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Sound pressure level
5.8
AB052-092MCERA(M)
70
60
50
40
30
20
Limit of
audible
continuous
noise
10
125
63
250
Octave band center frequency (Hz)
500
1000
2000
4000
8000
1) Testing illustrate:
2) Testing condition:
a: Unit running in the normal condition
b: Test in the semi-anechoic chamber
c: Noise level varies from the actual factors,
such as room structure, etc.
AB122-182MCERA(M)
70
60
50
40
30
20
Limit of
audible
continuous
10
noise
63
125
250
Octave band center frequency (Hz)
145
500
1000
2000
4000
8000
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