Falcon 4188 Product Data

Summary of 4188

  • Page 1

    Product data brüel & kjær b k microsoft is a registered trademark and win- dows is a trademark of microsoft corporation the falcon range 1 / 2 ″ microphones — types 4188 to 4193 uses: ❍ for sound level meters ❍ in noise measurement systems satisfying iec and ansi standards ❍ transport-noise measurem...

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    2 these factors, together with the flow chart shown in fig. 1 , will help you to make the right decision. Measurement standards you can use these microphones in noise measurement systems satisfy- ing either ansi or iec standards (or their local equivalents). The micro- phones use 50% to 70% of the t...

  • Page 3

    3 prepolarization they are prepolarized by a fixed, neg- atively charged layer deposited on the backplate of the microphone. If, however, an external polarization voltage is mistakenly applied, no per- manent damage will occur because this will cause the backplate to repel the microphone’s diaphragm...

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    4 microphone specifications the design and construction of each microphone results in a reliable transducer of high sensitivity and low temperature dependence. All data given for each microphone in this data sheet are for open-circuit conditions, which means that the mi- crophone looks into an infin...

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    5 open-circuit sensitivity (1000 hz): –30 db ± 2 db re 1 v/pa, 31.6 mv/pa * polarization voltage (external): 0 v frequency response: 0 ° incidence free-field response: ± 1 db, 12.5 hz to 8 khz ± 2 db, 8 hz to 12.5 khz in accordance with iec 651, type 1 and ansi s1.4 – 1983 lower limiting frequency (...

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    6 open-circuit sensitivity (250 hz): –26 db ± 1.5 db re 1 v/pa, 50 mv/pa * polarization voltage (external): 200 v frequency response*: 0 ° incidence free-field response: ± 1 db, 5 hz to 10 khz ± 2 db, 3.15 hz to 20 khz in accordance with iec 651, type 0 and type 1 lower limiting frequency (–3 db): 1...

  • Page 7

    7 open-circuit sensitivity (250 hz): –38 db ± 1.5 db re 1 v/pa, 12.5 mv/pa * polarization voltage (external): 200 v frequency response*: pressure-field response: 5 hz to 7 khz: ± 1 db 3.15 hz to 20 khz: ± 2 db in accordance with ansi s1.4 -1983, type 1 and ansi s1.12, type m lower limiting frequency...

  • Page 8: Brüel & Kjær

    Brüel & kjær b k bp 1380–13 world headquarters: dk-2850 naerum · denmark · telephone: +45 45 80 05 00 · fax: +45 45 80 14 05 · internet: http://www.Bk.Dk · e-mail: info@bk.Dk australia (02 ) 9450-2066 · austria 00 43-1-865 74 00 · belgium 016/44 92 25 · brazil (011) 246-8166 · canada: (514) 695-8225...