Mitsubishi Electric PUMY-P36NKMU4 Technical & Service Manual page 35

4-6. NOISE CRITERION CURVES
PUMY-P36NKMU4
PUMY-HP36NKMU2
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
PUMY-P48NKMU4
PUMY-HP48NKMU2
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125
BAND CENTER FREQUENCIES, Hz
OCH811A
SPL(dB)
MODE LINE
COOLING 49
HEATING 53
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
MODE SPL(dB) LINE
COOLING 51
HEATING
54
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
250 500 1000 2000 4000 8000
PUMY-HP42NKMU2
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63
PUMY-P60NKMU4
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63
MICROPHONE
1.5 m
[4.9 ft]
35
SPL(dB)
MODE
COOLING 50
HEATING 54
125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
SPL(dB)
MODE
COOLING 58
HEATING 59
125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
1 m
UNIT
[3.3 ft]
GROUND
LINE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
LINE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20