IEC 61993-2:2012

IEC 61993-2


®


Edition 2.0 2012-10



INTERNATIONAL



STANDARD






Maritime navigation and radiocommunication equipment and systems –
Automatic identification systems (AIS)
Part 2: Class A shipborne equipment of the automatic identification system (AIS) –
Operational and performance requirements, methods of test and required test
results


IEC 61993-2:2012(E)

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IEC 61993-2



®



Edition 2.0 2012-10







INTERNATIONAL





STANDARD






















Maritime navigation and radiocommunication equipment and systems –

Automatic identification systems (AIS)

Part 2: Class A shipborne equipment of the automatic identification system (AIS) –


Operational and performance requirements, methods of test and required test

results
























INTERNATIONAL

ELECTROTECHNICAL

COMMISSION

PRICE CODE
XF


ICS 47.020.70 ISBN 978-2-83220-416-0



  Warning! Make sure that you obtained this publication from an authorized distributor.


® Registered trademark of the International Electrotechnical Commission

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– 2 – 61993-2 © IEC:2012(E)



CONTENTS

FOREWORD . 9


INTRODUCTION . 11

1 Scope . 12

2 Normative references . 12


3 Abbreviations . 13

4 General requirements . 14

4.1 General . 14

4.1.1 Overview . 14
4.1.2 General requirements . 14
4.1.3 Capabilities of the AIS . 15
4.1.4 Additional requirements . 15
4.1.5 Transmitter shutdown procedure. 15
4.1.6 Quality assurance . 15
4.2 Modes of operation . 15
4.3 Manuals . 15
4.4 Marking and identification . 16
5 Other requirements. 16
5.1 Environmental, power supply, special purpose and safety requirements . 16
5.2 Display of information . 16
6 Performance requirements . 16
6.1 Composition . 16
6.2 Time and position . 17
6.2.1 Source for UTC . 17
6.2.2 Source for AIS position reporting . 17
6.3 User interface . 17
6.4 Identification. 18
6.5 Information . 18
6.5.1 Information provided by the AIS . 18
6.5.2 Information reporting intervals . 19
6.5.3 Ship reporting capacity . 19
6.6 Event log . 20
6.7 Permissible initialization period . 20

6.8 Power supply . 20
6.9 Technical characteristics . 20
6.10 Alarms and indications, fall-back arrangements . 20
6.10.1 Built-in test equipment . 20
6.10.2 Alarm messages . 21
6.10.3 Status messages . 23
6.11 Display, input and output . 26
6.11.1 Minimum keyboard and display (MKD) . 26
6.11.2 Communication test . 28
6.11.3 Alarms and status information . 29
6.11.4 Data protection . 29
6.11.5 Distance calculation . 29
6.12 Protection from invalid controls . 30
7 Technical requirements . 30

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61993-2 © IEC:2012(E) – 3 –


7.1 General . 30

7.2 Physical layer . 30

7.2.1 General . 31

7.2.2 Transmitter parameters . 31

7.2.3 Receiver parameters . 32

7.3 Link layer . 32

7.3.1 General . 32

7.3.2 Link sublayer 1: Medium Access Control (MAC) . 33

7.3.3 Link sublayer 2: Data Link Service (DLS) . 33

7.3.4 Link sublayer 3 – Link Management Entity (LME) . 33

7.4 Network layer . 35
7.4.1 General . 35
7.4.2 Management of regional operating settings . 35
7.5 Transport layer . 37
7.6 Presentation interface . 37
7.6.1 General . 37
7.6.2 Automatic input of sensor data . 38
7.6.3 High speed input/output ports . 38
7.6.4 Long-range communication ports . 41
7.6.5 BIIT alarm output . 43
8 Long-range applications . 43
8.1 General . 43
8.2 Long-range application by two-way interface . 43
8.2.1 General . 43
8.2.2 Interrogations and responses . 44
8.2.3 Manual and automatic response . 44
8.2.4 Data formats and contents . 44
8.2.5 Addressing AIS-units . 44
8.3 Long-range application by broadcast . 45
9 Test conditions . 45
9.1 Normal and extreme test conditions. 45
9.1.1 Normal test conditions . 45
9.1.2 Extreme test conditions . 45
9.2 Standard test environment. 46
9.3 Additional test arrangements . 46

9.3.1 Arrangements for test signals applied to the receiver input . 46
9.3.2 Encoder for receiver measurements . 46
9.3.3 Waiver for receivers . 46
9.3.4 Impedance. 47
9.3.5 Artificial antenna (dummy load) . 47
9.3.6 Facilities for access . 47
9.3.7 Modes of operation of the transmitter . 47
9.4 Common test conditions for protection from invalid controls . 47
9.5 Measurement uncertainties . 47
10 Test signals . 48
10.1 Standard test signal number 1 (DSC) . 48
10.2 Standard test signal number 2 (TDMA) . 48
10.3 Standard test signal number 3 (TDMA) . 48
10.4 Standard test signal number 4 (PRBS) . 48

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10.5 Standard test signal number 5 (PRBS) . 48

11 Power supply, special purpose and safety tests . 49


12 Environmental tests . 49

13 EMC tests. 50

14 Operational tests . 50

14.1 Identification and operating modes . 50


14.1.1 Autonomous mode . 50

14.1.2 Assigned mode . 51

14.1.3 Polled mode . 51

14.1.4 Addressed operation. 52
14.1.5 Broadcast operation . 52
14.1.6 Multiple slot messages . 53
14.2 Information . 53
14.2.1 Information provided by the AIS . 54
14.2.2 Reporting intervals . 54
14.3 Event log . 55
14.3.1 Method of measurement . 56
14.3.2 Required results . 56
14.4 Initialization period . 56
14.4.1 Method of measurement . 56
14.4.2 Required results . 56
14.5 Technical characteristics . 56
14.5.1 Channel selection . 56
14.5.2 Transceiver protection . 57
14.5.3 Automatic power setting . 57
14.6 Alarms and indicators, fall-back arrangements . 57
14.6.1 Loss of power supply . 57
14.6.2 Monitoring of functions and integrity . 57
14.6.3 Monitoring of sensor data . 59
14.7 Display, input and output . 62
14.7.1 Data input/output facilities . 62
14.7.2 Initiate message transmission . 62
14.7.3 Communication test . 63
14.7.4 System control. 63
14.7.5 Display of received targets . 64
14.7.6 Display of position quality . 65
14.7.7 Display of targets if optional filter is implemented . 65
14.7.8 Display of received safety related messages . 66
14.7.9 Presentation of navigation information . 66
15 Physical tests . 66
15.1 TDMA transmitter . 67
15.1.1 Frequency error . 67
15.1.2 Carrier power . 67
15.1.3 Slotted transmission spectrum . 68
15.1.4 Modulation accuracy . 69
15.1.5 Transmitter output power characteristics . 69
15.2 TDMA receivers . 70
15.2.1 Sensitivity . 70

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61993-2 © IEC:2012(E) – 5 –


15.2.2 Error behaviour at high input levels . 71

15.2.3 Co-channel rejection . 71

15.2.4 Adjacent channel selectivity . 72

15.2.5 Spurious response rejection . 72

15.2.6 Intermodulation response rejection and blocking . 75

15.2.7 Transmit to receive switching time . 76

15.2.8 Immunity to out-of-band energy . 77

15.3 Conducted spurious emissions . 77

15.3.1 Spurious emissions from the transmitter . 77

15.3.2 Spurious emissions from the receiver . 78

16 Specific tests of link layer . 78
16.1 TDMA synchronisation. 78
16.1.1 Synchronisation test using UTC . 78
16.1.2 Synchronisation test using UTC with repeated messages . 79
16.1.3 Synchronisation test without UTC, semaphore . 79
16.1.4 Synchronisation test without UTC . 80
16.1.5 Reception of un-synchronised messages . 80
16.2 Time division (frame format) . 80
16.2.1 Method of measurement . 80
16.2.2 Required results . 80
16.3 Synchronisation and jitter accuracy . 81
16.3.1 Definition . 81
16.3.2 Method of measurement . 81
16.3.3 Required results . 81
16.4 Data encoding (bit stuffing) . 81
16.4.1 Method of measurement . 81
16.4.2 Required results . 81
16.5 Frame check sequence . 81
16.5.1 Method of measurement . 81
16.5.2 Required results . 81
16.6 Slot allocation (channel access protocols) . 82
16.6.1 Network entry . 82
16.6.2 Autonomous scheduled transmissions (SOTDMA) . 82
16.6.3 Autonomous scheduled transmissions (ITDMA) . 82
16.6.4 Safety related/binary message transmission . 83

16.6.5 Transmission of Message 5 (ITDMA) . 83
16.6.6 Assigned operation . 83
16.6.7 Group assignment . 84
16.6.8 Fixed allocated transmissions (FATDMA) . 88
16.6.9 Randomisation of message transmissions . 88
16.7 Message formats . 88
16.7.1 Received messages . 88
16.7.2 Transmitted messages. 89
17 Specific tests of network layer . 89
17.1 Dual channel operation – Alternate transmissions . 89
17.1.1 Method of measurement . 89
17.1.2 Required results . 89
17.2 Regional area designation by VDL message . 89
17.2.1 Method of measurement . 89

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17.2.2 Required results . 90

17.3 Regional area designation by serial message . 90

17.4 Regional area designation with lost position . 91

17.4.1 Method of measurement . 91

17.4.2 Required results . 91

17.5 Power setting . 91

17.5.1 Method of measurement . 91

17.5.2 Required results . 91

17.6 Message priority handling . 91

17.6.1 Method of measurement . 91

17.6.2 Required results . 91
17.7 Slot reuse and FATDMA reservations . 91
17.7.1 Method of measurement . 91
17.7.2 Required results . 92
17.8 Management of received regional operating settings . 92
17.8.1 Test for replacement or erasure of dated or remote regional
operating settings . 92
17.8.2 Test of correct input via presentation interface or MKD . 93
17.8.3 Test of addressed telecommand . 94
17.8.4 Test for invalid regional operating areas . 94
17.9 Continuation of autonomous mode reporting interval . 95
17.9.1 Method of test . 95
17.9.2 Required results . 95
18 Specific tests of transport layer . 95
18.1 Addressed messages . 95
18.1.1 Transmission . 95
18.1.2 Acknowledgement . 95
18.1.3 Transmission retry . 95
18.1.4 Acknowledgement of addressed safety related messages . 96
18.1.5 Behaviour of NavStatus 14 reception . 96
18.2 Interrogation responses . 96
18.2.1 Method of measurement . 96
18.2.2 Required results . 96
19 Specific presentation interface tests .
...