Public-address-general-emergency-alarm-system, communication-system for marine applications

This standard describes requirements, performances and test-procedures for Public-Address-Systems (PA) and General-Alarm (GA) Communication-systems for marine applications. The standard is focused on all necessities to get a harmonized standard for marine PAGA Com.
The standard refers as much as possible to relevant established standards. Where relevant standard do not exist or are not precise enough, this standard will describe additionally own definitions , requirements performances and test-procedures

Lautsprecher-Durchsage-System-General-Notfallalarm-System, Kommunikations-System für Marine-Anwendungen

Dispositifs de communication avec le public et systèmes d'alarme générale en cas de situation critique pour applications maritimes

Le présent document décrit les exigences opérationnelles et de performances, les méthodes d'essai ainsi que les résultats d'essai exigés pour les composants des dispositifs de communication avec le public (PA), des systèmes d'alarme générale en cas de situation critique (GA) et des systèmes de communication avec le public et d'alarme générale en cas de situation critique (PAGA) pour applications maritimes indiqués dans le Tableau 1 à l'appui des exigences de l'OMI pour ces systèmes, tandis qu'il appartient au fabricant de définir les composants à homologuer ensemble ou séparément pour construire un tel système. NOTE 1 Le présent document ne traite pas de l'ingénierie des systèmes pour l'installation à bord des navires ni des exigences d'installation associées. Le présent document se réfère autant que possible aux normes établies qui sont pertinentes. En l'absence de normes pertinentes ou si celles-ci ne sont pas suffisamment précises, le présent document décrit les exigences opérationnelles et de performances, ainsi que les méthodes d'essai et les résultats d'essai exigés. NOTE 2 Tous les énoncés du présent document dont la formulation est identique à celle de la circulaire MSC.808 de l'OMI ou aux exigences de la convention SOLAS sont imprimés en italique, et la résolution ainsi que les numéros d'alinéas associés sont indiqués entre parenthèses. Le Tableau 1 décrit les exigences de l'OMI applicables à chaque combinaison catégorie de navire/type de système. Le présent document indique pour chaque article et paragraphe si celui-ci s'applique aux systèmes PA, GA et/ou PAGA. Lorsque certains articles et paragraphes du présent document sont applicables aux navires à passagers, ces articles et paragraphes s'appliquent aux "navires à passagers (non SRtP)" et aux "navires à passagers (SRtP)".

Splošni javni krizni alarmni sistem, komunikacijski sistem za pomorske aplikacije

General Information

Status
Published
Public Enquiry End Date
29-Feb-2020
Publication Date
06-Jun-2021
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
04-Jun-2021
Due Date
09-Aug-2021
Completion Date
07-Jun-2021

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SLOVENSKI STANDARD
SIST EN 50695:2021
01-julij-2021

Splošni javni krizni alarmni sistem, komunikacijski sistem za pomorske aplikacije

Public-address-general-emergency-alarm-system, communication-system for marine
applications
Lautsprecher-Durchsage-System-General-Notfallalarm-System, Kommunikations-
System für Marine-Anwendungen

Dispositifs de communication avec le public et systèmes d'alarme générale en cas de

situation critique pour applications maritimes
Ta slovenski standard je istoveten z: EN 50695:2021
ICS:
13.320 Alarmni in opozorilni sistemi Alarm and warning systems
47.020.99 Drugi standardi v zvezi z Other standards related to
ladjedelništvom in shipbuilding and marine
konstrukcijami na morju structures
SIST EN 50695:2021 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 50695:2021
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SIST EN 50695:2021
EUROPEAN STANDARD EN 50695
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2021
ICS 13.320; 47.020.70
English Version
Public-address-general-emergency-alarm-system,
communication-system for marine applications

Dispositifs de communication avec le public et systèmes Lautsprecher-Durchsage-System-General-Notfallalarm-

d'alarme générale en cas de situation critique pour System, Kommunikations-System für Marine-Anwendungen

applications maritimes

This European Standard was approved by CENELEC on 2021-04-26. CENELEC members are bound to comply with the CEN/CENELEC

Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC

Management Centre or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation

under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 50695:2021 E
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SIST EN 50695:2021
EN 50695:2021 (E)
Contents Page

European foreword ............................................................................................................................................ 3

Introduction ........................................................................................................................................................ 4

1 Scope ..................................................................................................................................................... 5

2 Normative references ........................................................................................................................... 6

3 Terms, definitions and abbreviations ................................................................................................. 6

4 Test requirements ................................................................................................................................. 9

5 Generic Performance, Safety, Marine Environmental and EMC .................................................... 10

6 External interfaces .............................................................................................................................. 11

7 General functions ............................................................................................................................... 15

8 Audio performance ............................................................................................................................. 20

9 Systems failures, redundancies, back-up and fall-back arrangements ........................................ 31

10 Loudspeakers ...................................................................................................................................... 37

11 Information requirements for system compilation .......................................................................... 38

12 Unauthorized modification of software configuration .................................................................... 39

Bibliography ..................................................................................................................................................... 40

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SIST EN 50695:2021
EN 50695:2021 (E)
European foreword

This document (EN 50695:2021) has been prepared by CLC/BTTF 157-1 “Public address and general emergency

alarm systems”.
The following dates are fixed:
• latest date by which this document has to be (dop) 2022–04–26
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2024–04–26
conflicting with this document have to be
withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights.

CENELEC shall not be held responsible for identifying any or all such patent rights.

The EU-Commission has received requests from stakeholders for the development of standards for public address

and general emergency alarm systems (entry A.2/1.5 in Annex A.2 of Directive 96/98/EC as amended by Commission

Directive (EU) 2015/559) and therefore requests the European standardization organisations start the development of

the respective standards.

The development of standards for public address and general emergency alarm systems is necessary because these

systems are very important for safety on board and they are exposed to specific conditions (e.g. moisture, salt) which

do not occur in other circumstances. The legislative provisions will detail the modalities for assessing that equipment.

The availability of testing standards will allow these products to be included in the scope of Directive 2014/90/EU,

which in turn will allow them to be conformity assessed by a notified body and to affix the wheel mark.

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SIST EN 50695:2021
EN 50695:2021 (E)
Introduction

Public address and general emergency alarm systems have the primary purpose to inform persons on board of ships

of emergency situations, and to enable the ship’s officers relay voice messages to persons on board those ships in

emergency situations.

EN 50695 has been written in pursuit of a request of the European Commission for a standard on equipment for public

address and general emergency alarm systems (PA, GA and PAGA systems). The European Commission issued this

request with the intention of taking this standard on board the Implementing Regulations belonging to the Marine

Equipment Directive (MED), with the aim to enable and require MED certification for equipment for public address and

general emergency alarm systems (PA, GA and PAGA systems). This will ensure that such equipment complies with

all applicable requirements to that equipment set by the International Maritime Organization (IMO) in SOLAS 1974 and

the LSA-code, before it is installed on board a ship.

Equipment compliant with this standard, certified according to the Marine Equipment Directive, can thus be used to

engineer and install a public address and general emergency alarm system on board a ship flying the flag of an EU

member state.

EN 50695 has been designed to make use of existing standards where possible, and specifies clarifications of

requirements in other standards, additional requirements and methods of test and required test results where

necessary to satisfy the IMO requirements.

Equipment based on EN 54 could be used as basis for PA and PAGA systems when additionally, compliant with this

document.
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SIST EN 50695:2021
EN 50695:2021 (E)
1 Scope

This document describes operational and performance requirements, methods of testing and required test results for

components of public address systems (PA), general emergency alarm systems (GA) and public address general

emergency alarm systems (PAGA) for marine applications as in Table 1 in support of the requirements of IMO for such

systems, while it is up to the manufacturer to define the components to be type approved together or separately, to

build up a system.

NOTE 1 This document does not include system engineering for installation on board nor installation requirements.

This document refers as much as possible to relevant established standards. Where relevant standards do not exist

or are not precise enough, this document will describe additionally own operational and performance requirements,

methods of testing and required test results.

NOTE 2 All text of this document, whose wording is identical to that of IMO circular MSC.808 or to SOLAS convention

requirements, is printed in italics, and the resolution and associated paragraph numbers are indicated in brackets.

Table 1 describes the applicable IMO requirements for each combination of ship category and type of system.

Table 1 — Product-ship type matrix
GA PA PAGA
Cargo SOLAS reg. II-2/12 .1 LSA Code 7.2.2 SOLAS reg. II-2/12 .1 and .2
ship
and .2
SOLAS reg. III/6.4
SOLAS reg. III/6.4
LSA Code 7.2
LSA Code 7.2.1
Res. A.1021(26) 5.8
Res. A.1021(26) 5.10
Passenger

SOLAS reg.II-2/12 .1 SOLAS reg. II-2/12 .1 and .3 SOLAS reg. II-2/12 .1, .2 and .3

ship (not and .2
SOLAS reg. III/6.5 SOLAS reg. III/6.4, 6.5
SRtP)
SOLAS reg. III/6.4
LSA Code 7.2.2 LSA Code 7.2
LSA Code 7.2.1
MSC/Circ.808 A.1021(26) 5.8
Res. A.1021(26) 5.10
MSC/Circ.808.

Passenger SOLAS reg. II-2/12 .1 SOLAS reg. II-2/12 .1 and .3 SOLAS reg. II-2/12 .1, .2 and .3

ship
and .2
SOLAS reg. III/6.5 SOLAS reg. III/6.4, 6.5
(SRtP)
SOLAS reg. III/6.4
LSA Code 7.2.2 LSA Code 7.2
LSA Code 7.2.1
MSC/Circ.808 Res. A.1021(26) 5.8
Res. A.1021(26) 5.10
SOLAS reg. II-2/21&22 MSC/Circ.808
MSC.1/Circ.1369/Add.1 SOLAS reg. II-2/21&22
MSC.1/Circ.1369/Add.1

Unless this document explicitly states otherwise, each section in this document applies to all ship types.

This document indicates for each section if that section is applicable to PA, GA and/or PAGA systems.

Where this document makes sections applicable to “passenger ships”, these sections apply to both “Passenger ship

(not SRtP)” and “Passenger ship (SRtP)”.
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SIST EN 50695:2021
EN 50695:2021 (E)
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes

requirements of this document. For dated references, only the edition cited applies. For undated references, the latest

edition of the referenced document (including any amendments) applies.
EN IEC 60268-4:2018, Sound system equipment - Part 4: Microphones

EN 60945:2002, Maritime navigation and radiocommunication equipment and systems - General requirements -

Methods of testing and required test results (IEC 60945:2002)

EN 61162-1, Maritime navigation and radiocommunication equipment and systems - Digital interfaces - Part 1: Single

talker and multiple listeners (IEC 61162 1)

EN 61162-2, Maritime navigation and radiocommunication equipment and systems - Digital interfaces - Part 2: Single

talker and multiple listeners, high-speed transmission (IEC 61162 2)

EN IEC 61162-450, Maritime navigation and radiocommunication equipment and systems - Digital interfaces - Part

450: Multiple talkers and multiple listeners - Ethernet interconnection (IEC 61162 450)

EN 62288, Maritime navigation and radiocommunication equipment and systems - Presentation of navigation-related

information on shipborne navigational displays - General requirements, methods of testing and required test results

(IEC 62288)

EN IEC 62923-1, Maritime navigation and radiocommunication equipment and systems - Bridge alert management -

Part 1: Operational and performance requirements, methods of testing and required test results

EN IEC 62923-2, Maritime navigation and radiocommunication equipment and systems - Bridge alert management -

Part 2: Alert and cluster identifiers and other additional features
IEC 60268-1, Sound system equipment - Part 1: General (IEC 60268-1)
3 Terms, definitions and abbreviations
3.1 Terms and definitions

For the purposes of this document, the following terms, definitions and abbreviations apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1.1
alarm
high-priority alert

(MSC 302/A) Condition requiring immediate attention and action by the bridge team, to maintain the safe navigation

and safe operation of the ship
3.1.2
alert

(MSC 302/A) announcement of abnormal situations and conditions requiring attention

Note 1 to entry: Alerts are divided in four priorities: emergency alarms, alarms, warnings and cautions. An alert provides information

about a defined state change in connection with information about how to announce this event in a defined way to the system and

the operator.
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SIST EN 50695:2021
EN 50695:2021 (E)
3.1.3
bridge alert management

(MSC.302/A) overall concept for management, handling and harmonized presentation of alerts on the bridge

3.1.4
central alert management system
CAM system
combined functionality of CAM and CAM-HMI

Note 1 to entry: CAM-HMI means: (MSC.302/A) human machine interface for centralized presentation and handling of alerts on the

bridge

Note 2 to entry: CAM means (MSC.302/A) functionality for the management of the presentation of alerts on the CAM-HMI, the

communication of alert states between CAM-HMI and navigational systems and sensors. The functions may be centralized or partly

centralized in subsystems and interconnected via a standardized alert-related communication

3.1.5
control station
human machine interface (e.g. panel) for the operator to use the system
3.1.6
emergency public address
emergency PA

voice announcement used to supplement general emergency alarm having priority over the general emergency alarm

3.1.7
general emergency alarm

audible signal used on board ships to indicate an emergency situation, summoning passengers and crew to muster

stations and to initiate the actions included in the muster list
3.1.8
general emergency alarm system
GA system

equipment to distribute audible signals used on board ships in times of emergency

3.1.9
loop

transmission-path between amplifiers and loudspeakers and between controllers and active loudspeakers

Note 1 to entry: A loop may be an open or closed loop.
3.1.10
multiplication and duplication systems

combination of interconnected systems that can operate as a single system and autonomously corrects a single fault

by using the other system

Note 1 to entry: Multiplication and Duplication systems can be solved by independent systems, if they are based on the same or

different technologies, both fulfilling the requirements of this document.
3.1.11
passive loudspeaker
loudspeaker that does not include any active circuit (e.g. amplifier)
3.1.12
public address
voice announcement
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SIST EN 50695:2021
EN 50695:2021 (E)
3.1.13
public address system
PA system

electronic system comprising microphones, amplifiers, loudspeakers, and related equipment to increase and distribute

the volume (loudness) of a live spoken human voice, or other acoustic sound source

3.1.14
public address general emergency alarm system
PAGA system

equipment which has the functions and performance of both a PA system and a GA system

3.1.15
redundancy

duplication of critical components or functions of a system with the intention of increasing reliability

3.1.16
redundant system

system that includes the possibility to autonomously correct a single fault by an internal replacement functionality

3.1.17
safe return to port
facilities supporting SOLAS reg. II-2/21 and II-2/22
3.1.18
single point of failure

internal or external cause (e.g. fire) that results in the loss of communication between two or more connected

independent systems
3.2 Abbreviations
EMC Electromagnetic compatibility
EUT Equipment under test
GA General emergency alarm
IEC International electrotechnical commission
IMO International marine organization
MSC Maritime safety committee
LSA International life-saving appliance
PA Public address
PAGA Public address general alarm
RMS Root mean square
SNR Signal to noise ratio
SOLAS Safety of life at sea
SRtP Safe return to port
THD Total Harmonic Distortion
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SIST EN 50695:2021
EN 50695:2021 (E)
4 Test requirements
4.1 Equipment under test
The manufacturer shall declare for
a) which ship types and
b) which product types
as defined in Table 1 the system is designed.

The manufacturer shall document the design and lay-out of the overall system that is to comply with this standard.

This shall include:

— the manufacturer-defined components of which the system consists, if applicable, and

— the possible minimum and maximum configurations of the system.

NOTE 1 Minimum configuration means the minimum number of connected components which represents a complete system

compliant with this document.

NOTE 2 Maximum configuration means the maximum number of connected components which represents a complete system

compliant with this document.
The manufacturer shall define the EUT as part of the overall system layout.

The test report shall state which set of validated manufacturer-defined components is tested together, including their

configuration.
4.2 Test set-up

Except where stated otherwise in this document, compliance with this document shall be tested in:

— a test setup covering at least the minimum configuration according to the ships type and systems type the system

shall be certified for

— the maximum configuration as describe by the manufacturer, shall be confirmed by measurement of a maximum

configuration or functionally and electrically representative for the maximum set-up, or inspection of documented

evidence where applicable

For the testing of loudspeakers and sounders only, a test set-up may be provided that enables testing of the

functionality of the loudspeakers only.

Insofar relevant for the tests to be performed the test set-up shall be installed according to the installation manual.

The manufacturer may specify a set of components that, when assembled as specified in the installation instructions,

perform a function of the PA, GA or PAGA system.
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SIST EN 50695:2021
EN 50695:2021 (E)
5 Generic Performance, Safety, Marine Environmental and EMC
5.1 Applicability

Applicable to all components of the PA, GA or PAGA system, including optional features, for all ship types.

5.2 Requirement

Further to the requirements of SOLAS 1974 reg. V/17 and IMO resolutions A.813(19) and A.694(17), in addition to the

requirements of this standard all components of the EUT shall comply with EN 60945, except that

— for passive loudspeakers EN 60945:2002, Clauses 9 and 10 do not apply; and
— for equipment for which the installation manual requires installation:
— outside the bridge, and

— away from mandatory receiving antenna’s as specified in IEC 60533 and/or EN 60945,

EN 60945:2002, Clauses 9 and 10 may be replaced with the requirements of IEC 60533.

For the purpose of EN 60945, where for a component of the EUT no applicable definitions for performance test and

performance check are stated in an IEC or EN equipment standard, the following definitions apply:

— Performance test: Perform any operator action in the EUT and confirm by non-quantitative observation that the

system is still operative. Where no operator action is available in the EUT (e.g. a loudspeaker), activate a primary

function of the EUT (e.g. to produce sound) and confirm by non-quantitative observation that the system is still

operative.
— Performance check: Identical to the performance test.

For all components of the EUT, the manufacturer shall declare the EN 60945 environment category to which the

components are successfully tested. The manufacturer’s documentation that will be available with the equipment shall

reflect the applicable EN 60945 environment categories for all components. The applicable category may also be

marked on the equipment.

The manufacturer’s documentation that will be available with the equipment shall reflect the compass safe distances

of all components of the EUT or the instruction to install the components at least 5 m from the compass. The compass

safe distance shall at least be marked on portable equipment.
5.3 Methods of test and required test results

Confirm by inspection of the manufacturer’s documentation that will be available with the EUT, that, in pursuit of the

EN 60945 requirements, the following documentation is available and is in compliance with the requirements of

EN 60945:
— manual for operation of the EUT;
— manual for maintenance of the EUT;
— manual for installation of the EUT.
These manuals may be combined.

Confirm by inspection of the manufacturer’s documentation that will be supplied with the EUT, that it holds:

— the applicable environment category of the equipment of all components of the EUT; and

— the compass safe distance of all components of the EUT, or instructions to install the components of the EUT with

at least 5 m separation from any compass.
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SIST EN 50695:2021
EN 50695:2021 (E)
These markings may also be affixed to the components.

Refer to the manufacturer’s documentation that will be available with the equipment to identify equipment for which the

applicable EN 60945 environment category is portable. Confirm by observation that this equipment is marked with the

compass safe distance or with instructions to install the equipment with at least 5 m separation from any compass.

Confirm by inspection of documented evidence that the EUT complies with the requirements of EN 60945 for

— marine environment;
— marine power supply; and
— marine special purpose tests.

For equipment other than passive loudspeakers, also confirm by inspection of documented evidence that the EUT

complies with the requirements of EN 60945 for marine EMC (EN 60945:2002, Clauses 9 and 10), where for equipment

for which the installation manual requires installation
— outside the bridge, and

— away from mandatory receiving antenna’s as specified in IEC 60533 and/or EN 60945,

EN 60945:2002, Clauses 9 and 10, may be replaced with the requirements of IEC 60533.

For equipment for which the requirements of EN 60945:2002, Clauses 9 and 10 were replaced with the requirements

of IEC 60533, confirm by inspection of manufacturer’s documentation that the installation manual contains a

requirement to install that equipment
— outside the bridge, and

— away from mandatory receiving antenna’s as specified in IEC 60533 and/or EN 60945.

Such information may also be affixed to the equipment itself.

For the EN 60945 requirements for which compliance is not confirmed by documented evidence, perform the

corresponding EN 60945 test and confirm by analytical evaluation that the EUT complies with those EN 60945

requirements.
6 External interfaces
6.1 Overview
Figure 1 gives an overview of the external interfaces of PA, GA and PAGA Systems
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SIST EN 50695:2021
EN 50695:2021 (E)
Key
1 User
2 Central alert management (CAM), see 6.2.2
3 Public address (PA), general alarm (GA), combined system (PAGA)
4 Audio communication system, see 6.5
5 External device, see 6.5
Figure 1 — Overview external interfaces
6.2 Bridge alert management
6.2.1 Applicability
PA and/or GA and/or PAGA system that provides alerts to the operator.

The requirements apply both to the user interface and to the technical interfaces of the equipment.

6.2.2 Requirement

The equipment shall implement one or more technical interfaces according to EN 61162-1, EN 61162-2 and/or EN

IEC 61162-450 for the purpose of bridge alert management, at least for connection to a central alert management

system.
The equipment shall comply with EN IEC 62923-1 and EN IEC 62923-2.
6.2.3 Method of test and required results

Confirm by inspection of manufacturer’s documentation that the equipment contains one or more technical interfaces

according to EN 61162-1, EN 61162-2 and/or EN IEC 61162-450 for the purpose of bridge alert management, at least

for connection to a central alert management system.

Confirm by inspection of documented evidence that the equipment complies with EN IEC 62923-1 and EN IEC 62923-2

and, if applicable, EN 61162-1, EN 61162-2 and/or EN IEC 61162-450.
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SIST EN 50695:2021
EN 50695:2021 (E)
6.3 Display of information on the navigation bridge
6.3.1 Applicability

GA and/or PA and/or PAGA system that features a display that can be fitted on the bridge of a ship. Display is in this

context referred to as all means for presenting information such as, but not limited to, printed text, indicators, LED and

screens.
6.3.2 Requirement

The PA and/or GA and/or PAGA shall comply as applicable with the general requirements for displays contained in

EN 62288.
6.3.3 Method of tests and required results

Confirm by inspection of documented evidence that displays of the PA and/or GA and/or PAGA system that can be

fitted on the bridge of a ship comply with EN 62288.
6.4 Marking and labelling of controls and indications
6.4.1 Applicability
This requirement is applicable for PA, GA, and PAGA systems.
6.4.2 Requirement

The controls and indications on the control station shall be clearly labelled (MSC / Circ 808 2.2.1) to avoid

misunderstanding and misinterpretation.
6.4.3 Method of tests and required results

Confirm by observation that all controls and indications on the control station are clearly labelled to avoid

misunderstanding and misinterpretation.
6.5 Interface for external devices
6.5.1 Applicability

All mandatory and optional interfaces on PA, GA and PAGA systems to external devices, such as light beacons,

sounders, ship’s whistle, siren, UHF systems, intercom systems, telephone systems, audio communication systems,

background music control, control of external volume regulators, entertainment muting and local mute relays.

6.5.2 Requirement

PAGA systems shall have at least the following interfaces for external device: light beacons and ship’s whistle.

GA systems shall have at least the following interfaces for external device: light beacons, sounders and ship’s whistle.

Any short circuit, interruption or earth fault in a transmission path to the external devices shall not impact any other

transmission path except for the functions of the connected external device.

All mandatory and optional interfaces to external devices shall be described in the interface requirements specification

of the manufacturer.
6.5.3 Method of tests and required results

Refer to the manufacturer’s documentation for the available interfaces for external devices.

Confirm by inspection of documentation that all interfaces to external devices are described in the interface

requirements specification.
Confirm by inspection of manufacturer’s documentation that:

— PAGA systems at least have interfaces available for external light beacons and ship’s whistle.

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SIST EN 50695:2021
EN 50695:2021 (E)

— GA systems at least have interfaces available for external light beacons, sounders and ship’s whistle.

For all available interfaces for external devices, perform the below tests.
Where in below tests “emergency signalling” is described this means:
— For PA systems: emergency PA
— For GA systems: activated GA
— For PAGA systems: emergency PA and activated GA
Short circuit test:

1. Short circuit the interface to external devices (except the interface from PA to mute GA) during ongoing emergency

signalling.

2. Expected result is that the emergency signalling had no interruption due to the short circuit, however the short-

circuited interface may interrupt.
3. Stop emergency signalling.
4. Expected result is that the emergency signalling is stopped
5. Perform new emergency signalling.
6. Expected result is, that the emergency signalling is started.
Interruption test:

1. Disconnect the interface to external devices during ongoing emergency signalling.

2. Expected res
...

SLOVENSKI STANDARD
oSIST prEN 50695:2020
01-marec-2020

Splošni javni krizni alarmni sistem, komunikacijski sistem za pomorske aplikacije

Public-address-general-emergency-alarm-system, communication-system for marine
applications
Lautsprecher-Durchsage-System-General-Notfallalarm-System, Kommunikations-
System für Marine-Anwendungen
Ta slovenski standard je istoveten z: prEN 50695:2019
ICS:
13.320 Alarmni in opozorilni sistemi Alarm and warning systems
47.020.99 Drugi standardi v zvezi z Other standards related to
ladjedelništvom in shipbuilding and marine
konstrukcijami na morju structures
oSIST prEN 50695:2020 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 50695:2020
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oSIST prEN 50695:2020
EUROPEAN STANDARD DRAFT
prEN 50695
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2019
ICS
English Version
Public-address-general-emergency-alarm-system,
communication-system for marine applications
To be completed Lautsprecher-Durchsage-System-General-Notfallalarm-
System, Kommunikations-System für Marine-Anwendungen
This draft European Standard is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2020-02-21.
It has been drawn up by CLC/BTTF 157-1.

If this draft becomes a European Standard, CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which

stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CENELEC in three official versions (English, French, German).

A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to

the CEN-CENELEC Management Centre has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to

provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and

shall not be referred to as a European Standard.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Project: 67292 Ref. No. prEN 50695:2019 E
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Contents Page

European foreword ............................................................................................................................................ 6

Introduction ........................................................................................................................................................ 7

1 Scope ..................................................................................................................................................... 8

2 Normative references ........................................................................................................................... 9

3 Terms, definitions and abbreviations ................................................................................................. 9

3.1 Terms and definitions .......................................................................................................................... 9

3.2 Abbreviations ...................................................................................................................................... 11

4 Generic Performance, Safety, Marine Environmental and EMC .................................................... 11

4.1 Applicability ......................................................................................................................................... 11

4.2 Requirement ........................................................................................................................................ 11

4.3 Methods of test and required test results ........................................................................................ 12

5 External interfaces .............................................................................................................................. 12

5.1 Overview .............................................................................................................................................. 12

5.2 Bridge alert management ................................................................................................................... 13

5.2.1 Applicability ......................................................................................................................................... 13

5.2.2 Requirement ........................................................................................................................................ 13

5.2.3 Method of test and required results.................................................................................................. 13

5.3 User interface on navigation bridge ................................................................................................. 14

5.3.1 Applicability ......................................................................................................................................... 14

5.3.2 Requirement ........................................................................................................................................ 14

5.3.3 Method of tests and required results................................................................................................ 14

5.4 Interface for external devices ............................................................................................................ 14

5.4.1 Applicability ......................................................................................................................................... 14

5.4.2 Requirement ........................................................................................................................................ 14

5.4.3 Method of tests and required results................................................................................................ 14

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5.5 Audio communication system ...........................................................................................................15

5.5.1 Applicability .........................................................................................................................................15

5.5.2 Requirement .........................................................................................................................................15

5.5.3 Method of tests and required results ................................................................................................15

6 General functions ................................................................................................................................16

6.1 Control functions .................................................................................................................................16

6.1.1 Manual activation of alarm signals ....................................................................................................16

6.1.2 PA announcements .............................................................................................................................17

6.1.3 Feedback handling during live PA call ..............................................................................................18

6.1.4 Indicators on control station ..............................................................................................................19

6.2 Priority ..................................................................................................................................................19

6.2.1 Priority between Emergency alarms and PA ....................................................................................19

6.2.2 Priority between PA control stations ................................................................................................21

6.3 Marking and labelling of PA and alarm controls ..............................................................................21

6.3.1 Applicability .........................................................................................................................................21

6.3.2 Requirement .........................................................................................................................................21

6.3.3 Method of tests ....................................................................................................................................22

7 Audio performance ..............................................................................................................................22

7.1 General emergency alarm (GA) generation ......................................................................................22

7.1.1 Applicability .........................................................................................................................................22

7.1.2 Requirement .........................................................................................................................................22

7.1.3 Method of tests and required results ................................................................................................22

7.2 Alarm frequency ..................................................................................................................................22

7.2.1 Applicability .........................................................................................................................................22

7.2.2 Requirement .........................................................................................................................................23

7.2.3 Method of tests and required results ................................................................................................23

7.3 Output power of amplifier ...................................................................................................................24

7.3.1 Applicability .........................................................................................................................................24

7.3.2 Requirement .........................................................................................................................................24

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7.3.3 Method of tests and required results................................................................................................ 24

7.4 Signal to Noise Ratio .......................................................................................................................... 27

7.4.1 Applicability ......................................................................................................................................... 27

7.4.2 Requirement ........................................................................................................................................ 27

7.4.3 Method of tests and required results................................................................................................ 27

7.5 System frequency response with microphones .............................................................................. 29

7.5.1 Applicability ......................................................................................................................................... 29

7.5.2 Requirement ........................................................................................................................................ 29

7.5.3 Method of tests and required results................................................................................................ 30

7.6 System frequency response without microphone(s) ...................................................................... 31

7.6.1 Applicability ......................................................................................................................................... 31

7.6.2 Requirement ........................................................................................................................................ 31

7.6.3 Method of tests and required results................................................................................................ 32

8 Systems failures, redundancies, back-up and fall-back arrangements ........................................ 34

8.1 Power redundancy and change-over to emergency power ........................................................... 34

8.1.1 Applicability ......................................................................................................................................... 34

8.1.2 Requirement ........................................................................................................................................ 34

8.1.3 Method of tests and required results................................................................................................ 34

8.2 Warning on power failure ................................................................................................................... 35

8.2.1 Applicability ......................................................................................................................................... 35

8.2.2 Requirement ........................................................................................................................................ 35

8.2.3 Method of tests and required results................................................................................................ 36

8.3 Minimize the effect of Single Failure................................................................................................. 36

8.3.1 Applicability ......................................................................................................................................... 36

8.3.2 Requirement ........................................................................................................................................ 36

8.3.3 Method of tests and required results................................................................................................ 37

8.4 System redundancy by independent systems ................................................................................ 37

8.4.1 Applicability ......................................................................................................................................... 37

8.4.2 Requirement ........................................................................................................................................ 37

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8.4.3 Method of tests ....................................................................................................................................38

9 Loudspeakers ......................................................................................................................................38

9.1 General .................................................................................................................................................38

9.2 Short circuit protection .......................................................................................................................38

9.2.1 Applicability .........................................................................................................................................38

9.2.2 Requirement .........................................................................................................................................38

9.2.3 Method of tests ....................................................................................................................................38

10 Design requirements ...........................................................................................................................38

10.1 Engineering description .....................................................................................................................38

10.1.1 Applicability .........................................................................................................................................38

10.1.2 Requirement .........................................................................................................................................38

10.1.3 Method for test .....................................................................................................................................39

10.2 Information in the product data sheet – loudspeakers....................................................................39

10.2.1 Applicability .........................................................................................................................................39

10.2.2 Requirement .........................................................................................................................................39

10.2.3 Method for test .....................................................................................................................................39

11 Unauthorized modification of software configuration .....................................................................39

11.1 Applicability .........................................................................................................................................39

11.2 Requirement .........................................................................................................................................39

11.3 Method of tests ....................................................................................................................................39

Bibliography ......................................................................................................................................................40

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European foreword

This document (prEN 50695:2019) has been prepared by CLC/BTTF 157-1 “Public address and general emergency

alarm systems”.
This document is currently submitted to the Enquiry.
The following dates are proposed:
• latest date by which the existence of this (doa) dor + 6 months
document has to be announced at national
level
• latest date by which this document has to be (dop) dor + 12 months
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) dor + 36 months
conflicting with this document have to be (to be confirmed or
withdrawn modified when voting)

The EU-Commission has received requests from stakeholders for the development of standards for public address

and general emergency alarm systems (entry A.2/1.5 in Annex A.2 of Directive 96/98/EC as amended by Commission

Directive (EU) 2015/559) and therefore requests the European standardization organisations start the development of

the respective standards.

The development of standards for public address and general emergency alarm systems is necessary because these

systems are very important for safety on board and they are exposed to specific conditions (e.g. moisture, salt) which

do not occur in other circumstances. The legislative provisions will detail the modalities for assessing those equipment.

The availability of testing standards will allow these products to be included in the scope of Directive 2014/90/EU,

which in turn will allow them to be conformity assessed by a notified body and to affix the wheel mark.

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Introduction

Public Address and General Emergency Alarm Systems have the primary purpose to inform persons on board of

vessels of emergency situations, and to enable the ship’s officers relay voice messages to persons on board those

vessels in emergency situations.

EN 50695 has been written in pursuit of a request of the European Commission for a standard on equipment for Public

Address and General Emergency Alarm Systems (PA-, GA- and PAGA-systems). The European Commission issued

this request with the intention of taking this standard on board the Implementing Regulations belonging to the Marine

Equipment Directive (MED), with the aim to enable and require MED certification for equipment for Public Address and

General Emergency Alarm Systems (PA-, GA- and PAGA-systems). This will ensure that such equipment complies

with all applicable requirements to that equipment set by the International Maritime Organization (IMO) in SOLAS 1974

and the LSA-code, before it is installed on board a vessel.

Equipment compliant with this standard, certified according to the Marine Equipment Directive, can thus be used to

engineer and install a Public Address and General Emergency Alarm System on board a vessel flying the flag of a EU

member state.

EN 50695 has been designed to make use of existing standards where possible, and specifies clarifications of

requirements in other standards, additional requirements and methods of test and required test results where

necessary to satisfy the IMO requirements.
This document is focussed on the MED approval of components.
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1 Scope

This document describes operational and performance requirements, methods of testing and required test results for

components of Public-Address-Systems (PA), General-Emergency Alarm Systems (GA) and Public-Address General-

Emergency Alarm Systems (PAGA) for marine applications (ships) in support of the requirements of IMO for such

systems, while it is up to the manufacturer to define the components to be type approved together or separately, to

build up a system.

NOTE 1 This part of the document does not include system engineering for installation on board nor installation requirements.

This document refers as much as possible to relevant established standards. Where relevant standards do not exist

or are not precise enough, this document will describe additionally own operational and performance requirements,

methods of testing and required test results.

NOTE 2 All text of this document, whose wording is identical to that of IMO circular MSC.808 or to SOLAS convention

requirements, is printed in italics, and the resolution and associated paragraph numbers are indicated in brackets.

Table 1 describes the applicable IMO requirements for each combination of vessel category and type of system.

Table 1 — Requirement matrix
GA PA PAGA
Cargo SOLAS II-2/12 .1 and LSA Code 7.2.2 SOLAS II-2/12 .1 and .2
SOLAS III/6.4
SOLAS III/6.4
LSA Code 7.2
LSA Code 7.2.1
Res. A.1021(26) 5.8
Res. A.1021(26) 5.10

Passenger SOLAS II-2/12 .1 and SOLAS II-2/12 .1 and .3 SOLAS II-2/12 .1, .2 and .3

ship (not .2
SOLAS III/6.5 SOLAS III/6.4, 6.5
SRtP)
SOLAS III/6.4
LSA Code 7.2.2 LSA Code 7.2
LSA Code 7.2.1
MSC/Circ.808 A.1021(26) 5.8
Res. A.1021(26) 5.10
MSC/Circ.808.

Passenger SOLAS II-2/12 .1 and SOLAS II-2/12 .1 and .3 SOLAS II-2/12 .1, .2 and .3

ship
SOLAS III/6.5 SOLAS III/6.4, 6.5
(SRtP)
SOLAS III/6.4
LSA Code 7.2.2 LSA Code 7.2
LSA Code 7.2.1
MSC/Circ.808 Res. A.1021(26) 5.8
Res. A.1021(26) 5.10
SOLAS II-2/21&22 MSC/Circ.808
MSC.1/Circ.1369/Add.1 SOLAS II-2/21&22
MSC.1/Circ.1369/Add.1

Each clause of this document is applicable for all ships type if not explicitly stated otherwise.

Each clause of this document indicates for which type of system it is applicable.

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2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes

requirements of this document. For dated references, only the edition cited applies. For undated references, the latest

edition of the referenced document (including any amendments) applies.

EN IEC 60268-4:2008, Sound system equipment - Part 4: Microphones (IEC 60268-4:2008)

EN 60945:2002, Maritime navigation and radiocommunication equipment and systems - General requirements -

Methods of testing and required test results (IEC 60945:2002)

EN 61162-1, Maritime navigation and radio communication equipment and systems, - Digital interfaces, Part 1: -Single

talker and multiple listeners (IEC 61162-1)

EN 61162-2, Maritime navigation and radiocommunication equipment and systems - Digital interfaces - Part 2: Single

talker and multiple listeners, high-speed transmission (IEC 61162-2)

EN 61162-450, Maritime navigation and radiocommunication equipment and systems - Digital interfaces - Part 450:

Multiple talkers and multiple listeners - Ethernet interconnection (IEC 61162-450)

EN 62288, Maritime navigation and radiocommunication equipment and systems - Presentation of navigation-related

information on shipborne navigational displays - General requirements, methods of testing and required test results

(IEC 62288)

EN IEC 62923-1, Maritime navigation and radiocommunication equipment and systems - Bridge alert management -

Part 1: Operational and performance requirements, methods of testing and required test results (IEC 62923-1)

IEC 60268-1, Sound system equipment - Part 1: General
3 Terms, definitions and abbreviations

For the purposes of this document, the following terms, definitions and abbreviations apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
3.1 Terms and definitions
3.1.1
Public Address system
PA system

electronic system comprising microphones, amplifiers, loudspeakers, and related equipment to increase and distribute

the volume (loudness) of a live spoken human voice, or other acoustic sound source, into areas

3.1.2
general emergency alarm system
GA system

equipment to distribute audible signals used on board ships in times of emergency

3.1.3
Public-Address-General-Emergency-Alarm system
PAGA system

equipment which has the functions and performance of both a PA system and a GA system

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3.1.4
control station
human machine interface (e.g. panel) for the operator to use the system
3.1.5
alarm
high-priority alert

(MSC 302/A) Condition requiring immediate attention and action by the bridge team, to maintain the safe navigation

and safe operation of the ship
3.1.6
redundancy

duplication of critical components or functions of a system with the intention of increasing reliability

3.1.7
Emergency Public Address
Emergency PA

voice announcement used to supplement general emergency alarm having priority over the general emergency alarm

3.1.8
public address
voice announcement
3.1.9
general emergency alarm

audible signal used on board ships to indicate an emergency situation, summoning passengers and crew to muster

stations and to initiate the actions included in the muster list
3.1.10
alert

(MSC 302/A) announcement of abnormal situations and conditions requiring attention

Note 1 to entry: Alerts are divided in four priorities: emergency alarms, alarms, warnings and cautions. An alert provides information

about a defined state change in connection with information about how to announce this event in a defined way to the system and

the operator.
3.1.11
bridge alert management

(MSC.302/A) overall concept for management, handling and harmonized presentation of alerts on the bridge

3.1.12
Central Alert Management System
CAM System
combined functionality of CAM and CAM-HMI

Note 1 to entry: CAM-HMI means: (MSC.302/A) human machine interface for centralized presentation and handling of alerts on the

bridge
3.1.13
CAM means

(MSC.302/A) functionality for the management of the presentation of alerts on the CAM-HMI, the communication of

alert states between CAM-HMI and navigational systems and sensors. The functions may be centralized or partly

centralized in subsystems and interconnected via a standardized alert-related communication

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3.1.14
loop
transmission-path between amplifiers
...

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