Svantek SVAN 971 - Page 183

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