EN 61266:1995
Current
The latest, up-to-date edition.
Ultrasonics - Hand-held probe Doppler foetal heartbeat detectors - Performance requirements and methods of measurement and reporting
10-04-1995
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Definitions
4 List of symbols
5 Configuration
6 Performance
6.1 Acoustic working frequency
7 Safety
8 Tests
8.1 Acoustic working frequency
8.2 Output power
8.3 Spatial-peak temporal-peak acoustic pressure
8.4 Effective area of the ultrasonic transducer active element
8.5 Overall sensitivity
9 Preferred method for reporting performance of existing
equipment
10 Specifications for labelling
11 Sampling
Annexes
A (informative) Choice of target and determination of target
plane-wave reflection loss
B (informative) Typical test equipment and test procedures
C (informative) Determination of the two-way insertion loss of
acoustic attenuators
D (informative) Rationale
E (informative) Bibliography
ZA (normative) Normative references to international
publications with their corresponding
European publications
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.