EN-4
RANGE: 50 – 110 dB. Test starting point 84 dB for all weightings and frequencies except
31.5Hz A-weighted, for which the starting point is 64 dB.
FREQUENCY
Hz
WEIGHTING
L.O.R
dB
WEIGHTING
L.O.R
dB
31.5 A 50.0 – 70.6 C 50.0 – 107.0
1000 A 50.0 – 110.0 C 50.0 – 110.0
4000 A 50.0 – 110.0 C 50.0 – 109.2
8000 A 50.0 – 108.9 C 50.0 – 107.0
RANGE: 60 – 120 dB. Test starting point 94 dB for all weightings and frequencies except
31.5Hz A-weighted, for which the starting point is 74 dB.
FREQUENCY
Hz
WEIGHTING
L.O.R.
dB
WEIGHTING
L.O.R.
dB
31.5 A 60.0 – 80.6 C 60.0 – 117.0
1000 A 60.0 – 120.0 C 60.0 – 120.0
4000 A 60.0 – 120.0 C 60.0 – 119.2
8000 A 60.0 – 118.9 C 60.0 – 117.0
RANGE: 70 – 130 dB. Test starting point 104 dB for all weightings and frequencies
except 31.5Hz A-weighted, for which the starting point is 84 dB.
FREQUENCY
Hz
WEIGHTING
L.O.R.
dB
WEIGHTING
L.O.R.
dB
31.5 A 70.0 – 90.6 C 70.0 – 127.0
1000 A 70.0 – 130.0 C 70.0 – 130.0
4000 A 70.0 – 130.0 C 70.0 – 129.2
8000 A 70.0 – 128.9 C 70.0 – 127.0
Frequency range
:
Overall characteristics including microphone: 31.5 to 8000Hz
Frequency weighting: A
,
meets the requirement of IEC 61672-1 for class 2
“A” weighting.
C
,
meets the requirement of IEC 61672-1 for class 2
“C” weighting.
Time weighting (RMS detection): Fast
, according to IEC 61672-1 class 2.
Slow
, according to IEC 61672-1 class 2.
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