IEC 61162-2:2024

Maritime navigation and radiocommunication equipment and systems - Digital interfaces - Part 2: Single talker and multiple listeners, high-speed transmission

IEC 61162-2:2024 contains the requirements for data communication between maritime electronic instruments, navigation and radiocommunication equipment when interconnected via an appropriate interface. This document is intended to support one-way serial data transmission from a single talker to one or more listeners. This data is in printable ASCII form and can include any information as specified by approved sentences or information coded according to the rules for proprietary sentences. Typical messages can be from 11 to a maximum of 79 characters in length and generally require repetition rates up to once per 20 ms. The electrical definitions in this document are intended to accommodate higher data rates than are specified in IEC 61162-1. Since there is no provision for guaranteed delivery of messages and only limited error-checking capability, it is important this document is used with caution in all safety applications.

Matériels et systèmes de navigation et de radiocommunication maritimes - Interfaces numériques - Partie 2: Emetteur unique et récepteurs multiples, transfert rapide de données

L'IEC 61162-2:2024 contient les exigences de communication des données entre les instruments maritimes électroniques, les matériels de navigation et de radiocommunication, lorsqu'ils sont interconnectés par l'intermédiaire d'une interface appropriée. Le présent document est destiné à prendre en charge l'émission unidirectionnelle de données série entre un seul émetteur et un ou plusieurs récepteurs. Ces données sont représentées au format ASCII imprimable et peuvent contenir toutes les informations spécifiées par des sentences approuvées ou des informations codées selon les règles de sentences propriétaires. Les messages types peuvent contenir de 11 à 79 caractères au maximum, le taux de répétition exigé étant généralement d'un message toutes les 20 ms au maximum. Les définitions électriques du présent document ont pour objet de tenir compte des débits de données plus élevés que ceux spécifiés dans l'IEC 61162-1. En l'absence de disposition assurant l'émission des messages, et compte tenu de la fonctionnalité limitée de vérification des erreurs, il est important que le présent document soit utilisé avec précaution dans toutes les applications de sécurité.

General Information

• Status: Published
• Publication Date: 03-Apr-2024
• ICS: 47.020.70 - Navigation and control equipment
• Technical Committee: TC 80 - Maritime navigation and radiocommunication equipment and systems
• Drafting Committee: WG 6 - TC 80/WG 6
• Current Stage: PPUB - Publication issued
• Start Date: 01-Dec-2023
• Completion Date: 04-Apr-2024

Relations

• Revises: IEC 61162-2:1998 - Maritime navigation and radiocommunication equipment and systems - Digital interfaces - Part 2: Single talker and multiple listeners, high-speed transmission
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 61162-2 ®
Edition 2.0 2024-04
COMMENTED VERSION
INTERNATIONAL
STANDARD
colour
inside
Maritime navigation and radiocommunication equipment and systems –
Digital interfaces –
Part 2: Single talker and multiple listeners, high-speed transmission
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.
IEC Secretariat Tel.: [phone]
3, rue de Varembé [e-mail]
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
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IEC 61162-2 ®
Edition 2.0 2024-04
COMMENTED VERSION
INTERNATIONAL
STANDARD
colour
inside
Maritime navigation and radiocommunication equipment and systems –
Digital interfaces –
Part 2: Single talker and multiple listeners, high-speed transmission
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 47.020.70 ISBN 978-2-8322-8713-2
– 2 – IEC 61162-2:2024 CMV © IEC 2024
CONTENTS
FOREWORD .4
1 General .
1 Scope .6
2 Normative references .6
3 Terms, definitions and abbreviated terms .7
3.1 Terms and definitions .7
3.2 Abbreviated terms .7
4 Manufacturer's documentation .7
4.1 Standard documents .7
4.2 Additional information .8
5 Hardware specification .8
5.1 General .8
5.2 Interconnecting wires .8
5.3 Conductor definitions .8
5.4 Electrical connection/shield requirements .8
5.5 Connector .9
5.6 Electrical signal characteristics .9
5.6.1 Signal state definitions. 10
5.6.2 Talker drive circuits . 10
5.6.3 Listener receive circuits . 10
5.6.4 Electrical isolation . 10
5.6.5 Maximum voltage on the bus . 10
6 Data transmission . 10
7 Data format protocol. 11
5.1 Characters .
5.2 Fields .
5.3 Sentences .
5.4 Error detection and handling .
8 Data content . 16
9 Applications . 16
10 Methods of testing and required test results . 16
10.1 Test preparation . 16
10.1.1 General . 16
10.1.2 Testing under ambient conditions . 16
10.2 Test sequence . 16
10.3 Standard test signals . 16
10.4 Test of the interface . 17
10.4.1 Electrical test of the interface . 17
10.4.2 Protocol test of input and output. 17
10.4.3 Test under maximum interface workload . 17
Annex A (informative) IMO resolutions and ITU recommendations and relevant
IEC/ISO standards to which this standard applies for maritime navigation and
radiocommunication equipment and systems.
Annex B (informative) Glossary .
Bibliography . 28
List of comments . 29

Figure 1 – Talker/listener connections.8
Figure 2 – Cables – Electrical shield requirements .9
Figure 3 – Data transmission format . 10

Table A.1 – Navigation .
Table A.2 – Radiocommunications for the global maritime distress and safety system
(GMDSS) .

– 4 – IEC 61162-2:2024 CMV © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MARITIME NAVIGATION AND RADIOCOMMUNICATION
EQUIPMENT AND SYSTEMS – DIGITAL INTERFACES –

Part 2: Single talker and multiple listeners,
high-speed transmission
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
This commented version (CMV) of the official standard IEC 61162-2:2024 edition 2.0
allows the user to identify the changes made to the previous IEC 61162-2:1998
edition 1.0. Furthermore, comments from IEC TC 80 experts are provided to explain the
reasons of the most relevant changes, or to clarify any part of the content.
A vertical bar appears in the margin wherever a change has been made. Additions are in
green text, deletions are in strikethrough red text. Experts' comments are identified by a
blue-background number. Mouse over a number to display a pop-up note with the
comment.
This publication contains the CMV and the official standard. The full list of comments is
available at the end of the CMV.

IEC 61162-2 has been prepared by IEC technical committee 80: Maritime navigation and
radiocommunication equipment and systems. It is an International Standard.
This second edition cancels and replaces the first edition published in 1998. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) alternative hardware is given in 5.1 which may now b
...

IEC 61162-2 ®
Edition 2.0 2024-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Maritime navigation and radiocommunication equipment and systems – Digital
interfaces –
Part 2: Single talker and multiple listeners, high-speed transmission
Matériels et systèmes de navigation et de radiocommunication maritimes –
Interfaces numériques –
Partie 2: Emetteur unique et récepteurs multiples, transfert rapide de données
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.
Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni
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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.
IEC publications search - webstore.iec.ch/advsearchform IEC Products & Services Portal - products.iec.ch
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and withdrawn publications.
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containing more than 22 300 terminological entries in English
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(IEV) online.
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IEC 61162-2 ®
Edition 2.0 2024-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Maritime navigation and radiocommunication equipment and systems – Digital
interfaces –
Part 2: Single talker and multiple listeners, high-speed transmission
Matériels et systèmes de navigation et de radiocommunication maritimes –
Interfaces numériques –
Partie 2: Emetteur unique et récepteurs multiples, transfert rapide de données
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 47.020.70 ISBN 978-2-8322-7756-0
– 2 – IEC 61162-2:2024 © IEC 2024
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms, definitions and abbreviated terms . 5
3.1 Terms and definitions . 6
3.2 Abbreviated terms . 6
4 Manufacturer's documentation . 6
4.1 Standard documents . 6
4.2 Additional information . 6
5 Hardware specification . 6
5.1 General . 6
5.2 Interconnecting wires . 7
5.3 Conductor definitions . 7
5.4 Electrical connection/shield requirements . 7
5.5 Connector . 8
5.6 Electrical signal characteristics . 8
5.6.1 Signal state definitions . 8
5.6.2 Talker drive circuits . 8
5.6.3 Listener receive circuits . 8
5.6.4 Electrical isolation . 9
5.6.5 Maximum voltage on the bus . 9
6 Data transmission . 9
7 Data format protocol . 9
8 Data content . 9
9 Applications . 9
10 Methods of testing and required test results . 10
10.1 Test preparation. 10
10.1.1 General . 10
10.1.2 Testing under ambient conditions . 10
10.2 Test sequence . 10
10.3 Standard test signals . 10
10.4 Test of the interface . 10
10.4.1 Electrical test of the interface . 10
10.4.2 Protocol test of input and output . 10
10.4.3 Test under maximum interface workload . 11
Bibliography . 12

Figure 1 – Talker/listener connections. 7
Figure 2 – Cables – Electrical shield requirements . 8
Figure 3 – Data transmission format . 9

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MARITIME NAVIGATION AND RADIOCOMMUNICATION
EQUIPMENT AND SYSTEMS – DIGITAL INTERFACES –

Part 2: Single talker and multiple listeners,
high-speed transmission
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all
...