Kenwood CS-2075 User manual

DELAYEDSWEEPOSCILLOSCOPE
CS-2075
70MHz
QUAD-TRACEOSCILLOSCOPE
INSTRUCTIONMANUAL

CONTENTS
SAFETY2
FEATURES3
SPECIFICATIONS3
PREPARATIONFORUSE6
CONTROLSANDINDICATORS
FRONTPANEL7
REARPANEL13
OPERATION
[1]NORMALSWEEPDISPLAYOPERATION14
[2]MAGNIFIEDSWEEPOPERATION15
[3]DELAYEDSWEEPOPERATION15
[4]ALTERNATINGSWEEPOPERATION16
[5]X-YOPERATION16
[6]SINGLESWEEPOPERATION16
[7]DUALANDQUADTRACEOPERATION16
[8]CASCADEDOPERATION17
APPLICATION
PROBECOMPENSATION18
TRACEROTATIONCOMPENSATION18
DCVOLTAGEMEASUREMENTS18
MEASUREMENTOFTHEVOLTAGEBETWEEN
TWOPOINTSONA WAVEFORM19
ELIMINATIONOFUNDESIREDSIGNAL
COMPONENTS19
TIMEMEASUREMENTS• 20
FREQUENCYMEASUREMENTS20
PULSEWIDTHMEASUREMENTS21
PULSERISETIMEANDFALLTIME
MEASUREMENTS21
TIMEDIFFERENCEMEASUREMENTS22
PHASEDIFFERENCEMEASUREMENTS23
RELATIVEMEASUREMENTS23
PULSEJITTERMEASUREMENTS25
SWEEPMULTIPLICATION25
DELAYEDSWEEPTIMEMEASUREMENTS....26
PULSEWIDTHMEASUREMENTSUSING
DELAYEDSWEEP26
FREQUENCYMEASUREMENTSUSING
DELAYEDSWEEP27
PULSEREPETITIONTIME27
USINGDELAYEDSWEEPFORMEASUREMENT
OFRISETIMESANDFALLTIMES28
TIMEDIFFERENCEMEASUREMENTS
USINGDELAYEDSWEEP28
X-YOPERATION29
QUADTRACEAPPLICATION30
ACCESSORIES
STANDARDACCESSORIESINCLUDED31
INSTALLINGPROBEHOLDER31
OPTIONALACCESSORIES31
MOUNTINGTHEPROBEPOUCH(MC-78)32
SAFETY
SymbolinThisManual
Thissymbolindicateswhereapplicablecautionaryor
otherinformationistobefound.
PowerSource
Thisequipmentoperatesfroma powersourcethatdoes
notapplymorethan250Vrmsbetweenthesupply con-
ductorsorbetweeneithersupplyconductorandground.
Aprotectivegroundconnectionbywayofthegrounding
conductorinthepowercordisessentialforsafeoperation.
GroundingtheProduct
Thisequipmentisgroundedthroughthegrounding con-
ductorofthepower cord. Toavoidelectricalshockplug
thepowercordintoa properlywiredreceptaclebefore
connectingtotheequipmentinputoroutputterminals.
UsetheProperPowerCord
Useonlythepowercordandconnectorspecifiedforyour
product.
UsetheProperFuse
Toavoidfirehazard,usea fuseofthecorrecttype.
DonotOperateinExplosiveAtmospheres
Toavoidexplosion,donotoperatethisproductinanex-
plosiveatmosphere.
DonotRemovecoverorPanel
Toavoidpersonalinjury,donotremovethecoveror pan-
el. Referservicingtoqualifiedpersonnel.
2

FEATURES
•Smallandcompactwithhigh1 mV/divsensitivityand
70MHzbandwidth(1mV/divwhenX5GAINfunction
isusedand500/zV/divforcascadedoperation,channel
1tochannel2).
•Bright150mmrectangularCRTwithaninternalgrati-
culeanda 12kVacceleratingpotential.
•Verticalaxisiscapableofsingle,dualaswellasquad-
tracedisplay.
•The20MHzbandwidthlimiterincorporatedeliminates
high-frequencynoisesandstabilizessignalwaveforms
displayed.
•Singlesweep,X10magnification,delayedsweepand
alternatingsweepcapabilityareprovided.
•Fast50ns/divsweepspeed(5ns/divwithX10magnifi-
cation).
•Accuraciesofverticalaxisandhorizontalsweepingare
ashighas± 2%at10~ 35°C.
•TheVIDEOsynchronizationcircuitpermitstoobserve
videosignaleasily.
•Thedualintensitycontrolcircuitpermitstovaryinten-
sitiesseparatelyforA andB sweeps.
•A switchingtypepowersupplyprovidesstableopera-
tionwithvaryingpowersources(90V~ 264V).
•A convenientchannel1 samplingoutputisprovided.
•CPUcontrolledswitchingwithLEDlightedpushbutton
switchesprovideseasy.TheLEDoftheswitches indi-
cateasfollowswhensupplyingpowerstarts.
VerticalMODE: CH1
HORIZDISPLAY: A
TRIGMODE: AUTO
SPECIFICATIONS
CRT
Model: 150LTM31
Type: Rectangular,withinternal
graticule
Acceleratingpotential:12kV
Displayarea:8 divx 10div(1div= 1 cm)
VERTICALAXIS(Channel1 andChannel2 identical
specifications)
Sensitivity5mV/divto5V/div(X1mode)
1mV/divto 1 V/div(X5mode)
500/zV/div(Cascadedopera-
tion, CH1toCH2)
Accuracy:±2%(10~ 35°C)
±5%(0~ 50°C)
±8%(Cascadedoperation,
CH1toCH2)
Attenuator:5mV/divto5V/divin 1 -2-5
sequence,all10rangeswith
fineadjustmentbetweensteps.
Inputresistance:1 MQ ± 1 %
Inputcapacitance:Approx22pF
Frequencyresponse
DC: DCto70MHz(-3dB)
DCto90MHz(-6dB)
DCto40MHz(-3dB)
(Cascadedoperation,CH1to
CH2)
DCto50MHz(-3dB)(X5
mode)
AC: 5 Hzto70MHz(-3dB)
5Hzto90MHz(-6dB)
7Hzto40MHz(-3dB),
(Cascadedoperation,
CH1toCH2)
5Hzto50MHz(-3dB)(X5
mode)
Risetime:5ns(X1mode)
7ns(X5mode)
Signaldelaytime:Approx10nsasdisplayed
onCRTscreen
Crosstalk:-40dBminimum
Operatingmodes:
CH1CH1,singletrace
CH2CH2,singletrace
DUALCH1andCH2,dualtrace
ADDCH1+ CH2(added)display
QUADCH1~ CH4,quadtrace
ALTDualorquadtracealternating
CHOPDualorquadtracechopped
CHOPfrequency:Approx250kHz
ChannelpolarityNormalorinverted,CH2 only
inverted
AMaximuminputvoltage:
800Vp-por400V(dc+ ac
peak)
3

SPECIFICATIONS
Maximumundistorted
amplitude:8 divisions,minimum(DCto
70MHz)
Bandwidthlimiting:Verticalsystembandwidth
withthe20MHzBWpushbut-
tonswitchpushedisapproxi-
mately20MHz
VERTICALAXIS(Channel3 andChannel4 common
specifications)
Sensitivity0.1V/div,± 2%
Inputresistance:1 MQ ± 1 %
Inputcapacitance:Approx.22pF
Inputcouplingmode:DConly
Frequencyresponse:DCto70MHz(-3dB)
DCto90MHz(-6dB)
Risetime:5ns
Signaldelaytime:SameasCHIandCH2
Maximumallowablevoltage
DCcomponent:±0.5Vorless(ac+ dc)
ACcomponent:1 Vp-porless
AMaximuminputvoltage:400V(dc+ acpeak)
HORIZONTALAXIS(Channel2 input)
Modes:X-Ymodeisswitchselectable
(HORIZDISPLAY)
X-Ymode:CH1:Y-axis
CH2: X-axis
Sensitivity:SameasCH2
Accuracy:SameasCH2
Inputresistance:SameasCH2
Inputcapacitance:SameasCH2
Frequencyresponse:
DC: DCto5 MHz(-3dB)
DCto7 MHz(-6dB)
AC: 5 Hzto5 MHz(-3dB)
5Hzto7 MHz(-6dB)
X-Yphasedifference:Lessthan3°at100kHz
SWEEP
Modes(switchablewiththeHORIZ
DISPLAYswitch):
AA sweep
ALTB sweepwaveformisdis-
playedasanintensifiedpor-
tionoftheA sweepandB
sweepalternating
A-INT-BB sweepwaveformisdis-
playedasanintensifiedpor-
tionoftheA sweep.
BDLY'DDelayedB sweep
X-YX-Ydisplaymode
Asweeptime:50ns/divto 0.5s/div in22
ranges,in 1 -2-5sequence,
verniercontrolprovides
fullyadjustablesweeptime
betweensteps.
Bsweeptime:50ns/divto50ms/divin19
ranges,in1-2-5sequence.
Accuracy±2%(10~ 35°C)
±6%(0~ 50°C)
Sweepmagnification:X10±5%(10~ 35°C)
±7%(0~ 50°C)
Linearity:50ns/divto 0.5s/div ±3%
(±5%withX10magnifica-
tion)
HOLDOFF:ContinuouslyadjustableforA
sweepfromNORMtoX5
Traceseparation:B positionableupto4
divisionsseparatedfromA
sweep,continuouslyadjusta-
ble.
Delaymethod:Continuousdelay.Triggerde-
lay
Delaytime:0.2to10timesthesweep
timefrom200nsto0.5s, con-
tinuouslyadjustable.
Timedifferencemeasurementaccuracy:
±2% (10~ 35°C)
±4%(0~ 50°C)
Delayjitter: 1 /20000ofthefullscale
sweeptime.
TRIGGERING
ATRIG
Atriggermodes:AUTO,NORM,SINGLE,
Triggersource:V MODE,CH1,CH2,EXTCH3
Couplingmodes:AC, LFREJ,HFREJ, DC,VIDEO
VIDEO-LINEsyncautomatical-
lyselectedatsweeptimesof
50/is/divto50ns/div.
VIDEO-FRAMEsyncautomati-
callyselectedatsweeptimes
of 0.5s/div to0.1ms/div.
Triggerlevel:± 90°adjustable
Polarity:+/-
4

SPECIFICATIONS
BTRIG
Triggersource:CH1,CH2,EXTCH4
STARTSAFTERDELAY
Couplingmodes:AConly
Triggerlevel:± 90°adjustable
Polarity:+/-
TRIGGERSENSITIVITY(AANDB)
COUPLING FREQRANGE MINIMUMSYNCAMPLITUDE COUPLING FREQRANGE INT EXT
DC DC~ 20MHz
DC~ 70MHz 0.5div 1.5div 50mV
210mV
AC SameasforDCbutwithincreasedminimumlevel
forbelow20Hz.
AC
HFREJ Increasedminimumlevelbelow20Hzandabove 30kHz.
AC
LFREJ
Increasedminimumlevelbelow30kHz.
VIDEO FRAME/LINE 0.5div 50mV
AUTO: Sameasabovespecificationsforabove50Hz.
Jitter:1nsmaximum
(At70MHz)5ns/div(X10MAGon)
CALIBRATINGVOLTAGE
1kHz± 3%Positivesquarewave
1Vp-p±1%(10~ 35°C)
±2%(0~ BOX)
INTENSITYMODULATION
Inputsignal:TTLlevel,intensitydecreasing
withmorepositivelevels
Inputimpedance:Approx.10kQ
Usablefrequencyrange:DCto10MHz
AMaximuminputvoltage:50V(dc+ acpeak)
VERTICALAXISOUTPUT(SampledCH1output)
Outputvoltage:50mVp-p/div(into50D load)
Outputimpedance:Approx.50X2
Frequencyresponse:DCto70MHz(-3dB)
(into50X2load)
TRACEROTATIONElectrical,adjustable
POWERSUPPLY
Linevoltage:90~ 264V
Linefrequency:45~ 400Hz
Powerconsumption:Approx.55W(at100V,50Hz)
DIMENSIONS
Width: 284mm(328mm)
Height:138mm(150mm)
Depth: 400mm(471mm)
() dimensionsincludepro-
trusionsfrombasiccaseout-
linedimensions.
WEIGHT7.4kg
ACCESSORIES
PC-29Probes2
Instructionmanual1
ACpowercord1
Probeholder1
OPTION
Accessorybag(MC-78)
Panelcover(MD-85)
ENVIRONMENT
Operatingtemperatureand
Humidityforguaranteed
specifications:10~ 35°C,85%maximumRH
Fulloperatingrange:0 ~ 50°C,90%maximumRH
Storagetemperatureand
humidityrange:-20~ +70°C
80% maximum
Altitude:
Operating:5000m
Non-operating:12000m
•Circuitandratingsaresubjecttochangewithoutnoticedueto
developmentsintechnology.
5

PREPARATIONFORUSE
SAFETY
Beforeconnectingtheinstrumenttoa powersource,care-
fullyreadthefollowinginformation,theverifythatthe
properpowercordisusedandtheproperlinefuseisin-
stalledforpowersource.Ifthepowersourceisnotap-
pliedtoyourproduct,contactyourdealer.Ifthepower
cordisnotappliedforspecifiedvoltage,thereisalwaysa
certainamountofdangerfromelectricshock.
Linevoltage
Thisinstrumentoperatesusingac-powerinputvoltages
that90Vto264Vatfrequenciesfrom45Hzto400Hz.
Powercord
Thegroundwireofthe3-wireacpowerplugplacesthe
chassisandhousingoftheoscilloscopeatearthground.
Donotattempttodefeatthegroundwireconnectionor
floattheoscilloscope;todosomayposea greatsafetyha-
zard. Theappropriatepowercordissuppliedbyanoption
thatisspecifiedwhentheinstrumentisordered.
TheoptionalpowercordareshowninFig40.
Linefuse
Thefuseholderislocatedontherearpanelandcontains
thelinefuse.Verifythattheproperfuseisinstalledbyre-
placingthelinefuse.
5.Alwaysusetheprobegroundclipsforbestresults.Do
notuseanexternalgroundwireinlieuoftheprobe
groundclips,asundesiredsignalsmaybeintroduced.
6.Operationadjacenttoequipmentwhichproduces
strongacmagneticfieldsshouldbeavoidedwherepos-
sible. Thisincludessuchdevicesaslargepowersup-
plies, transformers,electricmotors,etc.,thatareoften
foundinanindustrialenvironment.Strongmagnetic
shieldscanexceedthepracticalCRTmagneticshield-
inglimitsandresultinterferenceanddistortion.
7.Probecompensationadjustmentmatchestheprobe
totheinputofthescope.Forbestresults,compen-
sationofprobeshouldbeadjustedinitially,thenthe
sameprobealwaysusedwiththeinputofscope.
Probecompensationshouldbereadjustedwhenever
aprobefroma differentscopeisused.
8.TheLEDsoftheswitchesindicateasfollows
whensupplyingpowerstarts.
VerticalMODE:CH1,
HORIZDISPLAY:A
TRIGMODE:AUTO
EQUIPMENTPROTECTION
1. Neverallowa smallspotofhighbrilliancetoremain
stationaryonthescreenformorethana fewseconds.
Thescreenmaybecomepermanentlyburned.A spot
willoccuronlywhenthescopeissetupforX-Yopera-
tionandnosignalisapplied.Eitherreducetheintensity
sothespotisbarelyvisible,switchbacktonormal
sweepoperationwhennosignalisapplied,orsetup
thescopeforspotblanking.
2. Nevercovertheventilatingholesonthetopoftheos-
cilloscope, asthiswillincreasetheoperatingtempera-
tureinsidethecase.
3.Neverapplymorethanthemaximumratingtotheoscil-
loscopeinputjacks.
CH1, CH2INPUTjacks:800Vp-por400V(dc+ ac
peak)
CH3, CH4INPUTjacks:400V(dc+ acpeak)
ZaxisINPUTjack:50V(dc+ acpeak)
Neverapplyexternalvoltagetotheoscilloscopeoutput
terminals.
4. Alwaysconnecta cablefromtheearthground(GND)
jackoftheoscilloscopetothechassisoftheequipment
undertest.Withoutthiscaution,theentirecurrentfor
theequipmentundertestmaybedrawnthroughthe
probeclipleadsundercertaincircumstances.Such
conditionscouldalsoposea safetyhazard,whichthe
groundcablewillprevent.
6

CONTROLS ANDINDICATORS
Fig. 1
FRONT PANEL
VERTICAL AXIS CONTROL
©VOLTS/DIVControl
Verticalattenuatorforchannel1;providesstepad-
justmentofverticalsensitivity.WhentheVARIABLE
controlisturnedtotheCALposition,thevertical sen-
sitivityiscalibratedin10stepsfrom5V/divto5 mV/
div.
ForX-Yoperationthiscontrolprovidesstepadjust-
mentofverticalsensitivity.
©VARIABLE,PULLX5GAINControls
VARIABLE;
Rotationprovidesfinecontrolofchannel1 vertical
sensitivity.Inthefullyclockwise(CAL)position,the
verticalattenuatoriscalibrated.ForX-Yoperation,
thiscontrolservesastheY axisattenuationfinead-
justment
PULLX5GAIN;
Whenpulledout,theVOLTS/DIVsettingismultiplied
byfiveandforX-YoperationtheY-axissensitivityis
multipliedaccordingly.InX5GAINmode,thevertical
gainisincreasedandthetracebecomesthickness.
©| CH1POSITION,| CH3Controls
$CH1POSITION;
Rotationadjustsverticalpositionofchannel1 trace.
InX-Yoperation,rotationadjustsverticalpositionof
display.
7
|CH3;
Rotationadjustsverticalpositionofchannel3 trace
onthescreen.
©AC-GND-DCswitch
Three-positionleverswitchwhichoperatesas fol-
lows:
AC: Blocksdccomponentofchannel1 input sig-
nal.
GND: Openssignalpathandgroundsinputto verti-
calamplifier.Thisprovidesa zero-signalbase
line, thepositionofwhichcanbeusedasa re-
ferencewhenperformingdcmeasurements.
DC: Directinputofacanddccomponentofchan-
nel1 inputsignal.
©INPUTJack
Verticalinputforchannel1 traceinnormalsweep
operation. VerticalinputforX-Yoperation.
©VOLTS/DIVControl
Verticalattenuatorforchannel2;providesstepad-
justmentofverticalsensitivity,VARIABLEcontrolis
turnedtotheCALposition,theverticalsensitivity cali-
bratedin10stepsfrom5V/divto5mV/div.ForX-Y
operationthecontrolprovidesstepadjustmentofhor-
izontalsensitivity.

CONTROLSANDINDICATORS
©VARIABLE,PULLX5GAINControls
VARIABLE;
Rotationprovidesfinecontrolofchannel2 vertical
sensitivity.Inthefullyclockwise(CAL)position,the
verticalattenuatoriscalibrated.ForX-Yoperation,
thiscontrolservesastheX axisattenuationfinead-
justment
PULLX5GAIN;
WhenpulledouttheVOLTS/DIVsettingismultiplied
byfiveandforX-YoperationtheX-axissensitivityis
multipliedaccordingly.InX5GAINmode,thevertical
gainisincreasedandthetracebecomesthickness.
(DCH2* POSITIONX-Y* CH4Controls
*CH2POSITION;
Rotationadjustsverticalpositionofchannel2 trace.
InX-Yoperationadjustshorizontalpositionofdisplay.
*CH4;
Rotationadjustsverticalpositionofchannel4 trace
onthescreen.
(DAC-GND-DCSwitch
Three-positionleverswitchwhichoperatesas fol-
lows:
AC: Blocksdccomponentofchannel2 input
signal.
GND: Openssignalpathandgroundsinputto
verticalamplifier.Thisprovidesa zero-
signalbaseline,thepositionofwhichcan
beusedasa referencewhenperforming
dcmeasurements.
DC: Directinputofacanddccomponentof
channel2 inputsignal.
®INPUTJack
Verticalinputforchannel2 traceinnormalsweep
operation. HorizontalinputinX-Yoperation.
®MODESwitchAssembly
Usedtoselectthebasicoperatingmodesofthe osci-
lloscope.LED'sindicatewhatmodehasbeenselect-
ed.
CH1: Onlytheinputsignaltochannel1 isdis-
playedasa singletrace.
CH2: Onlytheinputsignaltochannel2 isdis-
playedasa singletrace.
DUAL:Whenengagedthisbutton,ifeitherALT
orCHOPswitchispushedin,dualtrace
modepresentstracesofchannel1,
channel2 inputwaveforms.
ADD: Channel1 andchannel2 inputsignals
areaddedandthesumisdisplayedasa
singletrace.WhentheCH2INVbutton
isengaged,thewaveformfromchannel
2issubtractedfromthechannel1 wave-
formandthedifferenceisdisplayedasa
singletrace.
QUAD: Whenengagedthisbutton,ifeitherALT
orCHOPswitchispushedin,quadtrace
modepresentstracesofchannel1
throughchannel4 inputwaveforms
ALT:Alternatesweepisselectedregardlessof
sweeptimeasdualtrace(channel1 and
channel2)orquadtrace(channel1
throughchannel4)
CHOP: Chopsweepisselectedregardlessof
sweeptimeatapproximately250kHzas
dualtrace(channel1 andchannel2)or
quadtrace(channel1 throughchannel
4).
CH2INV:IntheNORMposition(buttonreleased),
thechannel2 signalisnon-inverted.In
theINVposition(buttonengaged),the
channel2 signalisinverted.
20MHzBW:Limitstheverticalbandwidthtoapproxi-
mately20MHzwhenengagedthisbut-
ton.
NOTE:
Thevariousverticalmodesettingsarerelatedto hori-
zontalmodeandtriggersource.Seethesectionson
HORIZDISPLAYandSOURCEfora descriptionofthis
relationship.
8

CONTROLSANDINDICATORS
POWERSUPPLY/CRTDISPLAYCONTROLS
©A INTENSITY,B INTENSITYControls
AllowsadjustmentofintensityfortheA sweepandB
sweeprespectively.
AINTENSITY;
AdjuststhetraceintensityfortheA sweepand
thedisplayintensityforX-Yoperation.
BINTENSITY;
AdjuststheintensityoftheB sweep.
®POWER,SCALEILLUMControls
Fullycounterclockwiserotation(offposition)turnsoff
oscilloscope.Clockwiserotationturnsonoscillos-
cope. Furtherclockwiserotationofthecontrolin-
creasestheilluminationlevelofscale.
®LEDPilotLamp
Indicatesthatthepowersupplyhasbeenturnedon.
©ASTIGControl
Pulloutandrotatethisknob.Astigmatismadjust-
mentprovidesoptimumspotroundnesswhen
usedinconjunctionwithFOCUScontrolregard-
lessintensitycontrol.
®FOCUSControl
Usedtoadjustthetraceforoptimumfocus.
Auto-focuscircuitkeepswaveforminfocuswith
changesinintensity.
®TRACEROTATIONControl
Electricallyrotatestracetohorizontalposition.
Strongmagneticfieldsmaycausethetracetobetilt-
ed. Thedegreeoftiltmayvaryasthescopeismoved
fromonelocationtoanother.Inthesecases,adjust
thiscontrol.
©CAL,1Vp-p,w 1 kHzTerminal
Provides1kHz, 1 Voltpeak-to-peaksquarewave sig-
nal. Thisisusefulforprobecompensationadjust-
ment
®«LGNDTerminal/Bindingpost.
Groundterminal- useittoconnecttheinstrumentto
theearthground.
9
Fig. 2

Fig. 3
HORIZONTAL AXIS CONTROLS
© HORIZ DISPLAY SWITCH ASSEMBLY
Used to select the horizontaldisplaymode.LED's
indicatewhatmode has beenselected.
A:Only A sweep is operativewith theB sweep
dormant.
ALT: A sweepalternateswith theB sweep. For
thismode of operation, theB sweep ap-
pears asan intensifiedsection ontheA
sweep.
A-INT-B: Duration oftheB sweepappears asanin-
tensifiedsection ontheA sweep.
BDLY'D:Onlydelayed B sweep is operative.
X-Y:Channel 1 becomes the Y-axis and channel
2becomes the X-axis forX-Y operation.
Thesettings ofthe verticalMODE and TRIG
MODEswitcheshave no effect.
© A SWEEPTIME/DIV, B SWEEPTIME/DIVCon-
trols
ASWEEPTIME/DIV;
Horizontalcoarse A sweeptimeselector.
Selectscalibratedsweeptimes of50 ns/div to0.5
s/div in22 stepswhen A VARIABLEcontrol ® isset
to CAL position(fullyclockwise).
BSWEEPTIME/DIV;
Horizontalcoarse B sweeptimeselector.
Selectssweeptimes of50 ns/div to50 ms/div in19
steps. B sweeptimeselector is constructed to make
itpossible tosettheB sweeptimeslowerthan A
sweeptime. No fineadjustment is available fortheB
sweeptime.
<§> A VARIABLEControl
Fine A sweeptimeadjustment. Inthe fullyclockwise
(CAL)position, theA sweeptime is calibrated.
@DELAYTIMEMULTControl
Adjusts the starttime oftheB sweep to somedelay
timeafter the start oftheA sweep.
Thedelaytime maybesetto valuesbetween 0.2and
10times the setting oftheA SWEEPTIME/DIV con-
trol.
10