Svantek SV 977D - Page 288

288
SV 977D User Manual - Appendixes
Table C.3.4. Typical electrical noise levels Z and A weighted for SV 977D in configuration with the SV 12L
microphone preamplifier, ST 02 adapter and 50 Ohm BNC terminal for 1/3 octave filters.
1/3 octave central
frequency
Z weighting
A weighting
Low range
High range
Low range
High range
[Hz]
[µV]
[µV]
[µV]
[µV]
0.8
0.3
0.5
0.1
0.5
1
0.4
0.7
0.2
1.1
1.25
0.6
0.7
0.1
1.0
1.6
0.8
0.9
0.1
1.0
2
1.1
1.2
0.1
1.0
2.5
1.3
1.5
0.1
1.0
3.15
1.5
1.7
0.1
0.5
4
1.5
1.8
0.1
0.9
5
1.4
2.0
0.1
0.9
6.3
1.2
1.7
0.1
0.8
8
1.1
1.7
0.1
0.9
10
1.0
1.6
0.1
0.9
12.5
1.0
1.5
0.1
0.9
16
0.9
1.6
0.1
0.9
20
0.8
1.5
0.1
0.9
25
0.7
1.5
0.1
0.9
31.5
0.7
1.4
0.1
1.0
40
0.6
1.4
0.1
0.9
50
0.6
1.4
0.1
0.9
63
0.5
1.5
0.1
1.0
80
0.5
1.5
0.1
0.9
100
0.5
1.6
0.1
0.9
125
0.5
1.7
0.2
1.0
160
0.4
1.7
0.1
0.9
200
0.4
1.9
0.2
1.0
250
0.4
2.1
0.2
1.2
315
0.4
2.2
0.2
1.3
400
0.5
2.4
0.3
1.6
500
0.5
2.7
0.3
2.0
630
0.5
3.0
0.4
2.5
800
0.5
3.3
0.5
3.1
1 000
0.6
3.6
0.6
3.7
1 250
0.6
4.0
0.7
4.4
1 600
0.7
4.5
0.8
5.1
2 000
0.8
5.1
0.9
6.0
2 500
0.9
5.6
1.0
6.6
3 150
0.9
6.3
1.1
7.3
4 000
1.1
7.1
1.2
8.0
5 000
1.2
7.9
1.3
8.5
6 300
1.3
8.9
1.3
8.9
8 000
1.5
10.0
1.3
8.9
10 000
1.6
11.2
1.2
8.5
12 500
1.8
12.5
1.1
7.6
16 000
2.1
14.0
1.0
6.5
20 000
2.3
15.6
0.8
5.4