Mitsubishi Electric PUY-A12NHA2, Service Manual

Page: 10 / 120

10
5-3. NOISE CRITERION CURVES
5ft
3.3ft
MICROPHONE
UNIT
GROUND
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002
μ
bar)
BAND CENTER FREQUENCIES, Hz
PUY-A12/18NHA2
PUY-A12/18NHA2-BS
PUZ-A18NHA2
PUZ-A18NHA2-BS
COOLING
MODE
HEATING
46
SPL(dB)
47
LINE
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002
μ
bar)
BAND CENTER FREQUENCIES, Hz
PUY-A24/30/36NHA2
PUY-A24/30/36NHA2-BS
PUZ-A24/30/36NHA2
PUZ-A24/30/36NHA2-BS
COOLING
MODE
HEATING
48
SPL(dB)
50
LINE
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002
μ
bar)
BAND CENTER FREQUENCIES, Hz
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
PUY-A42NHA2
PUY-A42NHA2-BS
PUZ-A42NHA2
PUZ-A42NHA2-BS
COOLING
MODE
HEATING
51
SPL(dB)
55
LINE