Svantek SV 977D - Page 245

245
SV 977D User Manual - Appendixes
SV12L typical frequency response
SV 977D Free Field frequency response
Typical Free Field frequency responses of SV 977D are presented on the below figure together with the effect
of reflections and diffraction of the acoustic plane wave from the SV 977D case (“Case Effect”).
Table C.1.5. SV 977D typical Free Field frequency characteristics and Case Effect
Frequency
MK 255 typical Free
Field response
SV 977D typical Free
Field response
SV 977D
Case Effect
Uncertainty
(IEC 62585:2012)
[Hz]
[dB]
[dB]
[dB]
[dB]
251
0.03
-0.01
-0.05
0.25
259
0.02
-0.02
-0.05
0.25
266
-0.01
-0.05
-0.04
0.25
274
-0.02
-0.05
-0.03
0.25
282
-0.01
-0.04
-0.02
0.25