Svantek SVAN 971, Руководство пользователя

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SVAN 971 User Manual
– Appendixes
183
Linear Operating Ranges with Environmental filter
Table C.5.1. Self-generated noise for different weighting filters
Electrical *) Acoustical compensated
Weighting filter
Range
A C Z A C Z
Low < 15 dB < 15 dB < 20 dB < 16 dB < 16 dB < 21 dB
High < 26 dB < 26 dB < 31 dB < 27 dB < 27 dB < 31 dB
*) measured with the ST 02 microphone equivalent impedance 18 pF
± 10%
The starting point at which tests of level linearity shall begin is 94.0 dB for the frequencies specifies below.
Table C.5.2. Linear operating range:
“LOW” with Environmental filter for the sinusoidal signal and
microphone sensitivity 35 mV/Pa
[dB]
L
AS/F
L
BS/F
L
CS/F
L
ZS/F
L
AeqT
L
BeqT
L
CeqT
L
AE
L
Cpeak
(t
int
= 2 s)
from to from to from to from to from to from to from to from to from to
31,5 Hz 26 80 26 103 26 117 31 120 26 80 26 103 26 117 29 83 51 120
500
Hz
26 116 26 119 26 120 31 120 26 116 26 119 26 120 29 119 50 123
1 kHz 26 120 26 120 26 120 31 120 26 120 26 120 26 120 29 123 50 123
4 kHz 26 121 26 119 26 119 31 120 26 121 26 119 26 119 29 124 50 123
8 kHz 26 119 26 117 26 117 31 120 26 119 26 117 26 117 29 122 50 120
12.5
kHz
26 115 26 114 26 114 31 120 26 115 26 114 26 114 29 118 50 117
Table C.5.3. Linear operating range:
“HIGH” with
Environmental filter for the sinusoidal signal and
microphone sensitivity 35 mV/Pa
[dB]
L
AS/F
L
BS/F
L
CS/F
L
ZS/F
L
AeqT
L
BeqT
L
CeqT
L
AE
L
Cpeak
(t
int
= 2 s)
from to from to from to from to from to from to from to from to from to
31,5 Hz 37 97 37 120 37 134 41 137 37 97 37 120 37 134 40 100 64 137
500
Hz 37 133 37 136 37 137 41 137 37 133 37 136 37 137 40 136 60 140
1 kHz 37 137 37 137 37 137 41 137 37 137 37 137 37 137 40 140 60 140
4 kHz 37 138 37 136 37 136 41 137 37 138 37 136 37 136 40 141 60 139
8 kHz 37 136 37 134 37 134 41 137 37 136 37 134 37 134 40 139 60 137
12.5
kHz
37 132 37 131 37 131 41 137 37 132 37 131 37 131 40 135 60 134