
Hand-held Analyzer Type 2250 –
Instruction Manual
36
Fig.4.22 Sensitivity variations of Hand-held Analyzer Type 2250 (including Microphone Type 4189) and Windscreen
UA 1650 fitted, at sound incidence angles within
±
θ
°
from the reference direction, see Table A.40.
Reduced IEC 61672–1 limits are also drawn on the graph.
± 150°
0
5
10
15
20
dB
100 1000 10000
Hz
± 90°
0
5
10
15
20
dB
100 1000 10000
Hz
± 30°
0
5
10
15
20
dB
100 1000 10000
Hz
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BE171211.book Page 36 Thursday, May 27, 2004 1:01 PM
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