User manual

275
Specifications
Actuator Correction
The following freefield 0° incidence corrections apply for cali-
bration using an actuator:
Nominal
Frequency
[Hz]
1/2”
Microphone M2230
(protection grid actuator)
[dB]
1/2”
Microphone M2230
(B&K UA033, Gras RA0014)
[dB]
<400 0.0
400
500
630
-0.2
0.0
-0.2
800
1000
1250
0.0
0.0
-0.1
1600
2000
2500
0.2
0.2
0.3
3150
4000
5000
0.8
1.0
1.6
6300
8000
10000
2.4
3.6
4.8
12500
16000
20000
6.5
9.3
11.7