IEC 61162-2:1998

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

IEC 61162-2:1998 Contains the requirements for data communication between maritime electronic instruments, navigation and radiocommunication equipment when interconnected via an appropriate interface. Supports one-way serial data transmission from a single talker to one or more listeners.

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

La CEI 61162-2:1998 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. La présente norme est destinée à prendre en charge l'émission unidirectionnelle de données série entre un seul émetteur et un ou plusieurs récepteurs.

General Information

• Status: Published
• Publication Date: 10-Sep-1998
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• 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

Relations

• Revised: IEC 61162-2:2024 - 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)

INTERNATIONAL
IEC
STANDARD
61162-2
First edition
1998-09
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
Reference number
Numbering
As from 1 January 1997 all IEC publications are issued with a designation in the
60000 series.
Consolidated publications
Consolidated versions of some IEC publications including amendments are

available. For example, edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the
base publication, the base publication incorporating amendment 1 and the base

publication incorporating amendments 1 and 2.

Validity of this publication
The technical content of IEC publications is kept under constant review by the IEC,
thus ensuring that the content reflects current technology.
Information relating to the date of the reconfirmation of the publication is available
in the IEC catalogue.
Information on the subjects under consideration and work in progress undertaken by
the technical committee which has prepared this publication, as well as the list of
publications issued, is to be found at the following IEC sources:
• IEC web site*
• Catalogue of IEC publications
Published yearly with regular updates
(On-line catalogue)*
• IEC Bulletin
Available both at the IEC web site* and as a printed periodical
Terminology, graphical and letter symbols
For general terminology, readers are referred to IEC 60050: International Electro-
technical Vocabulary (IEV).
For graphical symbols, and letter symbols and signs approved by the IEC for
general use, readers are referred to publications IEC 60027: Letter symbols to be
used in electrical technology, IEC 60417: Graphical symbols for use on equipment.
Index, survey and compilation of the single sheets and IEC 60617: Graphical symbols
for diagrams.
* See web site address on title page.

INTERNATIONAL
IEC
STANDARD
61162-2
First edition
1998-09
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
 IEC 1998  Copyright - all rights reserved
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 the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: [phone] e-mail: [e-mail] IEC web site http: //www.iec.ch
Commission Electrotechnique Internationale
PRICE CODE
T
International Electrotechnical Commission
For price, see current catalogue

– 2 – 61162-2 © IEC:1998(E)
CONTENTS
Page
FOREWORD . 3

Clause
1 General. 4

1.1 Scope . 4

1.2 Normative references. 4

1.3 Definitions. 5
2 Manufacturer's documentation. 5
2.1 Standard documents . 5
2.2 Additional information. 5
3 Hardware specification . 5
3.1 Interconnecting wires . 5
3.2 Conductor definitions . 6
3.3 Electrical connection/shield requirements . 6
3.4 Connector . 6
3.5 Electrical signal characteristics. 6
4 Data transmission . 7
5 Data format protocol. 7
5.1 Characters . 7
5.2 Fields. 8
5.3 Sentences. 9
5.4 Error detection and handling. 12
6 Data content . 13
7 Applications . 13
8 Methods of testing and required test results. 13
8.1 Test preparation. 13
8.2 Test sequence . 13
8.3 Standard test signals. 13
8.4 Test of the interface . 13
Figure 1 – Talker/listener connections. 15

Figure 2 – Cables – Electrical shield requirements . 15
Figure 3 – Data transmission format . 15
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 . 16
Annex B (informative) Glossary. 24

61162-2 © IEC:1998(E) – 3 –
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 IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical reports or guides and they are accepted by the National Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61162-2 has been prepared by technical committee 80: Maritime
navigation and radiocommunication equipment and systems.
This part of IEC 61162 is based upon NMEA 0183, version 2.30, and it is the intention of IEC
and NMEA to maintain this commonality as far as possible.

The text of this standard is based on the following documents:
FDIS Report on voting
80/189/FDIS 80/206/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
Annexes A and B are for information only.
A bilingual version of this standard may be issued at a later date.

– 4 – 61162-2 © IEC:1998(E)
MARITIME NAVIGATION AND RADIOCOMMUNICATION

EQUIPMENT AND SYSTEMS – DIGITAL INTERFACES –

Part 2: Single talker and multiple listeners,

high-speed transmission
1 General
1.1 Scope
This part of IEC 61162 contains the requirements for data communication between maritime
electronic instruments, navigation and radiocommunication equipment when interconnected via
an appropriate interface.
This standard 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 may include any information as
specified by approved sentences or information coded according to the rules for proprietary
sentences. Typical messages may 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 standard 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, this standard should be used with caution in all
safety applications.
Annex A contains a list of relevant IMO resolutions and ITU recommendations to which this
standard applies.
1.2 Normative references
The following normative documents contain provisions which, through reference in this text,
constitute provisions of this part of IEC 61162. At the time of publication, the editions indicated
were valid. All normative documents are subject to revision, and parties to agreements based
on this part of IEC 61162 are encouraged to investigate the possibility of applying the most
recent editions of the normative documents indicated below. Members of IEC and ISO maintain
registers of currently valid International Standards.
IEC 60945:1996, Maritime navigation and radiocommunication equipment and systems –

General requirements, methods of testing and required test results
IEC 61162-1:1995, Maritime navigation and radiocommunication equipment and systems –
Digital interfaces – Part 1: Single talker and multiple listeners
ITU-T V.11:1996, Electrical characteristics for balanced double-current interchange circuits
operating at data signalling rates up to 10 Mbits/s
NMEA 0183 – Version 2.30:1998, National marine electronics association (USA) – Standard for
interfacing marine electronic navigational devices
EIA 485:1991, Electrical characteristics of generators and receivers for use in balanced digital
multipoint systems
61162-2 © IEC:1998(E) – 5 –
1.3 Definitions
Common terms are defined in the glossary of annex B. Where there is a conflict, terms shall be

interpreted, wherever possible, in accordance with the references in 1.2.

For the purposes of this part of IEC 61162, the following definitions apply.

talker
any device which sends data to other devices. The type of talker is identified by a two-

character mnemonic as listed in 6.2 (table 4) of IEC 61162-1.

listener
any device which receives data from another device
latency
time interval between an event and its resulting information, including time for processing,
transmission and/or reception
2 Manufacturer's documentation
2.1 Standard documents
Operator manuals or other appropriate literature provided for equipment that is intended to
meet the requirements of this standard shall contain as a minimum the following information:
a) identification of the A, B and common (C) signal lines;
b) the output drive capability as a talker;
c) a list of approved sentences, noting unused fields, proprietary sentences transmitted as a
talker, data latency and transmission interval for each sentence;
d) the load requirements as a listener;
e) a list of sentences and associated data fields that are required by, or are acceptable to, a
listener;
f) the current software and hardware revision if this is relevant to the interface;
g) an electrical description or schematic of the listener/talker input/output circuits citing actual
components and devices used, including connector type and part number;
h) the version number and date of update of the standard for which compliance is sought.
2.2 Additional information
As latency, filtering, error handling and data transmission interval can have a serious influence
on the performance of a system, the manufacturer shall give careful consideration to these

aspects. D
...

IEC 61162-2 ®
Edition 1.0 1998-09
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
Copyright © 1998 IEC, Geneva, Switzerland

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IEC 61162-2 ®
Edition 1.0 1998-09
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
PRICE CODE
INTERNATIONALE
CODE PRIX T
ICS 47.020.70 ISBN 978-2-83220-622-5

– 2 – 61162-2 © IEC:1998
CONTENTS
FOREWORD . 3

1 General . 4
1.1 Scope . 4
1.2 Normative references . 4
1.3 Definitions . 5
2 Manufacturer's documentation . 5
2.1 Standard documents . 5
2.2 Additional information . 5
3 Hardware specification . 5
3.1 Interconnecting wires . 5
3.2 Conductor definitions . 6
3.3 Electrical connection/shield requirements . 6
3.4 Connector . 6
3.5 Electrical signal characteristics . 6
4 Data transmission . 7
5 Data format protocol . 7
5.1 Characters. 7
5.2 Fields . 8
5.3 Sentences . 9
5.4 Error detection and handling . 12
6 Data content . 13
7 Applications . 13
8 Methods of testing and required test results . 13
8.1 Test preparation . 13
8.2 Test sequence . 13
8.3 Standard test signals . 13
8.4 Test of the interface . 13

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 . 16
Annex B (informative) Glossary . 24

Figure 1 – Talker/listener connections . 15
Figure 2 – Cables – Electrical shield requirements . 15
Figure 3 – Data transmission format . 15

Table A.1 – Navigation . 16
Table A.2 – Radiocommunications for the global maritime distress and safety system
(GMDSS) . 17

61162-2 © IEC:1998 – 3 –
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 IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical reports or guides and they are accepted by the National Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61162-2 has been prepared by technical committee 80: Maritime
navigation and radiocommunication equipment and systems.
This part of IEC 61162 is based upon NMEA 0183, version 2.30, and it is the intention of IEC
and NMEA to maintain this commonality as far as possible.
This bilingual version (2013-01) corresponds to the monolingual English version, published in
1998-09.
The text of this standard is based on the following documents:
FDIS Report on voting
80/189/FDIS 80/206/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
The French version of this standard has not been voted upon.
Annexes A and B are for information only.

– 4 – 61162-2 © IEC:1998
MARITIME NAVIGATION AND
RADIOCOMMUNICATION EQUIPMENT AND SYSTEMS –
DIGITAL INTERFACES –
Part 2: Single talker and multiple listeners,
high-speed transmission
1 General
1.1 Scope
This part of IEC 61162 contains the requirements for data communication between maritime
electronic instruments, navigation and radiocommunication equipment when interconnected via
an appropriate interface.
This standard 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 may include any information as
specified by approved sentences or information coded according to the rules for proprietary
sentences. Typical messages may 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 standard 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, this standard should be used with caution in
...