Instruction
Manual
Precision Integrating Sound Level Meter Type 2230
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An
Integrating
Sound Level
Meter
with
Type 1
Impulse
precision.
Its
comprehen-
sive
construction
and
versatility
make
it
ideal
for
all
kinds
of
sound level measure-
ments
including
octave
and
113
octave
fre-
quency
analysis using a snap-on
filter
set.
The Type
2230
carries
out
five
measure-
ments
in parallel: SPL, Max., Min.,
Leq
and
SEL,
all
of
which
can be
obtained
for
the
same
signal. A
choice
between 2
detector
modes
(RMS and Peak), 3
time
weightings
(Slow, Fast, Impulse), 4
frequency
weigh-
tings
(A, C, Lin and All-pass) is available
for
the measurements.
A
partial
(Max./Min.)
reset, a total reset
and a pause
function
increase the use-
fulness
of
the instrument. A linear free
or
a
linear
diffuse
field
frequency
response is
obtained
by
electronic
frequency weighting.
The SPL is
continuously
monitored
on a
quasi-analogue
60
dB
scale. Warnings
of
overload,
depleted
batteries
and illegal
set-
tings
are also given. AC and DC outputs
allow
chart
or
tape
recording
and audio
monitoring
of
the SPL.
+ Bri.iel & Kjaer
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