EXTECH EX655 [18/35] Μa ac dc current measurements using test leads

EX65x‐en‐GB_V1.67/16

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