Svantek SVAN 958A - Page 265

265
SVAN 958A User Manual
Table C.8.5. MK 255 Free Field corrections for 90 deg incidence angle with the use of the electrostatic
actuator
[dB]
Frequency [Hz]
20
25
31.5
40
50
63
80
100
125
160
200
250
315
400
500
630
800
Correction
factors
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
-0.05
-0.12
-0.17
-0.16
-0.14
Uncertainty
(IEC 62585)
--
--
--
--
--
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
[dB]
Frequency [Hz]
1000
1250
1600
2000
2500
3150
4000
5000
6300
8000
10000
12500
16000
20000
Correction
factors
-0.09
-0.18
-0.23
-0.17
-0.20
-0.10
0.16
0.35
0.56
1.12
1.68
2.71
3.76
4.71
Uncertainty
(IEC 62585)
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.35
0.35
0.35
0.35
0.50
0.50
0.50
Free Field frequency response of SVAN 958A with SA 277D for 90 deg incidence angle