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3.PRECAUTIONSBEFOREOPERATINGTHEOSCILLOSCOPE
3.1UnpackingtheOscilloscope
Theoscilloscopeisshippedfromthefactoryafterbeingful1yinspectedandtested.Uponreceivingtheinstrument,
immediatelyunpackandinspectitforanydamagesthatmighthavebeensustainedduringtransportation.Ifanysignof
damageisfound,immediatelynotifythebearerand/orthedealer.
3.2CheckingtheLinevoltage
TheseoscilloscopeswilloperateonAC230Vor110Vsetbymanufactory.BeforeconnectingthepowerplugtoanAC
lineoutlet,makesurethevoltageselectorissettothecorrectpositioncorrespondingtothelinevoltage.Notethe
oscilloscopemaybedamagedifitisconnectedtothewrongAClinevoltage.
Replacetherequiredfusesshownbelow.
LinevoltageFuse
T0.5A
AC230V250V
T1.0A
AC110V250V
WARNING.Toavoidpersonalinjudisconnectthepowercordry,
beforeremovingthefuseholder
WARNING.Toavoidelectricalshockthepowercordprotective
groundingconductormustbeconnectedtoground.
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!
Range
207~253
109~121
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3.3Environment
Thenormalambienttemperaturerangeofthisinstrumentis0to40C(32to104F).Operationoftheinstrumentabovethis
temperaturerangemaycausedamagetothecircuits.
Donotusetheinstrumentinaplacewherestrongmagneticorelectricfieldexists,suchfieldsmaydisturbthemeasurement.
3.4EquipmentInstallation,andOperation
Ensurethereisproperventilationfortheholeventsintheoscilloscopecase.
Ifthisequipmentisusedinamannernotspecifiedbythemanufacturer,theprotectionprovidedbytheequipmentmaybe
impaired.
3.5CRTIntensity
TopreventpermanentdamagetotheCRTphosphor,donotmaketheCRTtraceexcessivelybrightorleavethespot
stationaryforanunreasonablylongtime.
3.6WithstandingvoltagesofInputTerminals
Thewithstandingvoltagesoftheinstrumentinputterminalsandprobeinputterminalsareasshowninthefollowingtable.
Donotapplyvoltageshigherthantheselimits.Whensetprobeswitchat1:1,themaximumeffectivereadoutis40Vpp
(14Vrmsatsinewave).Whensetprobeswitchat10:1,themaximumeffectivereadoutis400Vpp(140Vrmsatsinewave).
IfanACvoltagewhichissuperimposedonaDCvoltageisapplied,themaximumpeakvalueofCHlandCH2inputvoltages
mustnotexceed+or-300V.SoforACvoltageswithameanvalueofzerovoltthemaximumpeaktopeakvalueis600V.
Toavoidinstrumentdamage,
donotexceedmaximuminputvoltages.
Maximuminputvoltagesmusthave
frequencieslessthan1KHz.
CAUTION.
InputterminalMaximuminputvoltage
CH1,CH2,inputs400V(DC+ACpeak)
EXTTRLGINinput400V(DC+ACpeak)
Probeinputs600V(DC+ACpeak)
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