IEC 61097-3:2017
(Main)Global maritime distress and safety system (GMDSS) - Part 3: Digital selective calling (DSC) equipment - Operational and performance requirements, methods of testing and required test results
Global maritime distress and safety system (GMDSS) - Part 3: Digital selective calling (DSC) equipment - Operational and performance requirements, methods of testing and required test results
IEC 61097-3:2017 specifies the performance requirements, technical characteristics, operational requirements and methods of testing of shipborne DSC equipment for use with MF, MF/HF and VHF installations in the GMDSS, including those required by Chapter IV of the 1974 International Convention for Safety of Life at Sea (SOLAS) as amended, and is associated with IEC 60945 (Shipborne radio equipment forming part of the global maritime distress and safety system and marine navigational equipment).
This document incorporates applicable parts of the performance standards of IMO Resolutions A.803(19), A.804(19) and A.806(19) (DSC facilities for VHF, MF and MF/HF radio installations), IMO MSC/Circ.862 (describing the operation of the distress button), the provisions of the ITU Radio Regulations, the technical characteristics of DSC equipment and the operational procedures for its use contained in Recommendations ITU-R M.493, M.541, M.689, M.821 and M.1082, and takes into account the general requirements contained in IMO Resolution A.694(17).
This edition includes the following significant technical changes with respect to the previous edition:
a) changes in the operation of DSC which have been developed by IMO and ITU since the first edition was published;
b) compliance with bridge alert management (BAM);
c) optional addition of remote operation of the DSC functionality. This facility can also used for type approval testing of the performance of the DSC equipment;
d) incorporation of the radio frequency test methods for MF, MF/HF and VHF transceivers and watch receivers for convenience of testing.
General Information
Buy Standard
Standards Content (Sample)
IEC 61097-3 ®
Edition 2.0 2017-10
INTERNATIONAL
STANDARD
Global maritime distress and safety system (GMDSS) –
Part 3: Digital selective calling (DSC) equipment – Operational and performance
requirements, methods of testing and required testing results
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 Central Office Tel.: +41 22 919 02 11
3, rue de Varembé Fax: +41 22 919 03 00
CH-1211 Geneva 20 info@iec.ch
Switzerland www.iec.ch
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 corrigenda or an amendment might have been published.
IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing 20 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 16 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.
IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a 65 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and
CISPR.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre - webstore.iec.ch/csc
details all new publications released. Available online and If you wish to give us your feedback on this publication or
also once a month by email. need further assistance, please contact the Customer Service
Centre: csc@iec.ch.
IEC 61097-3 ®
Edition 2.0 2017-10
INTERNATIONAL
STANDARD
Global maritime distress and safety system (GMDSS) –
Part 3: Digital selective calling (DSC) equipment – Operational and performance
requirements, methods of testing and required testing results
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.060.20; 47.020.70 ISBN 978-2-8322-4901-7
– 2 – IEC 61097-3:2017 © IEC 2017
CONTENTS
FOREWORD . 10
1 Scope . 12
2 Normative references . 12
3 Terms, definitions and abbreviated terms . 14
3.1 Terms and definitions . 14
3.2 Abbreviated terms . 17
4 Performance requirements. 18
4.1 Object . 18
4.2 Test requirements . 18
4.2.1 General . 18
4.2.2 Test site . 18
4.2.3 Environment tests . 18
4.2.4 Environmental test procedure . 19
4.2.5 Performance checks . 19
4.2.6 Normal test conditions . 21
4.2.7 Extreme test conditions . 21
4.2.8 Unspecified test conditions . 22
4.2.9 General conditions of measurement . 22
4.2.10 Artificial antennas . 22
4.2.11 Standard test signals . 23
4.2.12 Measurement uncertainty. 24
4.2.13 Reference bandwidths for spurious measurements . 25
4.2.14 Interpretation of measurement results . 25
4.2.15 Testing method terminology . 26
4.3 Functional requirements . 26
4.3.1 Display of information . 26
4.3.2 User interface . 26
4.3.3 Categories of calls . 26
4.3.4 General purpose equipment characteristics . 27
4.3.5 Construction . 27
4.3.6 Memory . 29
4.3.7 Warm-up period . 30
4.3.8 Protection of the antenna input circuit . 30
4.3.9 Protection of the transmitter . 30
4.3.10 Antenna static protection . 31
4.3.11 Safety precautions . 31
4.3.12 Compass safe distance . 31
4.3.13 Audio interface . 31
4.3.14 Activation of transmitter and maximum transmission time . 32
4.3.15 Data interface . 32
4.4 Operational requirements . 36
4.4.1 Basic requirements . 36
4.4.2 Additional requirements . 39
4.4.3 Distress alerts . 41
4.4.4 Other calls . 42
4.4.5 Self-identification . 44
4.5 Scanning efficiency . 45
4.5.1 Requirements . 45
4.5.2 Method of test and required results . 45
4.6 Watch and scanning facilities . 45
4.6.1 Requirements . 45
4.6.2 Method of test and required results . 46
4.7 Bridge alert management (BAM) . 47
4.7.1 Classification of BAM alerts . 47
4.7.2 Alert management . 48
4.8 Alert source identification and reporting in ALF sentence . 49
4.8.1 General requirements . 49
4.8.2 Receipt of distress or urgency call . 50
4.8.3 Receipt of calls other than distress or urgency . 52
4.8.4 No position data received by equipment . 53
4.9 Software and firmware maintenance . 55
4.9.1 Requirements . 55
4.9.2 Methods of testing and required test results. 55
5 Technical characteristics . 56
5.1 General . 56
5.1.1 Frequency . 56
5.1.2 Calling sensitivity . 57
5.1.3 Nominal modulation rate . 57
5.1.4 Residual modulation . 57
5.2 Technical format of a call sequence . 57
5.2.1 Requirements . 57
5.2.2 Method of test and required results . 58
5.3 Expansion sequence . 58
5.3.1 Requirements . 58
5.3.2 Methods of test and required results . 58
5.4 Equipment for the automatic/semi-automatic service . 58
5.4.1 Requirements . 58
5.4.2 Methods of test and required results . 59
Annex A (informative) Digital interface sentence to parameter group number
equivalence . 60
Annex B (informative) DSC remote control communication . 61
B.1 General . 61
B.2 Use of AUC . 61
B.3 Use of AUQ. 61
B.4 Use of AUS . 61
B.5 Use of CUL . 62
B.6 Use of OCC . 62
B.7 Use of EPV . 62
B.8 Methods of testing and required results . 63
B.8.1 General . 63
B.8.2 Standby information test . 63
B.8.3 Creating sending distress automated procedure test . 64
B.8.4 Receiving distress automated procedure test . 65
B.8.5 Create sending non-distress automated procedure test .
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.