NF EN 475 : 1995

Committees responsible
National foreword
Foreword
Introduction
1. Scope
2. Normative references
3. Definitions
4. Requirements for signals
Annexes
A. (informative) Bibliography
B. (informative) Rationale
Tables
1. Characteristics of bursts of high and medium priority
     auditory signals
2. Characteristics of the pulse for high and medium
     priority auditory signals
3. Characteristics of high, medium and low priority
     visual indications
4. Characteristics of the low priority auditory signal
Figure
1. Illustration of temporal characteristics of auditory
     signals

Specifies the characteristics of electrically-generated signals meant to be used with medical devices. Applies only if a particular device standard makes reference to it. Does not specify: the means of generating the signals; the medical devices on which alarms are to be provided; the allocation of priorities to alarms; the conditions that actuate the alarms; the characteristics of secondary alarm systems.