Noise Criterion Curves - Mitsubishi Electric PUZ-ZM100VKA Service Manual

5-3. NOISE CRITERION CURVES

PUZ-ZM100VKA.UK
PUZ-ZM100YKA.UK
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
MICROPHONE
1 m
1.5 m
OCH654
MODE SPL(dB) LINE
COOLING 49
HEATING 51
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
UNIT
GROUND
PUZ-ZM125VKA.UK
PUZ-ZM140VKA.UK
PUZ-ZM125YKA.UK
PUZ-ZM140YKA.UK
90
80
70
60
50
40
30
20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125
15
SPL(dB)
MODE
COOLING
HEATING
250 500 1000 2000
BAND CENTER FREQUENCIES, Hz
LINE
50
52
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
4000 8000