Users’ Guide for Earth Ground Resistance Tester
Operation Instructions
4.7 MAX/MIN/AVG Measurement
Press the key of MAX/MIN/AVG to switch the modes between the measurements of maximum, minimum, average
and normal, corresponding to each of which a symbol is shown on LCD.
（1）When MAX is selected, the LCD shows the maximum of all the data.
（2）When MIN is selected, the LCD shows the minimum of all the data.
（3）When AVG is selected, the LCD shows the average of all the data.
4.8 Data Deletion
The data can be deleted when READ or MEMO is pressed down. Press CLEAR briefly to delete the data stored in
the existing position and press it long to delete all the data stored.
4.9 Backlight
Press LIGHT to turn on or turn off the backlight and it will go off automatically 15 seconds after it is turned on.
4.10 Auto off
Press ASP to start or cease Auto-off. The symbol “
” shown on the LCD means the Auto-off function has been
started and disappearance of the symbol means that the function has been ceased. In case that no operation is performed
within 15 minutes after Auto-off is on, the meter goes into sleeping status and the buzzer will give sound to remind of
this . Press any key to wake the meter up. Be sure to set the switch to “OFF” if the meter will not be used for long.
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