Mitsubishi Electric MXZ-4C36NAHZ Technical & Service Manual page 35

4-6. NOISE CRITERION CURVES
MXZ-4C36NAHZ
MXZ-4C36NAHZ-U1
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
MXZ-8C48NA
MXZ-8C48NA-U1
MXZ-8C48NAHZ
MXZ-8C48NAHZ-U1
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
MICROPHONE
3.3 ft (1 m)
5 ft
(1.5 m)
OCH573E
MODE SPL(dB) 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
500 1000 2000 4000 8000
UNIT
GROUND
MXZ-5C42NAHZ
MXZ-5C42NAHZ-U1
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250 500
BAND CENTER FREQUENCIES, Hz
MXZ-8C60NA-U1
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250 500
BAND CENTER FREQUENCIES, Hz
SPL(dB)
MODE LINE
COOLING 50
HEATING 54
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
1000 2000 4000 8000
MODE SPL(dB) LINE
COOLING 58
HEATING 59
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
1000 2000 4000 8000