EN 61993-1:1999

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
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

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

– 2 – 61993-1 © IEC(E):1999
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

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
– 4 – 61993-1 © IEC(E):1999
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 latt
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