EXTECH MA620 [9/17] Ac voltage measurements

MA61_MA63-en-GB_V1.0 3/15

FrequencyMeasurements

WARNING:Toavoidelectricshock,disconnectthetestleadsfromthemeterbeforemaking

currentmeasurements.

CAUTION:ObserveCATII600V,CATIII300VwithrespecttoEarthGroundfortheJaw.

1. SettheFunctionswitchtotheHzposition.

2. PresstheTriggertoopenthejawandfullyencloseoneconductor.RefertotheFig‐3inthe 

CurrentClamptechniquesectionabove.

3. ReadtheFrequencymeasurementontheLCDinHz.

VoltageMeasurements

WARNING:Donotapply>600VAC/DCbetweenthemeter’sterminalsandearthground

CAUTION:Whenconnectingthetestleadstothecircuitordeviceundertest,connectthe

blackleadbeforethered;whenremovingthetestleads,removetheredbeforetheblacklead.

ACVoltageMeasurements

1. Inserttheblacktestleadbananaplugintothenegative

(COM)jackandtheredtestleadbananaplugintothe

positive(V/Ω)jack.

2. TurnthefunctionswitchtotheVposition.

3. UsetheMODEbuttontoselectACifnecessary.Usethe

MODEbuttontoalso

selectthefrequencyofthemeasured

voltage.

4. Touchthetestprobetipstothecircuitundertest.

5. Readthevalueinthedisplay.Thedisplaywillindicatethe

properdecimalpoint.



Fig‐5ACVOLTAGEMEASUREMENT

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