Extech Instruments MG310

8 MG310-en-GB_V1.0 12/15
.
ACCURACYSELF‐TESTFUNCTION
TheMG310featuresa10MΩaccuracycheck
featurefortheInsulationResistancemode.
Toverifytheaccuracy:
1. Connectawirejumpertothemeter
betweentheLINE(4)andV(3)
terminalsasshowninthe
accompanyingillustration.
2. Selectoneofthethreetestvoltage
(250/500/100V)switchpositions.
3.
PresstheTESTbuttontobeginthetest.
4. Whentestingiscomplete,themeter
willdisplay10.0MΩ(±0.1MΩ).Ifthe
meterdoesnotshowanaccurate
readingpleasehaveitserviced.
LOWRESISTANCECONTINUITYTESTING
WARNING: To avoid electric shock, never measure continuity on circuits or wires that have
voltage on them.
1. Setthefunctionswitchtothe
(continuity)position.
2. Inserttheblacktestleadbananaplug
intotheGUARD(2)jack.
Inserttheredtestleadbananapluginto
theEARTH(1)jack.
3. PresstheTESTbutton.Thebuttonlamp
willlightindicatingthattestingcan
begin.
4. Touch
thetestprobetipstothecircuit
orwireyouwishtocheck.
5. Iftheresistanceislessthan
approximately20Ω,theaudiblesignal
willsoundandtheaudioiconwillbe
displayed.Ifthecircuitisopen,the
displaywillindicate>220Ω.
6. Pressthe
TESTbuttonagaintodisengagethetestmode(thelampwillswitchoff)before
removingthetestleadsfromthecircuitundertestandfromthemeter.
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