Control Buttons; Symbols And Annunciators - Extech Instruments MG320 User Manual

4. Control buttons
1. Data Hold on/off (short press) for AC/DC Voltage and Resistance modes only. Also for display
Backlight on/off (long press)
2. Short press to Recall stored readings. Another short press to exit this mode.
3. Save reading (short press) and Clear all stored readings (long press)
4. Comparator (short press) and Zero (long press)
5. PI and DAR test mode selection (short
presses)
6. Insulation Test Lock button (long press to
activate/deactivate lock mode)
7. Up arrow for adjusting test voltage output and
scrolling through recalled readings
8. Down arrow for adjusting test voltage output
and scrolling through recalled readings
9. Press to start Insulation or Low Resistance
tests. Insulation tests output high voltages and measure insulation resistance. Low Resistance
tests can be made up to 20kΩ.
5. Symbols and Annunciators
1. Test Voltage alert
2. Insulation Test Lock icon
3. Audible beeper symbol
4. PI/DAR test modes
5. True RMS voltage measurement
6. ZERO function icon
7. Battery status
8. Test voltage value
9. Measurement type and units
10. PI/DAR timer information
11. Bargraph measurement representation
12. Comparator area: Test pass [PASS], test fail [NG], units [K, M, G], and reference value.
13. Main measurement display digits
14. Display Hold Icon (freeze/unfreeze display)
15. Save/Recall readings (01-99)
3
2
1
1 2 3 4
15
14
13
12
6
4 5
9
5 6 7
MG320-en-GB_v1.1 1/17
6
7
8
8
9
10
11