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Calibration Certificate <br />Part Number: 714A0401 <br />Description: LINEAR MICROPHONE BMIII <br />Date: November 17, 2000 <br />Unit S/N: BH6508 <br />TEST REFERENCES Model Serial No. <br /> <br />Stanford Spectrum Analyzer* SR760 41067 <br />Good Will Inst. Frequency Counter* GUC-2010G 5110825 <br />Fluke Multime[er* 87 64900577 <br />VOD Cable Simulation Test Jig 717J0201 n/a <br />Bruel &Kjaer Accelerometer* 4370 925067 <br />Bruel &Kjaer Charge Amplifier* 2635 974792 <br />Bruel &Kjaer Mic Power Supply* 2804 1904947 <br />Bruel &Kjaer Microphone Preamplifier* 2669 1834210 <br />Bruel &, Kjaer Microphone Element* 4193 1863904 <br />INSTANTEL INC. hereby certifies that this unit has been calibrated and that <br />the results are consistent with the specifications published regarding this <br />instrument. The SENSORCHECK feature of the unit is sufficiently reliable <br />to indicate proper operation, although it is recommended that this unit be <br />sent to INSTANTEL or an authorized service centre for regular calibration. <br />AUTHORIZED BY: `~ <br />*References aze traceable to NRC, NIST or equivalent <br />0 <br />© Ias[anlel Inc. 1999 _~ _~ _~ _- _~ x'-065201 Rev Ol <br />