Mitsubishi Electric SU-1.6NR, Техническое и сервисное руководство

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7
DATA 5
NOISE CRITERION CURVES
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-70
NC-20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
SUH-1VR.TH
47
SPL(dB) LINE
<50Hz>
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-70
NC-20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
SUH-1.6VR.TH
SUH-1.6VR2.TH
50
SPL(dB) LINE
<50Hz>
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-70
NC-20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
SUH-2VR.TH
SUH-2VR
1
.TH
SUH-2VR
2
.TH
52
SPL(dB) LINE
<50Hz>
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-70
NC-20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
SUH-2.5VR.TH
Hi
Lo
NOTCH
53
51
SPL(dB) LINE
<50Hz>
OC282-A--1.qxp 03.1.28 4:29 PM Page 7