Kenwood CS-8010 User manual

©PRINTED IN JAPAN B50-7624-30(T)
91/12111098765432190/12111098765432
DIGITALSTORAGEOSCILLOSCOPE
CS-8010
INSTRUCTION MANUAL
KENWOOD CORPORATION
KENWOOD

SAFETY
SymbolinThis Manual
.Thissymbolindicateswhereapplicablecautionaryor
ZIA other imformation istobe found.
PowerSource
This equipment operates from a power source that does
not apply more than 250V rmsbetweenthesupplycon-
ductors orbetween either supply conductor and ground. A
protective ground connection bywayofthe grounding con-
ductor inthe power cord isessentialforsafe operation.
GroundingtheProduct
This equipment is grounded through the grounding conduc-
torofthe power cord.Toavoidelectricalshock, plug the
power cord into a properly wired receptacle before connec-
ting tothe equipment input or output terminals.
Use theProperPowerCord
Use only the power cord and connector specifiedfor your
product.
Use theProperFuse
To avoid fire hazard,usea fuseofthecorrecttype.
DonotOperateinExplosiveAtmospheres
To avoidexplosion,donot operate this product inanex-
plosiveatmosphere.
DonotRemoveCoverorPanel
To avoidpersonal injury, donotremovethecoverorpanel.
Refer servicingto qualified personnel.
Voltage Conversion
Ifthe power sourceisnot applied to your product, contact
your dealer.Toavoidelectricalshock,donot perform the
voltage conversion.
CONTENTS
SAFETY 2
FEATURES 3
SPECIFICATIONS 4
APRECAUTIONS7
CONTROLS ANDINDICATORS8
FRONTPANEL8
REAR PANEL...13
DIRECTIONSFORUSE14
OPERATION15
[A]OPERATIONSASA GENERAL-USE OSCILLOSCOPE 15
(1)NORMALSWEEPDISPLAYOPERATION15
(2)SWEEPMAGNIFICATIONOPERATION16
(3)X-YOPERATION16
(4)VIDEOSIGNALOBSERVATION17
(5)SINGLESWEEPOPERATION17
[B]READOUTOPERATION17
[C]OPERATIONASA DIGITALSTORAGE
OSCILLOSCOPE 17
APPLICATION23
PROBE COMPENSATION23
TRACE ROTATIONCOMPENSATION...23
1. DCVOLTAGEMEASUREMENTS23
2.MEASUREMENTSOFTHEVOLTAGE
BETWEEN TWOPOINTSONA WAVEFORM .....24
3. ELIMINATION OFUNDESIREDSIGNAL
COMPONENTS25
4. VOLTAGE RATIOMEASUREMENTUSINGCURSORS25
5. TIME MEASUREMENTS.26
6. TIME DIFFERENCE MEASUREMENT.26
7. PULSE WIDTH MEASUREMENTS ....27
8. PULSE RISE TIME ANDFALLTIMEMEASUREMENTS28
9.PHASE DIFFERENCE MEASUREMENTS29
10. TIME RATIOMEASUREMENTUSINGCURSORS..30
11. FREQUENCYMEASUREMENTS..31
12.RELATIVEMEASUREMENTS32
13.APPLICATIONOFX-YOPERATION33
APPLICATIONEXAMPLESASA DIGITALSTORAGE
OSCILLOSCOPE 34
AMAINTENANCE ....36
RESETTING THEREADOUTCALENDERAND CLOCK
DISPLAY • 37
ACCESSORIES ....38
2

FEATURES
The model CS-8010 isa digital storageoscilloscope
available fordual-channelsimultaneoussamplingatthe
maximumsamplingspeedof100ns/word.Witha storage
capacity of8 bitsx 2048words,the CS-8010 offersan
easy waveformstorage,havingbeensubjecttocom-
plicatedoperationheretofore. Used asa general-use
oscilloscope, itfeaturesa widefrequencyband from DCto
20 MHz.Thealphanumeriscrtreadoutsfunctiondisplays
thecalendar/clock,thevertical axis input sensitivity,and
thesweeptime.Thecursorfunctiondisplaysthevoltage
differenceandthetimedifferencebetweentwocursor
lines ontheCRT.Withthesefunctions,the CS-8010
simplifiesdatacollection through photography.
1. Easy waveformobservationofsudden(burst),single,
andtransientphenomena,etc. with thestoragefunc-
tion.
2. Uptoa X40magnification with thetrigger point asthe
centerinthestoragefunction.The PULL X10MAGcon-
trollerexpandsuptoa maximumof X400 magnifica-
) tion.
3. Simultaneousdisplayofthereal-timewaveformandthe
storagewaveform.Whichfacilitatescomparing wave-
formsbyreferencetothestoragewaveform.
4. Simplifiedrecordingofthestoragewaveformusinga
penrecorder.
5. Thepre triggering functionenablesobserving wave-
formsbeforetriggering,havingbeenimpossiblefora
general-use oscilloscopecurrentlyinuse.
6. Thereadoutfunctiondisplays each scale factoronthe
CRT, eliminatingtroublesomeconfirmationoftherange
forwaveformobservation.
Whentheprovidedprobe PC-33 is used, thevertical
sensitivitydisplayonthe CRT willbemagnifiedby10
times.
7. Thecursormeasurementmode displays, inletters,vol-
tagedifference,voltageratio,timedifference,timera-
tio,frequency,andphasedifferencecorrespondingto
thecursormovement. This displayeliminates calcula-
tion havingbeenmadebyanoperator,resultinginac-
curatewaveformobservation.
8. Vertical axis hashighsensitivityandwidebandwidth
andespecially covers fullyspecifiedfrequencyresponse
at5 mV/div.
9. Triggercoupling (HFrej) assures triggering ofsignals
containinghigh-frequencynoise.
10. The FRAME-LINE switchprovidesselectionof sync
pulse forsweep triggering from smallamplitudetolarge
amplitude without adjustingwhenviewingcomposite
videowaveforms.
3

SPECIFICATIONS
CRT
1 50mmrectangular with internalgraticule
AccelerationVoltage
12 kV
Display Area
8 x 10div(1div= 10mm)
VERTICAL AXIS(CH1andCH2)
Sensitivity
1 mV/divto5 V/div,±3%
Attenuator
1 2 steps,1 mV/divto5 V/divin1-2-5sequence.
Vernier control for fully adjustablesensitivitybetweensteps.
Input Impedance
1 MQ±2%approx.22pF
Frequency
Response
DC
Real time
DC to20MHz, within -3dB(5mV/divto5 V/div)
DC to5 MHz, within -3dB(1mV/divand2 mV/div)
Frequency
Response
AC
Real time
5 Hzto20MHz, within -3dB(5mV/divto5 V/div)
5 Hzto5 MHz, within -3dB(1mV/divand2 mV/div)
Rise Time
17.5 nsor less (20MHz)
70 nsor less (5MHz)
Crosstalk
-40 dBminimum
OperatingModes
CH1
Single trace
OperatingModes
CH2
Single trace
OperatingModes
ALT
Two-waveformdisplay,alternately
OperatingModes
CHOP
Two-waveformdisplay,chopped
OperatingModes
ADD
CH1 + CH2addeddisplay
ChopFrequency Approx.250kHz
Channel Polarity Normalorinverted,channel2 onlyinverted
A Maximum Input voltage
500 Vp-por250V (DC+ ACpeak)
HORIZONTALAXIS
Input thru CH2,x 10MAGnotincluded
OperatingModes
With TRIG MODEswitch,X-Yoperationisselectable(storagemodeisreadonly)
CH1 ; Y axis
CH2 ; X axis
Sensitivity
Same asvertical axis (CH2)
Input Impedance
Same asvertical axis (CH2)
Frequency
Response
DC DC
to500kHz,-3dB
Frequency
Response
AC
5 Hzto500kHz,-3dB
X-Y Phase Difference 3°or
less at50kHz
Maximum Input Voltage
Same asvertical axis (CH2)
SWEEP
Type
NORM Triggeringsweep
Type
AUTO
Sweep freerunsinabsenceof trigger
Type
SINGLE
Single sweep
Sweep Time
1 s/divto0.5jis/div,±3%,in20ranges,in 1 -2-5sequence.
Vernier control provides fully adjustablesweep time betweensteps.
Sweep Magnification x10(tentimes)±5%
Linearity
±3% allranges.
TRIGGERING
Internal Sync
CH1
TriggeredbyCH1signal
Internal Sync
CH2
TriggeredbyCH2signal
Internal Sync
LINE
Triggeredbylinefrequency
External Sync
EXT; Triggeredbysignalappliedto EXT TRIG INPUTjack
External Sync Input Impedance Approx.1 M0,approx.32pF
4

A Max. Externa! TriggerVoltage
50 V (DC + AC peak)
Coupling
AC, HFREJ, DC,TV FRAME, TV LINE
Sync sensitivity AtNORM
position
Sync sensitivity
AC
Sync frequencyrange:10Hzto20MHz
INT: 1 div, EXT: 0.1Vp-p
Sync sensitivity
DC
Sync frequencyrange:DCto20MHz
INT: 1 div, EXT: 0.1Vp-p
Sync sensitivity
HFREJ
The sync frequencyrangeismorethan10kHz,andtheminumumamplitude
(voltage)requiredfor sync isincreased.
Sync sensitivity
TV
FRAME, LINE
INT: 1 div, EXT: 0.1Vp-p
Sync sensitivity
AUTO: Ratingshownaboveisprovidedat50Hzorover.
CALIBRATION VOLTAGE
1 V ±3%,squarewave,positivepolarity.1 kHz±3%
INTENSITY MODULATION
Sensitivity
+ 5 V,positivevoltage decreases brightness.
Input Impedance Approx.10kO
Usable FrequencyRange
DC to2 MHz
A Maximum Input Voltage
50 V (DC + AC peak)
DigitalStorage Mode (CommontoCH1 & 2)
Vertical resolution
8 bits(25dots/div.)
Frequency response
DC
Effective StorageFrequencyBandwidthDCto400kHz
Frequency response
AC
Effective StorageFrequencyBandwidth5 Hzto400kHz
Rise time
Useful risetime:160nsor less
Horizontalresolution
11 bits(200dots/div.):1 s/div.to20/is/div.
(100 dots/div.to5 dots/div.):10/xs/div.to0.5/ts/div.
Sampling time
5 ms/wordto100ns/word(1s/div.to20/is/div.)
Fixed to100ns/wordabove20jus/div.
Pen out
Output voltage
0.5 V/div.±10%
Pen out
Output impedance Approx.2 kfi
Pen out
Readout speed
50 ms/word
Pre triggering
0 div.,2.5div.,5 div.,and7.5div.
Operatingsystem
Real
Real-time waveformdisplay
Operatingsystem
Store
Write/readofstoragewaveform
Operatingsystem
R & S
Simultaneous displayofreal-timewaveformandstoragewaveform(readoutonly)
Operatingsystem
Pen
Storage waveformdisplay(readoutonly)
Operatingsystem
Start
Outputsstoragewaveformat PEN OUTterminals.
READOUT
Calendar
Year/Month/Day/O'clock/Minute
Clock accuracy: ±2 min./month
Battery life: About 20,000hours(at room temperature)
Set value
CH1/CH2 scale factor(withprobedetection); V-UNCAL, ADD, INVERT
Sweep scale factor(magnificationconversion); SWEEP VARIABLE-UNCAL, X-Y
5

Cursor mode
4V1:
Voltagedifferencebetween ^REF andA cursorsona CH1 scale factor basis
Cursor mode
AV2:
Voltagedifferencebetween AREF andA cursorsona CH2 scale factor basis
Cursor mode
AT:
Time differencebetween AREF andA cursorsonthe basis ofsweep scale factor
Cursor mode
MAT:
Frequency between AREF andA cursorsonthe basis ofsweep scale factor
Ratio: VoltageratioandtimeratiobetweenA REF andA cursors, supposing5 div.on
the CRT as100%
Phase: Phase differencebetween AREF andA cursors,supposing5 div.onthe CRT
as 360°
NOTE: TheX-YmodeallowsAVI measurementonly.
Cursor
measurement Resolution
10 bits
Cursor
measurement Measurement
accuracy
±4%
Cursor
measurement
Measurable range
AV, Ratio:±3.6divormore from theCRTcenter
AT, MAT, Ratio, Phase: ±4.6divormore from theCRTcenter
TRACE ROTATION (Electrical, adjustable from front panel)
POWER REQUIREMENT
Line Voltage
AC 100V/120V/220V ± 10%216V - 250V
Line Frequency
50/60 Hz
Power Consumption Approx.58W
DIMENSIONS(WxHxD)
319(359) x 132 (145) x 380(442)mm
( ) dimensionsincludeprotrusion from basicoutlinedimensions
WEIGHT
Approx.9.6kg
ENVIRONMENTAL
WithinSpecifications 10°Cto35°C,85%max.relative
humidity
Full Operation 0°Cto40°C,85%max.relative
humidity
ACCESSORIES SUPPLIED
Probe
PC-33 (READOUT compatible probe)x 2
Attenuation1/10
Inputimpedance..10MO,22pF+10%
Power supplycable
1
Replacement Fuse
1.2Ax 2,0.8Ax 2
InstructionManual
1
*Circuitandratingaresubjecttochange without noticeduetodevelopmentsintechnology.
6

PRECAUTIONS
Plug configuration Power cordandplugtype
Factory installed
instrumentfuse
Line cordplugfuse
North American
120 volt/60Hz
Rated 1 5 amp
(12 ampmax; NEC)
1.2A,250V
Fast blow
6 x 30mm None
Universal Europe
220 volt/50Hz
Rated 16amp
0.8A,250V
T. lag
5x 20mm None
U.K.
240 volt/50Hz
Rated 13amp
0.8A,250V
Fast blow
6 x 30mm
0.8A
Type C
Australian
240 volt/50Hz
Rated 10amp
0.8A,250V
Fast blow
6 x 30mm None
North American
240 volt/60Hz
Rated 1 5 amp
(12 ampmax; NEC)
0.8A,250V
Fast blow
6x30 mm None
Switzerland
240 volt/50Hz
Rated 10amp
0.8A,250V
Fast blow
6 x 30mm None
Fig. 1 PowerInputVoltageConfiguration
1. Check thepowersupplyvoltagebefore'use.A voltage
selector/fuse holderisprovidedonthe left sideofthe
AC inletsocket,ontherearpaneloftheset.Theline
voltagesettingisindicatedbya trianglemarkabovethe
fuse holder.Ifthevoltageisdifferent from thepower
supplyinyour area, set itcorrectlytopreventdanger
and malfunctions.Besuretocheckthevoltagebefore
connectingthepowerplugtoanAC outlet.
•Whenconvertingthevoltage,refertothe
jMaintenancesection.
2. The CS-8010 shouldbeinstalledata placemeetingthe
following conditions:
1 Directsunlight
2 Hightemperatureandhumidity.
3 Frequetmechanicalvibration.
4Strongmagnetic rays orimpulsevoltagepossibly
generated from equipmentlocatednearby.
3. Neverapplymorethanthemaximumratedvoltageto
theoscilloscope input jacks.
A CH1, CH2 input jacks:
500 Vp-por250V (DC + AC peak)
EXT TRIG, Z AXIS input jacks:
50 V (DC + AC peak)
Never applyexternalvoltagetotheoscilloscope output
terminals.
4. Donotincreasetheintensitymorethanrequired.
5. Neverallowasmallspotofhighbrilliancetoremainon
thescreenforextendedperiodsoftime.
6. Nevercovertheventilatingholesinthetopofthescope,
as thiswillincreasethetemperatureinsidethe case
therebycausingmalfunction.
7. Whenremovingthe case, observethemaintenancein-
structioncontainedinthismanualtopreventa safety
hazard becausethisinstrumentcontainshighvoltage
circuits.
8. Toprotectagainstsafetyhazards always groundthe
instrumentusingtheGNDterminalsonthepanel.
9. When turning onandoffthe POWER switchrepeated-
ly,keepanintervalofabout5 seconds. Faster onand
offoperationmay cause malfunctiontotheinstrument.
10. Donot use theprovided PC-33 Probe with other meas-
uringequipment because itincorporatesaterminalfor
READOUT detectionwhich might damagetheother
equipment.
11. Forproper use ofthecalendarandclockdisplay,besure
toadjustthedate andtimecorrectly. (Refer tothe
"MaintenanceandAdjustment"section.)
12. Thecalendarandclockdisplayarebackedupbyanin-
corporatedbattery.Ifthebatteryisnearlyexhausted,
thedateandtimewillbedelayed.Ifthishappens,the
incorporatedbatterymustbereplaced with anewone.
Please contactyourdealerorKenwoodserviceagent
for assistance.
7

CONTROLS ANDINDICATORS
Fig. 2
®CH1$ POSITION
Rotationadjustsvertical position of CH1 waveformon
the screen. ForX-Yoperation,this control adjustsY
axis position.
Instoragemode,thisfunctionsistheDC OFFSET ad-
justmentof CH1, whichsuperimposesa DClevelover
the input signal.
Clockwise rotation ofthe control adds+ DC levelto
theGND level. Counterclockwise rotation adds — DC
level totheGND level.
(2)CH1 STORAGE POSI
Controllerforadjustingthevertical position ofCH1
storagewaveform.IntheX-Ymode,itfunctionsasa
Y-axial position adjusterofthestoragewaveform.
(DCHIVOLTS/DIV
Verticalattenuatorforchannel1.Providesstepadjust-
mentofverticalsensitivityin1-2-5sequence. VARI-
ABLE control isturnedtotheCALposition,the
calibratedverticalsensitivityisobtained.ForX-Y
operation,this control serves astheattenuatorforY
axis.
®CH1 VARIABLE Control
Rotationprovidesfine control ofchannel1 vertical
sensitivity.Inthe fully clockwise(CAL)position,the
verticalattenuatoriscalibrated.ForX-Yoperation,this
control serves astheY axis attenuationfineadjust-
ment.
©CH1AC-GND-DC
This switchistheCH1vertical axis couplingmode
selector,forX-Yoperation,the Y-axis couplingmode
control.
AC: AC input coupling with blockingofanyDC
signalcomponent.
GND: Verticalamplifierisdisconnected from thein-
putsignalandconnectedtoground. This mode
is usefulindeterminingthezeroreference.
DC: DCcoupling, with both theDCandACcom-
ponentsofthe input signaldisplayedonthe
CRT.
(6)CH1INPUTjack
Vertical input forchannel1 traceinnormalsweep
operation.Vertical input forX-Yoperation.
(7)$ CH2POSITION/PULL INVert
•CH2 POSITION:
Rotationadjustsvertical position ofchannel2
trace.
INV:Push-pullswitch selects channel2 signalin-
verted (PULL INV)whenpulledout.
(Hereafter PULL INVisdescribedasCH2INV.)
(8)CH2 STORAGE POSI
Controllerforadjustingthevertical position ofCH2
storagewaveform.IntheX-Ymode,itfunctionsasan
X-axial position adjusterofthestoragewaveform.
8
FRONT PANEL

(9)CH2VOLTS/DIV
VerticalattenuatorforCH2.Providesthesamefunc-
tion as VOLTS/DIV Control(§)for CH1. InX-Yopera-
tion,the control serves asthe X-axis attenuator.
®CH2 VARIABLE Control
Rotationprovidesfine control ofchannel2 vertical
sensitivity.
Provides thesame function as VARIABLE Control(4)
for CH1.
For X-Yoperation,this control serves for X-axis at-
tenuationfineadjustment.
(fj) CH2AC-GND-DC
Three-position leverswitchwhichoperatesasfollows:
AC: Blocksdccomponentofchannel2 input signal.
GND: Openssignalpathandgrounds input tovertical
amplifier.Thisprovidesa zero-signalbaseline,
the position ofwhichcanbeusedasa
referencewhen performing dcmeasurements.
DC: Direct input ofacanddccomponentofchannel
2 input signal.
@ CH2INPUT Jack
Vertical input forchannel2 traceinnormalsweep
operation.Externalhorizontal input inX-Yoperation.
®MODE
Selects thebasicoperatingmodesoftheoscilloscope.
CH1: Onlythe input signaltochannel1 is
displayedasa singletrace.
CH2: Onlythe input signaltochannel2 is
displayedasa singletrace.
ALT: Alternatesweepisselectedregardless
ofsweeptime.
CHOP: Chopsweepisselectedregardlessof
sweep time atapproximately250kHz.
ADD: Thewaveforms from channel1 and
channel2 inputsareaddedandthesum
is displayedasa singletrace.Whenthe
CH2 INV(7) button isengaged,the
waveform from channel2 issubtracted
from thechannel1 waveformandthe
differenceisdisplayedasa singletrace.
(Q) _L~ GNDterminal/bindingpost.
Earth and chassis ground.
©CAL
Provides 1 kHz,1 V peak-to-peaksquarewavesignal.
This isusefulforprobecompensationadjustment.
@ EXTTRIGINPUT Jack
Input terminalforexternalsyncsignal.
When SOURCE switchisselectedin EXT position,the
input signalatthe EXT TRIG INPUTjackbecomesthe
trigger.
@ POWER
Power switch.A pressofthisswitchturnsthepower
ON.
®POWERLED
Lightswhenthe POWER switchispressed.
©INTEN (REAL)
Controllerforadjustingbrightnessofthereal-time
waveform bright line.
©INTEN (READOUT/STORE)
Controllerforadjustingbrightnessofthestorage
waveform bright lineandthe READOUT value.
*By turning thecontrolleruptotheveryend both
clockwise andcounterclockwise,thestorage bright
linebecomesbrightest;bysettingittothecenter(3
o'clockposition),itdisappears.By turning thecon-
troller clockwiseuptotheveryend,the READOUT
value becomesbrightest; turning counterclockwise
turnsreadout function OFFandmakesthevalue
disappear.
© FOCUS/PULL ASTIG
FOCUS: Focusadjustment
ASTIG: Used to bring thewaveform into thebestcon-
dition with the FOCUS adjustmentbyad-
justingtraceandspotaberration.Pullthe
knobtomakea spotcircular.
© SCALE ILLUM/PULL TRACE ROTA
SCALE ILLUM: Brightnessadjustmentofthe scale
oftheCRT.Forphotographing,
rotate theknobtoadjustbrightness
toprevent halationcausedbytoo
bright illumination.
TRACE ROTA: Tiltadjustmentofthehorizontal
bright lineinthe case where
geomagnetisminfluencesthe
bright lineto tilt.
© SWEEP TIME/DIV
Range selectdialof20ranges from 1 sec/div.to
0.5/is/div.
To calibratethesetvalue, rotate the SWEEP
VARIABLE controller@ clockwiseuptotheCAL
position.Inthestoragemode,therange from
10 /is/div.to0.5/ts/div. causes magnifiedsweep,
resultinginloweringofhorizontalresolution.
© SWEEP VARIABLE Control
Fine sweep time adjustment.Inthe fully clockwise
(CAL) position,thesweep time iscalibrated.
Instoragemode,however,itcannotbevaried,asthe
CAL statusismaintained.
9

Fig. 3
@ < • POSITION/PULLx 10MAG
Horizontal position controller,whichprovideshorizon-
talshiftofwaveform.By pulling theknob,thesweep
time isquickenedtentimes.
IntheX-Yoperationmode.ItfunctionsasanX posi-
tion controller.AlsofunctionsasanX position con-
troller ofthestoragewaveform.
NOTE: InX-Yoperation,keepthisknobpressed
(normalsweepmode).
(§)COUPLING
Selects couplingforsync trigger signal.
AC: TriggerisACcoupled.BlocksDCcompo-
nentof input signal;mostcommonlyused
position.
HFrej: Sync signalisDCcoupled through a low-
pass filter toeliminate high frequencycom-
ponentsforstable triggering oflowfrequen-
cy signals.
DC: ThesyncsignalisDCcoupledforsync
whichincludestheeffectsofDCcom-
ponents.
TV Verticalsyncpulsesofa compositevideo
FRAME: signalareselectedfortriggering.
TV LINE: Horizontalsyncpulsesofa compositevideo
signalareselectedfortriggering.
@ SOURCE
Sweep trigger sourceselectswitch.
CH1: Channel1 signalisusedasa trigger source.
CH2: Channel2 signalisusedasa trigger source.
LINE: Sweepis triggered bylinevoltage(50/60Hz).
NOTE: Whenthe COUPLING switchissetto
otherthanACposition,the syn-
chronizationcannotbecarriedout.Be
sure tosetthe COUPLING switchtoAC
position.
EXT: Sweepis triggered bysignalappliedtoEXT
TRIG INPUTjack(jjj).
@ TRIGMODE
Selects triggering mode.
AUTO: Triggeredsweepoperationwhen trigger
signalispresent,automaticallygenerates
sweep (freeruns)inabsenceof trigger
signal.
NORM: Normal triggered sweepoperation.Notrace
is presentedwhena proper trigger signalis
notapplied.
X-Y: X-Yoperation.Channel1 input signalpro-
duces verticaldeflection(Y axis). Channel2
input signalproduceshorizontaldeflection
(X axis).
This operatesregardlessverticalMODE
selection.
NOTE: Instoragemode,onlythereadout
operationispossible.Thewrite
operationisdisabled.
SINGLE: Single-sweepmode
Digitalstoragepre trigger modeinsingle
sweep operation.The trigger point canbe
set from 0 to7.5div. with the PRE TRIG
select switch.
NOTE: Dual-tracesingle-sweepobservation
is notpossibleiftheverticalopera-
tion MODEissettoALT.Besureto
set theMODEto CHOP.
10

RESET: Reset modeofsingle-sweepoperation.
Whenreset,theswitchreturnstothe
SINGLE position, with the READY LED@
lightinguntil completionofsweep.
Instoragemode,starttheoperationmanually.
@ READY LED
Whenresetinsingle-waveoperation,thislamplights
andremainslit until thesweepoperationiscompleted.
Instoragemode,thislamplightsaftera writeopera-
tion isenabled,showingthatthe unit isinthetrigger
signal waitingstatus.InPRE TRIG mode,thislamp
lightsafterthewrite inhibit periodisfinished,showing
thatthe unit isinthetriggersignalwaitingstatus.
@i PRE TRIG
Modeforobservingwaveform prior totriggersignal.
To observeit,settheselectswitchtoa value from 2.5
to7.5div.Ifitissetto2.5div.,waveform prior to
triggersignalisdisplayedintherangeoftheleft-hand
2.5 divisions,whilewaveformposteriortotrigger
signal isdisplayedintherangeoftheright-hand7.5
divisions. Whentheswitchissetto0 div.,waveform
prior totriggersignalcannotbeobservedsincethe
CS-8010 functionsasa general-useoscilloscope with
thetrigger point atthe left endonthe CRT.
For detailsonpre-triggering,refertodescriptionitems
"SINGLE" and "RESET" ofthe TRIGGERING MODE
switch(£|).
NOTE: Donotswitchthe PRE TRIG switchbetween
0 dBand2.5to7.5divwhilethe DISPLAY
select switch(f|)issettoa readout-only
modeofR&Sor PEN: otherwisethestart point
errorwouldoccurmakingnormalwaveform
observationimpossible.
@ LEVEL/PULL SLOPE (-)
LEVEL: Triggerleveladjustmentdetermines point on
waveformwheresweepstarts.
When COUPLING switchisselectedinTV-
FRAME or LINE, thetriggerleveladjustment
has noeffect.
PULL SLOPE (-)Switch:
Two-positionpush-pullswitch.Pulledout
position selects negative going ( —) slope
andpushedinposition selects positiver-
going (+)slopeas triggering point.
® DISPLAY
REAL: Functionsasa general-useoscilloscope.
Data isnot written inthememory.
STORE: Functionsasa digital storageoscilloscope.
Data is written andreadout in/from the
memory.Lightingofthe WRITE LEDin-
dicates thatdataisbeing written inthe
memory.Donotoperatethecontrolknobs
duringa writeoperation,asnormal
waveformmaynotbe output.
NOTE: CH1andCH2are written simul-
taneouslyevenwhentheMODE
select switch(jj)s settoALT.
R&S: Displays both real-timewaveformand
storagewaveform.Thestoragewaveformis
forreadoutonly,andisnot written inthe
memory.Therefore,theverticalattenuator
and SWEEP TIME controls,etc.donotfunc-
tion forstoragewaveforms.Astheyfunc-
tionsonlyforreal-timewaveforms,be
tionsonlyforreal-timewaveforms,be
careful whenusing READOUT. (Whenthe
cursor storagewaveformmeasurementis
used otherthanwheninwriterange,the
correctdisplaymaynotbeobtained.)
PEN: Displaysthestoragewaveform(readouton-
ly). Thestoragewaveform(readoutonly)is
displayed.
Therefore, if READOUT isusedotherthan
wheninwriterange,thecorrectdisplaymay
notbeobtained.
START: Penstartsettingfor outputing storage
waveformatthe PEN OUTterminalsonthe
rear panel.Whenwaveformbeginstobe
output, thepenspeedisreadoutandthe
switchreturnstothePENposition.During
penoperation, bright lineisdisplayedonthe
CRT, andthe READOUT valuedisappears.
NOTE: WhentheMODEselectswitch@
is settoADD,the PEN OUTsignalis
output from CH1.
@ WRITELED
Lights whilethe DISPLAY selectswitch@ issetto
the STORE positionanddataisbeing written inthe
memory.EithertriggersignalorsettingtheMODE
select switch(fj)to SINGLE-RESET positionto cause
thepretriggermodestartsdatawriting.
Whenthe DISPLAY selectswitch@ ischangedto
anotherposition,data writing into thememoryis
discontinued,andthestoredwaveformisnullified.
@A
Controllerforshiftingthemeasuringcursor(rough dot-
tedline)outoftwocursorlinesdisplayedonthe CRT in
thecursormeasurement.By rotating thecontroller
clockwise, thecursorlinemovesupwardorrightward:
by rotating counterclockwise,itmovesdownwardor
leftward.
®A REF
Controllerforshiftingthereferencecursor (small-
dotted line)outoftwocursorlinesdisplayedonthe
CRT inthecursormeasurement.By rotating thecon-
trollerclockwise,thecursorlinemovesupwardor
rightward:by rotating counterclockwise,itmoves
downwardorleftward.
(§) CURSORS
Cursor measurementmodeselectswitch.
OFF: Cursormeasurementisnotperformed.Thecur-
sor, andcursourmeasurementmodeandcur-
sor measurementvaluearenotdisplayedon
the CRT.
AW\: Twohorizontalcursorlinesaredisplayedonthe
CRT, andvoltagedifferenceandvoltageratio
betweenthemaredisplayedintheupper right
ontheCRTposteriortothecursormeasure-
mentmodedisplay.
SettingtheCH1 VARIABLE controller(?)to
theCALposition causes voltagedifference
measurement, anda valuecalculatedinaccor-
dance with settingoftheCH1 VOLTS/DIV dial
(3) isdisplayedposteriortoAVI.
Settingthe CH1 VARIABLE controller® tothe
UNCAL position causes voltageratiomeasure-
ment,andavaluecalculatedassumingthat5 div.
is 100%isdisplayedposteriortothe RATIO.
WhentheA cursorisbelowtheA REF
cursor, a negativevalueisdisplayed.
NOTE: SettingoftheMODEselectswitch(f|to
theCH2position causes A V2mode
cursor measurement.
11

Fig. 4
AV'2: Twohorizontalcursorlinesaredisplayedonthe
CRT, andvoltagedifferenceandvoltageratiobet-
ween themaredisplayedintheupper right onthe
CRT posteriortothecursormeasurementmode
display.
SettingtheCH2 VARIABLE controller(ffj)tothe
CAL position causes voltagedifferencemeasure-
ment,anda valuecalculatedinaccordance with
settingoftheCH2 VOLTS/DIV dial(9)is
displayedposteriortoAV2.
SettingtheCH2 VARIABLE controller(Q)to
theUNCALposition causes voltageratio
measurement, anda valuecalculatedonthe
basis of5 div.as100%isdisplayedposterior
tothe RATIO.
WhentheA cursorisbelowthe Z1REF
cursor, a minusvalueisdisplayed.
NOTE: SettingoftheMODEselectswitch(fj)to
theCH1position causes AV1mode
cursor measurement.
SettingoftheMODEselectswitch@ to
theX-YpositiondisablesAV2 mode
measurement.
AT: Twoverticalcursorlinesaredisplayedonthe
CRT, andtimedifferenceandtimeratiobet-
ween themaredisplayedintheupper right on
theCRTposteriortothecursormeasurement
modedisplay.
Settingthe SWEEP VARIABLE controller@ to
theCALposition causes timedifference
measurement, anda valuecalculatedinaccor-
dance with settingofthe SWEEP TIME/DIV dial
@) isdisplayedposteriortoAT.
Settingthe SWEEP VARIABLE controller@ to
theUNCALposition causes timeratiomeasure-
ment,anda valuecalculatedassuming that
5 div.is100%isdisplayedposteriortothe
RATIO.
WhentheA cursorisonthe left oftheA
REF cursor,a minusvalueisdisplayed.
NOTE: SettingoftheMODEselectswitch@
totheX-YpositiondisablesAT
modemeasurement.
1MT: Twoverticalcursorlinesaredisplayedonthe
CRT, andfrequencyandphasedifferencebet-
ween themaredisplayedintheupper right on
theCRTposteriortothecursormeasurement
modedisplay.
Settingthe SWEEP VARIABLE controller(g)to
theCALposition causes frequencymeasure-
ment,anda valuecalculatedinaccordance
with settingofthe SWEEP TIME/DIV dial@)is
displayedposteriorto 1 /AT.
Settingthe SWEEP VARIABLE controller@)to
theUNCALposition causes phasedifference
measurement, anda valuecalculatedassuming
that5 div. is360°isdisplayedposteriortothe
PHASE.
WhentheA cursorisonthe left oftheA
REF cursor,a minusvalueisdisplayed.However,
frequencyisdisplayedinanabsolutevalue.
NOTE: SettingoftheMODEselectswitch@ to
theX-Ypositiondisables1MTmode
measurement.
12

CONTROLS ANDINDICATORS
Fig. 5
REAR PANEL
©Z AXISINPUT
External intensitymodulation input; TTLcompatible.
Positive voltageincreasesbrightness,negativevoltage
decreases brightness.
®CH1PENOUT
Storage waveform output terminalforchannel-1pen
recorder.Settingthe DISPALY selectswitch@ on
the front paneltothe START positionstarts output.
WhentheMODEselectswitch(Q)issettotheADD
position,syntheticstoragewaveformofchannels1
and2 is output.
NOTE: WhentheMODEselectswitch® issettothe
CH2 position,channel-1waveformisnot out-
put.
@ CH2 PEN OUT
Storage waveform output terminalforchannel-2pen
recorder.Settingthe DISPLAY selectswitch© on
the front paneltothe START positionstarts output.
NOTE: WhentheMODEselectswitch(Q)issettothe
CH1 orADDposition,channel-2waveformis
not output.
@> Fuse Holder,LineVoltageSelector
Contains thelinefuse.Verifythattheproperfuseisin-
stalledwhenreplacingthelinefuse.
100 V,120V 1.2A
220 V,240V 0.8A
After pulling thepowercordplug from thepower
outlet, adjustthisselectortoyourlinevoltage.
(fj)PowerInputConnector
Inputterminalsofpowersupply.ConnecttheACcord
provided.
13

DIRECTIONS FORUSE
READOUT DISPLAY
(1)POSITIONSOFTHEDISPLAY
Displays thecalendar, scale factors,cursor
measurementdata,etc.atthefollowing
positionsontheCRT.
CH1 scale factor
Sweep scale factor
Fig. 6
(2)DISPLAYCONTENTS
1 Calendar/Clock
Displays a calendarandclockinthe following order:
Month-Day-Year-O'clock-Minute
Month: JAN, FEB, MAR, APR, MAY,JUN,JUL,
AUG, SEP, OCT,NOV,DEC
Day: 01to31
Year: 00to99
O'clock:00to23
Minute:00to59
These settingcanbechanged with theswitchlocated
onthe bottom. (Forresetting,refertotheMaintenance
section.)
2 Cursor Mode
The currentsettingcursormode,whichdependsonthe
combinationoftheoperationcontrols,isdisplayed.
zlV1, AV2, AT, MAT, RATIO, PHASE
3 CursorMeasuringData
The resultmeasuredbythetwocursorsisdisplayed.In
theMAT mode,whenthetwocursorsapproach
each otherandthemeasurementnearsits limit, a"?"
will bedisplayedin front ofthemeasureddata.This
shows that themeasureddataisnotavailable.
4CH1 Scale Factor
Displays theCH1vertical axis sensitivitytoonedivi-
sion. WhennotinCALmode,a ">"isdisplayedafter
CH1.
NOTE: ThisisnotdisplayedwhentheMODE control
®issettoCH2.
5 CH2 Scale Factor
Displays theCH2vertical axis sensitivitytoonedivi-
sion. WhennotinCALmode,a ">"jsdisplayedafter
CH2.
NOTE: ThisisnotdisplayedwhentheMODE control
@ issetto CH1.
6ADD
"+ " isdisplayedwhentheMODE control (Q)issetto
ADD.
7CH2INVERT
The inverted polarity ofCH2 "I" isdisplayedbycon-
trolling thet POSITION/PULL INV© .
8Sweep Scale Factor
Displays thesweeprangesetbythe SWEEP TIME/DIV.
Whenthe SWEEP VARIABLE isnotinCALmode,a ">"
is displayed.When TRIGGERING MODEissettoX-Y,
thisdisplayischangedto "X-Y".
14
Calendar/clock
Cursor mode
Cursor measurementvalue
CH2
invert
ADD
CH2 scale factor

OPERATION
INITIALSTARTING PROCEDURE
Priorto turning thepowerON,settheswitchesasinthe
drawingbelowinadvance.Fordetailsofswitchsetting,
refertothe item "Front Panel". Inthe case ofusinga pro-
be, refertotheOperationManualattachedtotheprobeas
wellastheapplicationexample"ProbeCompensation".
OFF
Power OFF-
[A]OPERATIONASA GENERAL-USE
OSCILLOSCOPE
(1)Normalsweepdisplayoperation
1. Press the POWER switch(\f) tosupplypower,andthe
POWER LED® lights.
2. A bright lineappearsinthe CRT center.Ifitisnotinthe
center,adjustits position tothecenter with the• POSI-
TION controller(T). Then,adjustthebrightness with
the INTENSITY controller® , andthefocus, with the
FOCUS controller(fl)asrequiredfor easy observation.
3-. Supply input signal into the CH1 INPUT jack(6). Rotate
the VOLTS/DIV dial(J)toadjustwaveformtoap-
propriatedimensions.
Set theMODEselectswitch(Q)toCH2,andthe TRIG-
GERING SOURCE selectswitch@ toCH2.Then,sup-
ply input signal into theCH2INPUTconnector@ . Its
waveformisdisplayedontheCRTinthesamepro-
cedures with channel1.
WhentheMODEselectswitchissettoADD,thecom-
positewaveformsofCH1andCH2(thealgebraicsum
of CH1 + CH2)isdisplayedonthe CRT. Inthisstatus,if
CH2 INVisengagedby pulling outtheCH2© POSI-
TION, thealgebraicdifferencebetweenCH1andCH2
(CH1 -CH2) will bedisplayed.
The sensitivityoftheADDedwaveformbecomesthe
same asthevalueindicatedby VOLTS/DIV provided
that thesame VOLTS/DIV valuehasbeensetforthe
waveformsofthetwochannels.
WhentheMODEselectswitch@ issettoALT,the
channel-1andchannel-2waveformsaredisplayedalter-
natelyineverysweep.Inthis case, the SOURCE select
switch@ shouldbesettothechanneltobe syn-
chronized.
4. Thedisplayonthescreen will probablybeunsynchroniz-
ed. Referto TRIGGERING procedurebelowforadjusting
synchronizationandsweepspeedto obtain a stable
displayshowingthedesirednumberofwaveform.
TRIGGERING
The input signalmustbeproperly triggered forstable
waveformobservation. TRIGGERING ispossiblethein-
putsignalINTernallytocreatea trigger or with anEX-
Ternally providedsignalof timing relationshiptothe
observedsignal,appliyingsucha signaltotheEXT.
TRIG INPUTjack@ .
(1) Theselectionofa signal that serves asthe trigger
signalismadeusingthe SOURCE switch@ .
•Internal Sync
Whenthe SOURCE selectionisinINT (CH1, CH2,
LINE), the input signalisconnectedtotheinternal
trigger circuit.Inthisposition,a partofthe input
signalfedtotheINPUT(§)or@ jackisapplied
from theverticalamplifiertothe trigger circuitto
cause the trigger signal triggered with the input
signaltodrivethesweep.
Settingthe SOURCE selectswitch@ to LINE
causes synchronization with commercialpowerfre-
quency.
* External Sync
Whenthe SOURCE selectionisinEXT,the input
signalatthe EXT TRIG INPUT@ jackbecomesthe
trigger. Thissignalmusthavea time orfrequency
relationshiptothesignalbeingobservedto syn-
chronizethedisplay.Externalsyncispreferedfor
waveformobservationinmanyapplications.Forex-
15
AC
Center Push
CH1
AUTO REAL
Rotatecounter-
clockwise upto
theveryend
Three o'clock
position
Center'
Push
Rotatecounter-
clockwise upto
theveryend
Push
1 ms/DIV
-CAL
Center Push
AC
Center Center
5V/DIV
•CAL
cm
5V/DIV
CAL
Center
Push
AC
Center
Fig. 7

ample.Fig.8 shows that thesweepcircuitisdriven
bythegatesignalwhenthegate signalintheburst
signalisappliedtothe EXT.TRIG INPUT jack.
Shows the input/output signals,wheretheburst
signalgenerated from thesignalisappliedtothein-
strumentundertest. Thus, accurate triggering can
beachieved without regardtothe input signalfedto
the INPUT (6)or@ jackso that nofurther trigger-
ingisrequiredevenwhenthe input signalisvaried.
Output signal from
amplifier,etc.
NOTE: Since theEXT input isDC-coupled,ifa DC
voltageofmorethan1.5V issuperimposed,
sync will notbeengaged.Inthis case, con-
necta capacitorofabout0.047/iFin series
anduseACcoupling.
(2) Afterthe SOURCE hasbeenset,the trigger point
can besetby rotating LEVEL/SLOPE control
(3) Settingofcouplingswitch
AC:
The trigger signaliscapacitivelycoupled,soitsDC
componentiscut,givinga stable trigger whichis
notaffectedbytheDCcomponent. With thisad-
vantage,this position ofthecouplingswitchiscon-
venientlyselectedforordinaryapplications.
However,ifthe trigger signalislowerthan10Hz,
the trigger signallevelbecomesattenuated,
resultingin difficulty intriggering.
HF RE J:
The trigger signalissupplied through a low-pass
filter toeliminatethehigh-frequencycomponent
(higherthan10kHz),givinga stable triggering with
low-frequencycomponent.Whenhigh-frequency
noiseissuperimposedoverthe trigger signalas
showninFig.9,thehigh-frequencynoiseiscutto
providea stable trigger.
Waveform with high frequencynoise
TriggersignalbyHFrejection
•TriggeringLevel
Trigger point onwaveformisadjustedbythe
LEVEL/PULLSLOPE ® control. Shows the rela-
tionshipbetweenthe SLOPE and LEVEL ofthetrig-
ger point. Triggeringlevelcanbeadjustedas
necessary.
SLOPE "-"RANGE
SLOPE " + " RANGE
LEVEL
*AutoTrigger
Whenthe TRIG MODE@ selectionisin AUTO, the
sweep circuitbecomesfree-runningas long asthere
is no trigger signal, permitting a checkofGND level.
Whena trigger signalispresent,the trigger point
can bedeterminedbythe LEVEL control forobser-
vationasinthenormal trigger signal.Whenthetrig-
gerlevel exceeds the limit, the trigger circuit
becomesfree-runningwherethewaveformstarts
running.
NOTE: If, with the TRIG MODEswitchsetto
NORM, no trigger signalis input orthetrig-
gersignal exceeds the triggering range,
sweepingisstoppedandtrace will notbe
displayed.
5. Adjustthe SWEEP TIME/DIV control @ to obtain an
appropriatedisplay.Nowa normalsweepdisplayisob-
tained.
(2)Sweepmagnificationoperation
Since merelyshorteningthesweep time tomagnifya por-
tion ofanobservedwaveformcanresultinthedesired por-
tion disappearingoffthe screen, suchmagnifieddisplay
shouldbeperformedifthesweepmagnificationfeatureis
used (referto "Sweep Magnification"orpage4.).
Usingthe< • POSITION control,adjustthedesired por-
tion ofwaveformtothe CRT. Pulloutthe PULLx 10MAG
control tomagnifythedisplay10times.Forthistypeof
displaythesweep time isthe SWEEP TIME/DIV setting
dividedby10.
(3)X-Yoperation
X-Y operationpermitstheoscilloscopetoperformmany
measurementsnotpossible with conventionalsweep
operation.
Set the TRIGGER MODEswitchtotheX-Yposition.In
thismode,channel1 becomestheY axis input andchannel
2 becomestheX axis input.
The X andY positionsarenowadjustedusingthe< •
POSITION @ and CH1 r POSITION controlsrespectively.
X andY sensitivityaresetbyusingthechannel2 and chan-
nel1 VARIABLE VOLTS/DIV controlsrespectively.
Fig. 9
EXT. TRIG
Triggersignal
(Gate signal)
Input signaito
amplifier,etc.
Fig. 8
Fig. 10
16

(4)Videosignalobservation
Settingthe COUPLING ® switch,totheTV FRAME orTV
LINE position permitsselectionofverticalorhorizontal
sync pulsesforsweep triggering whenviewingcomposite
videowaveforms.
This makesstable triggering invideosignalobservations
possibleregardlessofthe TRIG LEVEL control (fj).
Atmostpointsofmeasurement,a compositevideosignal
is ofthepolarity, that is,the sync pulsesarenegativeand
thevideoispositive.Inthis case, use" —" SLOPE.
Ifthewaveformistakenata circuit point wherethevideo
waveformisinverted,the sync pulsesarepositiveandthe
videoisnegative.Inthis case, use" + " SLOPE.
(5)Singlesweep
Single sweepisusedtypicallytosweepa nonperiodic
waveformonceonly.
1. Setthe TRIG MODEswitch@ toAUTOorNORM.For
use as trigger input, connecta signalofpracticallythe
same amplitudeandfrequencyasthesignaltobe
displayed. Thenseta trigger level.
2. Setthe TRIG MODEswitch@ to REST. The LED label-
ed "READY" will goon,indicatingthe trigger wait
state. The LED will gooff upon completionofA sweep.
3. Beingsure that the "READY" LEDislit,connectthe
signaltobeobserved,andsetthe TRIG MODE control
@ to REST so that the unit iswaitingfor trigger. Once
thesignalistriggered,it will besweptonceandthe
"READY" LED will gooff.
NOTE: Dualtracewaveformcannotbeobservedifthever-
ticalMODEissettoALT.Usethe CHOP modein-
stead.
2 Cursor measurement
4V1: SettheMODEselectswitch@ toALTand
the CURSORS selectswitch@ to4V1,
andtwohorizontalcursorlinesaredisplayedon
the CRT andvoltagedifferencebetweencursor
lines calculatedinaccordance with settingof
the CH1 VOLTS/DIV dial® isdisplayedinthe
upper right ontheCRT.BysettingtheCH1
VARIABLE controller® totheUNCALposi-
tion,voltage ratio isdisplayed.
Movethecursorstothepositionstobe
measured with the AREF controller© and
A controller@ .
AV2: Setthe CURSORS selectswitch@ toAV2,
voltagedifferenceinaccordance with theCH2
rangesettingisdisplayedintheupper right onthe
CRT similarly with theabove4V1.
AT: Setthe CURSORS selectswitch@ toAT,
andtwoverticalcursorlinesaredisplayedon
theCRTand time differencebetweenthecur-
sor linescalculatedbasedonthesweep scale
factordisplayedinthelower right isdisplayed
intheupper right. Bysettingthe SWEEP
VARIABLE controller@ totheUNCALposi-
tion, time ratio isdisplayed.
MAT: Setthe CURSORS selectswitch@)toMAT,
andtwoverticalcursorlinesaredisplayedonthe
CRT andfrequencybetweenthecursorlines
calculatedbasedonthesweep scale factor
displayedinthelower right isdisplayedintheup-
per right. Bysettingthe SWEEP VARIABLE con-
troller @ totheUNCALposition,phase dif-
ferenceisdisplayed.
[B] READOUTOPERATION
1 CRT surfacereadout
By rotating the INTEN (READOUT/STORE) controller
@ clockwiseuptotheveryend,charactersare
displayedonthe CRT. Adjustthebrightnessas necessi-
tyrequires.TheCH1andCH2 scale factorsare
displayedinthelowerpartoftheCRTinaccordance
with settingoftheMODEselectswitch(jj). Thesweep
scale factorisdisplayedinthelower right part.Bypull-
ingthe< • POSITION/PULLx 10MAGswitch© , a
tenth scale factorofthe SWEEP TIME/DIV dial@ is
displayed. Thecalendarisdisplayedintheupper left.
NOTE: Ifthe DATA-ON/OFF switchonthe bottom isset
totheOFFposition,thecalendarandclockare
notdisplayed.Tosetthecalendarandclock,
referto"MaintenanceandAdjustment".
Whenthereadoutvaluesaredisplayed,brilliance
modulation mayinfluencethereal-time
waveforminsome cases. Insucha case, rotate
the INTEN (READOUT/STORE) control (ffj) fully
counterclockwise.Thereadout function will be
turned OFF, andthebrilliance modulation onthe
real-timewaveform will disappear.
[C] OPERATION ASA DIGITAL OSCILLOSCOPE
(1) Innormaloscilloscopemode (DISPLAY MODE-REAL),
adjustthey (up/down) position so that theGND
luminancelineisatthecenterofthe CRT.
Inthiscondition,thestoragerangeis4 div. from the
centerofthe scale onthe CRT for both theupperand
lowersection.Ifa voltageexceeding±4div. is input,
thestoragewaveform will beclampedandnormal
waveformanalysis will notbeobtained.
Ifthisisthe case, setthevertical input couplertoAC
orDC,andcheck that thewaveformtobestoredin
presentonthe CRT.
Storagerange
Example whentheGNDluminancelineissetatthecenter
ofthe CRT in DISPLAY MODE-REAL
17
•GNDluminanceline
Fig. 11

Real-time waveform
Storage waveform
Example: Whenchecking that thewaveformispresenton
theCRTaftersettingthe AC-GND-DC switchto
AC modein DISPLAY MODE-REAL
2) Setthe DISPALY @ to STORE, and turn the STORE
INTEN © clockwise(todisplay READOUT and
STORAGE datasimultaneously)orcounterclockwise
(todisplay STORAGE dataonly).Adjusttheluminance
level, ifrequired.
Set the AC-GND-DC switchtoGNDmode,andadjust
the STORAGEPOSI so that thestorageGND
luminancelineisdisplayedatthecenteroftheCRT.
With thisoperation,thepositionsofthereal-time
waveformandthestoragewaveformaresetcorrectly.
(The real-timewaveformandthestoragewaveform
are superimposedcompletelywhenthe DISPLAY
MODE issettoR & S.)
Whenthe AC-GND-DC switchissettoACorDC,the
WRITE LED(@)lights,toshow that writing into
memoryisbeingperformed.When writing iscom-
pleted,thestoragewaveform will bedisplayed.Inthis
mode, writing into memoryorreadingout from
memoryisperformedatevery trigger signal.
0%-
Example: WhenthestorageGNDlineisdisplayedat
thecenteroftheCRT with the DISPLAY
MODE setto STORE
Example: Whenstoringa waveformaftertheAC-
GND-DC switchissettoAC with the
DISPLAY MODEsetto STORE
3) Whenthe DISPLAY @ issettoR & S, both the real-
time waveformandthestoragewaveform will be
displayed. Thestoragewaveformcanbeusedforread
outonly.Inthismode,comparisonbetweena real-time
waveformanda storagewaveformismadepossible.
Whenthereal-timewaveformismadepossible.When
thereal-timewaveformandthestoragewaveformare
superimposed, andthushardtodecipher,adjustthe
STORAGEPOSI toshiftthestoragewaveformtoa
position whereitcanbeobserved easily.
Inthis case, ifthereal-timewaveformisshirfted with
theY POSITION, it will be necessary tocheckthe
GND levelagain, because it will beshiftedwhenthe
waveformisstoredbysettingthe DISPLAY MODEto
STORE.
Example: Whenthereal-timewaveformandthe
storagewaveformaredisplayed
simultaneously with the DISPLAY MODEset
toR & S
4) Whenthe DISPLAY @ issetto PEN, onlythestorage
waveformisdisplayed.Thestoragewaveformcanbe
used toreadoutonly,and writing becomesimpossi-
ble. Observethewaveformsinthismode.
Aftermatchingthereal-timeGNDlevel with the
storageGND level, ifthe STORAGEPOSI isturned,the
GND levelofthestoragewaveform will bevaried.Be
careful ofthis point whenmeasuringthevoltage.
18
Fig. 12
Fig. 14
•Real-time
waveform
-Strage
waveform
Fig. 15
Storage GNDluminanceline
Fig. 13

-Storage waveform
Storage
waveform
Example: Whenfreezingthestoragewaveformusing
thewritepen with the DISPLAY MODEset
to STORE
NOTE: Examples thenthestoragewaveformis
clampedby inputting anincorrectvoltageare
as follows:
Storage range
Fig. 19
Example: Whenthestoragewaveformisclampedby
adjustingthe• POSITION andthe
STORAGE POSI tosetthewaveformtothe
centerofthe CRT. Withthe DISPLAY MODE
set toR & S,andafterstoringthewaveform
in DISPLAY MODE-STORE, inthiscondition
NOTE: Whenstoring,ifthe SWEEP TIME range
(samplingclock)issetatanimproperlevel
(when thesampling point islowerby2 points
tooneperiod)againstthe input frequency,an
aliasing errorwilloccur.Hereisanexamplein
thefollowing:Assumingthatthe input frequen-
cy isconstantat10kHz,whenthe SWEEP
TIME issetto20ms/div(1samplingerrorwill
occur with thestoredwaveform).
WhentheGNDluminancelineissetatthe2 div. position,
with the DISPLAY MODEsetto REAL
Storage range
Storage waveformintheproperrange(waveform with
200 samplesperperiod)
Real-taime
"waveform
Fig. 16
Fig. 17
GND luminanceline
cursor
REF cursor
Fig. 20
Real-time waveform with a 10kHz input frequency
cursor-
-Real-timewaveform
Fig. 18
Whenpartofthewaveformisoutofthestoragerange
afterthe AC-GND-DC switchissettoAC, with the
DISPLAY MODEsetto REAL
REF
cursor
Fig. 21 19

Real-time waveformwhenthe SWEEP TIME issetto
1 /200 with a 10kHz input frequency
0'
Storage waveforminanimproperrange(whenaliasinger-
roroccurs with 1 sampleperperiod)
Whenthe DISPLAY MODEissettoR & S,thestorage
waveformshowsthealiasingerror
2. Whenstoringa waveformbeforea triggersignal(PRE
TRIG storage)
1) Setthe DISPLAY @ to STORE, andsetthe PRE TRIG
©to2.5,5,or7.5div.
2) Setthe TRIGGERING MODE(§)to SINGLE-RESET to
set theoscilloscopetotriggersignalwaitingstatus.
(Afterthe WRITE @ LED lights,the READY @ LED
lights.Whenthe READY LEDislit,itshowsthatthe
oscilloscopeisintriggersignalwaitingmode.)
3) Whena triggersignalisgenerated,thewaveformwill
be written into memoryforthespecifiedperiod,and
thestoragewaveformwillbedisplayedontheCRT
after writing iscompleted.Atthistime,the5 div.posi-
tion showsthetrigger point, andtheposition5 div.to
the left ofitshowsthestatusbeforethetriggersignal
was generatedifthe PRE TRIG @ wassetto5 div.
NOTE: This modeshouldbestartedmanuallyto
observe thewaveformbeforetriggering.
DISPLAY : STORE
TRIGGERING MODE:
SINGLE-RESET
PRE TRIG : 5 DIV
Triggering point
Example: Whenstoringa burstwave with thePRE
TRIG setto5 div.
3. WhenusingtheExpandedRange (SWEEP TIME
10 /is/div~0.5 /Lts/div.)
NOTE: Afterstoringthewaveform,whenthe SWEEP
TIME rangeisvaried,the READOUT displaywill
notcoincideinthe following cases.
Whenthe SWEEP TIME rangeisvaried with the
storagewaveformwriterangesettobetween
1 s/divand50/is/div,andwhenthe SWEEP
TIME rangeissettolowerthan20/ts/div with
thestoragewaveformwriterangesettobet-
ween 20/is/divand0.5jts/div,the SWEEP
TIME/DIV values, AT andMAT, will
notcoincide.
The expansion point willbeexpandedusingthe
triggering point asthecenter.
20
Fig. 22
Waveformbefor triggering
Waveformafter triggering
Fig. 25
Fig. 23
Fig. 24