Mitsubishi Electric PLA-RP·AA Service Manual page 64

PCA-RP140GA
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
PCA-RP71HA
90
80
70
60
50
40
30
APPROXIMATE
20
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
NOTCH SPL(dB) LINE
High 48
Medium1 46
Medium2
44
Low 42
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
NOTCH SPL(dB) LINE
High 38
Low 34
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
1m
1m
about 1.4m
MICROPHONE
PCA-RP125HA
90
80
70
60
50
40
30
APPROXIMATE
20
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125
64
unit
NOTCH SPL(dB)
High 50
Low 44
250 500 1000 2000 4000
BAND CENTER FREQUENCIES, Hz
ceiling
LINE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
8000