Extech Instruments EX650

EX65x‐en‐GB_V1.67/16
18
µAAC/DCCurrentMeasurementsusingTestLeads
WARNING:Donothandlethetestleadsabovethefinger/handguardbarrier.
CAUTION:ObserveCATII1000VandCATIII600VwithrespecttoEarthGround.
1. InserttheblacktestleadintotheCOMterminalandtheredtestleadintotheA terminal.
2. Turnthemeter’sfunctionswitchtothe position.TheµAunitsymbolwillappearonthe
displayindicatingthatmicro‐amperesarebeingmeasured.
3. ThemeterdisplaywillshowACorDC(usetheMbuttontoselectACorDC).
4. Currentmeasurementsmustbetakeninserieswiththecircuitundertest.Seeaccompanying
diagram.
5. Touchtheblacktestleadtothenegativesideofthecircuitandtheredtestleadtothe
positivesideofthecircuit.
6. Readthecurrentmeasurementinthedisplayrepresentedbythenumericaldigitsandthebar
graph(EX655).Thedisplaywillindicatetheproperdecimal
pointandvalue.InDC,Ifthe
polarityisreversed,thedisplaywillshow(‐)minusbeforethevalue.
AC DC

Fig4‐4µAAC/DCCURRENTMEASUREMENTS