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IEC 61097-8 : 1.0

IEC 61097-8 : 1.0

GLOBAL MARITIME DISTRESS AND SAFETY SYSTEM (GMDSS) - PART 8: SHIPBORNE WATCHKEEPING RECEIVERS FOR THE RECEPTION OF DIGITAL SELECTIVE CALLING (DSC) IN THE MARITIME MF, MF/HF AND VHF BANDS - OPERATIONAL AND PERFORMANCE REQUIREMENTS, METHODS OF TESTING AND REQUIRED TEST RESULTS

International Electrotechnical Committee

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Table of Contents

FOREWORD<br>1 Scope<br>2 Normative references<br>3 Definitions and abbreviations<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.1 Definitions<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.2 Abbreviations<br>4 General and operational requirements<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.1 General<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.2 Construction<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.3 Controls and indicators<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.4 Software<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.5 Memory<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.6 Interfaces<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.7 Marking and identification<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.8 Instructions<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.9 Warming-up period<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.10 Safety precautions<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4.11 Compass safe distance<br>5 Technical requirements<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.1 Durability and resistance to environmental <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;conditions<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.2 Protection of the antenna input circuit<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.3 Frequency bands and channels<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.4 Mode of reception<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.5 Scanning receivers<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.6 Calling sensitivity<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.7 Adjacent channel selectivity<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.8 Co-channel rejection<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.9 Intermodulation response<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.10 Interference rejection, spurious response and <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;blocking immunity<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.11 Dynamic range<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.12 Conducted spurious emissions into the antenna<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.13 Frequency stability<br>6 General test conditions<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.1 General<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.2 Test power source<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.3 Normal test conditions<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.4 Extreme test conditions<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.5 Application of test signals to the receiver<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.6 Choice of testing frequencies<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.7 Test signals<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.8 Measurement of bit error rate (BER)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.9 Measurement uncertainty and interpretation of <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;the measuring results<br>7 Environmental tests<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.1 Procedure<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.2 Performance check<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.3 Vibration tests<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.4 Temperature tests<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.5 Corrosion test<br>8 MF/HF watchkeeping receiver<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.1 Calling sensitivity<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.2 Adjacent channel selectivity<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.3 Co-channel rejection<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.4 RF intermodulation response<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.5 Spurious response rejection<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.6 Dynamic range<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.7 Conducted spurious emissions into the antenna<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.8 Protection of receiver antenna input circuits<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.9 Stop/start<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.10 Stop/start of scanning efficiency<br>9 VHF watchkeeping receiver<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9.1 Calling sensitivity<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9.2 Adjacent channel selectivity<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9.3 Co-channel rejection<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9.4 Intermodulation response<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9.5 Spurious response and blocking immunity<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9.6 Dynamic range<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9.7 Conducted spurious emissions into the antenna<br>10 EMC<br>11 EMI<br>Annex A - Relationship between bit error rate (BER) input <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;and symbol error rate (SER) output<br>Annex B - Use of FSK demodulators for testing DSC <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;watchkeeping receivers<br>Annex C - Bibliography

Abstract

Gives the minimum requirements for shipborne receivers that are meant to be connected to an external installation, including a decoder for digital selective calling (DSC), and used as receivers for watchkeeping on DSC channels on board ships operating in the maritime mobile MF, MF/HF and VHF bands.

General Product Information

Document Type Standard
Status Current
Publisher International Electrotechnical Committee
Committee TC 80

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