EXTECH MA620 [7/17] Operation

MA61_MA63-en-GB_V1.0 3/15

Operation

MeterPower

Caution:Donotusethemeterwithbatterycompartmentopenorunsecured.

Theclampmeterispoweredbytwo(2)AAAbatteries.Thebatterycompartmentislocatedonthe

backofthemeter.ThebatterycompartmentissecuredbyonePhillipsheadscrew.Refertothe

BatteryReplacementsectionlaterinthisguideformoreinformation.

AutomaticPowerOFF(APO)

Themeterautomaticallyswitchesoffafter15minutesofinactivity.Beforeswitchingoff,themeter

beepsseveraltimestoalerttheuser.TodisableAPO,holddowntheMODEbuttonwhilepowering

upthemeter.Themeterwillbeepfive(5)timesindicatingthatAPOisdisabled;releasethebutton.

Note

thattheAPOicon



isnotvisibleonthedisplaywhenAPOisdisabled.APOisre‐enabledon

thenextcyclingofmeterpower.

CurrentMeasurements‐ClampingTec hnique

Clamparoundonlyoneconductor.RefertoFig‐3below.Thediagramatleftiscorrectandthe

diagramatrightisincorrect.



Fig‐3CorrectandIncorrectClampingTechniques