Mitsubishi Electric PUMY-P100VHM Technical & Service Manual page 17

4-4. NOISE CRITERION CURVES
PUMY-P100VHM
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
PUMY-P140VHM
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
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
SPL(dB)
MODE LINE
COOLING 51
HEATING 53
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
PUMY-P125VHM
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63
MICROPHONE
1m
1.5m
17
SPL(dB)
MODE
COOLING
HEATING
125 250 500 1000 2000
BAND CENTER FREQUENCIES, Hz
UNIT
LINE
50
52
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
4000 8000
GROUND