IEC 60849:1998

FOREWORD
1 Scope and object
    1.1 Scope
    1.2 Object
2 Normative references
3 Definitions
4 General system requirements
    4.1 Principal features
    4.2 Responsible person
    4.3 Priorities
    4.4 Safety requirements
5 System technical requirements
    5.1 Speech intelligibility
    5.2 Automatic status indication
    5.3 Automatic fault monitoring
    5.4 Monitoring of software controlled equipment
    5.5 Interface with emergency detection system
    5.6 Secondary power supply
    5.7 Climatic and environmental conditions
    5.8 Marking and symbols for marking
    5.9 Electrical matching values
    5.10 Connectors
6 Installation requirements
7 System operation
    7.1 Instructions for operation
    7.2 Records to be kept
    7.3 Maintenance
Annexes
A (informative) Measurement of speech intelligibility
B (normative) Measurement method
C (informative) Attention drawing audible signals
D (informative) Bibliography

Applies to sound reinforcement and distribution systems to be used to effect a rapid and orderly mobilization of occupants in an indoor and/or outdoor area affected by a hazard. Specifies the requirements for sound systems which are primarily intended to broadcast information for the protection of lives and property within a protected area when an emergency situation has occurred. Gives the characteristics and the methods of test necessary for the specification of the system.