MT73H7F4D10NA-50
ANSI S3.19-1974
B:1 Test Frequency (Hz)
125
250
500 1000 2000 3150 4000 6300 8000
NRR
CSA
B:2 Mean attenuation (dB)
21.2 23.7 34.3 36.6 37.4 39.6 38.9 37.9 39.2
Class
B:3 Standard deviation (dB)
3.3
2.7
2.4
2.8
2.8
3.6
2.9
2.1
3.3
AL
MT73H7B4D10NA, MT73H7B4D10NA-50
ANSI S3.19-1974
B:1 Test Frequency (Hz)
125
250
500 1000 2000 3150 4000 6300 8000
NRR
CSA
B:2 Mean attenuation (dB)
20.9 23.6 33.8 37.3 36.8 39.4 39.0 37.7 38.9
Class
B:3 Standard deviation (dB)
3.1
2.0
2.2
2.4
2.7
3.1
2.4
1.8
2.9
AL
MT73H7P3E4D10NA, MT73H7P3E4D10NA-50
ANSI S3.19-1974
B:1 Test Frequency (Hz)
125
250
500 1000 2000 3150 4000 6300 8000
NRR
CSA
B:2 Mean attenuation (dB)
19.0 21.9 30.4 35.9 36.1 37.3 37.2 34.7 34.8
Class
B:3 Standard deviation (dB)
2.1
2.4
3.1
3.5
3.0
3.5
3.3
3.2
3.3
A
B:4 Tested with 3M™ PELTOR™ Helmet Model H-700.
(C) COMPATIBLE INDUSTRIAL SAFETY HELMETS EN 352-3
C:1 Helmet Manufacturer C:2 Helmet model
C:3 Attachment
C:4 Head Size
3M
SecureFit Safety Helmet X5000
E
SML
3M
SecureFit Safety Helmet X5500
E
SML
3M
G3000 Basic set
E
L
3M
G2000
K
L
3M
G3501
E
L
3M
Versaflo M306/ 307
AF
L
3M
H-700
E
L
Grolls
Balance AC
E
L
Petzl
Vertex
E
L
Protector / Scott
Style 600
E
SML
Protector / Scott
Tuffmaster II
E
L
(D) EXTERNAL AUDIO INPUT LEVELS EN 352-6
D:1 RMS
Voltage U (mV)
D:2 Mean Sound
Pressure (dB(A))
D:3 STD Sound
Pressure (dB)
28,1
70,8
0,7
49,9
75,8
0,7
88,8
80,8
0,7
157,9
85,7
0,7
D:4 94 mV = 82 dB(A)
(E) FACTORY PROGRAMMED RADIO FREQUENCIES (*NA Models)
Channel
Frequency
(MHz)
Type
Modulation
Channel
Frequency
(MHz)
Type
Modulation
Channel
Frequency
(MHz)
Type
Modulation
1
462.5625
FRS
Analog
5
462.6625
FRS
Analog
9
467.5875
FRS
Analog
2
462.5875
FRS
Analog
6
462.6875
FRS
Analog
10
467.6125
FRS
Analog
3
462.6125
FRS
Analog
7
467.7125
FRS
Analog
11
467.6375
FRS
Analog
4
462.6375
FRS
Analog
8
467.5625
FRS
Analog
12
467.6625
FRS
Analog
27
28
25
