EN 60645-5:2005

INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements for specific instruments
5 General specifications
6 Demonstration of conformity with specifications
7 Calibration cavities
8 General requirements
9 Symbols, forms and formats for acoustic impedance/admittance
   data
10 Additional characteristics to be specified by the manufacturer
Annex A (informative) Routine calibration
Annex B (informative) Units and terms
Annex C (informative) Overall temporal characteristics
Annex ZA (normative) Normative references to international
                       publications with their corresponding
                       European publications
Bibliography

Applies to instruments designed primarily for the measurement of acoustic impedance/admittance in the human external acoustic meatus using a stated probe tone. It is recognized that other probe signals may also be used. The standard defines the characteristics to be specified by the manufacturer, lays down performance specifications for three types of instruments and specifies the facilities to be provided on these types. This standard describes methods of test to be used for approval testing and guidance on methods for undertaking routine calibration. The purpose of this standard is to ensure that measurements made under comparable test conditions with different instruments complying with the standard will be consistent. The standard is not intended to restrict development or incorporation of new features, nor to discourage innovative approaches. This first edition of EN 60645-5 cancels and replaces the first edition of EN 61027, published in 1991, and constitutes a technical revision.