BRUEL & KJAER 2221 - Appendix; Frequency Characteristics

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+ 10
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-10
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a:
-20
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-30
4i
a:
- 40
-50
- 60
- 70
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5
5. APPENDIX
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Frequency
820538
Fig. 5. 1. Nominal A-weighting frequency characteristics
Maximum
response to
Time
Duration test tone
weight-
of test burst referred Tolerance
ing
tone burst to response
(dB)
(ms)
to continuous
signal
(dB)
Continuous
0
200
- 1,0
± 1
F
(Type
50
- 4,8
± 2
2221)
20
- 8,3
± 2
5
- 14,1
± 2
2000
- 0,6
+ 0,5
- 1
s
500
- 4,1
± 1
(Type
2222)
200 -7,4 ± 2
50
- 13,1
± 2
820536
Fig. 5.2. Fast and Slow Detector Response to tone bursts
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