Tabla de contenido
Publicidad
Idiomas disponibles
Idiomas disponibles
Noise Reduction
Report No. VTEA 20110721-4HP-P
Test Frequency (Hz)
125
250
500
Mean Attenuation (dB)
30.7
31.5
35.7
Standard Deviation (dB)
4.3
4.4
4.5
The European Union testing was conducted by: SATRA Technology Centre, Ltd. UK.
Attenuation was determined in accordance with EN 352-2:2002. Notified Body
responsible for EC type examination: SATRA, No. 0321. Report No. SPC0219518_
3/1345 July 2014
Test Frequency (Hz)
63
125
250
Mean Attenuation (dB)
26.9
27.8
26.8
Standard Deviation (dB)
4.8
4.8
5.1
APV (dB)
22.1
22.9
21.6
SNR = 28 dB
H = 31 dB
M = 24 dB
H: Average attenuation characteristics in the high frequency spectrum (> 2 kHz)
M: Average attenuation characteristics in the mid frequency spectrum (0.5-2 kHz)
L: Average attenuation characteristics in the low frequency spectrum (<0.5 kHz)
APV = Assumed Protection Value
SNR = Single Number Rating
11
All manuals and user guides at all-guides.com
1000
2000
3150
4000
6300
8000
37.1
37.3
42.4
43.3
45.4
46.8
5.2
4.0
3.0
3.0
4.3
3.6
500
1000
2000
4000
8000
27.3
29.6
35.8
42.6
42.1
6.0
6.5
3.8
2.7
4.9
21.3
23.1
32.0
39.9
37.3
L = 23 dB
Noise Reduction
Report No. VTEA 20110729-5HP-P
Test Frequency (Hz)
125
250
500
Mean Attenuation (dB)
27.7
29.3
31.8
Standard Deviation (dB)
4.7
5.8
5.6
The European Union testing was conducted by: SATRA Technology Centre, Ltd. UK.
Attenuation was determined in accordance with EN 352-2:2002. Notified Body
responsible for EC type examination: SATRA, No. 0321. Report No. SPC0219518_
1/1345 July 2014
Test Frequency (Hz)
63
125
250
Mean Attenuation (dB)
26.8
28.3
28.4
Standard Deviation (dB)
7.2
7.7
7.1
APV (dB)
19.6
20.6
21.3
SNR = 27 dB
H = 27 dB
M = 24 dB
H: Average attenuation characteristics in the high frequency spectrum (> 2 kHz)
M: Average attenuation characteristics in the mid frequency spectrum (0.5-2 kHz)
L: Average attenuation characteristics in the low frequency spectrum (<0.5 kHz)
APV = Assumed Protection Value
SNR = Single Number Rating
12
1000
2000
3150
4000
6300
8000
31.4
33.2
38.4
37.0
34.8
35.6
4.9
4.2
3.6
4.4
5.5
3.5
500
1000
2000
4000
8000
27.6
31.1
33.0
32.1
39.5
7.5
6.7
4.6
6.5
7.4
20.2
24.4
28.4
25.7
32.1
L = 22 dB
Publicidad
Tabla de contenido
