6-1
SOUND LEVEL CHARACTERISTICS
SM XLFDCI 1-A.1 GB
6.
SOUND LEVEL CHARACTERISTICS
6.1
Sound Pressure Level
6.2
Sound Pressure Level Spectrum
(Measured as Figure 1)
FAN SPEED
LINE
HI
ME
LO
1m
Mic.
Unit
Wall
Hz, BAND CENTER FREQUENCIES
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
-70NC
-60NC
-50NC
-40NC
-30NC
-20NC
MICRO BAR0.002 dB re , OCTAVE BAND SOUND PRESSURE LEVEL
Hz, BAND CENTER FREQUENCIES
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
-70NC
-60NC
-50NC
-40NC
-30NC
-20NC
MICRO BAR0.002 dB re , OCTAVE BAND SOUND PRESSURE LEVEL
XLF 9 DCI
XLF 12 DCI
Figure 1
CONTENTS
