Extech Instruments MG310

5 MG310-en-GB_V1.0 12/15
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DisplayDescription
1. Batterystrengthindicator
2. DC/ACVoltagemodes
3. Voltagepresentalert
4. PItestmode
5. DARtestmode
6. Time1forPI/DARtests
7. Time2forPI/DARtests
8. PI/DARTesttimer(minutesandseconds)
9. Testvoltageoutput[V]
10. Units[G:Gigaohm;M:Megaohm]andVoltage[V]
andResistance[Ω]modesymbols
11. Mainmeasurementdisplay
12. ZEROfunction
13. UnderRange<
14. OverRange>
15. Audiblecontinuityalertbeeper
OperatingInstructions
WARNING:Riskofelectrocution.High‐voltagecircuits,bothACandDC,areverydangerousand
shouldbemeasuredwithgreatcare.
1. ALWAYSturnthefunctionswitchtotheOFFpositionwhenthemeterisnotinuse.
2. If“OL”appearsinthedisplayduringameasurement,thevalueexceedsthemeter’srange.
3. Ifthebatteriesareweakreplacethembeforeperformingtests.Thebatteryindicatoronthe
upperleft
alertstheuserwhenbatterypowerislow.Thebatterycompartmentisaccessed
throughthebackofthemetersecuredbyonePhillipsheadscrew.
DISPLAYBACKLIGHT
Pressandholdthebacklightbuttonfor2secondstoswitchthebacklightonoroff.Forbest
batteryefficiencyusethebacklightonlywhenneeded.
HOLD
Theautomaticholdfunctionfreezestheinsulation resistancereadinginthedisplayforashort
periodoftimeforconvenience.

LOWBATTERYINDICATION
Whenthe iconappearsinthedisplay,thebatteriesshouldbereplaced.Refertothebattery
replacementsectionofthisusermanual.