Mitsubishi Electric PLA-ZM35EA2 Service Manual page 13

PLA-ZM125EA2(-ET/ER).UK
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125
CEILING
MICROPHONE
OCH777A
NOTCH SPL(dB)
High 41
Medium1 39
Medium2 36
Low 33
250 500 1000 2000 4000
BAND CENTER FREQUENCIES, Hz
MAIN UNIT
1.5 m
PLA-ZM140EA2(-ET/ER).UK
LINE
90
80
70
NC-70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
NC-20
CONTINUOUS
NOISE
10
8000
63
13
NOTCH SPL(dB)
High
Medium1
Medium2
Low
125 250 500 1000 2000
BAND CENTER FREQUENCIES, Hz
LINE
44
42
39
36
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
4000 8000