Mitsubishi Electric SUZ-KA24NAHZ, Service Manual

Page: 10 / 122

10
OCH754A
5-3. NOISE CRITERION CURVES
10
20
30
40
50
60
70
80
90
63 125 250 500 1000 2000 4000 8000
COOLING
MODE
HEATING
52
SPL(dB)
53
LINE
OCT
AVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
5 ft
3.3 ft
MICROPHONE
UNIT
GROUND
SUZ-KA24NAHZ
10
20
30
40
50
60
70
80
90
63 125 250 500 1000 2000 4000 8000
OCT
AVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
COOLING
MODE
HEATING
52
SPL(dB)
53
LINE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
SUZ-KA30NAHZ
SUZ-KA36NAHZ