EXTECH EX381676A [7/13] Ac and dc voltage measurements

381676A-en-GB_V1.1 08/15

ACandDCVOL TAGEMEASUREMENTS

WARNING:RiskofElectrocutionforACMeasurements.Theprobetipsmaynotbelongenough

tocontactthelivepartsinsidesome240Voutletsforappliancesbecausethecontactsare

recesseddeepintheoutlets.Asaresult,thereadingmayshow0voltswhentheoutletactually

hasvoltagepresent.Makesuretheprobetipsaretouchingthemetalcontactsinsidetheoutlet

beforedeterminingthatnovoltageispresent.

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CAUTION:DonotmeasureACorDCvoltageifamotoronthecircuitisbeingswitchedONor

OFF.Largesurgesmayoccurthatcandamagethemeter.

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WARNING:Topreventelectricshockanddamagetothemeterorpersonalinjury,donot

measurevoltagesthatmayexceed600VDCorACrms.

NOTES:

Beforeconnectingtheprobeandtestleadatlowervoltageranges,thedisplaymayshowerratic

readings.Thisisnormalbecausethemeterishighlysensitive.Onceaconnectionismade,the

truereadingwillbedisplayed.

‘OL’indicatesanover‐rangeconditioninmanualmode.Ahigherrangeshould

thenbeselected.

Inmanualmode,selectthehighestrangefirstifthevaluetobemeasuredisunknownthenlower

therangeasneeded.

TheACmillivoltrangeisonlyavailableinthemanualrangemode.

1. UsetheprobecoverifmakingmeasurementsoncategoryIIIorabove

installations.

2. SetthefunctiondialtotheVposition.

3. UsetheMode(M)buttontoselectACorDC.

4. Inserttheblacktestleadbananaplugintothenegativejackatthebottomofthemeter.

5. TouchtheblacktestprobetiptotheneutralsideofthecircuitforACmeasurementsorto

thepositivesideofthecircuitforDCmeasurements.

6. Touchthepositivetestprobetiptothe“hot”sideofcircuitforACmeasurementsortothe

negativesideofthecircuitforDCmeasurements.

7. Readthevoltageonthe

display.Themeterautomaticallyselectsoptimumrangeortheuser

maymanuallyselectarangebypressingtheRange(R)button.PressandholdtheRange(R)

buttontoreturntotheAUTORangemode.

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