Mitsubishi Electric PUZ-A18NHA2 Service Manual page 10

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