Svantek SVAN 958A - Page 251

251
SVAN 958A User Manual
Frequency
Compensation filter
for 0 deg incidence
angle “SA277C
Airport”
Typical compensated
response of SVAN 958A
with SA 277C for 0 deg
incidence angle
Compensated Case
Effect of SA 277C for
0 deg incidence
angle
Uncertainty
(IEC 62585:2012)
[Hz]
[dB]
[dB]
[dB]
[dB]
16 312
-0.35
-7.17
-7.07
0.35
16 788
-0.91
-8.62
-8.49
0.35
17 278
-1.84
-10.32
-10.06
0.35
17 783
-3.75
-12.68
-12.44
0.35
18 302
-7.21
-16.31
-16.06
0.35
18 836
-12.73
-20.59
-20.54
0.35
19 387
-19.71
-27.17
-26.78
0.35
19 953
-22.89
-30.75
-30.54
0.35
Table C.8.12. SVAN 958A with SA 277C combined Free Field corrections with the use of the electrostatic
actuator for 0 deg incidence angle (microphone corrections + compensated Case Effect)
[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
-0.16
-0.10
0.00
-0.07
-0.13
0.01
Complex
uncertainty
--
--
--
--
--
0.35
0.35
0.35
0.35
0.35
0.35
0.35
0.35
0.35
0.35
0.35
0.35
[dB]
Frequency [Hz]
1000
1250
1600
2000
2500
3150
4000
5000
6300
8000
10000
12500
16000
20000
Correction
factors
0.21
0.24
-0.48
0.06
-0.13
0.64
1.56
1.81
2.89
3.70
5.90
5.92
3.39
-18.72
Complex
uncertainty
0.35
0.35
0.35
0.35
0.35
0.35
0.35
0.49
0.49
0.49
0.49
0.61
0.61
0.61
Free Field directional characteristics of SVAN 958A with SA 277C
Directional response of SVAN 958A with the MK 255 microphone, SV 12L preamplifier and SA 277C outdoor
microphone kit for specified frequencies:
Combined typical directional characteristics