Svantek Shawcity SVAN 977C, Руководство пользователя

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289
SVAN 977C User Manual - Appendixes
Note: For the conformance of acoustical tests with SA 277C, the Microphone compensation and
the Outdoor Environment or Outdoor Airport compensation must be switched on (path:
<Menu> / Measurement / Compensation).
Statement of performance
SVAN 977C working as the SLM with SA 277C meets requirements of IEC 61672:2013 for the Class 1
instruments and IEC 91972-1:2013 for the group X.
Linear Operating Ranges with the Environmental filter
Table C.7.1 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 < 17 dB < 19 dB < 24 dB
High < 25 dB < 25 dB < 32 dB < 30 dB < 30 dB < 34 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. For
A weighting linearity test at 31.5 Hz the starting point is 79 dB.
Table C.7.2 Linear operating range: Low with the Environmental filter for the sinusoidal signal and
microphone sensitivity 50 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
25
80
27
103
27
117
32
120
25
80
27
103
27
117
28
83
52
120
500
Hz
25
116
27
119
27
120
32
120
25
116
27
119
27
120
28
119
52
123
1 kHz
25
120
27
120
27
120
32
120
25
120
27
120
27
120
28
123
52
123
4 kHz
25
121
27
119
27
119
32
120
25
121
27
119
27
119
28
124
52
123
8 kHz
25
119
27
117
27
117
32
120
25
119
27
117
27
117
28
122
52
120
12.5 kHz
25
115
27
114
27
114
32
120
25
115
27
114
27
114
28
118
52
117
Table C.7.3 Linear operating range: High with the Environmental filter for the sinusoidal signal and
microphone sensitivity 50 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
42
137
37
97 37 120
37
134
40
100
72
137
500
Hz
37
133
37
136
37
137
42
137
37
133 37 136
37
137
40
136
72
140
1 kHz
37
137
37
137
37
137
42
137
37
137 37 137
37
137
40
140
72
140
4 kHz
37
138
37
136
37
136
42
137
37
138 37 136
37
136
40
141
72
139
8 kHz
37
136
37
134
37
134
42
137
37
136 37 134
37
134
40
139
72
137
12.5 kHz
37
132
37
131
37
131
42
137
37
132 37 131
37
131
40
135
72
134