IEC 62320-2:2016

IEC 62320-2 ®
Edition 2.0 2016-10
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Maritime navigation and radiocommunication equipment and systems –
Automatic identification system (AIS) –
Part 2: AIS AtoN Stations – Operational and performance requirements, methods
of testing and required test results

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IEC 62320-2 ®
Edition 2.0 2016-10
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Maritime navigation and radiocommunication equipment and systems –

Automatic identification system (AIS) –

Part 2: AIS AtoN Stations – Operational and performance requirements, methods

of testing and required test results

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 47.020.70 ISBN 978-2-8322-3735-9

– 2 – IEC 62320-2:2016 RLV © IEC 2016
CONTENTS
FOREWORD . 9
1 Scope . 11
2 Normative references . 11
3 Terms, definitions and abbreviations . 12
3.1 Terms and definitions . 12
3.2 Abbreviated terms . 12
4 Description . 13
4.1 Types of AIS AtoN stations . 13
4.2 Type 1 AIS AtoN station . 16
4.2.1 Type 1 AIS AtoN station Characteristics . 16
4.2.2 Capability . 18
4.2.3 Type 1 AIS AtoN station – Alternatives . 18
4.3 Type 2 AIS AtoN station . 19
4.3.1 Type 2 AIS AtoN station Characteristics . 19
4.3.2 Capability . 19
4.3.3 Control receiver . 19
4.3.4 Type 2 AIS AtoN station – Alternatives . 19
4.4 Type 3 AIS AtoN Station . 20
4.4.1 Type 3 AIS AtoN station Characteristics . 20
4.4.2 Type 3 AIS AtoN station Capability . 20
4.4.3 AIS receiver (AIS Rx) . 20
4.4.4 Type 3 AIS AtoN station – Alternatives . 20
4.5 Optional direct configuration via VDL (types 2 and 3) . 21
4.6 Optional configuration via VDL using chaining of AIS AtoN Stations (Types 2
and 3) . 21
5 Requirements for AIS AtoN stations . 25
5.1 Physical layer requirement . 25
5.1.1 Transmitter requirements . 25
5.1.2 Receiver requirements . 26
5.1.3 Power consumption . 27
5.1.4 Environmental requirements . 27
5.2 Link layer requirements . 28
5.2.1 General . 28
5.2.2 AIS Messages . 28
5.2.3 Synchronisation . 29
5.2.4 VDL access schemes. 29
5.2.5 Autonomous mode . 32
5.2.6 Electronic position fix system . 33
5.2.7 Built-in integrity test . 34
5.3 Requirements for the Configuration method . 35
5.3.1 General . 35
5.3.2 Alternative for types 1, 2 and 3 . 35
5.3.3 Chaining of AIS AtoN stations . 38
5.4 Repeat broadcast of active AIS-SART message . 38
5.5 Other requirements . 38
5.5.1 Additional features . 38

5.5.2 Manufacturer’s information . 38
5.5.3 Marking and identification . 39
5.5.4 Additional connection points . 39
6 Tests of AIS AtoN stations – Method of measurement and required results. 39
6.1 General . 39
6.2 Test conditions . 39
6.2.1 Normal test conditions . 39
6.2.2 Extreme test conditions . 39
6.2.3 Standard test environment . 40
6.2.4 Test signals . 40
6.2.5 Arrangements for test signals applied to the receiver input . 42
6.2.6 Encoder for receiver measurements . 42
6.2.7 Waiver for receivers . 42
6.2.8 Impedance . 42
6.2.9 Artificial antenna (dummy load) . 42
6.2.10 Facilities for access . 42
6.2.11 Modes of operation of the transmitter. 42
6.2.12 Measurement uncertainties . 43
7 AIS AtoN Station RF tests . 43
7.1 RF tests (transmitter and receiver) TDMA transmitter . 43
7.1.1 General . 43
7.1.2 Frequency error . 43
7.1.3 Carrier power . 44
7.1.4 Modulation spectrum slotted transmission . 45
7.1.5 Transmitter test sequence and modulation accuracy . 46
7.1.6 Transmitter output power versus time function (FATDMA and RATDMA) . 47
7.2 TDMA receivers (types 2 and 3) . 48
7.2.1 Sensitivity . 48
7.2.2 Error behaviour at high input levels. 49
7.2.3 Co-channel rejection . 50
7.2.4 Adjacent channel selectivity . 51
7.2.5 Spurious response rejection . 52
7.2.6 Inter-modulation response rejection . 54
7.2.7 Blocking or desensitization . 56
7.3 Conducted spurious emissions at the antenna . 57
7.3.1 Spurious emissions from the receiver . 57
7.3.2 Spurious emissions from the transmitter . 57
8 Functional tests . 58
8.1 Tests for Configuration method . 58
8.1.1 General . 58
8.1.2 Configure test Configuration for Message 21 . 58
8.1.3 Schedule mode A FATDMA Message 21 (single report, alternating
channel operation) . 59
8.1.4 Schedule mode B FATDMA Message 21 (dual report, dual channel
operation) . 60
8.1.5 Schedule mode C FATDMA Message 21 (single report, single channel
operation) . 60
8.1.6 Schedule mode A RATDMA Message 21 (Type 3) (single report,
alternating channel operation) . 61

– 4 – IEC 62320-2:2016 RLV © IEC 2016
8.1.7 Schedule mode B RATDMA Message 21 (Type 3) (dual report, dual
channel operation) . 62
8.1.8 Schedule mode C RATDMA Message 21 (type 3) (single channel
operation) . 62
8.1.9 Addressed binary data Scheduled transmission of Message 6 . 63
8.1.10 Test Scheduled transmission of Message 8 . 64
8.1.11 AIS AtoN configuration Scheduled transmission of Messages 12 . 64
8.1.12 AIS AtoN configuration Scheduled transmission of Messages 14 . 64
8.1.13 Unscheduled transmission . 64
8.2 Synchronisation accuracy . 65
8.2.1 Implemented synchronisation modes and synchronisation error . 65
8.2.2 Synchronisation test without UTC (types 2 and 3) . 66
8.3 Tests for EPFS . 67
8.3.1 Position source . 67
8.3.2 Invalid position . 67
8.3.3 Off-position monitor . 67
8.4 Additional Receive addressed messages (types 2 and 3) . 68
8.4.1 Purpose . 68
8.4.2 Method of measurement . 68
8.4.3 Required results . 68
8.5 Interrogation response (Type 3) . 68
8.5.1 Purpose . 68
8.5.2 Method of measurement . 68
8.5.3 Required results . 69
8.6 Repeat AIS-SART messages . 69
8.6.1 Purpose . 69
8.6.2 Method of measurement . 69
8.6.3 Required results . 69
8.7 Additional functionality as implemented by the manufacturer. 69
8.7.1 Test for configuration of the receiver turn-on times (types 2 and 3) . 69
8.5.2 Test for configure proprietary AtoN control .
8.5.3 Test for configuration of payload re-broadcast .
8.7.2 Test for configuration of payload transmission . 72
8.7.3 Test for forced broadcast . 72
8.7.4 Test for version information . 73
8.7.5 Test for AFC DCR – AtoN function ID capability . 73
8.7.6 Test for assigning an encryption key for VDL configuration . 73
8.7.7 Test for VDL configuration using chaining (Types 2 and 3) . 74
8.8 Test for BIIT . 80
8.8.1 Purpose . 80
8.8.2 Method of measurement . 81
8.8.3 Required results . 81
8.9 Transmitter shutdown procedure . 81
8.9.1 Purpose . 81
8.9.2 Method of measurement . 81
8.9.3 Required results . 81
8.10 Test for Power supply . 81
8.8.1 Average power consumption .
8.10.1 Purpose . 81

8.10.2 Method of measurement . 82
8.10.3 Required results . 82
8.11 Environmental tests . 82
8.12 External removable media . 82
8.12.1 Purpose . 82
8.12.2 Method of measurement . 82
8.12.3 Required results . 82
8.13 Other tests . 82
8.13.1 Quality assurance . 82
8.13.2 Additional features . 82
8.13.3 Manual . 83
8.13.4 Marking and identification . 83
8.14 Optional TAG block encapsulation . 83
8.14.1 Application . 83
8.14.2 TAG block capabilities . 83
8.14.3 Activation of source-identification for output . 83
8.14.4 Activation of Destination-identification . 84
8.14.5 Activation of Source-identification for input . 85
8.14.6 Use of multiple source-identifications for input . 86
8.14.7 Test of grouping by TAG blocks for output . 87
8.14.8 Test of UNIX time output . 88
8.14.9 Test of line-count output . 88
Annex A (informative) Proposed additional IEC 61162 AIS AtoN Station sentences .
Annex A (informative) AIS AtoN station configuration structures . 100
A.1 AIS AtoN station configuration structures . 100
A.2 MMSI Identification configuration for command (AID) . 102
A.3 Extended/general AtoN station configuration command (ACE/ACF/ACG) . 104
A.4 Configure broadcast rates for AtoN Station message command (CBR) . 109
A.5 AKE – Configuration of encryption key (CEK) . 112
A.6 Configure the receiver turn-on times command (ARW) . 112
A.7 Configure Proprietary AtoN control command (MCR) . 114
A.8 MPR – Configuration of message payload rebroadcast command for
broadcast (MEB) . 115
A.9 Forced broadcast command (AFB) . 116
A.10 Version information (VER) . 117
A.11 AFC – AtoN function ID capability . 118
A.12 Query via the VDL for ACE and ACF Message 21 content . 119
A.13 General query request . 121
A.14 Configuration of receiver operational times command (COP) . 122
A.15 Configuration of message payload for broadcast (MEB) . 123
A.16 Query response via the VDL for Message 21 configuration . 124
Annex B (normative) Message 21 – AtoN status bits . 128
Bibliography . 130

Figure 1 – Functional block diagram of a Type 1 AIS AtoN Station . 17
Figure 2 – Functional block diagram of a type 2 AIS AtoN station . 19
Figure 3 – Functional block diagram of a type 3 AIS AtoN station . 20
Figure 4 – VDL configuration decision tree . 23

– 6 – IEC 62320-2:2016 RLV © IEC 2016
Figure 5 – Power versus time mask . 31
Figure 6 – Reporting modes for Message 21 . 33
Figure 7 – Block diagram of AIS AtoN test setup . 40
Figure 8 – Format for repeating four-packet cluster . 41
Figure 9 – Measurement arrangement for frequency error . 44
Figure 10 – Measurement arrangement for carrier power . 44
Figure 11 – Emission mask . 45
Figure 12 – Power versus time mask .
Figure 12 – Measurement arrangement for modulation accuracy . 46
Figure 13 – Measurement arrangement for sensitivity . 49
Figure 14 – Measurement arrangement for error behaviour . 50
Figure 15 – Measurement arrangement for co-channel rejection . 50
Figure 16 – Measurement arrangement with messages for adjacent channel selectivity . 51
Figure 17 – PER/BER or SINAD measuring equipment . 53
Figure 18 – Measurement arrangement for inter-modulation . 55
Figure 19 – Measurement arrangement for blocking or desensitisation . 56
Figure 20 – Test scenario for basic chaining test . 76
Figure 21 – Test scenario for linear chaining test . 78
Figure 22 – Test scenario for forked chaining test . 79
Figure B.1 – Use of AtoN status bits as IALA A-126 Page ID 7 . 128

Table 1 – Description of AIS AtoN Stations . 14
Table 2 – Use of VDL messages . 15
Table 3 – Summary of optional Type 1 AIS AtoN Station messages . 18
Table 4 – Chaining of AIS AtoN Stations .
Table 4 – Summary of optional Type 3 AIS AtoN Station messages . 21
Table 5 – Configuration of AIS AtoN stations via VDL . 24
Table 6 – Required parameter settings for an AIS AtoN Station . 25
Table 7 – Required settings of physical layer constants . 25
Table 8 – Modulation parameters of the physical layer of the AIS AtoN station . 26
Table 9 – Minimum required TDMA transmitter characteristics . 26
Table 10 – Required receiver characteristics . 27
Table 11 – Maximum allowed time error . 29
Table 12 – Definitions of timing for Figure 5 . 31
Table 13 – AIS AtoN Station reaction to BIIT conditions . 34
Table 14 – Standard sentences . 36
Table 15 – DCR Capabilities . 37
Table 16 – Optional TAG Block functions . 38
Table 17 – Content of first two packets . 41
Table 18 – Fixed PRS data derived from ITU-T O.153. 41
Table 19 – Maximum values of absolute measurement uncertainties . 43
Table 20 – Peak frequency deviation versus time. 47
Table 21 – Definition of timings for Figure 21 . 48

Table 22 – Frequencies for inter-modulation test . 55
Table A.1 – Parameter setting in Message 25 for AIS AtoN Station applications . 100
Table A.2 – Parameter setting in Message 6 for AIS AtoN Station applications . 100
Table A.3 – Message 25 or 6 function identifier used for configuration and query via
the VDL . 101
Table A.4 – Configuration via the VDL for AID MMSI identification . 103
Table A.5 – Query via the VDL for AID MMSI identification . 103
Table A.6 – Query response via the VDL for AID MMSI identification . 104
Table A.7 – Configuration via the VDL for ACE and ACF, Part 1 . 105
Table A.8 – Configuration via the VDL for ACE and ACF, Part 2 . 105
Table A.9 – Configuration via the VDL for ACE and ACF, Part 3 . 106
Table A.10 – Configuration via the VDL for ACE and ACF, Part 4 (first 12 characters of
AtoN name) . 106
Table A.11 – Configuration via the VDL for ACE and ACF, Part 5 (second 12
characters of AtoN name) . 107
Table A.12 – Configuration via the VDL for ACE and ACF, Part 6 (third (last) 10
characters of AtoN name) . 107
Table A.13 – Query request via the VDL for ACE/ACF content . 107
Table A.14 – Query response via the VDL for ACE and ACF, Part 1 . 108
Table A.15 – Query response via the VDL for ACE and ACF, Part 2 . 108
Table A.16 – Configuration via the VDL for FATDMA/CSTDMA . 109
Table A.17 – Configuration via the VDL for AAR for RATDMA/CSTDMA . 110
Table A.18 – Query request via the VDL for AAR for AtoN broadcast rates . 111
Table A.19 – Query response via the VDL for AAR with AtoN broadcast rates . 111
Table A.20 – Configuration via the VDL for AKE of encryption key . 112
Table A.21 – Configuration via the VDL for ARW receiver turn-on times . 113
Table A.22 – Query request via the VDL for ARW receiver turn-on times . 113
Table A.23 – Query response via the VDL for ARW receiver turn-on times . 114
Table A.24 – Configuration via the VDL for MCR proprietary information . 114
Table A.25 – Query request via the VDL for MCR proprietary information . 115
Table A.26 – Query response via the VDL for MCR proprietary information . 115
Table A.27 – Configuration or function via the VDL for MPR of message payload . 116
Table A.28 – Function via the VDL for PBR forced broadcast . 116
Table A.29 – Query request via the VDL for VER . 117
Table A.30 – Query response via the VDL for VER . 118
Table A.31 – Query request via the VDL for AFC function ID . 118
Table A.32 – Query response via the VDL for AFC function ID . 119
Table A.33 – Query request via the VDL for Message 21 content . 120
Table A.34 – Query response via the VDL for Message 21 content . 121
Table A.35 – General query request via the VDL . 121
Table A.36 – Configuration via the VDL for COP . 122
Table A.37 – Payload control configuration via the VDL . 123
Table A.38 – Payload binary data via the VDL . 123
Table A.39 – Query response via the VDL, Message 21 configuration . 124

– 8 – IEC 62320-2:2016 RLV © IEC 2016
Table A.40 – Query response via the VDL, first 12 characters of AtoN name . 125
Table A.41 – Query response via the VDL, second 12 characters of AtoN name . 125
Table A.42 – Query response via the VDL, last 10 characters of AtoN name . 125
Table B.1 – AtoN status pages . 128

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MARITIME NAVIGATION AND RADIOCOMMUNICATION EQUIPMENT
AND SYSTEMS – AUTOMATIC IDENTIFICATION SYSTEM (AIS) –

Part 2: AIS AtoN Stations – Operational and performance
requirements, methods of testing and required test results

FOREWORD
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– 10 – IEC 62320-2:2016 RLV © IEC 2016
International Standard IEC 62320-2 has been prepared by IEC technical committee 80:
Maritime navigation and radiocommunication equipment and systems.
This second edition cancels and replaces the first edition, published in 2008, and constitutes
a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
• additional cyber security measures;
• updated description of configuration via VDL;
• updated VDL access scheme requirements;
• new PI sentences and VDL message structures with added description for optional TAG
blocks;
• added requirement for at least one standard method for configuration using Standard PI
sentences;
• updated test methods and updated Annexes.
The text of this standard is based on the following documents:
FDIS Report on voting
80/817/FDIS 80/822/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.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 62320 series, published under the general title Maritime
navigation and radiocommunication equipment and systems – Automatic identification system
(AIS), can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
MARITIME NAVIGATION AND RADIOCOMMUNICATION EQUIPMENT
AND SYSTEMS – AUTOMATIC IDENTIFICATION SYSTEM (AIS) –

Part 2: AIS AtoN Stations – Operational and performance
requirements, methods of testing and required test results

1 Scope
This part of IEC 62320 specifies the operational and performance requirements, methods of
testing and required test results for AIS AtoN Stations compatible with the performance
standards adopted by IMO Resolution MSC.74(69), Annex 3, Universal AIS. It incorporates
the technical characteristics of non-shipborne AIS AtoN equipment, included in
Recommendation ITU-R M.1371 and IALA Recommendation A-126. Where applicable, it also
takes into account the ITU Radio Regulations. This standard takes into account other
associated IEC International Standards and existing national standards, as applicable.
This document is applicable for automatic identification system (AIS) installations on aids to
navigation (AtoN).
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendments) applies.
IEC 60945, Maritime navigation and radiocommunication equipment and systems – General
requirements – Methods of testing and required test results
IEC 61108 (all parts), Maritime navigation and radiocommunication equipment and systems –
Global navigation satellite systems (GNSS)
IEC 61108-1, Maritime navigation and radiocommunication equipment and systems – Global
navigation satellite systems (GNSS) – Part 1: Global positioning system (GPS) – Receiver
equipment – Performance standards, methods of testing and required test results
IEC 61108-2, Maritime navigation and radiocommunication equipment and systems – Global
navigation satellite systems (GNSS) – Part 2: Global navigation satellite system (GLONASS)
– Receiver equipment – Performance standards, methods of testing and required test results
IEC 61108-4, Maritime navigation and radiocommunication equipment and systems – Global
navigation satellite systems (GNSS) – Part 4: Shipborne DGPS and DGLONASS maritime
radio beacon receiver equipment – Performance requirements, methods of testing and
required results
IEC 61162-1, Maritime navigation and radiocommunication equipment and systems – Digital
interfaces – Part 1: Single talker and multiple listeners
IEC 62287-1, Maritime navigation and radiocommunication equipment and systems – Class B
shipborne equipment of the automatic identification system (AIS) – Part 1: Carrier-sense time
division multiple access (CSTDMA) techniques

-------------------
...

IEC 62320-2 ®
Edition 2.0 2016-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Maritime navigation and radiocommunication equipment and systems –
Automatic identification system (AIS) –
Part 2: AIS AtoN Stations – Operational and performance requirements, methods
of testing and required test results

Matériels et systèmes de navigation et de radiocommunication maritimes –
Système d'identification automatique (AIS) –
Partie 2: Stations d'aides à la navigation AIS – Exigences opérationnelles et de
fonctionnement, méthodes d'essai et résultats d'essai exigés

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IEC 62320-2 ®
Edition 2.0 2016-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Maritime navigation and radiocommunication equipment and systems –

Automatic identification system (AIS) –

Part 2: AIS AtoN Stations – Operational and performance requirements,

methods of testing and required test results

Matériels et systèmes de navigation et de radiocommunication maritimes –

Système d'identification automatique (AIS) –

Partie 2: Stations d'aides à la navigation AIS – Exigences opérationnelles et de

fonctionnement, méthodes d'essai et résultats d'essai exigés

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 47.020.70 ISBN 978-2-8322-5229-1

– 2 – IEC 62320-2:2016 © IEC 2016
CONTENTS
FOREWORD . 8
1 Scope . 10
2 Normative references . 10
3 Terms, definitions and abbreviations . 11
3.1 Terms and definitions . 11
3.2 Abbreviated terms . 11
4 Description . 12
4.1 Types of AIS AtoN stations . 12
4.2 Type 1 AIS AtoN station . 15
4.2.1 Characteristics. 15
4.2.2 Capability . 17
4.2.3 Alternatives . 17
4.3 Type 2 AIS AtoN station . 18
4.3.1 Characteristics. 18
4.3.2 Capability . 18
4.3.3 Control receiver . 18
4.3.4 Alternatives . 18
4.4 Type 3 AIS AtoN Station . 19
4.4.1 Characteristics. 19
4.4.2 Capability . 19
4.4.3 AIS receiver (AIS Rx) . 19
4.4.4 Alternatives . 19
4.5 Optional direct configuration via VDL (types 2 and 3) . 20
4.6 Optional configuration via VDL using chaining (type 3) . 20
5 Requirements for AIS AtoN stations . 23
5.1 Physical layer . 23
5.1.1 Transmitter requirements . 23
5.1.2 Receiver requirements . 25
5.1.3 Power consumption . 26
5.1.4 Environmental requirements . 26
5.2 Link layer . 26
5.2.1 General . 26
5.2.2 AIS Messages . 27
5.2.3 Synchronisation . 27
5.2.4 VDL access schemes. 28
5.2.5 Autonomous mode . 30
5.2.6 Electronic position fix system . 31
5.2.7 Built-in integrity test . 32
5.3 Configuration method . 33
5.3.1 General . 33
5.3.2 Alternative for types 1, 2 and 3 . 33
5.3.3 Chaining of AIS AtoN stations . 36
5.4 Repeat broadcast of active AIS-SART message . 36
5.5 Other requirements . 36
5.5.1 Additional features . 36
5.5.2 Manufacturer’s information . 36

5.5.3 Marking and identification . 37
5.5.4 Additional connection points . 37
6 Tests of AIS AtoN stations . 37
6.1 General . 37
6.2 Test conditions . 37
6.2.1 Normal test conditions . 37
6.2.2 Extreme test conditions . 37
6.2.3 Standard test environment . 38
6.2.4 Test signals . 38
6.2.5 Arrangements for test signals applied to the receiver input . 39
6.2.6 Encoder for receiver measurements . 40
6.2.7 Waiver for receivers . 40
6.2.8 Impedance . 40
6.2.9 Artificial antenna (dummy load) . 40
6.2.10 Facilities for access . 40
6.2.11 Modes of operation of the transmitter. 40
6.2.12 Measurement uncertainties . 40
7 RF tests . 41
7.1 TDMA transmitter . 41
7.1.1 General . 41
7.1.2 Frequency error . 41
7.1.3 Carrier power . 42
7.1.4 Modulation spectrum slotted transmission . 42
7.1.5 Transmitter test sequence and modulation accuracy . 43
7.1.6 Transmitter output power versus time function (FATDMA and RATDMA) . 45
7.2 TDMA receivers (types 2 and 3) . 46
7.2.1 Sensitivity . 46
7.2.2 Error behaviour at high input levels. 47
7.2.3 Co-channel rejection . 47
7.2.4 Adjacent channel selectivity . 48
7.2.5 Spurious response rejection . 49
7.2.6 Inter-modulation response rejection . 52
7.2.7 Blocking or desensitization . 53
7.3 Conducted spurious emissions at the antenna . 54
7.3.1 Spurious emissions from the receiver . 54
7.3.2 Spurious emissions from the transmitter . 54
8 Functional tests . 55
8.1 Configuration method . 55
8.1.1 General . 55
8.1.2 Configuration for Message 21 . 55
8.1.3 Schedule mode A FATDMA Message 21 (single report, alternating
channel operation) . 56
8.1.4 Schedule mode B FATDMA Message 21 (dual report, dual channel
operation) . 57
8.1.5 Schedule mode C FATDMA Message 21 (single report, single channel
operation) . 57
8.1.6 Schedule mode A RATDMA Message 21 (Type 3) (single report,
alternating channel operation) . 58
8.1.7 Schedule mode B RATDMA Message 21 (Type 3) (dual report, dual
channel operation) . 59

– 4 – IEC 62320-2:2016 © IEC 2016
8.1.8 Schedule mode C RATDMA Message 21 (type 3) (single channel
operation) . 59
8.1.9 Scheduled transmission of Message 6 . 60
8.1.10 Scheduled transmission of Message 8 . 61
8.1.11 Scheduled transmission of Message 12 . 61
8.1.12 Scheduled transmission of Message 14 . 61
8.1.13 Unscheduled transmission . 62
8.2 Synchronisation accuracy . 62
8.2.1 Implemented synchronisation modes and synchronisation error . 62
8.2.2 Synchronisation test without UTC (types 2 and 3) . 63
8.3 EPFS . 64
8.3.1 Position source . 64
8.3.2 Invalid position . 64
8.3.3 Off-position monitor . 64
8.4 Receive addressed message (types 2 and 3) . 65
8.4.1 Purpose . 65
8.4.2 Method of measurement . 65
8.4.3 Required results . 65
8.5 Interrogation response (Type 3) . 65
8.5.1 Purpose . 65
8.5.2 Method of measurement . 65
8.5.3 Required results . 66
8.6 Repeat AIS-SART messages . 66
8.6.1 Purpose . 66
8.6.2 Method of measurement . 66
8.6.3 Required results . 66
8.7 Additional functionality as implemented by the manufacturer. 66
8.7.1 Test for configuration of the receiver turn-on times (types 2 and 3) . 66
8.7.2 Test for configuration of payload transmission . 67
8.7.3 Test for forced broadcast . 68
8.7.4 Test for version information . 68
8.7.5 Test for DCR – AtoN function ID capability . 69
8.7.6 Test for assigning an encryption key for VDL configuration . 69
8.7.7 Test for VDL configuration using chaining (Type 3) . 70
8.8 BIIT. 75
8.8.1 Purpose . 75
8.8.2 Method of measurement . 75
8.8.3 Required results . 75
8.9 Transmitter shutdown procedure . 75
8.9.1 Purpose . 75
8.9.2 Method of measurement . 75
8.9.3 Required results . 75
8.10 Power supply . 75
8.10.1 Purpose . 75
8.10.2 Method of measurement . 76
8.10.3 Required results . 76
8.11 Environmental . 76
8.12 External removable media . 76
8.12.1 Purpose . 76

8.12.2 Method of measurement . 76
8.12.3 Required results . 76
8.13 Other tests . 76
8.13.1 Quality assurance . 76
8.13.2 Additional features . 76
8.13.3 Manual . 77
8.13.4 Marking and identification . 77
8.14 Optional TAG block encapsulation . 77
8.14.1 Application . 77
8.14.2 TAG block capabilities . 77
8.14.3 Activation of source-identification for output . 77
8.14.4 Activation of Destination-identification . 78
8.14.5 Activation of Source-identification for input . 79
8.14.6 Use of multiple source-identifications for input . 80
8.14.7 Test of grouping by TAG blocks for output . 81
8.14.8 Test of UNIX time output . 82
8.14.9 Test of line-count output . 82
Annex A (informative) AIS AtoN station configuration structures . 84
A.1 AIS AtoN station configuration structures . 84
A.2 MMSI Identification configuration command (AID) . 87
A.3 Extended/general AtoN station configuration command (ACF/ACG) . 89
A.4 Configure broadcast rates for AtoN Station message command (CBR) . 94
A.5 Configuration of encryption key (CEK) . 97
A.6 Configure the receiver turn-on times (ARW) . 98
A.7 Proprietary AtoN control command (MCR). 99
A.8 Configuration of message payload for broadcast (MEB) . 101
A.9 Forced broadcast command (AFB) . 101
A.10 Version information (VER) . 102
A.11 AtoN function ID capability . 104
A.12 Query via the VDL for Message 21 content . 105
A.13 General query request . 106
A.14 Configuration of receiver operational times command (COP) . 107
A.15 Configuration of message payload for broadcast (MEB) . 108
A.16 Query response via the VDL for Message 21 configuration . 110
Annex B (normative) Message 21 – AtoN status bits . 113
Bibliography . 114

Figure 1 – Functional block diagram of a Type 1 AIS AtoN Station . 16
Figure 2 – Functional block diagram of a type 2 AIS AtoN station . 18
Figure 3 – Functional block diagram of a type 3 AIS AtoN station . 19
Figure 4 – VDL configuration decision tree . 22
Figure 5 – Power versus time mask . 29
Figure 6 – Reporting modes for Message 21 . 31
Figure 7 – Block diagram of AIS AtoN test setup . 38
Figure 8 – Format for repeating four-packet cluster . 39
Figure 9 – Measurement arrangement for frequency error . 41
Figure 10 – Measurement arrangement for carrier power . 42

– 6 – IEC 62320-2:2016 © IEC 2016
Figure 11 – Emission mask . 43
Figure 12 – Measurement arrangement for modulation accuracy . 44
Figure 13 – Measurement arrangement for sensitivity . 46
Figure 14 – Measurement arrangement for error behaviour . 47
Figure 15 – Measurement arrangement for co-channel rejection . 48
Figure 16 – Measurement arrangement for adjacent channel selectivity . 49
Figure 17 – PER/BER or SINAD measuring equipment . 50
Figure 18 – Measurement arrangement for inter-modulation . 52
Figure 19 – Measurement arrangement for blocking or desensitisation . 53
Figure 20 – Test scenario for basic chaining test . 70
Figure 21 – Test scenario for linear chaining test . 72
Figure 22 – Test scenario for forked chaining test . 73
Figure B.1 – Use of AtoN status bits as IALA A-126 Page ID 7 . 113

Table 1 – Description of AIS AtoN stations . 13
Table 2 – Use of VDL messages . 14
Table 3 – Summary of optional Type 1 AIS AtoN Station messages . 17
Table 4 – Summary of optional Type 3 AIS AtoN Station messages . 20
Table 5 – Configuration of AIS AtoN stations via VDL . 23
Table 6 – Required parameter settings for an AIS AtoN Station . 24
Table 7 – Required settings of physical layer constants . 24
Table 8 – Modulation parameters of the physical layer of the AIS AtoN station . 24
Table 9 – Minimum required TDMA transmitter characteristics . 25
Table 10 – Required receiver characteristics . 26
Table 11 – Maximum allowed time error . 27
Table 12 – Definitions of timing for Figure 5 . 30
Table 13 – AIS AtoN Station reaction to BIIT conditions . 33
Table 14 – Standard sentences . 34
Table 15 – DCR Capabilities . 35
Table 16 – Optional TAG Block functions . 36
Table 17 – Content of first two packets . 39
Table 18 – Fixed PRS data derived from ITU-T O.153. 39
Table 19 – Maximum values of absolute measurement uncertainties . 41
Table 20 – Peak frequency deviation versus time. 45
Table 21 – Definition of timings . 45
Table 22 – Frequencies for inter-modulation test . 53
Table A.1 – Parameter setting in Message 25 for AIS AtoN Station applications . 84
Table A.2 – Parameter setting in Message 6 for AIS AtoN Station applications . 85
Table A.3 – Message 25 or 6 function identifier used for configuration and query via
the VDL . 86
Table A.4 – Configuration via the VDL for MMSI identification . 88
Table A.5 – Query via the VDL for MMSI identification . 88
Table A.6 – Query response via the VDL for MMSI identification . 89

Table A.7 – Configuration via the VDL, Part 1 . 90
Table A.8 – Configuration via the VDL, Part 2 . 90
Table A.9 – Configuration via the VDL, Part 3 . 91
Table A.10 – Configuration via the VDL, Part 4 (first 12 characters of AtoN name). 91
Table A.11 – Configuration via the VDL, Part 5 (second 12 characters of AtoN name) . 92
Table A.12 – Configuration via the VDL, Part 6 (third (last) 10 characters of AtoN
name) . 92
Table A.13 – Query request via the VDL . 92
Table A.14 – Query response via the VDL, Part 1 . 93
Table A.15 – Query response via the VDL, Part 2 . 94
Table A.16 – Configuration via the VDL for FATDMA . 95
Table A.17 – Configuration via the VDL for RATDMA/CSTDMA . 96
Table A.18 – Query request via the VDL for AtoN broadcast rates . 96
Table A.19 – Query response via the VDL with AtoN broadcast rates . 97
Table A.20 – Configuration via the VDL of encryption key . 98
Table A.21 – Configuration via the VDL for receiver turn-on times . 98
Table A.22 – Query request via the VDL for receiver turn-on times . 99
Table A.23 – Query response via the VDL for receiver turn-on times. 99
Table A.24 – Configuration via the VDL for proprietary information . 100
Table A.25 – Query request via the VDL for proprietary information . 100
Table A.26 – Query response via the VDL for proprietary information . 100
Table A.27 – Configuration or function via the VDL of message payload . 101
Table A.28 – Function via the VDL for forced broadcast . 102
Table A.29 – Query request via the VDL for VER . 103
Table A.30 – Query response via the VDL for VER . 104
Table A.31 – Query request via the VDL for function ID . 104
Table A.32 – Query response via the VDL for function ID . 105
Table A.33 – Query request via the VDL for Message 21 content . 106
Table A.34 – Query response via the VDL for Message 21 content . 106
Table A.35 – General query request via the VDL . 107
Table A.36 – Configuration via the VDL for COP . 108
Table A.37 – Payload control configuration via the VDL . 109
Table A.38 – Payload binary data via the VDL . 110
Table A.39 – Query response via the VDL, Message 21 configuration . 111
Table A.40 – Query response via the VDL, first 12 characters of AtoN name . 111
Table A.41 – Query response via the VDL, second 12 characters of AtoN name . 112
Table A.42 – Query response via the VDL, last 10 characters of AtoN name . 112
Table B.1 – AtoN status pages . 113

– 8 – IEC 62320-2:2016 © IEC 2016
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MARITIME NAVIGATION AND RADIOCOMMUNICATION EQUIPMENT
AND SYSTEMS – AUTOMATIC IDENTIFICATION SYSTEM (AIS) –

Part 2: AIS AtoN Stations – Operational and performance
requirements, methods of testing and required test results

FOREWORD
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indispensable for the correct application of this publication.
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patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62320-2 has been prepared by IEC technical committee 80:
Maritime navigation and radiocommunication equipment and systems.
This second edition cancels and replaces the first edition, published in 2008, and constitutes
a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
• additional cyber security measures;
• updated description of configuration via VDL;
• updated VDL access scheme requirements;
• new PI sentences and VDL message structures with added description for optional TAG
blocks;
• added requirement for at least one standard method for configuration using Standard PI
sentences;
• updated test methods and updated Annexes.
This bilingual version (2018-01) corresponds to the monolingual English version, published in
2016-10.
The text of this standard is based on the following documents:
FDIS Report on voting
80/817/FDIS 80/822/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.
The French version of this standard has not been voted upon.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 62320 series, published under the general title Maritime
navigation and radiocommunication equipment and systems – Automatic identification system
(AIS), can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
– 10 – IEC 62320-2:2016 © IEC 2016
MARITIME NAVIGATION AND RADIOCOMMUNICATION EQUIPMENT
AND SYSTEMS – AUTOMATIC IDENTIFICATION SYSTEM (AIS) –

Part 2: AIS AtoN Stations – Operational and performance
requirements, methods of testing and required tes
...