NF EN 61329 : 1996

1 Scope and object
2 Normative references
3 Definitions and symbols
3.1 Classification, structures and components
3.2 Characteristics, symbols and units
4 Rated conditions
5 Characteristics and measuring methods
5.1 Measuring conditions
5.2 Measuring equipment
5.3 Electroacoustic transducer characteristics of
      the sounder
5.4 Electrical and mechanical characteristics of
      sounders
5.5 Piezoelectric diaphragm
6 Physical and other characteristics
6.1 Characteristics for all transducers
6.2 Characteristics for sounders
6.3 Characteristics for piezoelectric diaphragms
7 Classification of the characteristics to be
      specified
Tables
1 Characteristics of sounders to be specified, and
      classification
2 Characteristics of piezoelectric diaphragm to be
      specified, and classification
Figures
1 Voltage and d.c. component of square-wave signals
2 Diagram of sounder measuring system
3 Diagram of sounder testing system
4 Diagram of piezoelectric diaphragm measuring system
5 Example of a diaphragm supporter
Annexes
A (informative) Bibliography
ZA (normative) Normative references to international
      publications with their corresponding European
      publications