;
VerticalMODE(Q): CH1
ATRIGMODE@ : AUTO
2. Thetrace will appearinthecenteroftheCRTdisplay
andcanbeadjustedbytheCH1y POSITION© and
POSITION@ controls. Next, adjusttheINTENSI-
TY (0)and,if necessary, the FOCUS @ foreaseof
observation.
3.VerticalModes
With verticalMODE(Q)settoCH1,applyan input
signaltotheCH1INPUT(5)jackandadjustthe
VOLTS/DIV(2)controlfora suitablesizedisplayofthe
waveform.Ifthewaveformdoesnotappearinthe
display,adjusttheVOLTS/DIVand• POSITIONcontrols
tobringthewaveform into thecenter portion oftheCRT
display.Operation with a signalappliedtotheCH2IN-
PUT(9)jackandtheverticalMODEsettoCH2is
similartotheaboveprocedure.
IntheADDmode,thealgebraicsumofCH1 +CH2 is
displayed.IftheCH2INV(H|switchhasbeenengaged,
thealgebraicdifferenceofthetwowaveforms,
CH1— CH2isdisplayed.If both channelsaresettothe
sameVOLTS/DIV,thesumordifferencecanberead
directlyinVOLTS/DIV from theCRT.
TheDUALmodeallowssimultaneousobservationof
channel1 andchannel2 waveforms.TheTRImode
allowssimultaneousviewingofchannel1 thru channel
3 input signals. IntheTRImode,eithertheCHOPorALT
modeappliesandmustbeselected.
IntheCHOPmode,thesweepischoppedatanapprox-
imate 250kHz rate andswitchedbetweenCH1and
CH2. Note that intheCHOPmodeofoperation with the
SOURCE switchsettoV.MODE,the trigger source
becomesthechoppingsignalitself,makingwaveform
observationimpossible.UseALTmodeinsteadin such
cases, orselecta trigger SOURCE ofCH1,CH2orCH3.
Ifnotraceisobtainable,refertothe following TRIGGER-
INGprocedures.
4. After settingthe SOURCE switch,adjustthe
LEVEL/SLOPE control(£§).Thedisplayonthescreen
will probablybeunsynchronized.RefertoTRIGGERING
procedurebelowforadjustingsynchronizationand
sweepspeedto obtain a stabledisplayshowingthe
desirednumberofwaveform.
TRIGGERING
The input signalmustbeproperly triggered forstable
waveformobservation.TRIGGERINGispossibleusingthe
input signalINTernallytocreatea trigger or with anEXTer-
nallyprovidedsignalof timing relationshiptotheobserved
signal, applying such a signaltotheEXTTRIGINPUTjack.
The SOURCE switch selects the input signal that istobe
used to trigger thesweep, with INT sync possibilities
(V.MODE,CH1,CH2,LINE)andCH3/EXT sync possibility.
14

*Internal Sync
Whenthe SOURCE selectionisinINT(V.MODE,CH1,
CH2, LINE),theinputsignalisconnectedtotheinternal
triggercircuit.Inthisposition,a partoftheinputsignalfed
totheINPUT(5)or(9)jackisappliedfromthevertical
amplifiertothetriggercircuitto cause thetriggersignal
triggeredwiththeinputsignaltodrivethesweep.
WhentheV.MODEpositionisselected,thetriggersource
is dependentupontheverticalMODEselection.
WhentheverticalMODEswitchisselectedinALTand
DUAL, thetriggersourcealternatesbetweenchannel1 and
channel 2 witheachsweep.
WhentheverticalMODEswitchisselectedinALTandTRI,
thetriggersourcealternateschannel1 thruchannel3 with
each sweep.
This isconvenientforcheckingamplitudes,waveshape,or
waveformperiodmeasurementsandevenpermits
simultaneous observationoftwowaveformswhicharenot
relatedinfrequencyorperiod.However,thissettingisnot
suitable forphaseortimingcomparisonmeasurements.For
such measurements,twoorthreetracesmustbetriggered
bythesame sync signal.
Whenthe SOURCE selectionisinCH1,theinputsignalat
thechannel1 INPUT(5)jackbecomestriggerregardlessof
thepositionofverticalMODE.Whenthe SOURCE selection
is inCH2,theinputsignalatthechannel2 INPUT(§)jack
becomes triggerregardlessofthepositionofvertical
MODE. Ifthe SOURCE switchissettotheLINEposition,
triggeringisderivedfromtheinputlinevoltage (50/60 Hz).
This isusefulmeasurementsthatarerelatedtolinefre-
quency.
*External Sync
Whenthe SOURCE selectionisin EXT/CH3, theinput
signal attheEXTTRIGINPUT@ jackbecomesthetrig-
ger.Thissignalmusthavea timeorfrequencyrelationship
tothesignalbeingobservedtosynchronizethedisplay.Ex-
ternal sync ispreferedforwaveformobservationinmany
applications. Forexample.Fig.7 showsthatthesweepcir-
cuit isdrivenbythegatesignalwhenthegatesignalinthe
burst signalisappliedtotheEXTTRIGINPUTjack.Fig.7
also showstheinput/output signals, wheretheburstsignal
generatedfromthesignalisappliedtotheinstrumentunder
test. Thus, accuratetriggeringcanbeachievedwithout
regardtotheinputsignalfedtotheINPUT(5)or(9)jackso
thatnofurthertriggeringisrequiredevenwhentheinput
signal isvaried.WhentheverticalMODEissettoTRI,
triple-tracedisplayisprovidedandthesignalappliedtoEX-
T/CHS istobeusedtotriggerthesweep,withINTernal
sync possibility.
Triggersignal
(Gatesignal)
CH1(Inputsignal to
' amplifier,etc.)
CH2 (Output signal
from amplifier,etc.)
* Coupling
The COUPLINGswitch selects thecouplingmodeofthe
triggersignaltothetriggercircuitaccordingtothetypeof
triggersignal(DC,AC,signalsuperimposedondc,signal
withhighfrequencynoise.).
AC:
Mostcommonlyusedposition;permitstriggeringfrom
10Hztoover60MHz(forCS-1045,40MHz). Blocks dc
componentof sync triggersignal.
HFrej.:
Attenuatestriggersignalabove100kHz.Usefultoreduce
high-frequencynoise,andpermitstriggeringfromthe
modulationenvelopeofanamplitudemodulatedrfsignal.
DC:
Permits triggeringfromdctoover60MHz(forCS-1045,
40MHz).Couplesdccomponentof sync triggersignal.
Useful fortriggeringfromverylowfrequencysignals
(below10Hz)orrampwaveformswithslowrepeatingdc.
Waveform with high frequencynoise
15
Fig. 7
Triggersignal byHF rejection
Fig. 8

LEVEL
* AutoTrigger
WhentheA TRIGMODE® selectionisinAUTO,the
sweep circuitbecomesfree-runningaslongasthereisno
trigger signal, permittinga check ofGNDlevel.Whena trig-
ger signalispresent,thetriggerpointcanbedeterminedby
the LEVEL controlforobservationasinthenormaltrigger
signal. Whenthetriggerlevelexceedsthetrigger signal,
thetriggercircuit also becomesfree-runningwherethe
waveformstartsrunning.WhentheA TRIGMODEissetto
NORMand/or,whenthetriggersignalisabsentorthetrig-
geringlevelexceedsthesignalthereisnosweep.
*Fix
WhentheA TRIGMODE© issettoFIX,triggeringis
always effectedinthecenterofthewaveform,eliminating
theneedforadjustingthetriggeringlevel.AsshowninFig.
10-(a)or(b),whentheA TRIGMODEissettoNORMand
thetriggeringlevelisadjustedtoeithersideofthe signal,
thetriggerpointisdeviatedastheinputsignalbecomes
small which,inturn,stopsthesweepoperation.Bysetting
theA TRIGMODEtoFIX,thetriggeringlevelis
automaticallyadjustedtotheapproximatecenterofthe
waveformandthesignalissynchronizedregardlessofthe
position of LEVEL controlasshowninFig.10-(c).
Whentheinputsignalissuddenlychanged from a square
waveformtoa pulsewaveform,thetriggerpointisshifted
extremelytowardthe" —"sideofthewaveform unless
thetriggeringlevelisreadjustedasshowninFig.11-(a).
See Fig11-(a)-(2). Also, ifthetriggerpointhasbeensetto
the" —"ofsquarewave(Fig 11-(b)-(1)) andtheinput
signal ischangedtoa pluse signal, thetriggerpointis
deviatedandthesweep stops. Whenthishappens,setthe
A TRIGMODEtoFIXandthetriggeringiseffectedinthe
approximatecenterofthewaveform,makingitpossibleto
observe a stabilizedwaveform.(Fig11-(c))
Fig. 10
inputsignalchanged
into a pulsewaveform.
Highestlevel
(b) When thetriggerlevel is set to
the " — " side of thewaveform
(Mode switchset to "NORM")
Triggeringwithout
setting level
(c) Mode switchset to "FIX".
Fig. 11
16
*TriggeringLevel
Trigger pointonwaveformisadjustedbythe LEVEL/PULL
@ control.Fig.9 shows therelationshipbetweenthe
SLOPE and LEVEL ofthetriggerpoint.Triggeringlevelcan
beadjustedas necessary.
SLOPE "-" RANGE
SLOPE " + " RANGE
Fig. 9
"NORM"
Triggerpoint
Trigger
point
Trigger
point
"FIX"
@ LEVEL control
Trigger
point
Readjust level
(a) When thetriggerlevel is set
aroundthecenter of thewaveform.
Triggerpoint
Sweep stopswith no trigger.
Samelevel as(1)

(2)MAGNIFIED SWEEP OPERATION
Since merelyshorteningthesweep time tomagnifya por-
tion ofanobservedwaveformcanresultinthedesiredpor-
tion disappearingoffthe screen, such magnifieddisplay
should beperformedusingtheMAGNIFIED SWEEP.
Using thePOSITIONcontrol,adjustthedesiredportion
ofwaveformtotheCRT.Pullthe PULLx 10MAG® con-
trol tomagnifythedisplay10times.Forthistypeof
display thesweep time isthe SWEEP TIME/DIVsetting
dividedby10.
(3)ALTERNATING SWEEP OPERATION
A sweepandB delayedsweepareusableinanalternating
fashion makingitpossibletoobserveboththenormaland
magnifiedwaveformsimultaneously.
Procedure:
1. SettheHORIZMODEtoA andadjustfora normal
waveformdisplay.
2. SettheB TRIGMODEto AFTER DELAY andsetthe
HORIZMODEtoALT.Adjust TRACE SEPATATION@
for easy observationofboththeA andB traces.Theup-
pertraceisthenon-magnifiedportionofthewaveform
with themagnifiedportionsuper-imposedasaninten-
sified section.Thelowerwaveformistheintensified
portiondisplayedmagnified.
3. The DELAY TIMEMULTcanbeusedtocontinuously
slide themagnifiedportionofthewaveform across the
A sweepperiodtoallowmagnificationofpreciselythe
desired portionofwaveform.Tomagnifythe front part
ofthesweep,setB TRIGMODE@ to DELAY = 0.
4.SettheHORIZMODEtoB todisplaytheINTintensified
portionasa magnifiedB sweep.(Fig.13)
DelayTime(magnifiedportion)= DELAY TIMEMULT
settingx A SWEEP TIME/DIVsetting.
5.ForStarts AFTER DELAY operation,apparent jitter in-
creases asmagnification increases. Toobtaina jitter
freedisplaysettheB TRIGMODE@ to TRIG. Inthis
"TriggerableAfterDelay"modetheA triggersignal
selected bythe SOURCE switch(fj)becomestheB trig-
ger source.
Fig. 13Magnifiedviewofintensifiedzoneabove
Note that forthistypeofoperationboththe DELAY TIME
MULTandTRIG LEVEL affectthestartoftheB sweepso
that thedelay time isusedasa referencepoint.(Fig.14)
(4)X-YOPERATION
For somemeasurements,anexternalhorizontaldeflection
signal isrequired.ThisisalsoreferredtoasanX-Y
measurement,wheretheY inputprovidesverticaldeflec-
tion andX inputprovideshorizontaldeflection.
X-Y operationpermitstheoscilloscopetoperformmany
types ofmeasurementsnotpossible with conventional
sweep operation.TheCRTdisplaybecomesanelectronic
graphoftwoinstantaneousvoltages.Thedisplaymaybea
directcomparisonoftwovoltages such asduringphase
measurement,orfrequencymeasurement with Lissajous
waveforms.
To useanexternalhorizontalinput,usethefollowingpro-
cedure;
1. SettheHORIZMODEswitchtoX-Ytheposition.
2. Usethechannel1 probefortheverticalinputandthe
channel 2 probeforthehorizontalinput.
3. Adjusttheamountofhorizontaldeflection with theCH2
VOLTS/DIV and VARIABLE controls.
4.TheCH2(vertical)POSITION (Q}> controlnow serves as
thehorizontalpositioncontrol,andthePOSITION
controlisdisabled.
5.All sync controlsaredisconnectedandhavenoeffect.
B Sweep
ASweep Intensified
zone tobe magnified ASweep
. Intensified zone tobe magnified
B Sweep
Fig. 12
Fig. 14
17

15! VIDEOSIGNALOBSERVATION
TheTVFRAME/LINEswitchpermitsselectionofverticalor
horizontal sync pulseforsweeptriggeringwhenviewing
compositevideowaveforms.IntheLINEposition,horizon-
tal sync pulsesareselectedastriggersto permit viewingof
horizontallineofvideo.IntheFRAMEposition,vertical
sync pulsesareselectedastriggersto permit viewingof
verticalfieldsandframesofvideo.Whenobservingthe
videowaveforms,stabledisplayisobtainedonthescreen
regardless theTRIG LEVEL (Q)control.
Atmostpointsofmeasurement,a compositevideosignal
is ofthe(—)polarity, that is,the sync pulsesarenegative
andthevideoispositive.Inthis case, use"-" SLOPE.
Ifthewaveformistakenata circuitpointwherethevideo
waveformisinverted,the sync pulsesarepositiveandthe
videoisnegative.Inthis case, use" + " SLOPE.
(6) SINGLE SWEEP OPERATION
This modeofdisplayisusefulforlookingatnon-
synchronous orone time events.
Procedure:
1. SettheA TRIGMODE(§)toeitherAUTOorNORM.
Applya signalofapproximatelythesameamplitudeand
frequencyasthesignal that istobeobservedasthetrig-
gersignalandsetthetriggerlevel.
2. SetA TRIGMODEto RESET - observe that the READY
indicatorLEDlightstoindicatetheresetcondition.This
LED goesoutwhentheA sweepperiodiscompleted.
3. After theaboveset-upiscompletedthescopeisready
tooperateinthe SINGLE sweepmodeofoperation after
resettingtheinstrumentusingthe RESET switch. Input
ofthetriggersignalresultsinoneandonlyonesweep
and READY indicatorLEDgoesout.
r— CAUTION:,
With theHORIZMODEsettoALTthesimultaneous
observationoftheA sweepandB sweepwaveforms
at SINGLE sweepmodeisnotpossible.Alsofor
DUAL orTRIoperationsimultaneousobservationis
notpossibleusingALTmode.Settheunittothe
CHOP modeinthis case.
18

APPLICATIONS
PROBE ADJUSTMENT
Toobtainanaccuratemeasurementresult,theprobemust
beadjustedcorrectlybeforemeasurement.
1. ConnecttheprobetotheINPUTterminalandsetthe
controlfora normalsweepdisplay.
2. ConnecttheprobetotheCALterminalonthe front
panel, andadjustthe SWEEP TIME/DIVswitchso that
several cycles ofthissignalaredisplayed.
3. Adjustthetrimmerontheprobetoobtainthefollowing
correct compensationwaveform.
Correct
compensation
Over
compensation
Insufficient
compensation
Fig. 15
2. SettheA TRIG MODE toAUTOandAC-GND-DCtothe
GNDposition,whichestablishedthezerovoltreference.
Using the• POSITIONcontrol,adjustthetraceposition
tothedesiredreferencelevelposition,makingsurenot
todisturbthissettingoncemade.
3. SettheAC-GND-DCswitchtotheDCpositionto
observe theinputwaveform,includingitsDCcompo-
nent.IfanappropriatereferencelevelorVOLTS/DIV
settingwasnotmade,thewaveformmaynotbevisible
ontheCRT screen atthispoint.Ifso,resetVOLTS/DIV
and/orthe % POSITIONcontrol.
4.Usetheo POSITIONcontroltobringtheportionof
thewaveformtobemeasuredtothecentervertical
graduationlineoftheCRT screen.
5.Measuretheverticaldistance from thereferencelevelto
thepointtobemeasured,(thereferencelevelcanbe
rechecked bysettingtheAC-GND-DCswitchagainto
GND).
Multiply thedistancemeasuredabovebythe
VOLTS/DIV settingandtheprobeattenuationratioas
well. Voltagesaboveandbelowthereferencelevelare
positiveandnegativevaluesrespectively.
Using theformula:
DC level- Verticaldistancein divisions x (VOLTS/DIV set-
ting) x (probeattenuationratio).
TRACEROTATIONCOMPENSATION
Rotation from a horizontaltracepositioncanbethe cause
ofmeasurementerrors.
Adjust thecontrolsfora singledisplay.SettheAC-GND-DC
switch toGNDandA TRIGMODEtoAUTO.Adjustthe%
POSITIONcontrol such that thetraceisoverthecenter
horizontal,graticuleline.Ifthetraceappearstoberotated
from horizontal,alignit with thecentergraticulelineusing
the TRACE ROTATIONcontrollocatedonthe front panel.
DCVOLTAGEMEASUREMENTS
This proceduredescribesthemeasurementprocedurefor
waveformsincludingtheDCcomponent.
Procedure:
1. ConnectthesignaltobemeasuredtotheINPUT
jack.Set theverticalMODEtothechanneltobe used.
Set theVOLTS/DIVand SWEEP TIME/DIVswitchtoob-
taina normaldisplayofthewaveformtobemeasured.
Set the VARIABLE controltoCALposition.
[EXAMPLE]
For theexample,thepointbeingmeasuredis3.8divisions
from thereferencelevel(groundpotential).
IftheVOLTS/DIVwassetto0.2V anda 10:1probewas
used. (SeeFig.16)
Substitutingthegivenvalues:
DC level= 3.8(div)x 0.2(V) x 10= 7.6V
19
Measuring point adjusted to thecenter
vertical scale byo POSITION
.Ground potentialadjusted by
Y POSITION(referenceline)
Fig. 16
Vertical
distance

MEASUREMENT OFTHEVOLTAGE BETWEEN TWO
POINTS ONA WAVEFORM
This techniquecanbeusedtomeasurepeak-to-peak
voltages.
Procedure:
1. ApplythesignaltobemeasuredtotheINPUTjack.Set
theverticalMODEtothechanneltobe used. Setthe
AC-GND-DC toAC,adjustingVOLTS/DIVand SWEEP
TIME/DIVfora normaldisplay.SettheVARIABLE con-
trol toCALposition.
2. Usingthe• POSITIONcontrol,adjustthewaveform
position such that oneofthetwopointsfallsona CRT
graduationlineand that theotherisvisibleonthe
display screen.
3. UsingthePOSITIONcontrol,adjustthesecond
pointtocoincide with thecenterverticalgraduationline.
4.Measuretheverticaldistancebetweenthetwopoints
andmultiplythisbythesettingoftheVOLTS/DIV con-
trol.
Ifa probeis used, furthermultiplythisbytheattenua-
tion ratio.
Using theformula:
Voltspeak-to-peak
= Verticaldistance(div)x (VOLTS/DIVsetting)x (probe
attenuationratio)
Adjust to thecenter
vertical scale with
[EXAMPLE]
For theexample,thetwopointsareseparatedby4.4divi-
sions vertically.SettheVOLTS/DIVsettingbe0.2V/div
andtheprobeattenuationbe10:1.(SeeFig.17)
ELIMINATIONOFUNDESIREDSIGNAL
COMPONENTS
TheADDfeaturecanbeconvenientlyusedtocancelout
theeffectofanundesiredsignalcomponentwhichmaybe
superimposed onthesignalyouwishtoobserve.(SeeFig.
18)
Procedure:
1. Applythesignalcontaininganundesiredcomponentto
theCH1INPUTjackandtheundesiredsignalitselfalone
totheCH2INPUTjack.
2. SettheverticalMODEtoDUAL(CHOP)and SOURCE to
CH2. Verify that CH2representstheunwantedsignalin
reverse polarity.Ifnecessaryreversepolaritybysetting
CH2 INV.
3. SettheverticalMODEtoADD, SOURCE toV.MODE
andCH2VOLTS/DIVandVARIABLEso that the
undesired signalcomponentiscancelledasmuchas
possible. Theremainingsignalshouldbethesignalyou
wish toobservealoneandfreeoftheunwantedsignal.
Signal containingundesiredcomponent
(Brokenlines:undesiredcomponentenvelope)
Undesiredcomponentsignal
Substitutingthegivenvalue:
Voltagebetweentwopoints= 4.4(div)x 0.2(V) x 10 = 8.8V
20
POSITION.
Points tobe measured
Vertical
distance
between
two
points
Adjust to thehorizontal
scale with * POSITION.
Fig. 17