Mitsubishi Electric PUHZ-W85VHA2, Service Manual

Page: 7 / 48

7
DATA
3
1.5m
1m
MICROPHONE
UNIT
GROUND
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
90
80
70
60
50
40
30
20
10 OCT
A
VE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 bar)
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
BAND CENTER FREQUENCIES, Hz
PUHZ-W85VHA2(-BS).UK
COOLING
MODE
HEATING
48
SPL(dB)
48
LINE
3-1. NOISE CRITERION CURVES