
Hand-held Analyzer Type 2250 –
Instruction Manual
38
Fig.4.24 Sensitivity variations of Microphone Type 4189 only and Outdoor Microphone Kit UA 1404 fitted, at sound
incidence angles within
±
θ
°
from the reference direction, see Table A.47. 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
040191
BE171211.book Page 38 Thursday, May 27, 2004 1:01 PM
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