Mitsubishi Electric PUHZ-ZRP100VKA3 Service Manual page 10

5-4. NOISE CRITERION CURVES
PUHZ-ZRP100VKA3.UK
PUHZ-ZRP100YKA3.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-ZRP200YKA2.UK
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
OCH645
MICROPHONE
1.5 m
SPL(dB)
MODE LINE
COOLING 49
HEATING
51
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
MODE SPL(dB) LINE
COOLING 59
HEATING 62
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
1 m
UNIT
GROUND
PUHZ-ZRP125/140VKA3.UK
PUHZ-ZRP125/140YKA3.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-ZRP250YKA2.UK
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
10
SPL(dB)
MODE LINE
COOLING 50
HEATING
52
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
MODE SPL(dB) LINE
COOLING 59
HEATING 62
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000