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13 results for “NIST SP 250-12 (1987)

25010C-25070S Therefore,forthemostdemandingfree- fieldmeasurementrequirements,NIST offersacalibrationservice(ServiceID No.25050C)fordeterminingthefree- fieldresponselevelsforhalf-inchmicro- phones.Thecalibrationsaremade overthefrequencyrangeof2.5kHzto 20kHzatnormalincidence.Response levels(sensitivitylevels)arereportedin termsofopen-circuitvoltageperunit…

Page 73 · SP 250 · 1998 Open PDF at page 73 →