Weatherproof Microphone Unit Type 4184-A – Supplement to Instruction Manual BE 1712
14
Maximum Broadband Self-generated Noise
Typical Broadband Self-generated Noise
Table 4.1
Maximum broadband
self-generated noise
Maximum
Noise
Frequency Weighting
A-weighting
(dB)
B-weighting
(dB)
C-weighting
(dB)
Z-weighting
*
(dB)
*.
minimum 120 seconds L
Zeq
Z-weighting
*
Extended Low
Frequency
(dB)
Single-range
Microphone
21.1
19.7
19.7
23.7
23.7
Electrical
29.0
27.6
28.1
33.3
44.3
Total
29.7
28.3
28.7
33.8
44.3
High Range
Microphone
21.1
19.7
19.7
23.7
23.7
Electrical
47.9
46.3
46.3
51.1
51.9
Total
47.9
46.3
46.3
51.1
51.9
Low Range
Microphone
21.1
19.7
19.7
23.7
23.7
Electrical
29.0
27.6
28.1
33.3
44.3
Total
29.7
28.3
28.7
33.8
44.3
Table 4.2
Typical broadband
self-generated noise
Typical
Noise
Frequency Weighting
A-weighting
(dB)
B-weighting
(dB)
C-weighting
(dB)
Z-weighting
*
(dB)
*.
minimum 120 seconds L
Zeq
Z-weighting
*
Extended Low
Frequency
(dB)
Single-range
Microphone
20.1
18.7
18.7
22.7
22.7
Electrical
28.2
26.8
27.3
32.5
39.3
Total
28.8
27.4
27.9
32.9
39.4
High Range
Microphone
20.1
18.7
18.7
22.7
22.7
Electrical
44.4
42.8
42.8
47.6
48.1
Total
44.4
42.8
42.8
47.6
48.1
Low Range
Microphone 20.1
18.7
18.7
22.7
22.7
Electrical
28.2
26.8
27.3
32.5
39.3
Total
28.8
27.4
27.9
32.9
39.4
Summary of Contents for 4184-A
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