User manual

30
Specifications
Spectral Correction for horizontal Sound Incidents using the Outdoor Microphone
The outdoor microphone M2230-WP fulfills Class 1 require-
ments of IEC 61672 and ANSI S1.4 for vertical sound incidence.
For compliance with horizontal sound incidence a spectral cor-
rection is employed in the associated XL2 Sound Level Meter.
Nominal
Frequency
[Hz]
Spectral Correction for
horizontal Sound Incidents with
Firmware V4.20 or higher
[dB]
1/3 Octave 1/1 Octave
<800 0.0 0.0
800
1000
1250
0.0
0.0
0.1
0.0
1600
2000
2500
0.1
0.3
0.7
0.4
3150
4000
5000
1.3
2.0
2.6
2.1
6300
8000
10000
2.7
3.2
3.7
3.3
12500
16000
20000
4.3
6.1
6.4
5.9