Mitsubishi Electric SU-1.6NR, Technical & Service Manual

Page: 8 / 60

8
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
SU-1VR.TH
SU-1VR.TH-T
45
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
SU-1.6NR.TH
51
SPL(dB) LINE
<60Hz>
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
SU-1.6VR.TH
SU-1.6VR2.TH
SU-1.6VR.TH-T
SU-1.6VR2.TH-T
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
SU-2VR.TH
SU-2VR
1
.TH
SU-2NR.TH
SU-2VR.TH-T
SU-2VR
1
.TH-T
52
SPL(dB) LINE
<50/60Hz>
OC282-A--1.qxp 03.1.28 4:29 PM Page 8