User's Manual

Extech Instruments
25 GX900-GX930-EN V1.1 5/14

CAPACITANCEMEASUREMENTS
WARNING:To avoidelectric shock, disconnect powerto the unit undertest and discharge all capacitors
beforetakinganycapacitancemeasurements.Removethebatteriesandunplugthelinecords.
1. SettherotaryfunctionswitchtotheCAPposition.
2. PresstheF1key(MENU),movethemenuselectortothe
menuitemlabeledCAPACITANCE,andthenpresstheOK
key.
3. SelectCAPACITANCEandthen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testleadstothecapacitortobetested.
7. Readthecapacitancevalueinthedisplay
FREQUENCY,DUTYCYCLE,PULSEWIDTH,andPERIODMEASUREMENTS
(ELECTRONIC)
1. SettherotaryfunctionswitchtotheHz/%position.
2. PresstheF1key(MENU),movethemenuselectortothe
menuitemofyourchoice,eitherFREQUENCY(Hz),DUTY
CYCLE,PULSEWIDTH,orPERIOD,andthenpresstheOK
key.
3. Inserttheblackleadbananaplugintothenegative
COM
jackandtheredtestleadbananaplugintothepositiveHz
jack.
4. Touchthetestprobetipstothecircuitundertest.
5. Readthemeasurementonthedisplay.