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Mitsubishi Electronics PLA-A12BA PLA-A12BA1 PLA-A18BA PLA-A18BA1 PLA-A24BA PLA-A24BA1 PLA-A30BA PLA-A30BA1 User Manual

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Page of 36
10
6
NOISE CRITERION CURVES
PLA-A12BA
PLA-A12BA
1
PLA-A18BA
PLA-A18BA
1
NOTCH SPL(dB)
LINE
High
31
Medium1
29
Medium2
28
Low
27
NOTCH
SPL(dB)
LINE
High
32
Medium1
31
Medium2
29
Low
28
90
80
70
60
50
40
30
20
10
63
125
250
500
1000
2000
4000
8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCT
A
VE B
AND SOUND PRESSURE LEVEL,
 dB (0 dB = 0.0002    bar)
OCT
A
VE B
AND SOUND PRESSURE LEVEL,
 dB (0 dB = 0.0002    bar)
BAND CENTER FREQUENCIES, Hz
90
80
70
60
50
40
30
20
10
63
125
250
500
1000
2000
4000
8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
BAND CENTER FREQUENCIES, Hz
PLA-A24BA
PLA-A24BA
1
PLA-A30BA
PLA-A30BA
1
NOTCH SPL(dB)
LINE
High
32
Medium1
31
Medium2
29
Low
28
NOTCH
SPL(dB)
LINE
High
34
Medium1
32
Medium2
30
Low
28
90
80
70
60
50
40
30
20
10
63
125
250
500
1000
2000
4000
8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
BAND CENTER FREQUENCIES, Hz
90
80
70
60
50
40
30
20
10
63
125
250
500
1000
2000
4000
8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
BAND CENTER FREQUENCIES, Hz
OCT
A
VE B
AND SOUND PRESSURE LEVEL,
 dB (0 dB = 0.0002    bar)
OCT
A
VE B
AND SOUND PRESSURE LEVEL,
 dB (0 dB = 0.0002    bar)