Mitsubishi Electric MR. SLIM PCA Series Service Manual page 18

PCA-M100KA
PCA-M100KA-ER
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
PCA-M140KA
PCA-M140KA-ER
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
OCH659A
NOTCH
SPL(dB) LINE
High 43
Medium1 41
Medium2 39
Low 37
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
NOTCH SPL(dB) LINE
High 48
Medium1 45
Medium2 43
Low 41
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
PCA-M125KA
PCA-M125KA-ER
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125
1m
1m
about 1.4m
MICROPHONE
18
NOTCH SPL(dB)
High 45
Medium1 43
Medium2 41
Low 39
250 500 1000 2000 4000
BAND CENTER FREQUENCIES, Hz
Ceiling
Main unit
LINE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
8000