Noise Criterion Curves - Mitsubishi Electric PU-P71VHA Service Manual

5-3. NOISE CRITERION CURVES

PUH-P71VHA.UK
PUH-P71YHA.UK
PU-P71VHA.UK
PU-P71YHA.UK
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
PUH-P125YHA.UK
PU-P125YHA.UK
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
SPL(dB)
MODE LINE
COOLING 49
HEATING
51
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
MODE SPL(dB) LINE
COOLING 50
HEATING 52
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
PUH-P100VHA.UK
PUH-P100YHA.UK
PU-P100VHA.UK
PU-P100YHA.UK
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
10
SPL(dB)
MODE LINE
COOLING 50
HEATING
52
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000