Noise Criterion Curves - Mitsubishi Electric PUHZ-SW75VHA Service Manual

5-3. NOISE CRITERION CURVES

MICROPHONE
1m
1.5m
PUHZ-SW100VHA.UK
PUHZ-SW100VHA-BS.UK
PUHZ-SW100YHA.UK
PUHZ-SW100YHA-BS.UK
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
OCH533A
UNIT
GROUND
SPL(dB)
MODE LINE
COOLING 50
HEATING 54
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
PUHZ-SW75VHA.UK
PUHZ-SW75VHA-BS.UK
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
PUHZ-SW120VHA.UK
PUHZ-SW120VHA-BS.UK
PUHZ-SW120YHA.UK
PUHZ-SW120YHA-BS.UK
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
12
SPL(dB)
MODE LINE
COOLING
48
HEATING 51
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
SPL(dB)
MODE LINE
COOLING 51
HEATING 54
500 1000 2000 4000 8000
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20