I.S. EN 60318-6:2008

FOREWORD
1 Scope
2 Normative reference
3 Terms and definitions
4 Construction
  4.1 General
  4.2 Mechanical impedance level
  4.3 Phase angle of mechanical impedance
  4.4 External geometry
5 Calibration
  5.1 Reference environmental conditions
  5.2 Calibration procedure
  5.3 Force sensitivity level
  5.4 Mechanical impedance level
  5.5 Temperature dependence
6 Marking and instruction manual
  6.1 Marking of the mechanical coupler
  6.2 Instruction manual
7 Coupling of bone vibrator to the mechanical coupler
8 Maximum permitted expanded uncertainty of measurements
Annex A (informative) Example of a specific construction of a
        mechanical coupler
Annex B (informative) Guidance on the testing and calibration
        of mechanical couplers
Annex ZA (normative) Normative references to international
         publications with their corresponding European
         publications
Bibliography

Specifies a mechanical coupler for the measurement of the output force of bone vibrators. The mechanical impedance of the coupler is specified in the frequency range 125 Hz to 8 000 Hz. The coupler is intended for calibration of audiometers using bone vibrators having a plane circular tip area of 175 mm[2] +/- 25 mm[2] and for determining the performance of bone conduction hearing aids.