SIST EN 61993-1:2004
(Main)Maritime navigation and radiocommunication equipment and systems -- Part 1: Shipborne automatic transponder system installation using VHF digital selective calling (DSC) techniques - Operational and performance requirements, methods of testing and required test results
Maritime navigation and radiocommunication equipment and systems -- Part 1: Shipborne automatic transponder system installation using VHF digital selective calling (DSC) techniques - Operational and performance requirements, methods of testing and required test results
Specifies the performance requirements, technical characteristics, operational requirements, methods of testing and required test results for shipborne automatic transponder system installations using VHF digital selective calling (DSC) techniques.
Navigations- und Funkkommunikationsgeräte und -systeme für die Seeschiffahrt -- Teil 1: Installationen für ein automatisches Transpondersystem für Schiffe, das die Technik des digitalen Selektivrufs (DSC) auf UKW einsetzt - Betriebs- und Leistungsanforderungen, Prüfverfahren und geforderte Prüfergebnisse
Matériels et systèmes de navigation et de radiocommunication maritimes -- Partie 1: Installation de systèmes de répondeur automatique de bord de navires utilisant des techniques d'appel sélectif numérique en ondes métriques - Exigences d'exploitation et de fonctionnement, méthodes d'essai et résultats d'essai exigés
Définit les exigences de fontionnement, les caractéristiques techniques, les exigences d'exploitation, les méthodes d'essai et les résultats d'essai exigés pour les installations de systèmes de répondeur automatique de bord de navires utilisant des techniques d'appel sélectif numérique en ondes métriques.
Maritime navigation and radiocommunication equipment and systems - Part 1: Shipborne automatic transponder system installation using VHF digital selective calling (DSC) techniques - Operational and performance requirements, methods of testing and required test results (IEC 61993-1:1999)
General Information
Standards Content (Sample)
SLOVENSKI SIST EN 61993-1:2004
STANDARD
julij 2004
Maritime navigation and radiocommunication equipment and systems - Part 1:
Shipborne automatic transponder system installation using VHF digital selective
calling (DSC) techniques - Operational and performance requirements, methods of
testing and required test results (IEC 61993-1:1999)
ICS 47.020.70 Referenčna številka
SIST EN 61993-1:2004(en)
© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno
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INTERNATIONAL
IEC
STANDARD
61993-1
First edition
1999-04
Maritime navigation and radiocommunication
equipment and systems –
Part 1:
Shipborne automatic transponder system
installation using VHF digital selective
calling (DSC) techniques –
Operational and performance requirements,
methods of testing and required test results
Matériels et systèmes de navigation et
de radiocommunication maritimes –
Partie 1:
Installation de systèmes de répondeur automatique
de bord de navires utilisant des techniques d’appel sélectif
numérique en ondes métriques – Exigences d’exploitation
et de fonctionnement, méthodes d’essai et résultats
d’essai exigés
© IEC 1999 ⎯ 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: +41 22 919 0300 e-mail: inmail@iec.ch IEC web site http: //www.iec.ch
Commission Electrotechnique Internationale
PRICE CODE
W
International Electrotechnical Commission
For price, see current catalogue
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CONTENTS
Page
FOREWORD . 4
INTRODUCTION .5
Clause
1 Scope . 6
2 Normative references . 7
3 Definitions and abbreviations. 8
3.1 Definitions. 8
3.2 Abbreviations . 8
4 General requirements. 9
4.1 General. 9
4.2 Composition. 9
4.3 Design and construction. 9
4.4 Controls and indicators. 9
4.5 Interfacing. 10
4.6 Permissible warming-up period. 10
5 Performance requirements . 10
5.1 General. 10
5.2 Compatibility . 11
5.3 Identification . 11
6 Operational requirements . 11
6.1 Ship-shore identification. 11
6.2 Ship-ship identification . 12
7 Technical requirements . 12
7.1 Channel sensing . 12
7.2 Class of emission and modulation characteristics . 13
7.3 Frequency bands and channels . 13
7.4 Switching time. 13
7.5 Safety precautions . 13
7.6 Transmitter . 13
7.7 Receiver . 14
7.8 Antenna system . 14
7.9 Power supply . 14
7.10 System DSC facility. 14
8 Test conditions. 15
8.1 General. 15
8.2 Unspecified tests . 15
8.3 Test power source. 15
8.4 Normal test conditions. 15
8.5 Extreme test conditions . 16
8.6 Procedures for tests at extreme temperatures . 16
8.7 Test signals . 17
8.8 Measurement of bit error rate (BER). 17
8.9 Measurement uncertainty and interpretation of the measurement results . 18
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61993-1 © IEC(E):1999 – 3 –
9 Environmental tests. 18
9.1 Introduction. 18
9.2 Temperature tests. 18
9.3 Vibration . 19
9.4 Corrosion. 19
9.5 Rain. 19
10 Performance tests . 19
10.1 General. 19
10.2 Compatibility . 20
10.3 Identification . 20
11 Operational tests. 20
11.1 Ship-shore identification. 20
11.2 Ship-ship identification . 20
12 Technical tests.21
12.1 Sensing capability . 21
12.2 Switching time. 21
13 Transmitter tests . 22
13.1 Frequency error . 22
13.2 Carrier power . 22
13.3 Frequency deviation . 23
13.4 Sensitivity of the modulator . 23
13.5 Modulation index . 24
13.6 Adjacent channel power . 24
13.7 Conducted spurious emissions conveyed to the antenna. 25
13.8 Transient frequency behaviour of the transmitter . 25
14 Receiver tests .27
14.1 Calling sensitivity . 27
14.2 Dynamic range. 27
14.3 Co-channel rejection . 27
14.4 Adjacent channel selectivity. 28
14.5 Blocking immunity . 28
14.6 Intermodulation response . 29
14.7 Conducted spurious emissions into the antenna . 29
15 Other tests . 29
15.1 Antenna system . 29
15.2 Power supply . 29
15.3 Compass safe distance . 30
16 Safety precautions . 30
17 EMC emissions . 30
18 EMC immunity. 30
Annex A (informative) Relationship between bit error rate (BER) input and symbol error
rate (SER) output . 32
Annex B (normative) Power measuring receiver specification . 36
Annex C (informative) Description of the operation of the system . 38
Figures
1 Test set-up for measuring transient frequency behaviour. 30
2 Storage oscilloscope view t , t and t . 31
1 2 3
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INTERNATIONAL ELECTROTECHNICAL COMMISSION
–––––––––––
MARITIME NAVIGATION AND RADIOCOMMUNICATION EQUIPMENT
AND SYSTEMS –
Part 1: Shipborne automatic transponder system installation
using VHF digital selective calling (DSC) techniques –
Operational and performance requirements,
methods of testing and required test results
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 61993-1 has been prepared by IEC technical committee 80:
Maritime navigation and radiocommunication equipment and systems.
The text of this standard is based on the following documents:
FDIS Report on voting
80/212/FDIS 80/222/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.
Annex B is an integral part of the standard.
Annexes A and C are for information only.
A bilingual version of this standard may be issued at a later date.
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61993-1 © IEC(E):1999 – 5 –
INTRODUCTION
In 1995 the IMO instigated work on the development of performance standards for a shipborne
automatic identification system (AIS) using VHF digital selective calling (DSC) techniques.
These performance standards were developed into a draft resolution which was expected to be
adopted by the IMO Maritime Safety Committee. However, there were objections to this on the
grounds that some requirements for AIS were not met by the draft resolution.
The outcome has been that IMO has now developed further performance standards for a
“Universal AIS” as a resolution which was adopted by the IMO Maritime Safety Committee in
May 1998 as MSC. 74(69) annex 3.
During this period, some countries have gone ahead and implemented operational systems
based upon the original IMO draft performance standards for AIS. There is therefore a need for
a technical testing standard for such equipment.
At their plenary meeting in September 1997, technical committee 80 came to the following
decisions:
– a draft technical standard which had been prepared on the basis of the original IMO
performance standards would go ahead with the reference 61993-1, but would not directly
refer to any IMO resolution for AIS;
– work would commence at the earliest opportunity on preparing a technical standard for a
“Universal AIS” based rigorously upon the IMO resolution MSC.74(69) and a new
recommendation ITU-R M.1371. This standard would have the reference 61993-2.
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MARITIME NAVIGATION AND RADIOCOMMUNICATION EQUIPMENT
AND SYSTEMS –
Part 1: Shipborne automatic transponder system installation
using VHF digital selective calling (DSC) techniques –
Operational and performance requirements,
methods of testing and required test results
1 Scope
This part of IEC 61993 specifies the performance requirements, technical characteristics,
operational requirements, methods of testing and required test results for shipborne automatic
transponder system installations using VHF digital selective calling (DSC) techniques and is
associated with IEC 60945. When a requirement in this standard is different from IEC 60945,
the requirement in this standard shall take precedence.
The shipborne transponder installation is intended to assist in the efficient operation of ship-
reporting systems and vessel traffic services (VTS) by enabling operators to identify, poll and
automatically locate and track ships when they are approaching, entering and sailing within the
limits of a ship-reporting system.
The system may also be used for the identification of ships by a ship and ships by aircraft. A
description of the system is given in annex C.
This standard
– incorporates the technical characteristics included in ITU-R Recommendation M.825 for
transponder systems using DSC and the technical characteristics included in ITU-R
Recommendation M.489 for VHF radiotelephone equipment;
– incorporates the technical characteristics of DSC equipment and the operational
procedures for its use contained in Recommendations ITU-R M.493 and ITU-R M.541;
– incorporates applicable parts of the performance standards of IMO Resolution A.803 for
shipborne VHF radio installations;
– takes account of IMO Resolution A.694 for general requirements; and
– conforms with the International Telecommunication Union (ITU) Radio Regulations where
applicable.
This standard for a transponder system is not intended to meet the requirements for a
universal automatic identification system (AIS), as detailed in IMO Resolution MSC.74(69)
annex 3.
NOTE – All text in this standard whose meaning complies with that in the normative references, namely IMO
Resolution A.803(19) and ITU-R Recommendations M.825, M.489, M.493 and M.541 is followed by a reference to
the source (number of IMO Resolution or ITU-R Recommendation and paragraph number) in brackets.
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61993-1 © IEC(E):1999 – 7 –
2 Normative references
The following normative documents contain provisions which, through reference in this text,
constitute provisions of this part of IEC 61993. For dated references, subsequent amendments
to, or revisions of, any of these publications do not apply. However parties to agreements
based on this part of IEC 61993 are encouraged to investigate the possibility of applying the
most recent editions of the normative documents indicated below. For undated references, the
latest edition of the normative documents referred to applies. 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 61097-3:1994, 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
IEC 61097-7:1996, Global maritime distress and safety system (GMDSS) – Part 7: Shipborne
VHF radiotelephone transmitter and receiver – Operational and performance requirements,
methods of testing and required test results
IEC 61162 (all parts), Maritime navigation and radiocommunicaation equipment and systems –
Digital interfaces
IMO International Convention for Safety of Life at Sea (SOLAS) 1974, as amended
IMO Resolution A.694:1991, General requirements for shipborne radio equipment forming part
of the global maritime distress and safety system (GMDSS) and for electronic navigational aids
IMO Resolution A.803:1995, Performance standards for shipborne VHF radio installations
capable of voice communication and digital selective calling
IMO MSC.74(69):1998, annex 3 – Performance standards for an Universal shipborne automatic
identification system (AIS)
ITU Radio Regulations:1997
ITU-R Recommendation M.489-2:1995, Technical characteristics of VHF radiotelephone
equipment operating in the maritime mobile service in channels spaced by 25 kHz
ITU-R Recommendation M.493-9:1997, Digital selective-calling system for use in the maritime
mobile service
ITU-R Recommendation M.541-8:1997, Operational procedures for the use of digital selective
calling (DSC) equipment in the maritime mobile service
ITU-R Recommendation M.825-2:1997, Characteristics of a transponder system using digital
selective-calling techniques for use with vessel traffic services and ship-to-ship identification
ITU-R Recommendation M.1371:1998, Technical characteristics for a universal shipborne
automatic identification system using time division multiple access in the VHF maritime mobile
band
ITU-T Recommendation V.11:1996, Electrical characteristics for balanced double-current
interchange circuits operating at data signalling rates up to 10 Mbit/s
ITU-T Recommendation V.24:1996, List of definitions for interchange circuits between data
terminal equipment (DTE) and data circuit-terminating equipment (DCE)
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ITU-T Recommendation V.28:1993, Electrical characteristics for unbalanced double-current
interchange circuits
3 Definitions and abbreviations
3.1 Definitions
For the purpose of this standard, the following definitions apply.
3.1.1
status
navigational status of the ship as expressed by the second digit 1-7 of the two-digit symbols to
indicate other ships (table 3 of Recommendation ITU-R M.825)
3.1.2
performance check
quick test under normal test conditions of the transmitter frequency error to 13.1, the transmitter
output power to 13.2 (high power only) and the receiver calling sensitivity to 14.1, with standard
test signal number 2 applied at a level of +12 dBµV. For results required, see 9.1.2
3.1.3
sensor
device which provides information to the system such as position, course and speed
3.2 Abbreviations
BER Bit error rate
DCE Data circuit-terminating equipment
DSC Digital selective calling
DTE Data terminal equipment
ECDIS Electronic chart display and information system
EMC Electromagnetic compatibility
e.m.f. Electromotive force
EUT Equipment under test
GMDSS Global maritime distress and safety system
GPS Global positioning system
IEC International Electrotechnical Commission
IMO International Maritime Organization
ITU International Telecommunication Union
ITU-R ITU Radiocommunication sector (formerly CCIR)
ITU-T ITU Standardization sector (formerly CCITT)
MMSI Maritime mobile service identity
p.t.t. press-to-transmit
r.m.s. root-mean-square
SOLAS Safety of Life at Sea (International convention for the)
UTC Universal time co-ordinated
VHF Very high frequency
VTS Vessel traffic services
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61993-1 © IEC(E):1999 – 9 –
4 General requirements
4.1 General
4.1.1 Requirements contained in clause 4 cannot be verified by repeatable measurements.
The manufacturer shall declare that compliance to these requirements is achieved and shall
provide relevant documentation. The declaration(s), documentation and, when necessary, the
equipment shall be checked.
The system shall have a high level of availability, shall enable operators to obtain
4.1.2
information from the ship automatically, whenever practicable, and require a minimum of
involvement of ship's personnel, thus reducing the burden of communication on board ships.
4.1.3 The system installation, in addition to meeting the requirements of the Radio
1)
Regulations, the relevant ITU-R recommendations and the general requirements set out in
IMO A.694, as detailed in IEC 60945, shall comply with the following requirements and the
requirements contained in clauses 5 and 6 of this standard.
4.2 Composition
The installation shall comprise of at least
4.2.1
– a transmitter/receiver including antenna;
– a digital selective calling facility;
– a dedicated DSC watchkeeping facility to maintain watch on the designated calling
frequency except during periods when the installation is required to operate on working
channels in accordance with instructions from shore-based stations;
– an electronic position-fixing system capable of providing horizontal accuracy of 100 m (95 %);
– means to input and receive information;
– means for the automatic change to a working channel on request of the shore-based
interrogating station.
4.2.2 The manufacturer shall declare the composition of the equipment and also the relevant
category to IEC 60945 for each unit.
4.3 Design and construction
The installation shall operate continuously while underway or at anchor. The equipment
4.3.1
shall be designed for continuous operation.
4.3.2 The system functions may be performed by separate units appropriately interconnected
or be integrated with a radio transmitter and/or receiver.
NOTE – "Integrated" means that the system function is physically integrated into a radio transmitter and/or receiver
so that the system functions can only be tested by RF measurements.
4.4 Controls and indicators
4.4.1 The installation shall be provided with visual indication to show
– the equipment is switched on;
– the transponder function is disabled;
– the equipment is being interrogated; and
– the equipment is transmitting;
– loss of external data.
–––––––
1)
Recommendations ITU-R M.825, M.493, M.541
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4.5 Interfacing
4.5.1 To enable a user display of information for example at a radar or ECDIS, the system
shall be provided with a serial interface conforming to IEC 61162.
4.5.2 Interfaces for external sensors providing data for the system shall conform to
IEC 61162.
4.5.3 As a minimum, the system shall be capable of operating with the sentences GGA, GLL,
VBW, VTG, DSI, and DSR of IEC 61162.
4.5.4 When the installation comprises an external watch receiver, input terminals for AF, or
alternatively DSC signals at logic level, the interfaces shall be as follows.
4.5.4.1 AF terminals for DSC signals shall have input and output impedance of 600 Ω,
symmetrical and free of earth, with a closed-circuit level adjustable to 0,775 V (r.m.s.) ± 10 dB
for connection to AF terminals of external radio equipment.
4.5.4.2 Alternatively, terminals for DSC signals at logic levels shall have the electrical
characteristics compatible with Recommendation ITU-T V.11. The B-state shall be the logic "0",
and the Y-state shall be the logic "1".
4.5.4.3 Additionally, terminals for DSC signals may be provided with characteristics as
defined in ITU-T Recommendations V.24 and V.28.
4.6 Permissible warming-up period
The installation shall be operational within 1 min of switching on.
NOTE – Sensors used with the system shall meet the requirements of their individual product standards (for
example, IEC 61108-1 for GPS which permits 30 min to operation when there is no valid almanac data available).
5 Performance requirements
5.1 General
5.1.1 The system shall provide for calls of the category safety using DSC. (825/6.1)
5.1.2 Means shall be provided to automatically record all periods when the installation is non-
functioning. It shall not be possible for the user to alter any information recorded by this device.
5.1.3 The last 10 times when the equipment is non-functioning for more than 15 min shall be
recorded in UTC time and duration in a non-volatile memory. Means shall be provided to
recover this data.
5.1.4 The installation shall be capable of receiving and processing all calls transmitted by an
interrogating station.
5.1.5 The installation may not be required to process DSC type calls which are not AIS calls;
however, such calls shall not affect correct system operation.
5.1.6 The installation shall be capable of operating on single-frequency channels or on single-
or two-frequency channels.
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61993-1 © IEC(E):1999 – 11 –
5.1.7 The installation shall be capable of automatically
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