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IEC 61097-4
Edition 3.0 2012-05
INTERNATIONAL
STANDARD
Global maritime distress and safety system (GMDSS) –
Part 4: Inmarsat-C ship earth station and Inmarsat enhanced group call (EGC)
equipment – Operational and performance requirements, methods of testing
and required test results
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IEC 61097-4
Edition 3.0 2012-05
INTERNATIONAL
STANDARD
Global maritime distress and safety system (GMDSS) –
Part 4: Inmarsat-C ship earth station and Inmarsat enhanced group call (EGC)
equipment – Operational and performance requirements, methods of testing
and required test results
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
U
ICS 47.020.70 ISBN 978-2-83220-108-4
– 2 – 61097-4 © IEC:2012(E)
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Performance requirements . 7
3.1 Overview . 7
3.2 Non-operational requirements . 8
3.2.1 General . 8
3.2.2 Warning of radiation hazard . 8
3.2.3 Power supply changeover . 8
3.3 Operational requirements for ship earth stations . 8
3.3.1 Capabilities . 8
3.3.2 Ship station identity . 8
3.3.3 Distress alerting . 8
3.3.4 Position updating . 9
3.4 Operational requirements for EGC receivers . 9
3.4.1 Capabilities . 9
3.4.2 General . 10
3.4.3 Position and area code updating . 10
3.4.4 Indication of receipt of priority message . 10
3.4.5 Indication of tuning and synchronisation . 10
3.4.6 Printing selection . 11
3.4.7 Printing device . 11
3.5 Performance related requirements from IEC 60945 . 11
3.6 Other requirements . 11
3.7 Long-range identification and tracking . 12
3.7.1 General . 12
3.7.2 Capabilities . 12
3.7.3 Functionality . 13
3.7.4 Communication system . 14
4 Technical characteristics . 14
4.1 Overview . 14
4.2 Environmental and electromagnetic compatibility requirement . 14
4.3 Radiated spurious emissions . 15
5 Methods of testing and required test results . 15
5.1 Overview . 15
5.1.1 General . 15
5.1.2 Performance requirements . 15
5.1.3 Technical characteristics . 16
5.2 Tests of non-operational requirements . 16
5.3 Tests of operational requirements for ship earth stations . 16
5.3.1 Capabilities . 16
5.3.2 Ship station identity . 16
5.3.3 Distress alerting . 16
5.3.4 Position updating . 16
5.4 Tests of operational requirements for EGC receivers . 17
61097-4 © IEC:2012(E) – 3 –
5.4.1 Capabilities . 17
5.4.2 General . 17
5.4.3 Position and area code updating . 17
5.4.4 Indication of receipt of priority message . 17
5.4.5 Indication of tuning and synchronisation . 17
5.4.6 Printing selection . 18
5.4.7 Printing device . 18
5.5 Tests of performance related requirements from IEC 60945 . 18
5.6 Tests of other requirements . 18
5.7 Long-range identification and tracking . 18
5.7.1 General . 18
5.7.2 Capabilities . 18
5.7.3 Functionality . 19
5.7.4 Communication system . 19
5.8 Tests of technical characteristics . 20
5.8.1 Inmarsat tests . 20
5.8.2 Tests for environmental and electromagnetic compatibility . 20
Annex A (normative) Requirements relating to installation . 21
Annex B (normative) Radiated unwanted emissions . 22
Annex C (informative) Inmarsat RTP schedule of tests. 25
Bibliography . 29
Table 1 – Data to be transmitted from the shipborne equipment . 14
Table 2 – Environmental conditions . 15
Table B.1 – Limits of unwanted emissions up to 1 000 MHz . 22
Table B.2 – Limits of unwanted emissions above 1 000 MHz . 23
Table B.3 – Limits of unwanted emission within the operating band with carrier-on . 24
Table C.1 – Phase I Inmarsat-C schedule of tests . 25
Table C.2 – Phase I EGC receiver schedule of tests . 27
Table C.3 – Phase II schedule of tests . 28
– 4 – 61097-4 © IEC:2012(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
GLOBAL MARITIME DISTRESS
AND SAFETY SYSTEM (GMDSS) –
Part 4: Inmarsat-C ship earth station and
Inmarsat enhanced group call (EGC) equipment –
Operational and performance requirements,
methods of testing and required test results
FOREWORD
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