Mitsubishi Electric QUHZ-W40VA, Руководство по обслуживанию

Страница: 4 / 34

GHH15010
4
DATA
3
1m
MICROPHONE
UNIT
GROUND
3-1. NOISE CRITERION CURVES
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 bar)
BAND CENTER FREQUENCIES, Hz
NOTCH
HEATING
A7/W55
43
SPL(dB)
LINE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
10
20
30
40
50
60
70
80
90
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
［dB］
125 250 500 1000 2000 4000 8000
OA
63
QUHZ-W40VA 43 45.3 46.4 40.9 35.6 33.0 25.5 21.4 46.4
BAND CENTER FREQUENCIES, Hz
FORM NAME