IEC 61162-1:2000

Maritime navigation and radiocommunication equipment and systems - Digital interfaces - Part 1: Single talker and multiple listeners

Contains the requirements for data communication between maritime electronic instruments, navigation and radiocommunication equipment when interconnected via an appropriate system. Is intended to support one-way serial data transmission from a single talker to one or more listeners. Is closely aligned with NMEA 0183 version 2.30. Reference is made to IEC 61162-2 for applications with higher transmission rates.

General Information

• Status: Published
• Publication Date: 06-Jul-2000
• ICS: 33.060.01 - Radiocommunications in general
• 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: DELPUB - Deleted Publication
• Completion Date: 11-Apr-2007

Relations

• Revised: IEC 61162-1:2007 - Maritime navigation and radiocommunication equipment and systems - Digital interfaces - Part 1: Single talker and multiple listeners
• Effective Date: 05-Sep-2023

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD
61162-1
Second edition
2000-07
Maritime navigation and radiocommunication
equipment and systems –
Digital interfaces –
Part 1:
Single talker and multiple listeners
Matériels et systèmes de navigation et
de radiocommunication maritimes –
Interfaces numériques –
Partie 1:
Emetteur unique et récepteurs multiples

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
Electrotechnical 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
61162-1
Second edition
2000-07
Maritime navigation and radiocommunication
equipment and systems –
Digital interfaces –
Part 1:
Single talker and multiple listeners
Matériels et systèmes de navigation et
de radiocommunication maritimes –
Interfaces numériques –
Partie 1:
Emetteur unique et récepteurs multiples

 IEC 2000  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
XC
International Electrotechnical Commission
For price, see current catalogue

– 2 – 61162-1 © IEC:2000(E)
CONTENTS
Page
FOREWORD . 3

INTRODUCTION .5

Clause
1 General. 6

1.1 Scope . 6
1.2 Normative references. 6
1.3 Definitions. 7
2 Manufacturer's documentation. 7
3 Hardware specification . 8
3.1 Interconnecting wire . 8
3.2 Conductor definitions . 8
3.3 Electrical connections/shield requirements . 8
3.4 Connector . 8
3.5 Electrical signal characteristics. 8
4 Data transmission . 9
5 Data format protocol. 10
5.1 Characters . 10
5.2 Fields. 11
5.3 Sentences. 12
6 Data content . 16
6.1 Character definitions . 16
6.2 Field definitions. 19
6.3 Approved sentences. 22
7 Applications .55
7.1 Example sentence. 55
7.2 Examples of receiver diagrams . 58
Annex A (informative) Minimum required sentences for equipment with digital interfaces
conforming to IMO resolutions and ITU recommendations and their association with
the relevant IEC and ISO standards . 59

Annex B (informative) Glossary . 63
Annex C (normative) Guidelines for methods of testing and required test results . 70
Bibliography . 76

61162-1 © IEC:2000(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION

___________
MARITIME NAVIGATION AND RADIOCOMMUNICATION

EQUIPMENT AND SYSTEMS –
DIGITAL INTERFACES –
Part 1: Single talker and multiple listeners

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 specifications, 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 61162-1 has been prepared by IEC technical committee 80:
Maritime navigation and radiocommunication equipment and systems.
This second edition cancels and replaces the first edition published in 1995, and constitutes a
technical revision. This part of IEC 61162 is closely aligned with NMEA 0183 version 2.30.

The text of this standard is based upon the following documents:
FDIS Report on voting
80/240/FDIS 80/264/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.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 3.
Annex C forms an integral part of this standard.
Annexes A and B are for information only.

– 4 – 61162-1 © IEC:2000(E)
The committee has decided that the contents of this publication will remain unchanged until

2004. At this date, the publication will be

• reconfirmed;
• withdrawn;
• replaced by a revised edition, or

• amended.
61162-1 © IEC:2000(E) – 5 –
INTRODUCTION
IEC TC 80 interface standards are developed with input from manufacturers, private and

government organisations and equipment operators. The information contained in this standard

is intended to meet the needs of users at the time of publication, but users must recognise that

as applications and technology change, interface standards must change as well. Users of this

document are advised to immediately inform the IEC of any perceived inadequacies in this

standard.
The following notes provide the background to changes introduced to the first edition of this

standard.
NOTE 1 The sentences in IEC 61162-1:1995-11 which were indicated as “(to be further developed)” have now
been developed. The sentences involved are:
DSC – Digital selective calling (DSC) (see also DSE, DSI and DSR)
DTM – Datum reference
ASD – Autopilot system data has been deleted and renamed in line with IMO definitions – see HTC and HTD below.
NOTE 2 New sentences have been added:
ACK Acknowledge alarm
ALR Set alarm state
DSE Expanded digital selective calling
DSI DSC transponder initiate
DSR DSC transponder response
GNS GNSS fix data
HMS Heading monitor set
HMR Heading monitor receive
HTC Heading/track control command
HTD Heading/track control data
MLA GLONASS almanac data
MWD Wind direction and speed
TLB Target label
TXT Text transmission
NOTE 3 The following sentences have been deleted, as the systems referred to are no longer in operation:
GXA – TRANSIT position, OLN – OMEGA lane numbers, TRF – TRANSIT fix data.
NOTE 4 Detailed modifications have been made to the following sentences:
FSI, GBS, GGA, GRS, MSK, MSS, OSD, RMA, RMB, RMC, SFI, TLL, TTM, VBW, XDR and ZDA.
Details of the changes are given in the relevant pages.
NOTE 5 A mode indicator character field “a” has been added as a new last data field to specific sentences,
namely APB, BWC, BWR, GLL, RMA, RMB, RMC, VTG, WCV and XTE.
The mode indicator character “a” has been defined to include the following when used in the designated sentences:
A = Autonomous mode
D = Differential mode
E = Estimated (dead reckoning) mode
M = Manual input mode
S = Simulator mode
N = Data not valid
NOTE 6 A note has been added to sentences APB, GLL, RMA, RMB, RMC and XTE (which contain a status field
“A”) as follows:
“Note: the mode indicator field supplements the status field (field n), the status field shall be set to V = Invalid for
all values of mode indicator except for A = Autonomous and D = Differential.”
NOTE 7 A note has been added to all appropriate sentences to state that “the quality indicator, mode indicator,
operating mode and status fields shall not be null fields.”

– 6 – 61162-1 © IEC:2000(E)
MARITIME NAVIGATION AND RADIOCOMMUNICATION

EQUIPMENT AND SYSTEMS –
DIGITAL INTERFACES –
Part 1: Single talker and multiple listeners

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 system.
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 information such as
position, speed, depth, frequency allocation, etc. Typical messages may be from about 20 to a
maximum of 79 characters in length and generally require transmission no more rapidly than
one message per second.
The electrical definitions in this standard are not intended to accommodate high-bandwidth
applications such as radar or video imagery, or intensive database or file transfer applications.
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.
For applications where a faster transmission rate is necessary, reference should be made to
IEC 61162-2.
Annex A contains a list of relevant International Maritime Organization (IMO) resolutions and
International Telecommunication Union (ITU) recommendations to which this standard applies.
1.2 Normative references
The following normative documents contain provisions which, through r
...