Mitsubishi MS-18RV Service Manual download pdf (Page 9)

9

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

Test conditions,

Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

47

SPL(dB(A)) LINE

NOTCH

High

MS-30RV -

E1

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

Test conditions,

Cooling : Dry-bulb temperature 35: Wet-bulb temperature 24:

55

SPL(dB(A)) LINE

NOTCH

High

MU-30RV -

E1

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