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BRUEL & KJAER 2230 User Manual

BRUEL & KJAER 2230
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Fig. 3.4.
Calibration
with
Sound
Level
Calibrator
Type
4230
2.
Set
the
controls
on
the
Sound
Level
Meter
as
follows:
POWER:
REF
.-OPERATE:
FSD:
RESET:
FREQ.
WEIGHTING:
EXT. FILTER:
SOUND
INCIDENCE:
DISPLAY:
TIME
WEIGHTING:
DETECTOR:
"On"
"Operate"
"11
0"
"All"
or
"Max./Min."
irrelevant
"Out"
"Frontal"
"SPL"
"Fast"
"RMS"
3.
Fit
the
Sound
Level
Calibrator
over
the
Microphone
using
the
1f2
"
adaptor.
4.
Start
the
Sound
Level
Calibrator
and
wait
for
the
display
to
stabilize.
The
display
should
indicate
93,8
dB
±
0,1
dB
(1/2
inch
free-field
microphone).
5. If an
adjustment
is
necessary,
turn
the
SENS. ADJ.
potentiometer
on
the
side
of
the
Sound
Level
Meter
with
a
small
screwdriver
(see Fig.3.4).
3.4.3. Calibration with the Pistonphone
Type
4220
The
Type
4220
produces
a
nominal
sound
pressure
level
of
124
dB
± 0,15
dB
(re.
20 x 1
o-
6
Pa).
The
calibration
procedure
is
as
follows:
1.
Remove
the
Windscreen
if
fitted.
2.
Set
the
controls
on
the
Sound
Level
Meter
as
follows:
POWER:
REF.-OPERATE:
FSD:
"On"
"Operate"
"120"
15

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BRUEL & KJAER 2230 Specifications

General IconGeneral
BrandBRUEL & KJAER
Model2230
CategoryMeasuring Instruments
LanguageEnglish

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