DOC00071 smartPlug™ Manual rev 02
22
PASSIVE ATTENUATION (EN352-2 AND EN352-7)
smartPlug™ measured in accordancewithEN352-2 andEN352-7.
Foam tips (EN352-2)
Frequency (Hz)
125
250
500
1000 2000 4000 8000
H
M L
SNR
(dB)
Mean
38.8
35.4
40.7
39.8
40.9
40.8
44.3 37
36 35
38
attenuation (dB)
Standard
4.8
3.2
3.5
4.7
3.5
3.7
3.7
deviation (dB)
Mean attenuation
34.1
32.2
37.2
35.1
37.5
37.1
40.7
–
Standard
deviation(dB)
The smartPlug™ has level dependent facilities and the criterion
levels as defined in EN352-7 are displayed below.
Model
H
M
L
(dBA)
Foam tips
115.4
118.0
118.1
En
glis
h
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