407780A
‐
EU
‐
EN
v1.3
4/14
7
Operation
The
meter
has
two
modes
of
operation,
Sound
Level
Meter
mode
and
Integrating
Sound
Level
Meter
mode.
Sound
Level
Meter
measurements
1.
Press
the
button
to
switch
the
meter
ON.
The
initial
state
depends
on
the
conditions
set
when
the
meter
was
last
switched
off.
2.
Press
the
A/C
button
to
select
the
desired
frequency
weighting.
3.
Press
the
FAST/SLOW/IMPULSE
button
to
select
the
desired
response
time.
Note:
Refer
to
local
standards
to
select
the
proper
weighting
and
response
time
for
the
measurements
to
be
performed.
Requirements
vary
according
to
country
and
type
of
test.
OSHA
requires
Slow
and
A
weight
for
many
of
their
workplace
tests.
4.
Use
the
▲▼
buttons
to
select
the
desired
dB
range.
Choose
a
setting
in
which
the
bar
graph
indication
registers
approximately
in
the
middle
of
the
range.
If
the
OVER
indicator
appears
during
a
measurement,
the
upper
limit
of
the
selected
range
has
been
exceeded.
Increase
the
range
setting
until
the
symbol
remains
off
during
measurements.
Similarly,
if
the
UNDER
indicator
appears,
reduce
the
range
setting
until
the
symbol
remains
off.
Both
indicators
are
non
‐
latching
and
will
clear
when
the
correct
range
is
selected.
5.
Hold
the
instrument
comfortably
in
hand
(away
from
the
body)
or
position
it
on
a
tripod.
Point
the
microphone
toward
the
noise
source,
the
sound
pressure
level
will
be
displayed
on
the
meter’s
LCD
display
6.
The
numeric
level
indication
on
the
display
shows
the
currently
measured
sound
level.
The
reading
is
updated
once
per
second.
7.
Press
the
MAX
button
to
display
the
maximum
sound
level
encountered
during
a
measurement
period;
the
MAX
indicator
will
blink
appear
on
the
display.
Press
the
MAX
button
again
to
exit
this
mode
8.
Press
DATE/TIME
to
change
from
current
time
hour
:
minute
:
second
display
to
current
date
year
–
month
‐
day
display.
The
display
will
revert
to
the
current
time
display
after
2
seconds.
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.com
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