3M PELTOR ComTac XPI Series - Page 3

3
E:1 E:2 E:3
F:1 F:2 F:3 F:4 F:5
E)
F)
MT20H682FB-*
1
Frequency (Hz)
2
125 250 500 1000 2000 4000 8000
Mean Attenuation (dB)
3
11.5 17.9 27.8 30.0 32.1 36.2 40.3
Standard Deviation (dB)
4
2.5 2.7 1.8 2.3 3.0 2.0 3.1
Assumed Protection Value (dB)
5
9.0 15.3 25.9 27.7 29.1 34.2 37.2
SNR=28 dB H=31 dB M=25 dB L=16 dB
6)
308 g
MT20H682BB-*
1
Frequency (Hz)
2
125 250 500 1000 2000 4000 8000
Mean Attenuation (dB)
3
16.6 16.8 27.4 32.1 33.1 33.0 36.1
Standard Deviation (dB)
4
1.8 2.3 2.2 2.1 3.2 2.9 3.2
Assumed Protection Value (dB)
5
14.8 14.5 25.2 30.0 29.9 30.1 32.9
SNR=28 dB H=31 dB M=25 dB L=18 dB
6)
308 g
G) Attenuation Values
H 112 dB(A)
M 96 dB(A)
L 92 dB(A)
Input (mV)
1
SPL (dB(A))
2
Standard
deviation(dB)
3
167.0 70.1 1.4
284.0 76.1 1.4
481.0 81.2 1.4
776.0 86.0 1.4
1145.0 90.5 1.4
H) External input level
H:1
H:2
I) Criterion levels
The electrical input level for which
the sound pressure level is equal to
82 dB(A) :
459.0 mV
4
The electrical input level for which
the sound pressure level is equal to
82 dB(A) :
94 mV
4
Input (mV)
1
SPL (dB(A))
2
Standard
deviation(dB)
26.0 70.6 1.4
46.0 75.4 1.4
83.0 80.4 1.4
146.0 84.5 1.3
259.0 84.5 1.3