Mitsubishi Electric PUH-P8MYA Technical & Service Manual page 20

[6] NC Curve (Outdoor unit)
(1) Octave Band Analysis
1) PUH-P8MYA
Measurement condition
1m
A
Sound pressure level in anechoic room
56 dB (A)
Note: The measuring point is 1m from the bottom of the unit (1m from the front of the unit).
2) PUH-P10MYA
Measurement condition
1m
A
Sound pressure level in anechoic room
57 dB (A)
Note: The measuring point is 1m from the bottom of the unit (1m from the front of the unit).
70
60
50
B
40
30
20
10
63
70
60
50
B
40
30
20
10
63
63Hz 125Hz 250Hz 500Hz
63 59 56 55
Approximate minimum
audible limit on
continuous noise
125 250 500
OCTAVE BAND CENTER FREQUENCIES <Hz>
63Hz 125Hz 250Hz 500Hz
63 60 56 56
Approximate minimum
audible limit on
continuous noise
125 250 500
OCTAVE BAND CENTER FREQUENCIES <Hz>
–17–
1000Hz 2000Hz 4000Hz 8000Hz
50 45 42 39
1000 2000 4000
1000Hz 2000Hz 4000Hz 8000Hz
51 47 44 40
1000 2000 4000
(dB)
NC60
NC50
NC40
NC30
NC20
8000
(dB)
NC60
NC50
NC40
NC30
NC20
8000