
CHAPTER 4
Specifications
25
Fig.4.10 Diffuse-field frequency response for Hand-held Analyzer Type 2250 (including Microphone Type 4189), or
Microphone Type 4189 only, with Sound Field Correction parameter set to ‘Diffuse-field’ and the
Windscreen Correction parameter set to ‘None’, see Table A.7. Reduced IEC 61672–1 limits are also
drawn on the graph
Fig.4.11 Diffuse-field frequency response for Hand-held Analyzer Type 2250 (including Microphone Type 4189), or
Microphone Type 4189 only, with Windscreen UA1650 fitted, Sound Field Correction parameter set to
‘Diffuse-field’ and the Windscreen Correction parameter set to ‘Auto Detect’ or ‘UA 1650’, see Table A.8.
Reduced IEC 61672–1 limits are also drawn on the graph
Fig.4.12 Diffuse-field frequency response for Microphone Type 4189 only, with Outdoor Microphone Kit UA 1404
fitted, Sound Field Correction parameter set to ‘Diffuse-field’ and the Windscreen Correction parameter set
to UA 1404, see Table A.9. Reduced IEC 61672–1 limits are also drawn on the graph
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BE171211.book Page 25 Thursday, May 27, 2004 1:01 PM
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