8 MG310-en-GB_V1.0 12/15
.
ACCURACY
SELF
‐
TEST
FUNCTION
The
MG310
features
a
10M
Ω
accuracy
check
feature
for
the
Insulation
Resistance
mode.
To
verify
the
accuracy:
1.
Connect
a
wire
jumper
to
the
meter
between
the
LINE
(4)
and
V
(3)
terminals
as
shown
in
the
accompanying
illustration.
2.
Select
one
of
the
three
test
voltage
(250/500/100V)
switch
positions.
3.
Press
the
TEST
button
to
begin
the
test.
4.
When
testing
is
complete,
the
meter
will
display
10.0M
Ω
(±
0.1M
Ω
).
If
the
meter
does
not
show
an
accurate
reading
please
have
it
serviced.
LOW
RESISTANCE
CONTINUITY
TESTING
WARNING:
To avoid electric shock, never measure continuity on circuits or wires that have
voltage on them.
1.
Set
the
function
switch
to
the
(continuity)
position.
2.
Insert
the
black
test
lead
banana
plug
into
the
GUARD
(2)
jack.
Insert
the
red
test
lead
banana
plug
into
the
EARTH
(1)
jack.
3.
Press
the
TEST
button.
The
button
lamp
will
light
indicating
that
testing
can
begin.
4.
Touch
the
test
probe
tips
to
the
circuit
or
wire
you
wish
to
check.
5.
If
the
resistance
is
less
than
approximately
20
Ω
,
the
audible
signal
will
sound
and
the
audio
icon
will
be
displayed.
If
the
circuit
is
open,
the
display
will
indicate
>
220
Ω
.
6.
Press
the
TEST
button
again
to
disengage
the
test
mode
(the
lamp
will
switch
off)
before
removing
the
test
leads
from
the
circuit
under
test
and
from
the
meter.
M
