User's Manual

Extech Instruments
18 GX900-GX930-EN V1.1 5/14
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LOWPASSFILTERFORACVMEASUREMENTS
ThemeterisequippedwithaLowPassFilterforAC
measurements.Toactivatethefilterpleasefollowthesteps
below:
1. SettherotaryswitchtotheV~position
2. PresstheF1key(MENU)
3. MovethemenuselectortotheLOWPASSfieldandthen
pressOK
4.
SelectLPF(LowPassFilter)andthenpressOK
5. PresstheF3key(RANGE)andthenpresstheF2key(MANUAL)
6. Movethemenuselectortothe500VfieldandpresstheOKkey
DC/ACMILLIVOLTMEASUREMENTS
CAUTION:  Do notmeasureDC/ACvoltagesif amotor on the circuit is being switched ON or OFF. Large 
voltagesurgesmayoccurthatcandamagethemeter.
1. SetthefunctionswitchtothemVposition.
2. PresstheF1key(MENU),movethemenuselectortothemenuitemlabeledmVDC
ormVAC,andthenpresstheOKkey
3. SelectmVDCormVACfromthekeyoptionsandpresstheOKkey.
4. Inserttheblack
testleadbananaplugintothenegativeCOMjack.
5. InserttheredtestleadbananaplugintothepositiveVjack.
6. Touchtheblacktestprobetiptothenegativesideofthecircuit.
7. Touchtheredtestprobetiptothepositivesideofthecircuit.
8. Readthevoltageinthedisplay.