Meter Description; Control Buttons - Extech Instruments MG310 User Manual

Meter Description
1. EARTH terminal for Insulation Resistance and Continuity testing.
2. GUARD terminal for ACV and Continuity testing.
3. V terminal for ACV testing and Self‐Test mode.
4. LINE Terminal for Insulation Resistance testing and Self‐Test mode.
5. Backlit LCD Display
6. ZERO button (short press) and LCD Backlight ON/OFF button (long press)
7. PI/DAR Testing selection button
8. TEST button
9. Rotary function select switch
Note: Secure battery compartment located on rear of unit.
Control Buttons
1. PI/DAR button: Press to select PI polarization index and DAR dielectric absorption ratio test
modes.
2. ZERO/Backlight button: Long press to enable/disable LCD backlight or short press to reset the
display to zero for low resistance measurements.
3. TEST button: Engage/disengage testing for IR, Continuity, and AC Voltage tests.
4. Rotary function switch: Select an IR output test voltage (250V/500V/1000V), measure low
resistance (Continuity), or measure AC Voltage (ACV).
4
5
6 7 8
3 2 1
4
9
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