Data - Mitsubishi Electric PUHZ-W90VHA Service Manual

3

DATA

3-1. NOISE CRITERION CURVES
PUHZ-W90VHA
90
80
70
60
50
40
30
20
10
MICROPHONE
1m
1.5m
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
63 125
BAND CENTER FREQUENCIES, Hz
UNIT
GROUND
MODE
COOLING
HEATING
250 500 1000
5
SPL(dB)
LINE
49
49
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
2000 4000 8000