5 MG310-en-GB_V1.0 12/15
1
2
3 4
5
6
7
8
9
10
11
12
13
14
15
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.
