NBN EN 61847 : 1998

INTRODUCTION
1 Scope
2 Normative references
3 Definitions
4 List of symbols
5 General measurement requirements
    5.1 Operating conditions
    5.2 Load conditions
    5.3 Preparation for measurements
6 Measurement procedures
    6.1 Primary tip vibration excursion
    6.2 Secondary tip vibration excursion
    6.3 Drive frequency
    6.4 Tip vibration frequency
    6.5 Derived output acoustic power and output acoustic
          power
    6.6 Directivity pattern
    6.7 Primary tip vibration excursion modulation
    6.8 Duty cycle
    6.9 Quiescent electrical power
    6.10 Maximum electrical power
    6.11 Primary acoustic output area
    6.12 Secondary acoustic output area
    6.13 Power reserve index
7 Declaration of output characteristics
Figures
Annexes
A Measurement methods and conditions
B Theory of operation of ultrasonic surgical devices
C Bibliography
ZA Normative reference to international publications with
    their corresponding European publications

Defines the essential non-thermal output characteristics of ultrasonic surgical units.