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Display Description
1.
Battery strength indicator
2.
DC/AC Voltage modes
3.
Voltage present alert
4.
PI test mode
5.
DAR test mode
6.
Time1 for PI/DAR tests
7.
Time2 for PI/DAR tests
8.
PI/DAR Test timer (minutes and seconds)
9.
Test voltage output [V]
10.
Units [G: Gigaohm; M: Megaohm] and Voltage [V] and Resistance [Ω] mode symbols
11.
Main measurement display
12.
ZERO function
13.
Under Range <
14.
Over Range >
15.
Audible continuity alert beeper
Operating Instructions
WARNING: Risk of electrocution. High‐voltage circuits, both AC and DC, are very dangerous and
should be measured with great care.
1.
ALWAYS turn the function switch to the OFF position when the meter is not in use.
2.
If "OL" appears in the display during a measurement, the value exceeds the meter's range.
3.
If the batteries are weak replace them before performing tests. The battery indicator on the
upper left alerts the user when battery power is low. The battery compartment is accessed
through the back of the meter secured by one Phillips head screw.
DISPLAY BACKLIGHT
Press and hold the backlight button for 2 seconds to switch the backlight on or off. For best
battery efficiency use the backlight only when needed.
HOLD
The automatic hold function freezes the insulation resistance reading in the display for a short
period of time for convenience.
LOW BATTERY INDICATION
When the
icon appears in the display, the batteries should be replaced. Refer to the battery
replacement section of this user manual.
1
15
14
13
12
5
2
3 4 5
11
10
MG310-en-GB_V1.0 12/15
6
7
8
9
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