Mitsubishi MS-18RV Service Manual download pdf (Page 8)

NOISE CRITERIA CURVES

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

Test conditions,

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

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

SPL(dB(A)) LINE

NOTCH

High

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 27: Wet-bulb temperature 19:

SPL(dB(A)) LINE

NOTCH

High

MS-18RV -

MS-24RV -

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:

SPL(dB(A)) LINE

NOTCH

High

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:

SPL(dB(A)) LINE

NOTCH

High

MU-18RV -

MU-24RV -

OB271--1.qxp 2/7/01 9:00 AM Page 8

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Mitsubishi MS-18RV Service Manual Page 8

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