Extech Instruments EX650

EX65x‐en‐GB_V1.67/16
20
ResistanceMeasurements
CAUTION:SwitchOFFpowertothedeviceundertestbeforemeasuring.Donotteston
circuitsordeviceswhere60VDCor30VACispresent.
1. Inserttheblacktestleadbananaplugintothenegative(COM)jack.Inserttheredtest
leadbananaplugintothepositive(V/Ω)jack.
2. TurntheFunctionSwitchtotheΩposition.
3. UsetheMbuttontoselecttheΩicononthedisplayindicatingresistanceonly
(without
thecontinuity/diode/capacitanceiconsshowing).
4. Touchthetestprobetipsacrossthecircuitorpartundertest.Itisbesttodisconnectone
sideofthepartundertestsotherestofthecircuitwillnotinterferewiththeresistance
reading.
5. Readtheresistancevalueinthe
display.Thedisplaywillindicatetheproperdecimal
pointandvalue.Ifthereadingisoutofrange,theOLdisplayiconwillappear.
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Fig4‐6RESISTANCEMEASUREMENTS
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