Mastech MS8268 Manual de instrucciones

Mastech MS8268 HANDHELD DIGITAL MULTIMETER OPERATOR’S INSTRUCTION MANUAL http://www.HisTest.com

3.23.23.23.2MeasurementM easurementMeasurementMeasurementFunctionsF unctionsFunctionsFunctions3.2.13.2.13.2.13.2.1ACA CACACanda ndandandDCD CDCDCVolta

ℕTheresistancefunctioncanproduceenoughvoltagetoforward-biassilicondiodeortransistorjunctions,causingthemtoconduct.Toavoidthis,donotusethe40MΩrangefori

TotestthehFEoftransistor:1.SettherotaryswitchtohFEh FEhFEhFErange.2.Connectthe“com”plugand“+”plugofthespecialmulti-functionsockettotheCOMC OMCOMCOMand

Note:Note:Note:Note:ℕReadingispossibleatinputvoltagesabove3Vrms,buttheaccuracyisnotguaranteed.ℕInnoisyenvironment,itispreferabletouseshieldcableformea

5.Breakthecircuitpathtobetested.Touchtheblackprobetothemorenegativesideofthebreak;touchtheredprobetothemorepositivesideofthebreak.(Reversingtheleadswi

4.2.24.2.24.2.24.2.2ACA CACACVoltageV oltageVoltageVoltageRangeResolutionAccuracy400mV0.1mV±(3.0%ofrdg+3digits)4V1mV±（0.8%ofrdg+3digits） 40V10mV400V10

----ByB yByByHzH zHzHzranger angerangerange::::Overloadprotection:250Vdcor250Vacrms.InputVoltagerange:0.6V-3Vacrms(Inputvoltagemustbeenlargedwithincre

5.5.5.5.MAINTENANCEM AINTENANCEMAINTENANCEMAINTENANCEThissectionprovidesbasicmaintenanceinformation,includingfuseandbatteryreplacementinstructions.Don

AAAAAA+--++-FigureFigureFigureFigure2222...BatteryB atteryBatteryBatteryanda ndandandFuseF useFuseFuseReplacemenR eplacemenReplacemenReplacementtttCA

TableTableTableTableofo fofofContentsC ontentsContentsContentsTITLETITLETITLETITLEPAGEPAGEPAGEPAGE1.1.1.1.GENERALG ENERALGENERALGENERALINSTRUCTIONSI N

1.1.1.1.GENERALG ENERALGENERALGENERALINSTRUCTIONSI NSTRUCTIONSINSTRUCTIONSINSTRUCTIONSThisinstrumentcomplieswithIEC1010-1(61010-1@IEC:2001),CAT.II1000

*Donotapplyanyvoltagemeasurementbetweenthe10AterminalandtheCOMterminal.*Cautionwhenworkingwithvoltagesabove60Vdcor30Vacrms.Suchvoltagesposeashockhazar

*Anyadjustment,maintenanceorrepairworkcarriedoutonthemeterwhileitisliveshouldbecarriedoutonlybyappropriatelyqualifiedpersonnel,afterhavingtakenintoacc

2.22.22.22.2LCDL CDLCDLCDDisplayD isplayDisplayDisplaySeeTable1indicatedforinformationabouttheLCDdisplay.ACACACACTableTableTableTable1.1 .1.1.DisplayD

2.32.32.32.3KeypadK eypadKeypadKeypadSeeTable2indicatedforinformationaboutthekeypadoperations.TableT ableTableTable2.2 .2.2.KeypadK eypadKeypadKeypadK

2.52.52.52.5RotaryR otaryRotaryRotaryswitchs witchswitchswitchAeleven-positionrotaryselectorswitchgivesaccesstothefollowingquantities:ℕCurrent:10AℕCur

3.1.3.1.3.1.3.1.2222DATAD ATADATADATAHOLDH OLDHOLDHOLDmodem odemodemodeDataHoldmodemakesthemeterstopupdatingthedisplay.EnablingDataHoldfunctioninautor