4 MG310-en-GB_V1.0 12/15
Meter
Description
1
2
3
4
5
6
7 8
9
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).
