EXTECH MG325 [2/18] Table of contents

2 MG325-en-GB_v1.1 3/16

TableofContents

1. INTRODUCTION 3

2. SAFETY 3

3. METERDESCRIPTION 5

4. CONTROLBUTTONS 6

5. SYMBOLSANDANNUNCIATORS 6

6. OPERATINGINSTRUCTIONS 7

6.1DisplayBacklight 7

6.2DataHold 7

6.3LowBatteryIndication 7

6.4DCVOLTAGEMEASUREMENTS 7

6.5ACVOLTAGEMEASUREMENTS 8

6.6RESISTANCEMEASUREMENTS 9

6.7CONTINUITYMEASUREMENTS 10

6.8CAPACITANCEMEASUREMENTS 11

6.9INSULATIONRESISTANCEMEASUREMENTS 12

6.9.1DisableLockModeforInsulationandContinuityTests 13

6.9.2InsulationResistanceTestTimer 13

6.9.3DielectricAbsorptionRatio[DAR]InsulationTesting 13

6.9.4PolarizationIndex[PI]InsulationTesting 14

6.9.5ComparatorUtility 14

7. DATARECORDING 15

8. SETUPMODE 15

9. MAINTENANCE 16

9.1BATTERYINSTALLATION 16

9.2REPLACINGTHEFUSE 16

10. SPECIFICATIONS 17