Mastech MS8268 - General Instructions and Safety; Safety Precautions; Measurement Category Precautions; Safe Operation Guidelines

*Donotapplyanyvoltagemeasurementbetweenthe10A
terminalandtheCOMterminal.
*Cautionwhenworkingwithvoltagesabove60Vdcor30Vac
rms.Suchvoltagesposeashockhazard.
*Whenusingtheprobes,keepyourfingersbehindthefinger
guards.
*Whenmakingconnections,connectthecommontestlead
beforeconnectingthelivetestlead;whendisconnecting,
disconnectthelivetestleadbeforedisconnectingthe
commontestlead.
*Beforechangingfunctions,disconnectthetestleadsfrom
thecircuitundertest.
*Foralldcfunctions,includingmanualorauto-ranging,to
avoidtheriskofshockduetopossibleimproperreading,
verifythepresenceofanyacvoltagesbyfirstusingtheac
function.Thenselectadcvoltagerangeequaltoorgreater
thantheacrange.
*Disconnectcircuitspoweranddischargeallhigh-voltage
capacitorsbeforetestingresistance,continuity,diodes,or
capacitance.
*Beforemeasuringcurrent,checkthemeter'sfuseandturn
offpowertothecircuitbeforeconnectingthemetertothe
circuit.
*Neverperformresistanceorcontinuitymeasurementson
livecircuits.
*InTVrepairwork,orwhencarryingoutmeasurementson
powerswitchingcircuits,rememberthathighamplitude
voltagepulsesatthetestpointscandamagethemultimeter.
UseofaTVfilterwillattenuateanysuchpulses.
*Usethree1.5VAA A batteries,properlyinstalledinthe
Meter'sbatterycase,topowertheMeter.
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*Replacethebatteriesassoonasthebatteryindicator(
)appears.Withalowbattery,theMetermight
producefalsereadingsthatcanleadtoelectricshockand
personalinjury.
*Donotmeasurevoltagesabove600VinCategoryIII,or
1000VinCategoryIIinstallations.
1.1.3
1.1.3
1.1.3
1.1.3Symbols:
S ymbols:
Symbols:
Symbols:
Symbolsusedinthismanualandontheinstrument:
Caution
Caution
Caution
Caution :
:
:
:refertotheinstructionmanual.
Incorrectusemayresultindamagetothedevice
oritscomponents.
Dangerousvoltagemaybepresent.
~
~
~
~AC(AlternatingCurrent)
DC(DirectCurrent)
ACorDC
Earthground
Doubleinsulated
Fuse
ConformstoEuropeanUniondirectives
1.1.4
1.1.4
1.1.4
1.1.4Instructions
I nstructions
Instructions
Instructions
*RemovetestleadsfromtheMeterbeforeopeningtheMeter
caseorbatterycover.
*WhenservicingtheMeter,useonlyspecifiedreplacement
parts.
*Beforeopeninguptheinstrument,alwaysdisconnectfrom
allsourcesofelectriccurrentandmakesureyouarenot
chargedwithstaticelectricity,whichmaydestroyinternal
components.
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