MA145
‐
en
‐
GB_V1.1
5/15
5
Operation
CAUTIONS
Read
and
understand
all
of
the
Safety
statements
listed
in
the
safety
section
of
this
manual
prior
to
use.
Powering
the
Meter
1.
Press
the
Power
‐
Backlight
button
to
power
the
meter.
Check
the
batteries
if
the
unit
fails
to
power
ON.
2.
Press
and
hold
the
Power
button
for
more
than
2
seconds
to
power
OFF
the
meter.
3.
The
meter
has
an
Auto
Power
OFF
feature
(APO)
where
the
meter
switches
OFF
after
20
minutes
of
inactivity.
To
disable
APO,
refer
to
the
next
section.
Note:
The
meter
displays
the
battery
capacity
when
powering
up.
Disable
Auto
Power
OFF
The
meter
will
auto
power
OFF
after
20
minutes
of
inactivity.
To
defeat
this
feature,
follow
the
steps
below.
1.
With
the
meter
OFF,
press
and
hold
the
‘V’
button
and,
while
continuing
to
hold
the
‘V’
button,
press
the
power
button.
2.
The
display
will
show
AOFF
.
3.
Release
all
of
the
buttons.
4.
The
Auto
Power
OFF
function
will
now
be
disabled
until
the
next
cycle
of
power.
Display
Backlight
With
the
meter
powered
ON,
press
the
backlight
button
to
switch
the
backlight
ON
or
OFF.
Note
that
excessive
use
of
the
backlight
will
shorten
the
battery
life.
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