3M MT73H7A4410WS6EU - TECHNICAL SPECIFICATIONS AND DATA TABLES; HELMET MOUNTED HEADSET ATTENUATION DATA; EXTERNAL AUDIO INPUT LEVEL SPECIFICATIONS

Helmet attachment gel cushion
Art nr: MT73H7P3E4310WS6EU, MT73H7P3E4410WS6EU, MT73H7P3E4310EU, MT73H7P3E4410EU
A:1 Frequency (Hz) 125 250 500 1000 2000 4000 8000 A:5 H A:5 M A:5 L SNR
A:2 Mean attenuation (dB) 19.0 22.4 29.6 38.1 35.1 39.6 38.2
34 29 21 31A:3 Standard deviation (dB) 4.7 3.0 3.5 2.5 3.1 4.8 4.4
532
A:4 APV (dB) 14.3 19.4 26.1 35.6 32.0 34.8 33.8
A:6 EN352-4 Criterion levels
H 119 dB(A)
M 112 dB(A)
L 99 dB(A)
EXTERNAL AUDIO INPUT LEVELS EN 352-6
A:7 Cable: EN352-6 External input level
A:8 RMS
Voltage U (mV)
A:9 Mean Sound
Pressure (dB(A))
A:10 STD Sound
Pressure (dB)
14.9 63 1.1
26.6 67.9 1.1
47.2 72.9 1.1
84.0 77.9 1.1
149.4 82.7 1.1
265.6 86.9 1.0
A:11 Cable: The electrical input level
for which the sound pressure level is
equal to 82 dB(A): 120.5 mV
B) AZ/NZS 1270:2002
Headband with foam cushion
Art nr: MT73H7A4310WS6AZ, MT73H7A4310AZ
B:1 Frequency (Hz) 125 250 500 1000 2000 4000 8000 SLC
80
Class
Clamping
force Mass
B:2 Mean attenuation (dB) 20.7 23.9 32.0 33.9 36.1 39.6 39.6
32 db 5
B:3 Standard deviation (dB
)
3.5 3.3 4.0 2.2 3.7 2.6 3.3
14.1 N 447 g
B:4 Mean minus SD 17.2 20.6 28.0 31.7 32.4 37.0 36.3
Neckband with foam cushion
Art nr: MT73H7B4310WS6AZ, MT73H7B4310AZ
B:1 Frequency (Hz) 125 250 500 1000 2000 4000 8000 SLC
80
Class
Clamping
force Mass
B:2 Mean attenuation (dB) 16.1 18.6 30.1 36.0 37.4 38.0 37.7
30 dB 5
B:3 Standard deviation (dB
)
3.3 4.0 3.8 3.8 4.2 3.7 4.2
12.6 N 434
B:4 Mean minus SD 12.8 14.6 26.3 32.2 33.2 34.3 33.5