SRT Marine Systems plc 4180051 AIS AtoN Transceiver User Manual Chronos manual

Software Radio Technology plc AIS AtoN Transceiver Chronos manual

User manual

Chronos AIS Aids to Navigation Transceiver
Chronos AIS AtoN Sensor Interface
Installation and operation manual
201-0636:1
Page 1
Table of contents
1 Glossary............................................................................................... 5
2 Notices ................................................................................................. 6
2.1 Safety warnings ................................................................................................................................. 6
2.2 General notices.................................................................................................................................. 6
2.3 Regulatory information....................................................................................................................... 7
3 Introduction ......................................................................................... 9
3.1 About AIS........................................................................................................................................... 9
3.2 System overview.............................................................................................................................. 10
3.3 Supported AIS messages ................................................................................................................ 11
4 AIS AtoN product variants ............................................................... 13
5 Installation ........................................................................................ 14
5.1 What’s in the box (AIS AtoN transceiver) ........................................................................................ 15
5.2 What’s in the box (Sensor Interface) ............................................................................................... 16
5.3 Preparing for installation .................................................................................................................. 17
5.4 Mounting the AIS AtoN transceiver and Sensor Interface ............................................................... 18
6 Transceiver and Sensor Interface connections ............................. 19
6.1 AIS AtoN transceiver connections ................................................................................................... 19
6.2 Sensor Interface connections .......................................................................................................... 22
7 Connecting external sensors and systems.................................... 23
7.1 Connecting sensors and systems to the AIS AtoN Transceiver ..................................................... 23
7.2 Connecting sensors and systems to the Sensor Interface .............................................................. 24
8 Configuration using proAtoN .......................................................... 31
8.1 proAtoN installation.......................................................................................................................... 31
8.2 Application layout............................................................................................................................. 32
8.3 AIS AtoN transceiver configuration.................................................................................................. 33
8.4 Transceiver diagnostics ................................................................................................................... 42
8.5 Sensor configuration ....................................................................................................................... 45
8.6 Other features.................................................................................................................................. 49
9 Operation ........................................................................................... 50
9.1 Standby operation............................................................................................................................ 50
10 Data messages and data sources ................................................... 51
10.1 Configurations without the Sensor Interface.................................................................................... 51
10.2 Configurations with the Sensor Interface......................................................................................... 51
11 Manual configuration........................................................................ 59
11.1 Basic Type 1 AIS AtoN configuration (FATDMA operation) ............................................................ 59
11.2 NMEA0183 / IEC61162 configuration sentences ............................................................................ 59
11.3 Proprietary configuration sentences ................................................................................................ 65
12 Technical specification .................................................................... 68
Page 2
12.1 Applicable equipment standards...................................................................................................... 68
12.2 AIS AtoN transceiver specification................................................................................................... 68
12.3 Sensor Interface specification ......................................................................................................... 70
12.4 Configuration interface specification................................................................................................ 71
12.5 Drawings and dimensions................................................................................................................ 72
13 Firmware upgrade procedure .......................................................... 73
Page 3
Table of figures
Figure 1 The AIS network ........................................................................................................................... 9
Figure 2 Typical AIS AtoN system ............................................................................................................ 10
Figure 3 Typical AIS AtoN transceiver system connections ..................................................................... 14
Figure 4 Typical AIS AtoN transceiver and Sensor Interface system connections ................................... 14
Figure 5 What’s in the box (AIS AtoN transceiver) ................................................................................... 15
Figure 6 What’s in the box (Sensor Interface) .......................................................................................... 16
Figure 7 Mounting the AIS AtoN transceiver and Sensor Interface .......................................................... 18
Figure 8 Transceiver connector locations................................................................................................. 19
Figure 9 Pin numbering for the 18 way Link connector.............................................................................20
Figure 10 Sensor Interface connections ..................................................................................................... 22
Figure 11 Pin numbering for Sensor 1 and Sensor 2 connectors ............................................................... 25
Figure 12 Light current sense loop circuit................................................................................................... 27
Figure 13 Isolated digital input internal reference circuit and examples of external circuits ....................... 28
Figure 14 Non-isolated digital input reference circuit and examples of external circuits ............................ 29
Figure 15 Relay drive output reference circuit ............................................................................................ 30
Figure 16 proAtoN application layout.......................................................................................................... 32
Figure 17 proAtoN tab synchronisation icons ............................................................................................. 33
Figure 18 proAtoN message schedule tab layout....................................................................................... 35
Figure 19 Example FATDMA schedule....................................................................................................... 37
Figure 20 Example RATDMA schedule ...................................................................................................... 38
Figure 21 Virtual AtoN configuration tab layout .......................................................................................... 39
Figure 22 Status input configuration tab layout........................................................................................... 40
Figure 23 Alert messages configuration tab layout..................................................................................... 41
Figure 24 Initial sensor settings tab ............................................................................................................ 45
Figure 25 Sensor settings tab..................................................................................................................... 45
Figure 26 ADC settings tab......................................................................................................................... 46
Figure 27 Message settings tab.................................................................................................................. 47
Figure 28 System information tab............................................................................................................... 48
Figure 29 Live data tab ............................................................................................................................... 49
Figure 30 AIS AtoN Transceiver dimensions.............................................................................................. 72
Figure 31 Sensor Interface dimensions ...................................................................................................... 72
Figure 32 vxsend utility screenshot............................................................................................................. 73
Page 4
List of tables
Table 1 Pin numbers and functions for the supplied 18 way backshell connector .................................. 21
Table 2 Pin numbers and functions for the Sensor Interface Sensor 1 connector .................................. 25
Table 3 Pin numbers and functions for the Sensor Interface Sensor 2 connector .................................. 26
Table 4 General Extended Sensor Interface Configuration Commands.................................................. 53
Table 5 Zeni Lite Message #6 Configuration commands ........................................................................ 54
Table 6 ADC configuration commands.................................................................................................... 55
Table 7 Data mapping for message #6 DAC 235, FI 10.......................................................................... 56
Table 8 Data mapping for message #6 Zeni Lite format.......................................................................... 57
Table 9 Sensor Configuration Options..................................................................................................... 58
Glossary
Page 5
1 Glossary
AIS Automatic Identification System
AtoN Aid to Navigation
BIIT Built In Integrity Test
FATDMA Fixed Access Time Division Multiple Access
GLONASS Global Navigation Satellite System (term specific to the satellite navigation
system operated by the Russian Federation)
GNSS Global Navigation Satellite system (general term used to refer to any satellite
navigation system)
GPS Global Positioning System
IALA International Association of Marine Aids to Navigation and Lighthouse
Authorities
IEC International Electrotechnical commission
ITU International Telecommunication Union
MID (in the context of
MMSI) Maritime Identification Digits
MMSI Maritime Mobile Service Identity
NMEA National Marine Electronics Association
RACON RAdar beaCON, A radar transponder used to mark navigational hazards.
RATDMA Random Access Time Division Multiple Access
RS232 Serial data communications standard - see TIA-232-F
RS422 Serial data communications standard see TIA-422-B
SART Search And Rescue Transponder
SOLAS Safety of Life at Sea
SDI-12 Serial Data Interface at 1200 Baud
USB Universal Serial Bus
UTC Coordinated Universal Time
VDL VHF Data Link
VHF Very High Frequency
VSWR Voltage Standing Wave Ratio
Notices
Page 6
2Notices
When reading this manual please pay particular attention to warnings marked with the
warning triangle symbol shown on the left. These are important messages for safety,
installation and usage of the transceiver.
2.1 Safety warnings
2.2 General notices
2.2.1 Position source
All marine Automatic Identification System (AIS) transceivers utilise a satellite based location system such as
the Global Positioning Satellite (GPS) network. The general term for satellite based location systems is Global
Navigation Satellite System or GNSS. This manual refers to either GNSS or GPS depending on context.
2.2.2 Product category
This product is categorised as 'exposed' in accordance with the definitions provided in IEC 60945.
2.2.3 Disposal of the product and packaging
Please dispose of this product in accordance with the European WEEE Directive or with the applicable local
regulations for disposal of electrical equipment. Every effort has been made to ensure the packaging for the
product is recyclable. Please dispose of the packaging in an environmentally friendly manner.
2.2.4 Accuracy of this manual
This manual is intended as a guide to the installation, setup and use of this product. Every effort has been made
to ensure the accuracy of this manual, however due to continuous product development this manual may not
be accurate in all respects, therefore no guarantee is offered. If you are in any doubt about any aspect of this
product, please contact your supplier.
The part number and revision number of this manual are shown on the lower right hand corner of the front
cover.
!
This equipment must be installed in accordance with the instructions provided in this
manual. Failure to do so will seriously affect its performance and reliability. It is strongly
recommended that a trained technician installs and configures this product.
This equipment is intended as an aid to navigation and is not a replacement for proper
navigational judgement. Information provided by the equipment must not be relied upon as
accurate. User decisions based upon information provided by the equipment are done so
entirely at the users own risk.
!
!
The accuracy of a GNSS position fix is variable and affected by factors such as the antenna
positioning, how many satellites are used to determine a position and for how long satellite
information has been received.
!
Notices
Page 7
2.3 Regulatory information
2.3.1 Declaration of conformity - R&TTE
We, SRT Marine System Solutions Ltd, of Wireless House, Westfield Industrial Estate, Midsomer Norton, Bath,
BA3 4BS declare under our own responsibility that the product Chronos AIS AtoN transceiver to which this
declaration refers conforms to the relevant sections of the following standards and / or other normative
documents.
For Article 3.1 (a) [Health & Safety]:
EN60950-1:2006/A2:2013, relevant sections not addressed by IEC60945:2002-08
IEC 60945:2002-08
For Article 3.1 (b) [EMC]:
IEC 60945:2002-08
For Article 3.2 [Spectrum usage]:
IEC62320-2:2008
IEC61108-1:2003-07
For Article 3.3 [Special requirements]:
IEC62320-2:2008
We, SRT Marine System Solutions Ltd, declare that all essential radio test suites have been carried out and
the above named product is in conformity with all essential requirements of Directive 1999/5/EC.
The conformity assessment procedure referred to in Article 10 and detailed in Annex [III] and [IV] of Directive
1999/5/EC has been followed with the involvement of the following Notified Body.
TÜV SÜD BABT. Octagon House, Concorde Way, Segensworth North, Fareham, Hampshire PO15 5RL
England. Identification mark: 0168.
The technical documentation relevant to the above equipment will be held at:
SRT Marine Solutions Ltd, Wireless House, Westfield Industrial Estate, Midsomer Norton, Bath, BA3 4BS,
England.
Tel:+44 1761 409500
www.srt-marinesystems.com
Name: Neil Peniket, Chief Operating Officer
Date: 26th January 2015
2.3.2 CE Marking
The product carries the CE mark, notified body number and alert symbol as required by the R&TTE directive.
The product is intended for sale in the following member states:
Great Britain, France, Spain, Sweden, Austria, Netherlands, Portugal, Denmark, Norway, Belgium, Italy,
Finland, Ireland, Luxembourg, Germany, Czech Republic, Bulgaria, Cyprus, Estonia, Greece, Hungary,
Iceland, Latvia, Lithuania, Malta, Romania, Slovak Republic, Slovenia, Switzerland/Liechtenstein, Poland.
Restrictions of use: Some EU member states may require a licence to operate this equipment.
Notices
Page 8
2.3.3 FCC and Industry Canada notices
A. FCC Part 15.19(a) statement:
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1)
This device may not cause harmful interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
A. Part 15 Clause 15.105 [EMC Class A/B statement]:
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant
to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may cause harmful interference to
radio communications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the interference by
one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
B. Part 15 Clause 15.21 [Do not modify warning]
Changes or modifications not expressly approved by the party responsible for compliance could void the user's
authority to operate the equipment.
C. RSS-Gen license-exempt notice:
This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the
following two conditions: (1) this device may not cause interference, and (2) this device must accept any
interference, including interference that may cause undesired operation of the device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de
licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de
brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le
brouillage est susceptible d'en compromettre le fonctionnement.
D. RSS-Gen antenna notice:
Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and
maximum (or lesser) gain approved for the transmitter by Industry Canada. To reduce potential radio
interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically
radiated power (e.i.r.p.) is not more than that necessary for successful communication.
Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une
antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le
but de réduire les risques de brouillage radioélectrique à l'intention des autres utilisateurs, il faut choisir le type
d'antenne et son gain de sorte que la puissance isotrope rayonnée équivalente (p.i.r.e.) ne dépasse pas
l'intensité nécessaire à l'établissement d'une communication satisfaisante.
E. FCC & IC RF Exposure related information
RF Exposure Guidance: This equipment complies with FCC and Industry Canada radiation exposure limits set
forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance
20cm between the radiator and your body. This transmitter must not be co-located or operating in conjunction
with any other antenna or transmitter not described under this FCC ID and IC certification number, except in
accordance with FCC and Industry Canada multi-transmitter product procedures.
Guide d'Exposition RF : ce matériel est conforme aux normes FCC et Industrie Canada relatives aux limites
maximales d'exposition aux radiations en milieu non-contrôlé. Cet équipement doit être installé et opéré à une
distance de plus de 20cm entre la source de radiation et le corps de l'utilisateur. Cet émetteur ne peut être situé
à proximité de ou opérer conjointement avec tout autre émetteur ou toute antenne non-classifiés sous le
numéro de certification FCC ID et IC, sauf s'ils respectent la procédure FCC et Industrie Canada concernant
tout produit multi-émetteurs.
Introduction
Page 9
3Introduction
3.1 About AIS
The marine Automatic Identification System (AIS) is a location and vessel information reporting system. It
allows vessels equipped with AIS to automatically and dynamically share and regularly update their position,
speed, course and other information such as vessel identity with similarly equipped vessels. Position is derived
from GNSS and communication between vessels is by Very High Frequency (VHF) digital transmissions.
There are a number of types of AIS device as follows:
●Class A transceivers. These are designed to be fitted to commercial vessels such as cargo ships
and large passenger vessels. Class A transceivers transmit at a higher VHF signal power than Class
B transceivers and therefore can be received by more distant vessels, they also transmit more
frequently. Class A transceivers are mandatory on all vessels over 300 gross tonnes on international
voyages and certain types of passenger vessels under the SOLAS mandate.
●Inland AIS stations. Similar to Class A transceivers with additional features for use on Inland
waterways.
●Class B transceivers. Similar to Class A transceivers in many ways, but are normally lower cost due
to the less stringent performance requirements. Class B transceivers transmit at a lower power and at
a lower reporting rate than Class A transceivers.
●AIS base stations. AIS base stations are used by Vessel Traffic Systems to monitor and control the
transmissions of AIS transceivers.
●Aids to Navigation (AtoN) transceivers. AIS AtoNs are transceivers mounted on buoys or other
hazards to shipping which transmit details of their location to the surrounding vessels.
●AIS receivers. AIS receivers receive transmissions from Class A transceivers, Class B transceivers,
AIS AtoNs and AIS base stations but do not transmit any information about the vessel on which they
are installed.
This product is an AIS Aid to Navigation (AtoN) transceiver.
Figure 1 The AIS network
Introduction
Page 10
3.2 System overview
This AIS AtoN is a self contained device supporting both Type 1 (transmit only) and Type 3 (transmit and
receive) operation. It is primarily designed for installation in enclosed environments such as buoy equipment
cabinets on physical AtoN structures. The AIS AtoN transceiver can be supplied with an optional Sensor
Interface which interfaces to sensors (such as weather instruments) and transmits measured data via AIS
messages to surrounding vessels and shore stations.
The AIS AtoN has an exceptionally low power consumption making it suitable for installation on floating Aids
to Navigation with solar charged power systems. The lowest power consumption is achieved when operating
as a Type 1 AIS AtoN transmitting only position information. Further description of Type 1 and Type 3 operation
is provided below.
Figure 2 Typical AIS AtoN system
3.2.1 Type 1 AIS AtoN
A Type 1 AIS AtoN is a transmit only device using the FATDMA (Fixed Access Time Division Multiple Access)
access scheme. This requires that the AIS AtoN is configured with fixed AIS time slots in which it will transmit
AIS messages. Mobile AIS stations operating in the area where a Type 1 AIS AtoN is installed need to be aware
of the time slots allocated to the AIS AtoN. The slots allocated to the AIS AtoN are 'reserved' by AIS Base
Station transmissions covering the area in which the AIS AtoN is installed.
This mode of operation therefore requires that an AIS base station is operating in the same area as the AIS
AtoN and is configured to make the necessary slot reservations.
3.2.2 Type 3 AIS AtoN
A Type 3 AIS AtoN has transmit and receive capability and can therefore use either the FATDMA or RATDMA
(Random Access Time Division Multiple Access) access schemes. The RATDMA scheme allows the AIS AtoN
to internally allocate slots for transmission of AIS messages without reservation from an AIS Base Station.
AIS receive capability also allows a Type 3 AIS AtoN to be configured and queried for status via AIS messages
sent from a shore station (known as VDL configuration). An extension of VDL configuration is 'Chaining' where
configuration and query commands are passed along a 'chain' of AIS AtoN stations to a distant station beyond
the range of direct communication with a shore station.
Introduction
Page 11
3.3 Supported AIS messages
The transceiver supports the following AIS message types.
ITU-R
M.1371-4
Message
number
Description
Transmitted /
Received by
AtoN
Transceiver
Application
6Binary addressed message Transmitted
and received
The transceiver uses message 6 to send
binary data (relating to connected
sensors and systems) to a specific shore
station. The transceiver can also receive
addressed binary messages for the
purpose of configuration and control.
7Binary acknowledge message Transmitted
and received
This message is transmitted to
acknowledge receipt of a binary
message. The transceiver can also
receive acknowledgements relating to its
own addressed binary transmissions.
8Binary broadcast message Transmitted
The transceiver uses message 8 to
broadcast binary data (relating to
connected sensors and systems) to all
other AIS stations in range.
12 Addressed safety related
message Transmitted
The transceiver can be configured to
transmit an addressed safety related
message to a specific shore station to
alert the operator to an off position,
vessel proximity or built in test failure
condition.
13
Acknowledgement of received
addressed safety related
message
Received
The transceiver receives message 13 in
acknowledgement of its transmission of
message 12.
14 Safety related broadcast
message Transmitted
The transceiver can be configured to
transmit a broadcast safety related
message to all AIS stations in range to
warn of an off position, vessel proximity
or built in test failure condition.
Introduction
Page 12
20 Data link management message Received
When operating as a Type 3 transceiver
slot reservations made by a shore
station using message 20 will be
observed by the transceiver.
21 Aids to Navigation report Transmitted
This is the primary message transmitted
by the transceiver. It contains the
position, identification and status of the
transceiver.
25 Single slot binary message Transmitted
and received
This message can be used for remote
(over the air) configuration of the
transceiver and configuration of a ‘chain’
of transceivers.
ITU-R
M.1371-4
Message
number
Description
Transmitted /
Received by
AtoN
Transceiver
Application
AIS AtoN product variants
Page 13
4 AIS AtoN product variants
The AIS AtoN transceiver can be operated with or without connection to the optional Sensor Interface product
which is available to purchase separately.
The AIS AtoN transceiver can be configured to operate as either type 1 or type 3 either with or without
connection to the Sensor Interface.
Installation of an AIS AtoN transceiver without connection to a Sensor Interface will limit the functionality of the
installation to transmission of AIS message 21 including the following information:
●Name of AtoN
●Position of AtoN
●Status of AtoN (including AtoN health, Light health and status and RACON status)
Installation without connection to a Sensor Interface is recommended when their is limited power availability
and no requirement for the AIS AtoN to broadcast other information such as meteorological or hydrological
data.
When the AIS AtoN transceiver is installed with a Sensor Interface the capability is extended to enable the
broadcasting of data from connected sensors and systems. However the power consumption of the combined
AIS AtoN transceiver and Sensor Interface will be higher and therefore suited to an installation where power
consumption is less critical.
Type 1 AIS AtoN transceiver without Sensor Interface
Type 1 AIS AtoN transceiver with Sensor Interface
Type 3 AIS AtoN transceiver without Sensor Interface
Type 3 AIS AtoN transceiver with Sensor Interface
A system of icons is used throughout this manual to highlight which AIS AtoN configurations
a particular section, paragraph or illustration applies to. Sections without any icons apply to
all configurations.
!
1
1S
3
3S
Installation
Page 14
5 Installation
The AIS AtoN transceiver has been designed for ease of installation. The transceiver is self contained requiring
only an external VHF antenna, GPS antenna and power source for a basic installation. A typical system and
connection diagram is provided in Figure 3. The AIS AtoN transceiver can be connected to a Sensor Interface
when a more extensive range of sensors and external devices are required as part of the AIS AtoN installation.
Figure 4 shows a typical installation with a Sensor Interface included.
Figure 3 Typical AIS AtoN transceiver system connections
Figure 4 Typical AIS AtoN transceiver and Sensor Interface system connections
The main installation and commissioning steps are:
1. Mount the Transceiver in a suitable location on the physical Aid to Navigation.
2. Install a VHF antenna according to the manufacturers instructions.
3. Install the supplied GNSS antenna.
4. Connect any sensor interfaces and light / RACON monitoring signals.
5. Connect power to the AIS AtoN transceiver and optional Sensor Interface.
6. Configure and commission the AIS AtoN transceiver and optional Sensor Interface via USB (note that
this step can be carried out on shore prior to installation in a remote location).
11S 33S
AIS AtoN
Transceiver
VHF antenna
GPS antenna
Light (optional)
RACON (optional)
12/24V DC supply
PC (Conguration only)
Earth bond
Other sensors and
monitoring equipment
(optional)
AIS AtoN
Transceiver
VHF antenna
GPS antenna
Light (optional)
RACON (optional)
12/24V DC supply PC (Conguration only)
Sensor
Interface
Earth bond
Installation
Page 15
5.1 What’s in the box (AIS AtoN transceiver)
Figure 5 shows the items included with the AIS AtoN transceiver. The following section gives a brief overview
of each item. Please ensure all items are present and if any are missing please contact your supplier.
Figure 5 What’s in the box (AIS AtoN transceiver)
●AIS AtoN transceiver - The AIS AtoN transceiver unit.
●Fixings - Fixing screws for mounting the transceiver to the physical AtoN structure and for connection
of the earth stud to a suitable earth point.
●Power and USB cable - Cable for connection of power and USB.
●USB configuration cable - USB cable for connection to a PC when configuring the transceiver. This
cable mates with the Power and USB cable.
●Support tools CD - CD containing the product manual, transceiver PC configuration and diagnostic
tools (proAtoN).
●Quick Start Guide - A brief introduction to installation and configuration of the AIS AtoN transceiver.
●Backshell connector - Connectors required for making connection to the sensor interfaces as
described in section 6.1.2.
●GPS antenna - GPS antenna and 10m cable.
13
Power and USB cable
Backshell
connector
AIS AtoN Transceiver
Product CD
GPS antenna
USB conguration cable
Quick Start
Guide
Fixings
Installation
Page 16
5.2 What’s in the box (Sensor Interface)
Figure 5 shows the typical items included with the optional Sensor Interface. The following section gives a brief
overview of each item. Please ensure all items are present and if any are missing please contact your supplier.
Figure 6 What’s in the box (Sensor Interface)
●Sensor Interface - The Sensor Interface unit.
●Fixings - Fixing screws for mounting the Sensor Interface to the physical AtoN structure.
●Link cable - Cable for connection of the Sensor Interface to the AIS AtoN transceiver as defined in
section 6.
●USB configuration cable - USB cable for connection to a PC when configuring the Sensor Interface.
●Support tools CD - CD containing the product manual, transceiver PC configuration and diagnostic
tools (proAtoN).
●Quick Start Guide - A brief introduction to installation and configuration of the Sensor Interface.
●Backshell connectors - Connectors required for making connection to the sensor interfaces as
described in section 7.2.
1S
3S
Installation
Page 17
5.3 Preparing for installation
In addition to the items provided with the AIS AtoN transceiver and Sensor Interface the following items will be
required to complete the installation.
5.3.1 Tools and wiring accessories
The following tools and wiring accessories are required for installation:
●Posidriv screwdriver (size PZ2).
●M4 spanner.
●Soldering equipment for wiring of the connectors included (only required if external sensors are
required).
●Suitable multi-core cable for connection of sensor devices via the included backshell connector. The
cable should have a minimum outer diameter of 6.5mm and a maximum outer dimension of 9.5mm. It
is important to select cable which meets this criteria to ensure the assembled cable and connector is
waterproof. Please contact your supplier for recommendations of suitable cable.
●Self amalgamating tape for use with the VHF and GPS connections.
●A mounting pole with a one inch (1”) 14 TPI thread and fixings to screw the supplied GPS antenna
onto.
5.3.2 VHF antenna and cable
Connection of a suitable VHF antenna will be required for the AIS AtoN transceiver to operate. A robust marine
band VHF antenna suited to the environment in which the AtoN will operate should be selected. The antenna
cable should be terminated with a male N type connector. Any joins in the antenna cable should be made with
co-axial connectors and sealed appropriately. It is recommended that RG-213 cable (or equivalent) is used to
connect the VHF antenna. See section 7 for further details.
Suggested models are:
●Shakespeare MD-70
●AC Marine CX4AIS, CELmar0-1AIS, CELmar1-1AIS
●Procomm CXL 2-3LW/hm, CXL 2-1/h-N
5.3.3 PC for configuration
A PC running Windows XP/Vista/7 with at least one USB port is required for configuration of the AIS AtoN
transceiver and Sensor Interface.
Installation
Page 18
5.4 Mounting the AIS AtoN transceiver and Sensor Interface
The AIS AtoN transceiver and optional Sensor Interface can be mounted to a physical aid to navigation using
supplied fixing screws, washers and nuts. The screws are inserted through the four mounting holes on the
product. Refer to Figure 7 for guidance on mounting the AIS AtoN transceiver and Sensor Interface. Overall
dimensions for the AIS AtoN transceiver are provided in Figure 31 and for the Sensor Interface in Figure 32.
Consideration should be given to cable routing and VHF and GNSS antenna location when selecting an
installation location.
Figure 7 Mounting the AIS AtoN transceiver and Sensor Interface
The supplied link cable which connects the AIS AtoN transceiver to the Sensor Interface is
0.5m in length. When using the optional Sensor Interface it is important to locate the Sensor
Interface unit and AIS AtoN transceiver unit close enough for the cable to reach between the
relevant connectors without stressing the cable.
!
Transceiver and Sensor Interface connections
Page 19
6 Transceiver and Sensor Interface connections
6.1 AIS AtoN transceiver connections
The function of each connector is identified in Figure 8.
Figure 8 Transceiver connector locations
6.1.1 Power and USB connector
This connector provides power to the transceiver along with access to the USB port for configuration. To
connect to the AIS AtoN transceiver via USB the USB accessory cable must be connected to the Power/USB
accessory cable. When configuration is complete the USB accessory cable can be disconnected and the
supplied sealing cap fitted to the USB connector on the Power/USB accessory cable.
The transceiver requires a nominal 12VDC or 24VDC supply and will operate between 9.6VDC and 32.6VDC.
The peak current drawn when operating from 12VDC is 3A and when operating from 24VDC is 1.5A. Power
should be connected using the supplied interface connector and cable. It is recommended that 5A rated fuses
are installed in line with the power supply positive and negative connections.
Overall power consumption is dependent on the configuration of the AIS AtoN transceiver messaging and
whether a Sensor Interface is in use. Minimum power consumption figures are provided in section 12.
6.1.2 18 way Link connector
The 18 way Link connector has two functions, only one of which can be used at any time:
1. To provide connection to a Light, RACON and an external NMEA0183 port.
2. To connect to the Sensor Interface via the Link cable supplied with the Sensor Interface.
11S 33S
The supplied sealing cap must be fitted to all unused connections.
!
Link
Power/USB
GPS antenna
VHF antenna
Earth stud
11S 33S
Power connections should be kept as short as possible in order to minimise any reduction in
voltage at the product power supply interface. Cable used to connect power to the supplied
power cable should have conductors with a minimum cross sectional area of 0.75mm2.
!
11S 33S
When the Link connector is used to connect to the Sensor Interface it cannot be used to
connect direct to a light and/or RACON. In this configuration such connections should be
made via the Sensor Interface.
!
Transceiver and Sensor Interface connections
Page 20
6.1.3 Using the 18 way link connector for direct connection of external equipment
When using the Link connector to connect to a Light and/or RACON, the supplied backshell connector should
be wired to suitable cable of the required length. Figure 9 shows the pin numbering and assembly method for
the supplied backshell connector and Table 1 shows the corresponding pin functions.
Figure 9 Pin numbering for the 18 way Link connector
Pin Signal name Function and notes
1 N/C Do not use
2 N/C Do not use
3NMEA0183_TX1_A Connection A of the NMEA0183 TX1 port
4NMEA0183_RX1_A Connection A of the NMEA0183 RX1 port
5NMEA0183_TX1_B Connection B of the NMEA0183 TX1 port
6NMEA0183_RX1_B Connection B of the NMEA0183 RX1 port
7NMEA0183 GND Ground reference for the NMEA0183 port
8 LIGHT_PWR+ Positive ON/OFF connection to an external light
9 LIGHT_PWR- Negative ON/OFF connection to an external light
10 LIGHT_HEALTH+ Positive power connection to an external light health status
11 LIGHT_HEALTH- Negative power connection to an external light health status
12 RACON_STATUS+ Positive status connection to an external RACON
13 RACON_STATUS- Negative status connection to an external RACON
14 N/C Do not use
1
3
The cable should have a minimum outer diameter of 6.5mm and a maximum outer dimension
of 9.5mm. It is important to select cable which meets this criteria to ensure the assembled
cable and connector is waterproof. Please contact your supplier for recommendations of
suitable cable.
!
12
3
7
12
16
4
8
13
17
5
9
14
6
10 11
15
18
Transceiver and Sensor Interface connections
Page 21
Table 1 Pin numbers and functions for the supplied 18 way backshell connector
6.1.4 VHF antenna connector
The VHF antenna connector is a female 'N' type co-axial connector. The antenna ground is galvanically
isolated from the AIS AtoN system ground. The connector and mating half must be sealed with self
amalgamating tape once mated. A lightning protector may be installed in line with the VHF antenna connector.
The recommended lightning protector is Huber+Suhner part number 3401.17.C with gas discharge tube
9071.99.0547.
The VHF antenna should have the following specification:
●Centre frequency 159~162MHz
●VSWR < 2.0
●Impedance 50 Ohms
●Power handling 12.5 Watts
●Gain 3dBi or better
It is recommended that high quality RG213 or RG214 co-axial cable is used to connect the VHF antenna to the
transceiver. The antenna cable should be as short as possible and no more than 30 metres (100 feet) in length.
6.1.5 GNSS antenna connector
The GNSS antenna connector is a female 'TNC' co-axial connector. The connector and mating half must be
sealed with self amalgamating tape once mated.
When installing the supplied GNSS antenna:
●Make sure the antenna has a clear view of the sky with no overhead obstructions.
●Position the antenna as far as possible from any VHF or other transmitting antennas.
●Position the antenna as high as possible on the physical aid to navigation.
15 N/C Do not use
16 N/C Do not use
17 N/C Do not use
18 N/C Do not use
Pin Signal name Function and notes
It is essential that the AIS AtoN transceiver be connected to a local earth point via the earth
stud on the VHF connector.
!
The performance and reliability of the VHF antenna is essential to correct operation of the
transceiver. Ensure that a high quality antenna suitable for use in harsh environmental
conditions is selected. Ensure all co-axial connections are well made and watertight.
!
The VHF antenna should be installed according to the manufacturer's instructions.
!
The VHF antenna must be installed with at least 1 metre horizontal separation from any other
VHF antenna mounted at the same level.
!
Transceiver and Sensor Interface connections
Page 22
6.1.6 Earth connection stud
The earth connection stud is a M5 stud connected to the VHF antenna ground. This point should be connected
to a common grounding point for lightning protection using the supplied crimp terminal, nut and washer.
6.2 Sensor Interface connections
The function of each connector is shown in Figure 10.
Figure 10 Sensor Interface connections
6.2.1 USB connector
The USB connector is used solely to connect the Sensor Interface to a PC for configuration using the supplied
USB accessory cable.
6.2.2 Sensor 1 connector
The Sensor 1 connector can be used to connect sensors and systems to the Sensor Interface. Further details
can be found in section 7.2.
6.2.3 Sensor 2 connector
The Sensor 2 connector can be used to connect sensors and systems to the Sensor Interface. Further details
can be found in section 7.2.
6.2.4 Link connector
The Link connector is used solely to connect the Sensor Interface to the AIS AtoN transceiver via the supplied
Link cable accessory.
Link
Sensor 2
Sensor 1
USB
Connecting external sensors and systems
Page 23
7 Connecting external sensors and systems
The AIS AtoN transceiver can be interfaced to external sensors and systems for the transmission of sensor
data via the AIS network. Typically meteorological and hydrographic sensors are interfaced to the transceiver
so that local conditions can be shared with other AIS users.
The AIS AtoN transceiver can be connected directly to a limited number of external sensors and systems, or
to a more extensive number of sensors and systems via the Sensor Interface. Section 7.1 describes the
interfaces available without connection to the Sensor Interface while section 7.2 describes the interfaces
available when connected to a Sensor Interface.
7.1 Connecting sensors and systems to the AIS AtoN Transceiver
This section describes the interfaces available when the AIS AtoN transceiver is not connected to a Sensor
Interface. In this configuration only the 18 way Link connector is used to connect to external sensors and
systems. The light status, light health and RACON status internal circuits are identical. Figure 11 shows the
internal circuit and examples of possible external circuits.
7.1.1 Light ON/OFF interface
This is an electrically isolated differential interface which monitors the ON/OFF status of the Light providing the
Light used supports this functionality. Additional circuitry may be required to interface the Light status outputs
to the transceiver.
7.1.2 Light health interface
This is an electrically isolated differential interface which monitors the health status of the Light providing the
Light used supports this functionality. Additional circuitry may be required to interface the Light status outputs
to the transceiver.
7.1.3 RACON status interface
This is an electrically isolated differential interface which monitors the status of the RACON providing the
RACON used supports this functionality. Additional circuitry may be required to interface the RACON status
outputs to the transceiver.
1 3
Connecting external sensors and systems
Page 24
Figure 11 Light status/ health and RACON status interface circuits and examples circuits for external equip-
ment
7.1.4 AtoN Status source and configuration
AIS AtoN position report messages (AIS message #21) contain status bits describing the status of a connected
light and RACON. The general health of the transceiver is also provided as either ‘good health’ or alarm. The
transceiver can be configured to obtain status information from one of three sources:
External equipment - example 1
Output-
Output +
Field GND
-
+
Field Power
15VDC Max.
External equipment - example 2
Contact 1
Contact 2
Field GND
Field Power
15VDC Max.
External equipment - example 3
0 / 5V
GND
GND
5V
External equipment - example 4
0 / 12V
GND
GND
12V
GND
To microprocessor
1KΩ
GND
11S33S
Sensor Interface - internal circuit for light status,
light health and RACON status
-
+
-
+
-
+
-
+
Connecting external sensors and systems
Page 25
●Directly from the transceiver interfaces described in section 7.1.
●From the Sensor Interface isolated digital inputs described in 7.2.4.
●By input of an ACE (Extended General AIS AtoN Station configuration command) sentence to the
transceiver's NMEA0813 port. The ACE sentence is described in section 11.2.2. This sentence can
be used to supply the status bits for transmission rather than sourcing from the hardware inputs.
The source of the status information is configured using either proAtoN (see section 8). The following settings
must also be configured using proAtoN:
●Light fitted / not fitted
●Racon fitted / not fitted
●Racon monitored / not monitored
Note that the AIS AtoN ‘health’ bit is generated internally by the transceiver. However, if the ACE sentence is
configured as the source for status information then the AIS AtoN ‘health’ bit is the combination of the internal
transceiver health and the ACE sentence health bit. In this configuration if either the internal transceiver health
or the external health status provided by the ACE sentence is set to ‘1’ (alarm) then the status will be
transmitted as alarm.
7.1.5 NMEA0183 port
The bi-directional NMEA port is available via the 18 way Link connector described in section 6.1.2. This port
accepts and outputs NMEA0183/IEC61162-1 sentences for configuration of the transceiver and
communication of binary message payload data (see section 7) to the transceiver for transmission in AIS
messages. Whilst the transceiver is awake own position reports are also output to this port (as AIVDO
messages) and in the case of a Type 3 transceiver remote vessel reports (as AIVDM messages) are also
output.
The electrical and interface specification for this port is as follows:
●Four wire NMEA0183 / IEC61162-1/2 port (RS422 levels)
●Baud rate 38,400baud
●Isolated receiver circuitry, non-isolated transmitter circuitry
7.2 Connecting sensors and systems to the Sensor Interface
This section describes the interfaces available when the AIS AtoN transceiver is connected to the Sensor
Interface which include:
●Two fully isolated analogue inputs
●Two non-isolated analogue inputs
●A light current sense loop
●Five isolated digital inputs
●Three non-isolated digital inputs / outputs
●A fully isolated RS422 / NMEA0183 port
●Two RS232 ports
●An SDI-12 serial bus interface (one RS232 port is unavailable if this interface is used)
●A relay drive output
Connection to the above sensor interfaces is made via connectors Sensor 1 and Sensor 2 as described in
section 6.2. To make a connection to Sensor 1 and Sensor 2 the supplied backshell connectors should be wired
to suitable cable of the required length. Figure 12 shows the pin numbering and assembly method for the
supplied backshell connector and Table 2 and Table 3 shows the corresponding pin functions.
1S 3S
The cable should have a minimum outer diameter of 6.5mm and a maximum outer dimension
of 9.5mm. It is important to select cable which meets this criteria to ensure the assembled
cable and connector is waterproof. Please contact your supplier for recommendations of
suitable cable.
!
Connecting external sensors and systems
Page 26
Figure 12 Pin numbering for Sensor 1 and Sensor 2 connectors
Table 2 Pin numbers and functions for the Sensor Interface Sensor 1 connector
Pin Signal name Function and notes
1SENSOR_RS422_TX_B Connection B of the RS422 TX port
2SENSOR_RS422_RX_A Connection A of the RS422 RX port
3SENSOR_RS422_TX_A Connection A of the RS422 TX port
4SENSOR_RS422_RX_B Connection B of the RS422 RX port
5SENSOR_RS422_GROUND RS422 ground connection
6SENSOR_RS232_A_TX TX connection for the first RS232 port
7SENSOR_RS232_A_RX RX connection for the first RS232 port
8SENSOR_RS232_B_TX TX connection for the second RS232 port
9SENSOR_RS232_B_RX RX connection for the second RS232 port
10 SENSOR_SDI-12 SDI12 connection
11 GROUND Ground reference for SDI12, RS232 and relay connections
12 SENSOR_NON_ISO_ADC_1_+ Positive connection for non isolating ADC1
13 SENSOR_NON_ISO_ADC_1_- Negative connection for non isolating ADC1
14 SENSOR_NON_ISO_ADC_2_+ Positive connection for non isolating ADC2
15 SENSOR_NON_ISO_ADC_2_- Negative connection for non isolating ADC2
16 ISENSE+ Positive connection for the current sense loop
17 ISENSE- Negative connection for the current sense loop
18 S_RELAY_DR Relay drive output
12
3
7
12
16
4
8
13
17
5
9
14
6
10 11
15
18
Connecting external sensors and systems
Page 27
Table 3 Pin numbers and functions for the Sensor Interface Sensor 2 connector
The following sections describe the hardware specification and interface for the Sensor Interface connections.
The function of the Sensor Interface (in terms of translation of sensor data to AIS messages) is determined by
the software configuration of the AIS AtoN (see section 8.5 for further details). The default configuration and
supported sensors are described in section 9 of this document. For alternate configurations please refer to the
additional documentation supplied with the product or contact your supplier.
7.2.1 Isolated analogue inputs
The extended sensor interface includes two isolated analogue inputs. These inputs are available on the Sensor
2 connector described in Table 3. The electrical and measurement specification of these inputs is as follows:
●Differential input range 0 to 36V
●Impedance 620KΩ
●16 bit resolution
The voltage to be measured should be applied across the differential positive and negative inputs.
7.2.2 Non-isolated analogue inputs
The extended sensor interface includes three non-isolated analogue inputs. These inputs are available via the
Sensor 1 connector described in Table 2. The electrical and measurement specification for these inputs is as
follows:
Pin Signal name Function and notes
1SENSOR_ISO_DI_1+ Positive connection for the isolating digital input 1
2SENSOR_ISO_DI_1- Negative connection for the isolating digital input 1
3SENSOR_ISO_DI_2+ Positive connection for the isolating digital input 2
4SENSOR_ISO_DI_2- Negative connection for the isolating digital input 2
5SENSOR_ISO_DI_3+ Positive connection for the isolating digital input 3
6SENSOR_ISO_DI_3- Negative connection for the isolating digital input 3
7SENSOR_ISO_DI_4+ Positive connection for the isolating digital input 4
8SENSOR_ISO_DI_4- Negative connection for the isolating digital input 4
9SENSOR_ISO_DI_5+ Positive connection for the isolating digital input 5
10 SENSOR_ISO_DI_5- Negative connection for the isolating digital input 5
11 SENSOR_NON_ISO_DI_1 Non isolating digital input 1
12 SENSOR_NON_ISO_DI_2 Non isolating digital input 2
13 SENSOR_NON_ISO_DI_3 Non isolating digital input 3
14 GROUND Ground for digital inputs
15 ISO_ADC1+ Positive connection for the isolating ADC 1
16 ISO_ADC1- Negative connection for the isolating ADC 1
17 ISO_ADC2+ Positive connection for the isolating ADC 2
18 ISO_ADC2- Negative connection for the isolating ADC 2
Connecting external sensors and systems
Page 28
●Differential input range ± 35V
●Impedance 220KΩ
●12 bit resolution
The voltage to be measured should be applied across the differential positive and negative inputs.
7.2.3 Light current sense loop
The extended sensor interface includes a light current sense loop. This facility is intended for health monitoring
of a light on the physical aid to navigation. Connections for the light current sense loop are available via the
Sensor 1 connector described in Table 2. The specification of the current sense loop is as follows:
●Maximum current 2A
●Measurement of currents up to 0.5A
●12 bit resolution
Figure 13 Light current sense loop circuit
7.2.4 Isolated digital inputs
The Sensor Interface includes five isolated digital inputs. These inputs are intended for use with status outputs
from external equipment such as lights, RACONs and power supply monitoring systems. Connections for the
isolated digital inputs are available via the Sensor 2 connector described in Table 3. The specification for these
inputs is as follows:
●Maximum input voltage ±15V
●Input impedance 1KΩ
●Sensitivity 2.5V
Figure 14 shows some examples of possible interface circuits for the isolated digital inputs.
External equipment
to μC
ISENSE+
VIN-
ISENSE-
3V3
GND
VIN+
+
_
LAMP
Connecting external sensors and systems
Page 29
Figure 14 Isolated digital input internal reference circuit and examples of external circuits
External equipment - example 1
Output-
Output +
Field GND
ISO_DI_n-
ISO_DI_n+
Field Power
15VDC Max.
External equipment - example 2
Contact 1
Contact 2
Field GND
ISO_DI_n-
ISO_DI_n+
Field Power
15VDC Max.
External equipment - example 3
0 / 5V
GND
GND
ISO_DI_n-
ISO_DI_n+
5V
External equipment - example 4
0 / 12V
GND
GND
ISO_DI_n-
ISO_DI_n+
12V
ISO_DI_n-
ISO_DI_n+
GND
To microprocessor
1KΩ
GND
11S33S
Sensor Interface - internal circuit
Connecting external sensors and systems
Page 30
7.2.5 Non-isolated digital inputs/outputs
The Sensor Interface includes three non-isolated logic level digital interfaces. When configured as inputs the
signal level must not exceed 3.3VDC referenced to the transceiver signal ground. Connections for the isolated
digital inputs are available via the Sensor 2 connector described in Table 3. Figure 15 shows example interface
circuits for the non isolating digital inputs.
Figure 15 Non-isolated digital input reference circuit and examples of external circuits
7.2.6 Isolated RS422 / NMEA0183 port
The Sensor Interface provides a fully isolated NMEA0183 (RS422 level) serial interface for connection of
external equipment. Connections for the isolated NMEA0183 port are available at the Sensor 1 connector as
described in Table 2. The port operates at 38,400 baud by default. The data types accepted are determined by
the configuration of the sensor interface.
External equipment - example 1
Output-
Output +
DIG_IO_n
GND
10KΩ
3.3V +
External equipment - example 2
Contact 1
Contact 2
DIG_IO_n
GND
External equipment - example 3
0 / 5V
GND
GND
5V
DIG_IO_n
GND
10KΩ
5KΩ
External equipment - example 4
0 / 12V
GND
GND
12V
DIG_IO_n
GND
10K
27K
ACTIVE HIGH
INPUT
PULL-UP
ACTIVE LOW
PULL DOWN
GND
DIG_IO_n
470Ω
3V3
AIS AtoN Sensor Interface internal reference circuit
NOTE:
Sensor DIG_IO pins are default set as oating inputs.
Other congurations are possible- contact your distributor
for more information.
10KΩ
3.3V +
Connecting external sensors and systems
Page 31
7.2.7 RS232 ports
The extended sensor interface provides two non-isolated RS232 interfaces for connection of external
equipment. These ports are available via the Sensor 1 connector described in Table 2.
The port operates at 38,400baud by default. The data types accepted are determined by the configuration of
the sensor interface.
RS232 port 2 shares hardware with the SDI-12 interface described in section 7.2.8 and is not available if the
SDI-12 interface enabled by configuration.
7.2.8 SDI-12 interface
The extended sensor interface provides an SDI-12 for interface to external sensors supporting this bus. The
SDI-12 interface is available via the Sensor 1 connector as described in Table 2. The Sensor Interface operates
as an SDI-12 data recorder. The electrical interface consists of three connections:
●A serial data line
●A ground line
●A 12-volt line (used to power connected sensors)
For further information on the SDI-12 interface please refer to the specification available at
http://www.sdi-12.org/. Note that the 12V supply line is not provided by the sensor interface.
7.2.9 Relay drive output
The extended sensor interface provides an open drain relay drive outputs that default to the normally open
state. The outputs are capable of switching 100mA at 12VDC or 50mA at 24VDC; a circuit diagram of the output
driver is provided in Figure 16. The relay drive output is available via the Sensor 1 connector as described in
Table 2..
Figure 16 Relay drive output reference circuit
7.2.10 Input voltage monitor
The Sensor Interface has the facility to measure the incoming power supply voltage. This can be used to
provide a measurement of the charge state of a battery supply to the transceiver. The voltage measured can
be included in transmitted AIS measurements if so configured. No additional connections are required in order
to make use of this facility.
From processor
RELAY_DRIVE
10K
100R
GND
GND
BSP75NTA
Configuration using proAtoN
Page 32
8 Configuration using proAtoN
The proAtoN PC application is supplied on the CD packaged with the AIS AtoN transceiver and the Sensor
Interface. The application provides features for configuration of the transceiver and confirming correct
operation before deployment. The main features of the application are:
●Configuration of essential transceiver parameters such as MMSI, name and dimensions
●Configuration of reporting schedules
●Configuration of virtual and/or synthetic AtoN reporting schedules
●Configuration of other messaging features
●GNSS diagnostics
●System diagnostics and alarm display
●Configuration of the source for external equipment status information
●VDL configuration (for further information contact your distributor)
●Configuration of sensor interfaces
proAtoN operates in two modes: transceiver configuration mode and sensor configuration mode. proAtoN
automatically switches between transceiver configuration mode and sensor configuration mode depending on
the serial port selected at the point of COM port selection as described in section 8.2.
8.1 proAtoN installation
proAtoN should be installed from the CD supplied with the transceiver. The steps to complete the installation
are as follows:
1. Insert the CD into your PC running Windows (XP, Vista, 7)
2. Navigate to the proAtoN folder on the CD
3. Double click the ‘setup.exe’ item to start the installation process
4. Follow on screen instructions to complete the installation
Following successful installation the application can be launched from the proAtoN folder in the Windows start
menu.
USB device drivers for the transceiver are installed automatically during installation of proAtoN.
11S 33S
Configuration using proAtoN
Page 33
8.2 Application layout
The basic layout of the proAtoN application is provided in Figure 17.
Figure 17 proAtoN application layout
8.2.1 COM Port selection
When connected via USB, the COM ports associated with the AIS AtoN transceiver and Sensor Interface will
be listed in the COM port selection menu.
●To operate proAtoN in transceiver configuration mode (type 1, 1S, 3 3S) select the ‘AIS AtoN Port’
option from the drop down and click the ‘Connect’ button.
●To operate proAtoN in sensor configuration mode (type 1S and type 3S only) select the ‘AIS AtoN
Sensor Port’ and click the ‘Connect’ button.
8.2.2 Read / Write configuration
Clicking the left hand button will transfer current configuration information from the AIS AtoN transceiver or
Sensor Interface to proAtoN.
Clicking the right hand button will configure the AIS AtoN transceiver or with the information currently displayed
in proAtoN.
It is possible to select transfer of configuration information relating only to the currently selected tab, or to all
tabs by clicking the drop down arrow to the right of each button. The default operation for each button is to read
or write data relating to the selected tab only. It is highly recommended that prior to deploying the AtoN the
“Send all Configuration” option is used on the write button.
8.2.3 Transceiver configuration mode tabs
The configuration and status of the transceiver is displayed through a number of tabs.
●Real AtoN tab - configuration of AtoN MMSI, name, type, dimensions, position and radio parameters.
●Message schedule tab - configuration of FATDMA or RATDMA message schedules.
COM Port selection
Read / Write conguration
Conguration tabs
Status bar
Configuration using proAtoN
Page 34
●Virtual AtoN tab - configuration of virtual and/or synthetic AtoN transmissions.
●Status input tab - configuration of the source for AtoN status information.
●Alert messages tab - configuration of non-periodic messages (e.g., vessel proximity alert
messages).
●GNSS - displays signal strength and status information for the transceiver GNSS receiver.
●Serial data - displays raw IEC61162 (NMEA0183) data output from the transceiver.
●Diagnostics - displays software version information, alarms and other key status information.
8.2.4 Sensor configuration mode tabs
●Sensor Settings - configuration of sensor combination connected to the AIS AtoN.
●ADC Settings - configuration of ADC scaling.
●Message Settings - configuration of message 6 and message 8.
●System Information - current configuration status and digital input status.
●Live Data - real time data feed from the ADC, Wavemeter and sensor DI status.
8.2.5 Synchronisation status
When connected to a AIS AtoN transceiver or Sensor Interface a synchronisation status icon is displayed
alongside the title of each tab. This icon indicates the current synchronisation status of the information
displayed in that tab with the internal configuration of the AIS AtoN transceiver or Sensor Interface. The
synchronisation status icons are shown in Figure 18.
Figure 18 proAtoN tab synchronisation icons
Synchronisation is achieved by either writing the configuration displayed in proAtoN to the AIS AtoN transceiver
or Sensor Interface (click the write configuration button), or reading the current configuration from the
transceiver for display in proAtoN (click the read configuration button).
8.2.6 Status bar
The status bar displays the current connection status of the application (bottom left) and the current GNSS time
(if available, bottom right). This applies to transceiver configuration mode only.
8.3 AIS AtoN transceiver configuration
The following sections describe the configuration options available and their effect on the behaviour of the
transceiver. Configuration of an AIS AtoN transceiver requires knowledge of the local AIS environment and
may require interaction with shore infrastructure. Familiarity with the current IALA guidelines on the use of AIS
Aids to Navigation (IALA A-126) is assumed.
8.3.1 Configuration of ‘Real’ AtoN parameters
The following parameters associated with the ‘real’ AIS AtoN transceiver should be configured via the ‘Real
AtoN’ tab:
Green - Tab synchronised
Red - Tab not synchronised
Blue - Synchronisation in progress
Tab edited (sync required)
Configuration using proAtoN
Page 35
●MMSI - the MMSI number associated with the ‘real’ AtoN. Typically the MMSI number for a ‘real’ AtoN
station follows the format 99MID1XXX where MID is the appropriate national MID and XXX is a
number unique to this station.
●Name - the name of the AtoN station as broadcast to other AIS users. Up to 34 characters are
available for the name.
●Type of AtoN - select from a list of possible types of AtoN. The types are as defined by IALA in IALA
A-126.
●Type of EPFS - Select the type of EPFS (Electronic Position Fixing System) used by the transceiver.
Note this selection does not affect the hardware configuration, only the contents of the ‘Type of EPFS’
field in transmitted AtoN position reports. The transceiver is equipped with a GPS module by default.
Alternatively for a fixed or shore based transceiver a surveyed position type can be selected. Note
that when the surveyed position is selected the surveyed position is broadcast to other AIS users and
GNSS position information is ignored.
●Nominal position - Enter the nominal or charted position of the AtoN. This is the position transmitted
to other AIS users for a fixed AtoN when the ‘Surveyed’ EPFS type is selected. For all other
configurations this position is used to perform ‘off position’ calculations only; the actual GNSS position
is broadcast to other users.
○The application can average the current GNSS position over 5 minutes and use this value for the
nominal position. Click the ‘Get GNSS position’ button to the right of the latitude and longitude
fields to begin this process.
○The position accuracy can only be entered when the type of EPFS is set to ‘Surveyed’. The
accuracy should be set in accordance with the accuracy of the surveyed position.
●Off position alternate message enable - the current GNSS position is compared to the nominal
position according to the algorithm defined in IALA A-126 Annex A, Example 1. The off position
threshold distance is specified in metres. If the transceiver determines that it is ‘off position’ then the
alternate reporting schedule for message #21 (index 2) is enabled. For example, the alternate
reporting schedule could be configured to decrease the reporting interval if the AtoN has drifted off
position. The off position flag in message #21 is set when off position regardless of this setting.
The transceiver off position algorithm is always operational and compares the current GNSS position
to the nominal position of the transceiver.
●MMSI for addressed messages - this is the destination MMSI used for all addressed message types
generated by the transceiver. This is usually the MMSI of a shore station collecting status information
from the transceiver. It is also possible to enable the acknowledgement of received binary messages
(via message #7 or #13).
●Dimensions - the dimensions of the AtoN should be entered to the nearest metre. Guidance on the
appropriate configuration of dimensions for various types of AtoN can be found in IALA A-126.
●Radio channels - Selection of alternative radio channels for AIS transmission and reception is
possible, however in most cases the default channels (AIS1 and AIS2) should be used.
●Transmitter power level - The transmitter power level for the transceiver can be selected as 1W, 2W,
5W or 12.5W. The default value of 12.5W is appropriate for most scenarios.
It is essential that valid nominal position is entered and that a reasonable off position
threshold is entered. If the default nominal is left unchanged or an incorrect position is
entered then the transceiver will always be ‘off position’ resulting in the GNSS receiver being
permanently enabled. This will lead to significantly increased power consumption and the ‘off
position’ flag in the Aids to Navigation report will be set.
!
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8.3.2 Message schedule configuration
The layout of the message schedule tab is described in Figure 19.
Figure 19 proAtoN message schedule tab layout
Default messages
An AIS AtoN position report is made using AIS message #21. This message occupies two AIS slots. The
default configuration shown in proAtoN includes two message #21 schedule configurations. The first
configuration, index 1, is the primary position reporting schedule for the transceiver. The second, index 2, is
the alternate position reporting schedule selected when the ‘off position’ monitor is enabled and the AtoN is
determined to be off position (see section 8.3.1). If the alternate ‘off position’ schedule is not required it can be
deactivated by selecting the associated row in the message schedule table and clicking the ‘Deactivate’ button.
When deactivated the alternate schedule will be greyed out.
Adding additional messages to the schedule
Additional binary data messages can be added to the schedule table by selecting the required message type
from the drop down at the top of this tab, then clicking the ‘Add’ button. The available message types are:
●Message #8 - for broadcast of binary data to all other stations in range. The binary data may be
provided by the Sensor Interface or third party equipment connected to the transceiver. See section 9
for further information.
●Message #6 - for transmission of binary data to an individual destination MMSI. The destination MMSI
is set on the ‘Real AtoN’ tab. The binary data may be provided by the Sensor Interface (if present) or
third party equipment connected to the transceiver. See section 9 for further information.
●Message #12 - for transmission of text messages to an individual destination MMSI. The destination
MMSI is set on the ‘Real AtoN’ tab. This schedule is used for transmission of alert messages (see
section 8.3.7).
●Message #14 - for broadcast of text messages to all other stations in range. This schedule is used for
transmission of alert messages (see section 8.3.7).
Up to four separate schedules are available for each binary message type. Each individual schedule has an
index from 1 to 4 which is used to identify that schedule (for example, message #8 index 2).
Access scheme selection
The access scheme for each message must be selected as either FATDMA or RATDMA (see section 3.2). The
selection is made by selecting the required row in the schedule table, then clicking on the current access
scheme in that row. A drop down menu will then appear in that location allowing selection of the required
access scheme.
Add new message
schedules
Current messages
and schedules
Deactivate or remove
selected schedule
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●FATDMA
Configuration of an FATDMA schedule continues in section 8.3.3.
●RATDMA
Configuration of an RATMDA schedule continues in section 8.3.4.
8.3.3 FATDMA Schedule configuration
Using the FATDMA (Fixed Access TDMA) access scheme the actual slot for each transmission made by the
transceiver is specified. There are 2250 slots per minute (or frame) on each AIS channel. The scheduled slots
must be reserved for the transceiver by an AIS base station operating in the same area using AIS message
#20. Further information on FATDMA reservations and slot allocation schemes can be found in IALA A-124,
Appendix 14.
The parameters required for an FATDMA schedule are as follows.
Channel 1 start UTC
This is the hour and minute for transmission on channel 1. This specifies the AIS frame (minute) within a day
in which the start slot for channel 1 resides.
Channel 1 start slot
This is the slot number for the first transmission on channel 1. The slot number can range from -1 (transmission
disabled on this channel) to 2249. Note that each message #21 transmission occupies two slots and associated
base station slot reservations must therefore reserve two slots.
Channel 1 interval
This is the interval in slots between transmissions on channel 1. The interval can range from 0 to 3240000 slots,
which equates to an interval of one day. Typically the interval is set to 13500 slots (6 minutes) on each channel
which results in an overall interval of 3 minutes.
Channel 2 start UTC
This is the hour and minute for transmission on channel 2. This specifies the AIS frame (minute) within a day
in which the start slot for channel 2 resides. Typically the channel 2 start time is offset by 3 minutes from the
start time used for channel 1. With a 6 minute reporting interval on each channel this results in a transmission
every 3 minutes on alternating channels.
Channel 2 start slot
This is the slot number for the first transmission on channel 2. The slot number can range from -1 (transmission
disabled on this channel) to 2249. Note that each message #21 transmission occupies two slots and associated
base station slot reservations must therefore reserve two slots.
Channel 2 interval
This is the interval in slots between transmissions on channel 2. The interval can range from 0 to 3240000 slots,
which equates to an interval of one day. Typically the interval is set to 13500 slots (6 minutes) on each channel
which results in an overall interval of 3 minutes.
11S 33S
33S
11S 33S
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Example FATDMA schedule
A typical transmission schedule requires that the AIS AtoN transceiver transmit AIS message #21 every three
minutes on alternating channels. The transmission schedule is presented diagrammatically in Figure 20.
Figure 20 Example FATDMA schedule
This schedule can be configured using the following values:
●Channel 1 start UTC = 00:00 (the first frame of every hour)
●Channel 1 start slot = 0 (the first slot in the frame, so slots 0 and 1 are used by the message #21
transmission)
●Channel 1 interval = 13500 slots (this equates to a 6 minute interval as there are 2250 slots per
minute)
●Channel 2 start UTC = 00:03 (the third frame of every hour)
●Channel 2 start slot = 0 (the first slot in the frame, so slots 0 and 1 are used by the message #21
transmission)
●Channel 2 interval = 13500 slots (this equates to a 6 minute interval as there are 2250 slots per
minute)
The transceiver is now configured to report message #21 on channel 1 every 6th minute, and on channel 2
every 6th minute, but offset by three minutes from channel 1. This results in a transmission of message #21
every three minutes on alternating channels. The actual start slot selected for each channel will depend on the
FATDMA allocations in the area of operation.
8.3.4 RATDMA Schedule configuration
Using the RATDMA (Random Access TDMA) access scheme the time for each transmission made by the
transceiver is specified. The transceiver will determine the actual slots used for transmission based on internal
knowledge of the AIS environment gained from the AIS receivers.
The parameters required for an RATDMA schedule are as follows.
Channel 1 start UTC
This is the hour and minute of the frame in which transmission will occur on channel 1. The slot used within this
frame will be determined by the transceiver.
Channel 1 interval
This is the interval in minutes between transmissions on channel 1. A typical value is 6 minutes.
Channel 1
00:01
00:02
00:03
00:04
00:05
00:06
00:07
00:08
00:09
00:10
00:11
00:12
00:00
hh:mm
Channel 1 interval
13500 slots (6 minutes)
Channel 2
00:01
00:02
00:03
00:04
00:05
00:06
00:07
00:08
00:09
00:10
00:11
00:12
00:00
hh:mm
Channel 2 interval
13500 slots (6 minutes)
Overall interval
7500 slots
(3 minutes)
33S
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Channel 2 start UTC
This is the hour and minute of the frame in which transmission will occur on channel 2. The slot used within this
frame will be determined by the transceiver.
Channel 2 interval
This is the interval in minutes between transmissions on channel 1. A typical value is 6 minutes.
Example RATDMA schedule
A typical transmission schedule requires that the AIS AtoN transceiver transmit AIS message #21 every three
minutes on alternating channels. The transmission schedule is presented diagrammatically in Figure 21.
Figure 21 Example RATDMA schedule
This schedule can be configured using the following values:
●Channel 1 start UTC = 00:00 (the first minute of every hour)
●Channel 1 interval = 6 minutes
●Channel 2 start UTC = 00:03 (the third minute of every hour)
●Channel 2 interval = 6 minutes
The transceiver is now configured to report message #21 on channel 1 every 6th minute, and on channel 2
every 6th minute, but offset by three minutes from channel 1. This results in a transmission of message #21
every three minutes on alternating channels. The exact timings of the transmissions within the selected minute
will vary as the transceiver selects available slots using RATDMA.
Channel 1
00:01
00:02
00:03
00:04
00:05
00:06
00:07
00:08
00:09
00:10
00:11
00:12
00:00
hh:mm
Channel 1 interval
6 minutes
Channel 2
00:01
00:02
00:03
00:04
00:05
00:06
00:07
00:08
00:09
00:10
00:11
00:12
00:00
hh:mm
Channel 2 interval
6 minutes
Overall interval
(3 minutes)
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8.3.5 Virtual AtoN configuration
The transceiver can be configured to transmit position reports for up to five virtual or synthetic Aids to
Navigation. This configuration is carried out using the Virtual AtoN(s) tab in proAtoN. Within this tab there are
sub-tabs relating to each of the five virtual or synthetic AtoNs. The sub-tabs are visible at the left hand edge of
the window. The layout of the virtual AtoN configuration tab is provided in Figure 22.
Figure 22 Virtual AtoN configuration tab layout
The following parameters are required to configure a virtual or synthetic AtoN. Note that the ‘real’ AtoN must
be properly configured in order to make use of the virtual AtoN feature.
Virtual / Synthetic AtoN
Each virtual AtoN required must be separately enabled by checking the ‘Enable’ checkbox. The type of virtual
AtoN can then be selected.
●Virtual AtoN
A virtual AtoN is transmission of message #21 for an Aid to Navigation that does not physically exist.
A virtual AtoN may be used to mark a temporary hazard to navigation, e.g., a wreck. For further
information on the use of virtual AtoNs please refer to IALA A-126, IALA O-143 and IALA guideline
1081.
●Synthetic AtoN
A synthetic AtoN is transmission of message #21 from an AIS station located remotely from the
physical Aid to Navigation. An example of use is to provide an AIS AtoN target for a buoy or mark that
is not capable of supporting AIS AtoN hardware.
Virtual / Synthetic AtoN Details
The basic configuration of a virtual or synthetic AtoN is comparable to that required for a ‘real’ AIS AtoN. Note
that the MMSI number format is different:
●A virtual AtoN MMSI has the format 99MID6XXX, where MID is the appropriate national MID and XXX
is a number unique to this station.
●A synthetic AtoN MMSI has the same format as a real AtoN MMSI, e.g., 99MID1XXX, where MID is
the appropriate national MID and XXX is a number unique to this station.
The position of the virtual or synthetic AtoN must be configured appropriately to the position of the aid. Note
that a virtual AtoN has no dimensions whereas the dimensions of a synthetic AtoN should be configured.
Enable virtual AtoN
and select type
Virtual AtoN subtabs
Virtual AtoN details
Virtual AtoN schedule
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Virtual AtoN schedule
The transmission schedule for a virtual or synthetic AtoN must be configured in the same way as that for the
‘real’ AtoN. The TDMA access scheme, start times and intervals must be configured in the virtual AtoN tab
following the guidance in section 8.3.3 or 8.3.4 as appropriate. When an FATDMA schedule is used it is
important to ensure the slot allocations used for the virtual and real AtoNs are different in every case. Also note
that two consecutive slots are used for each virtual AtoN report.
8.3.6 Status input configuration tab
AIS AtoN position reports (message #21) contain status information encoded as a bit sequence. The status
bits contain the basic operational state of a connected light and RACON along with the overall health of the
transceiver itself. Connection of a light and/or RACON is optional and requires equipment with a suitable health
output. Interfacing of light and RACON status is described in sections 6.1.3, 7.1.4 and 7.2.4.
The status information can be obtained from one of three sources as described in section 7.1.4. The status
input configuration tab is used to set the source and other associated parameters. The layout of the status input
configuration tab is provided in Figure 23.
Figure 23 Status input configuration tab layout
Current status (message 21)
This section shows the current light and RACON status determined by the transceiver. The transceiver must
be connected and powered from a DC supply in order for this display to operate correctly.
Light & RACON configuration
This section allows the fixed parameters of the light and RACON to be configured. The check boxes should be
set according to the physical configuration. For example if a light status output is connected to the transceiver
then the ‘Light fitted’ check box should be checked. If a RACON is connected it is also possible to define if the
RACON is monitored or not.
Status bit source
Select the source for the status information to match the method used to provide status information to the
transceiver (this is described in section 7.1.4).
Status bit logic
The logical sense of the physical status bit inputs can be set here. This allows for interface of equipment with
active high or active low status outputs.
Current status display
(when connected to transceiver)
Set xed status as installed
Set status bit source
Set status input logic
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8.3.7 Alert messages
The transceiver can be configured to transmit text messages for three different alert conditions.
●An addressed or broadcast text message can be transmitted when the transceiver detects a Built In
Integrity Test (BIIT) failure.
●An addressed text message can be transmitted to an approaching vessel if the vessel comes within a
configurable distance of the transceivers location. This function is only available with Type 3 variants
and with full time receiver operation.
●An addressed or broadcast text message can be transmitted when the transceiver determines that it
is off position (see section 8.3.1). This message is in addition to use of the alternate schedule for off
position reporting (if the alternate schedule is enabled) and does not replace that function.
The layout of the alert messages configuration tab is provided in Figure 24.
Figure 24 Alert messages configuration tab layout
BIIT failure actions
This section allows configuration of the text message to be transmitted on detection of a Built In Integrity Test
failure (BIIT failure). Such a failure may indicate a problem with the transceiver and it may be prudent to warn
vessels not to rely on the information provided by the transceiver in this situation. Note that the health of the
transceiver is always transmitted as part of the standard Aids to Navigation position report (message #21),
however the status contained in that message may not be shown on all display systems.
The available actions on BIIT failure are:
●No action - no message is transmitted on detection of a BIIT failure.
●Transmit message #14. A broadcast text message is transmitted on detection of a BIIT failure. The
text content of the message must be defined in the ‘Message text’ box.
●Transmit message #12. An addressed text message is transmitted on detection of a BIIT failure. The
destination for the addressed message is configured on the ‘Real AtoN’ tab (see section 8.3.1).
In addition to configuration of the BIIT failure action a schedule for the associated message must be configured
in the ‘Message schedule’ tab.
●Message #14 Index 1 must be configured if the message #14 action is selected.
●Message #12 Index 1 must be configured if the message #12 action is selected.
Vessel proximity alert
This section allows configuration of the text message to be transmitted on detection of vessel breaching a
defined radius (or guard ring) around the transceiver. This message can be used to warn approaching vessels
of potential collision with the AtoN. The addressed message is automatically sent to all vessels that breach the
guard ring radius.
Congure BIIT failure
message action
Congure vessel
proximity alert action
Congure additional
o position alert action
Congure SART
Relay Mode
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The available vessel proximity alert actions are:
●Disable message #12 - the vessel proximity alert function is disabled
●Enable message #12 - the function is enabled and the text content of the message to be transmitted
must be defined in the ‘Message text’ box. The guard ring radius for the proximity alert must also be
configured in the ‘Radius’ box; note that the value is set in metres.
In addition to configuration of the vessel proximity alert a schedule for the associated message must be
configured in the ‘Message schedule’ tab.
●Message #12 Index 2 must be configured if the message #12 action is selected.
Off position alert
This section allows configuration of the text message to be transmitted when the transceiver detects that it is
off position. The settings for off position detection are made on the ‘Real AtoN’ tab (see section 8.3.1). The
configuration of an alternative off position message #21 reporting schedule is independent of the configuration
of this text alert.
The available off position alert actions are:
●Disabled - no text message is transmitted when the transceiver determines that it is off position.
●Transmit message #14. A text message is broadcast when the transceiver detects that is off position.
The text content of the message must be defined in the ‘Message text’ box.
●Transmit message #12. An addressed text message is transmitted on detection of an off position
condition. The destination for the addressed message is configured on the ‘Real AtoN’ tab (see
section 8.3.1).
In addition to configuration of the off position alert a schedule for the associated message must be configured
in the ‘Message schedule’ tab.
●Message #14 index 2 must be configured if the message #14 action is selected
●Message #12 index 3 must be configured if the message #12 action is selected
SART Relay Mode
This control enables or disables the repeating of SART (Search and Rescue Transponder) messages detected
by the AIS AtoN. This functionality is only relevant to Type 3 devices as receivers are required to detect the
messages.
8.4 Transceiver diagnostics
The proAtoN application provides a number of features to assist with installation of an AIS AtoN and diagnosis
of fault conditions. These features are available through the GNSS, Serial Data and Diagnostics tabs in
proAtoN.
8.4.1 GNSS tab
The GNSS tab shows the status of the GNSS receiver built into the transceiver. This provides an indication of
the quality of the GNSS satellite signals being received along with the current position of the transceiver.
At least four satellites with a carrier to noise ratio in excess of 40 dBHz are required for an acceptable position
fix. Relocating the transceiver or connecting an external GNSS antenna can help improve the signal quality
and resulting position accuracy.
The internal GNSS receiver supports SBAS (Satellite Based Augmentation Service) to enable improved
accuracy and integrity of GNSS position fixes. The availability of SBAS depends on the installation location of
the transceiver (the WAAS SBAS service covers most of the US and the EGNOS service covers Europe).
8.4.2 Serial data tab
The serial data page shows all data output from the transceiver in NMEA0183 / IEC61162-1 format. It is also
possible to send NMEA0183 / IEC61162-1 commands to transceiver if required for technical support or custom
configuration. A facility to record the data to a file is provided by clicking the ‘Log to File’ button.
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Certain sentence types can be filtered out of the output window by checking the relevant sentence type in the
‘Filters’ section of this tab.
8.4.3 Diagnostics tab
The Diagnostics tab provides system version and status information. This information may be required when
requesting technical support for the product.
AtoN Details
●The connected AIS AtoN Type is displayed as Type 1 or Type 3
●The application and bootloader software versions for the connected AIS AtoN are displayed
●The serial number of the connected AIS AtoN is displayed
Power status
●The VHF antenna VSWR (Voltage Standing Wave Ratio) as measured at the last AIS transmission is
displayed. This value is for indication only. A value better than 3:1 is expected for a good antenna
system. The alarm limit for antenna VSWR is set to 5:1. A perfect antenna would give a VSWR of 1:1.
●The system supply voltage is displayed in volts. The supply voltage must be between 9.6V and 32.6V
for correct operation. The supply voltage alarm will activate outside of this supply voltage range.
Report generation
Clicking the ‘Create Diagnostics Report’ button will produce full report of the transceiver status. This report may
be requested by technical support personnel. After clicking the button select a suitable file name and location
for the report file before clicking save.
Reported messages
During operation the transceiver will output a variety of status messages relating to the current operating state.
These messages are for information only and do not represent a fault condition.
Message text Description / Resolution
TX attempt failed
(msg 6 no payload re-broadcast
data)
A transmission of message #6 has failed as the payload data
required for this message was not provided (by either the
Sensor Interface, or an external system). The likely cause is a
configuration error relating to data capture.
TX attempt failed
(msg 8 no payload re-broadcast
data)
A transmission of message #8 has failed as the payload data
required for this message was not provided (by either the
Sensor Interface, or an external system). The likely cause is a
configuration error relating to data capture.
TX attempt failed
(msg 12 no payload re-broadcast
data)
A transmission of message #12 has failed as the payload
data required for this message was not provided (by either
the Sensor Interface, or an external system). The likely cause
is a configuration error relating to data capture.
TX attempt failed
(msg 14 no payload re-broadcast
data)
A transmission of message #14 has failed as the payload
data required for this message was not provided (by either
the Sensor Interface, or an external system). The likely cause
is a configuration error relating to data capture.
Standby blocked: Off position
algorithm
The transceiver can’t enter standby (low power) mode
because the ‘off position’ algorithm has detected an off
position condition. Moving the transceiver within the
configured operating radius will resolve this.
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Active alarms
The transceiver incorporates BIIT (Built In Integrity Test) routines which continuously monitor key operating
parameters. Should an integrity test fail the failure will be indicated in the active alarms area.
Standby Blocked: Acquiring GPS
The transceiver can’t enter standby (low power) mode
because it is currently acquiring a GNSS position fix. Standby
operation will resume when a fix is acquired.
Standby disabled Standby mode (low power operation) is disabled by
configuration.
Standby Blocked: USB connected The transceiver will not enter standby (low power) mode
whilst the USB interface is connected to a PC.
Standby Blocked: Shell running The transceiver will not enter standby (low power) mode
whilst the configuration shell is active.
Standby Blocked: Receivers
enabled
The transceiver can’t enter standby mode if the current
configuration requires that the receivers are active.
Exiting standby Information only on exit of standby mode.
Entering standby for xx seconds Information only on entry to standby mode.
Alarm text Description / Resolution
Tx Malfunction A transmitter malfunction has been detected - please
contact your supplier.
Antenna VSWR exceeds limits
The VHF antenna VSWR is above the permitted limit.
Check the VHF antenna, cable and connections are
sound. The VSWR measured at the last transmission
is displayed on the proAtoN diagnostics tab.
Rx Channel 1 malfunction A receiver malfunction has been detected - please
contact your supplier.
Rx Channel 2 malfunction A receiver malfunction has been detected - please
contact your supplier.
EPFS failure No position is available from the internal GNSS
receiver - please contact your supplier.
DGNSS input failed
No data is available from the external source of
differential GNSS correction data. Please check
connections, baud rate and equipment configuration.
Supply voltage
The transceiver power supply voltage is outside of the
permitted range. The measured supply voltage is
displayed on the proAtoN diagnostics tab.
Low forward power The transmitter forward power is below a preset limit -
please contact your supplier.
Synchronisation lost Timing information is not available from the internal
GNSS receiver - please contact your supplier.
Message text Description / Resolution
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8.5 Sensor configuration
The sensor configuration tabs are displayed when the sensor port is selected in the COM Port selection menu.
Five tabs are displayed in this mode; 'Sensor Settings', 'ADC Settings', 'Message Settings', 'System
Information' and 'Live Data'. Details for each of these tabs are given in the following sections. Where necessary
reference is made to the underlying command from which details of the control behaviour can be found.
8.5.1 Sensor settings
This tab displays controls as appropriate to the configuration set. It is necessary to download this information
from the Sensor Interface. Connect to the sensor port and use the 'Retrieve all Configuration' control to retrieve
the information. The opening screen contains a message to this effect (see Figure 25). On retrieving the
information the screen will change to show the controls for the sensor configuration in use (see Figure 26).
Figure 25 Initial sensor settings tab
Figure 26 Sensor settings tab
3S
1S
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8.5.2 ADC settings tab
This tab contains controls for the light current sense and ADC scaling parameters. There are three groups of
controls on this tab; 'Light Current Sense', Current Sense ADC Scaling' and 'Voltage Measurement Scaling'
(see Figure 27).
Figure 27 ADC settings tab
Light Current Sense group
Checking the 'Enable Current Sense' box will enable the controls listed below. The function of each control can
be found in the corresponding command details.
●Current Sense Threshold (see 'isensethresh' in Table 6)
●Current Sense Source (see 'altisource' in Table 6)
●Light On Source (see 'lightonsource' in Table 5)
Current Sense ADC Scaling
These controls allow the setting of the scaling parameters for the two current sense sources. Details for these
parameters can be found in section 10.2.7. The underlying commands are 'setisensescale' and
'setaltisensescale' detailed in Table 6. Switching between these two sources is controlled by the Current Sense
Source control in the Light Current Sense group box above.
Voltage Measurement Scaling
These controls allow setting of the scaling parameters for the two voltage measurement sources. Details for
these parameters can be found in section 10.2.7. The underlying commands are 'setvoltscale' and
'setaltvoltscale' detailed in Table 6. Switching between these two sources is controlled by the Voltage
Measurement Source control of the Message Settings tab.
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8.5.3 Message settings tab
The message settings tab, shown in Figure 28 contains controls related to message #6 and message #8
payloads. The control groups are based on these message types.
Figure 28 Message settings tab
Message #6 Configuration
This group contains controls for:
Message #6 type (see 'msg6ver' in Table 4)
Voltage Threshold For Battery Status (see 'voltthresh' in Table 5)
Voltage Measurement Source (see 'voltsource' in Table 6)
Power Supply Type (see 'pwrtype' in Table 5)
Message #6 Sub ID (see 'msg6subid' in Table 5)
Message #6 DAC (see 'msg6dac' in Table 5)
Message #6 FI (see 'msg6fi' in Table 5)
Message #8 Configuration
This group contains a single control for selecting the message #8 type (see 'msg8ver' in Table 4).
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8.5.4 System information
This tab displays data from the Sensor PCA. There are three groups of data; System Information, Digital Input
Status and Sensor Health. See Figure 29 below.
Figure 29 System information tab
System Information
This section displays the Software Version, Serial Number and details of the current configuration. The
underlying command is 'showvalues' (see Table 4). This section is update using the 'Retrieve All Configuration'
control.
Digital Input Status
This section displays the current status of each of the Sensor Interface’s digital inputs. The data can be
refreshed using the related 'Refresh' button. The underlying command is 'getdistates' (see Table 4). Note that
this data is taken from the current state of the DI and not the stored state used in messages.
Sensor Health
This section displays the health of each sensor in the current option. The data can be refreshed using the
related 'Refresh' button. The underlying command is 'sensorhealth' (see Table 4).
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8.5.5 Live data tab
This tab displays the selected data. Two data types are available; ADC data and Wave Meter data (see Figure
30 below).
Figure 30 Live data tab
ADC Data
The ADC to be used is selected with the drop down menu. The Raw and Scaled radio buttons select the type
of data to be output from the selected ADC. The Start/Stop button controls the flow of data. Note that when this
data flow is enabled all other commands are inaccessible.
8.6 Other features
The proAtoN application provides the following additional features to support transceiver installation and
upgrade.
8.6.1 Offline configuration (applies to transceiver configuration mode only)
The AIS AtoN transceiver configuration including all schedule parameters, virtual AtoN configuration and other
settings can be saved to a file. This feature allows a configuration file to be created without access to the
transceiver hardware. The file can be loaded at a later time and synchronised with the transceiver hardware.
This feature is available using the ‘Save File’ and ‘Load File’ items available on the File menu. The configuration
is saved as a .pad file using a format proprietary to the proAtoN application.
When the proAtoN application is launched a new blank configuration file is created. You will be prompted to
save this file if changes are made without saving the file prior to closing the application, or if a ‘New file’ is
created from the File menu.
Operation
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9 Operation
Once configured and connected to a power supply and antennas the AIS AtoN transceiver will operate
autonomously. Correct operation can be confirmed by checking for reception of Aids to Navigation reports
(message 21) using another AIS device.
9.1 Standby operation
During operation the AIS AtoN transceiver will enter a low power standby mode between scheduled
transmissions. The unit will not enter standby mode under the following conditions.
●USB interface connected - the AIS AtoN transceiver will not enter standby mode whilst the USB
interface is connected to a PC. The USB interface should be disconnected once the AIS AtoN
transceiver is configured and deployed.
●GPS acquisition - the AIS AtoN transceiver will not enter standby mode for the first 12 minutes of
operation with GPS position available after power is first applied. This period is used to acquire the
current number of UTC leap seconds from the GPS system. This only occurs at initial power up and
subsequently on four occasions during each calendar year when it is possible for the number of leap
seconds to change.
●Off-position algorithm - the AIS AtoN transceiver will not enter standby mode when the off position
algorithm is active and the AIS AtoN transceiver is determined to be off position. Whilst off position
the GPS receiver is permanently enabled in order to monitor the position according to the algorithm
provided in IALA A-126 Annex A. Should the AIS AtoN transceiver return on position standby
operation will resume.
●Schedule configuration - the AIS AtoN transceiver will not enter standby mode if the configured
reporting schedule prevents standby operation. The AIS AtoN transceiver will only enter standby
mode when there is a minimum of 15 seconds between scheduled FATDMA transmissions or 1
minute and 5 seconds between scheduled RATDMA transmissions.
●Vessel Proximity Alert - the AIS AtoN transceiver will not enter standby mode when the vessel
proximity alert message is enabled. In this scenario, the transceiver will be continually monitoring AIS
messages to establish the proximity of vessels.
During operation the AIS AtoN transceiver will output AITXT sentences to the NMEA0183 port 1 indicating any
conditions blocking entry to standby mode.
11S 33S
If entry into standby mode is blocked by one or more of these conditions the power
consumption of the AIS AtoN transceiver will increase significantly.
!
Data messages and data sources
Page 52
10 Data messages and data sources
The transceiver can be configured to transmit a range of data messages in addition to the standard AIS AtoN
position report. The purpose, content and means of configuring supported message types is described in the
table below.
Configuration of the AIS AtoN for capture of data for messages #6 and #8 is described in the following sections.
The options available for data capture depend on the transceiver variant.
10.1 Configurations without the Sensor Interface
The data payload for binary messages #6 or #8 must be provided by external equipment interfaced to the AIS
AtoN transceiver using the NMEA0183 port 1 available at the Link connector on the AIS AtoN transceiver as
described in section 7.1.5. The payload data for the message is requested by the transceiver using a
proprietary MCR sentence and provided by the external equipment using the MPR sentence defined in section
11.2.9.
10.2 Configurations with the Sensor Interface
The Sensor Interface supports the construction of data payloads for the following messages:
ID Message
type Description and use Content sources
6Addressed
binary data
This message is addressed to another
individual AIS station, usually an AIS base
station, which is configured to decode the
message content. The message content is
binary data in a standardised or proprietary
format. The message may be used to
communicate status information about the
AtoN and / or meteorological and hydrographic
data captured at the AtoN.
The binary content for this
message can be generated by
the Sensor Interface, or
provided by suitably configured
third party equipment. See
sections 10.1 and 10.2 for
further information.
8Broadcast
binary data
This message is broadcast to all other AIS
stations. The message content is binary data in
a standardised or proprietary format. The
message may be used to communicate status
information about the AtoN and / or
meteorological and hydrographic data
captured at the AtoN.
The binary content for this
message can be generated by
the Sensor Interface, or
provided by suitably configured
third party equipment. See
sections 10.1 and 10.2 for
further information.
12
Addressed
safety
related
message
This message is addressed to another
individual AIS station and contains safety
related text. The text can warn of a failure of
the AtoN equipment, alert an approaching
vessel to danger of collision with the AtoN or
indicate that the AtoN is operating off position
See section 8.3.7 for further
information.
14
Broadcast
safety
related
message
This message is broadcast to all other AIS
stations and contains safety related text. The
text can warn of a failure of the AtoN
equipment or indicate that it is operating off
position
See section 8.3.7 for further
information.
1
3
1S 3S
Data messages and data sources
Page 53
●Message #6
○UK GLA AtoN monitoring message DAC 235, FI 10 UK (default)
○Zeni Lite Buoy Co. AtoN monitoring message DAC 000, FI 00 (optionally configured with required
DAC and FI)
●Message #8 IMO Metrological and Hydrological data
○DAC 001, FI 31 (default)
○DAC 001, FI 11 (optionally configured for use with legacy systems)
10.2.1 AIS AtoN transceiver configuration
In order to transmit the supported binary messages the transceiver must be configured as described below.
For message #6:
●The AIS AtoN transceiver must be configured with a schedule for message #6 index 1.
●The schedule can be either FATDMA or RATDMA. The recommended interval for this message is 12
minutes (27000 slots). Configure the AIS AtoN transceiver with a schedule for message #6 index 1
using proAtoN following the guidance in section 7.3.2.
●The destination MMSI for addressed messages must also be configured as described in
section 7.3.1. This should be the MMSI of a shore station that will receive and display the monitoring
message.
●Note that each message #6 occupies one slot.
For message #8:
●The AIS AtoN transceiver must be configured with a schedule for message #8 index 1.
●The schedule can be either FATDMA or RATDMA. The recommended interval for this message is 12
minutes (27000 slots). Configure the transceiver with a schedule for message #8 index 1 using
proAtoN following the guidance in section 7.3.2.
●Note that each message #8 FI 31 occupies two slots.
10.2.2 Configuration of the Sensor Interface
The extended sensor interface is configured using a range of simple shell commands or via the proAtoN
application as detailed in section 8. Configuration via shell commands are detailed in this section. Commands
related to specific external devices are detailed in the documents for those devices.
10.2.3 Accessing the Sensor Interface shell
●Connect to the Sensor Interface using a terminal emulator (TeraTerm for example) running on a PC.
The PC COM port for the Sensor Interface can be found from the Device Manager or Serial
Connection drop down menu of proAtoN, if connected. The port’s friendly name is “AIS AtoN Sensor
Port”.
●The following terminal configuration is required.
○Baud rate:38400
○Data: 8 bit
○Parity: None
○Stop: 1 bit
○Flow Control:None
○New line Termination Characters: Receive: <CR>, Transmit: <CR><LF>
●Once connected, the shell can be entered using the +++ command. This command will cause the
shell prompt ‘>’ to appear.
1S
3S
Data messages and data sources
Page 54
10.2.4 General Sensor Interface configuration commands
Table 4 details the general commands used to configure the Sensor Interface.
Table 4 General Extended Sensor Interface Configuration Commands
10.2.5 Zeni Lite Message #6 configuration commands
The Zeni Lite message #6 has a range of configurable parameters. The related commands are detailed in
Table 5 below.
Command Parameter Description
option Int: option
Select either Zeni Lite configuration option 0,1, 2, 3 or
4.
Defaulted to option 1.
Valid option parameter values 0 to 4.
msg6ver int: version
Selects the version of message #6 to build.
1 = GLA version (Default)
2 = Zeni Lite version
msg8ver int: version
Selects the version of message #8 to build.
1 = Circ.236 version, FI 11
2 = Circ.289 version, FI 31(Default)
showvalues none Displays the current values for all optional configuration
parameters.
sensorhealth none Displays the health status of external devices for the
current configuration option.
getdistates none Displays the current state of the digital inputs.
Command Parameter Description
msg6dac int: decimal
DAC value
Sets the DAC value to be used in the Zeni Lite version
of message #6.
Range: 0 (default) to 1023.
msg6fi int: decimal
FI value
Sets the FI value to be used in the Zeni Lite version of
message #6.
Range: 0 (default) to 63
msg6subid int: decimal
Sub-id value
Sets the Sub-application ID value to be used in the
Zeni Lite version of message #6.
Range: 0 to 65535. Default = 1.
Data messages and data sources
Page 55
Table 5 Zeni Lite Message #6 Configuration commands
10.2.6 ADC configuration commands
Two possible ADC sources are used for voltage and current values. The source is selected and the scaling
details can be entered using the commands detailed in Table 6. Note that installers are responsible for
designing and installing the necessary external interface circuitry to make use of the alternate data sources
and for setting the scaling values to match the input to output ranges and optimise the output accuracy.
pwrtype int: power
supply type
Sets the power type value to be used in the Zeni Lite
version of message #6.
1 = DC (Default), 0 = AC
voltthresh
int: decimal
threshold
value
Sets the battery voltage threshold at which the good
health flag is set.
Range: 0 to 360 (in 0.1volt steps). Default = 100.
(Value is only used when pwrtype is 1, DC.)
lightonsource int source
Selects the source to use for light on bit.
0 = (Default) Current sense (as set by altisource)
1 = ISO DI
Command Parameter Description
voltsource int: source
Sets the source for voltage data message #6
1 = internal voltage ADC
2 = external isolated ADC 1
setvoltscale
int dividend
int divisor
int kfactor
int offset
User accessible command to set the scaling for the
Internal voltage ADC values
See section 10.2.7 for details of the scaling method.
setaltvoltscale
int dividend
int divisor
int kfactor
int offset
User accessible command to set the scaling for the
ISO ADC 1 values
See section 10.2.7 for details of the scaling method.
enableisense int: on/off
Enables the current sense functionality.
This is disabled by default for power and processing
efficiency, 1=on, 0=off.
altisource Int: on/off
Selects the source for current sense values.
0 = internal ISENSE loop (default)
1 = ADC 2
Command Parameter Description
Data messages and data sources
Page 56
Table 6 ADC configuration commands
10.2.7 ADC Scaling
The raw values read from isolated ADC 1 and 2 can be scaled to suit the input and output ranges and to
optimise the accuracy of the reported value. There are a range of factors that influence the accuracy of the
scaled value and installations may need to be optimised on a case-by-case basis.
The formula used to scale values is:
Scaled_value = (((Raw_value - offset) * dividend) /divisor) + kfactor
Where:
●offset = the adjustment for raw ADC values that are not zero when the input voltage is zero (a
situation that can be caused by some connection circuits).
●dividend = the output range
●divisor = the input range (resolution)
●kfactor = zero
The isolated ADCs (as described in section 6.2.1) have 16 bit resolution. The non-isolated ADCs, used for
internal voltage and ISENSE measurements, have 12 bit resolution.
Installers will need to establish the required scaling values theoretically depending on the use case, input them
using the relevant shell commands described in Table 6 and adjust the values experimentally to optimise the
result.
Additional sensor shell commands, getadccont <ADC number; 0 = ISO ADC 1, 1 = ISO ADC 2> and
getadccontscaled <ADC number> can be used to evaluate the results. getadccont is particularly useful for
testing the raw output for the ADCs when zero input voltage is applied. This value can be used as the offset.
For reference, and to enable resetting the values, the default values for the ADCs are:
●Isolated ADC 1 and ADC 2
○offset = 0, dividend = 1, divisor = 42, kfactor = 0
●Internal ISENSE non-isolated ADC8
○offset = 12, dividend = 5000, divisor = 4095, kfactor = 0
●Internal supply voltage ADC
○offset = 0, dividend = 180 divisor = 823, kfactor = 0
isensethresh
int: decimal
threshold
value
Sets the threshold (in mA) at which the current OK flag
is set / value reported in message #6.
Default 100mA as defined for the GLA message #6.
setisensescale
int dividend
int divisor
int kfactor
int offset
User accessible command to set the scaling for the
ISENSE ADC values.
See section 10.2.7 for details of the scaling method.
setaltisensescale
int dividend
int divisor
int kfactor
int offset
User accessible command to set the scaling for the
ISO ADC 1 ADC values.
See section 10.2.7 for details of the scaling method.
Command Parameter Description
Data messages and data sources
Page 57
10.2.8 Message #6 Data Mapping
Table 7 and Table 8 show the mapping of data sources to the message #6 fields.
Table 7 Data mapping for message #6 DAC 235, FI 10
Message #6 DAC 235, FI 10
data field Data Source Notes
Analogue voltage
(internal) Supply voltage to the transceiver
No additional connections
are
required for this
measurement
Analogue voltage
(external 1)
Sensor Interface
isolated analogue input 1
See section 7.2.
Note that the default scaling
values for this ADC are set
for this message.
Analogue voltage
(external 2)
Sensor Interface
isolated analogue input 2
See section 7.2.
Note that the default scaling
values for this ADC are set
for this message.
Status bits (internal, 5
bits)
The light and RACON status bits.
These values will also be used in
message #21 when the sensor is
used as the status bit source.
See section 8.3.6 for
information
on configuration of status
source.
Status bits (external, 8
bits)
Bit 0 - Isolated digital input 1
Bit 1 - Isolated digital input 2
Bit 2 - Isolated digital input 3
Bit 3 - Isolated digital input 4
Bit 4 - Isolated digital input 5
Bit 5 - Set to 1 if light current
sense >=100mA, else set to 0
Bit 6 - non isolated digital input 1
Bit 7 - non isolated digital input 2
See section 7.2.
The light current sense bit
can use the internal ISENSE
loop (default) or ISO ADC 2
Off position status Transceiver off position algorithm Transceiver off position
algorithm
Message #6 Zeni Lite Format Data Source Notes
DAC User Input See section 10.2.5
FI User Input See section 10.2.5
Sub-application ID User Input See section 10.2.5
Voltage Data Internal Voltage or
External Isolated ADC 1
See sections 10.2.6 and
10.2.7
Current Data Internal ISENSE loop or
External Isolated ADC 2
See sections 10.2.6 and
10.2.7
Data messages and data sources
Page 58
Table 8 Data mapping for message #6 Zeni Lite format
10.2.9 External device support
The unit currently supports the following external devices which can be configured in number of combinations
(“options”) and the data used to populate message #8 Meteorological and Hydrological data. Two formats of
this message are supported; DAC 001, FI 31 and DAC 001, FI 11.
●Airmar PB200 / 150WX Weather Station
●Impress S12C Water Pressure and Temperature gauge
●RM Young Wind Monitor
●JFE Advantech Co. Current Meter AEM-RS
●Vaisala Weather Transmitter WXT520
●SeaLite light serial interface
●RM Young weather station
●Nortek AS Aquadopp Profiler
●Gill Metpak Weather Station
●Valeport TideMaster tide gauge
Separate guides are available for each device detailing the connection and configuration arrangements. Only
certain arrangements of sensors are possible due to the limitations of the Sensor Interface as shown in Table 9.
By default the Sensor Interface is configured to interface to the Airmar weather station via either the RS422 or
RS232 A port and the Impress water meter via the RS232 B port. Please contact your supplier for details of
how to configure the Sensor Interface to operate with other devices.
The Sensor Interface can also be adapted to support almost any equipment that might be encountered in an
AtoN application. If your application requires interface to equipment other than that listed here please contact
your supplier to discuss your requirements.
Power Supply Type User Input See section 10.2.5
Light Status Isolated DI 1 or ISENSE ADC 2
Battery Status Voltage Data value compared with
user input threshold.
Only functions if power
supply type is DC
Off-position Status Transceiver off position algorithm Transceiver off position
algorithm
Message #6 Zeni Lite Format Data Source Notes
Data messages and data sources
Page 59
Table 9 Sensor Configuration Options
* this device can be connected via RS422 or RS232
** this device is connected via SDI-12 (which disables RS232 B)
Note: The Impress S12C Water Pressure and Temperature gauge is connected via the SDI-12 interface.
RS422 RS 232 A
Airmar PB200 / 150WX*
RM Young Wind Meter Advantech Current Meter
Vaisala Weather Station Aquadopp Current Profiler
RM Young Wind Meter Aquadopp Current Profiler
Vaisala Weather Station Advantech Current Meter
SeaLite Light serial interface
RM Young weather station
MetPak Weather Station Valeport Tide Gauge
Manual configuration
Page 60
11 Manual configuration
The AIS AtoN transceiver and Sensor Interface can be configured using standardised NMEA0183
(IEC61162-1/2) sentences developed for configuration of AIS Aids to Navigation transceivers.
11.1 Basic Type 1 AIS AtoN configuration (FATDMA operation)
The following information is the minimum required configuration for a Type 1 AIS AtoN reporting message #21
only.
●The AIS AtoN station must be configured with the 'real' AtoN MMSI using the AID command.
●The AIS AtoN station must be configured with an Name, charted position, operating radio channels
and dimensions using the ACF and ACE commands.
●The AIS AtoN should be configured to broadcast message 21 using the AAR command. Note that the
slots selected for the AIS AtoN transmissions in FATDMA mode must be reserved by a base station
operating in the area in which the AIS AtoN will be deployed.
11.2 NMEA0183 / IEC61162 configuration sentences
The following section documents the standardised NMEA0183/IEC61162 sentences used for AIS AtoN
configuration and control.
Please refer to IEC61162-1 (Edition 4) for complete details of the configuration sentence structure.
The configuration sentence formats described in this section are used to both configure the device and as the
response format from the device when queried for current status. The query command format is as follows:
For example the query command $ECAIQ,AAR*21 requests the transceiver output an AAR sentence
containing the currently configured broadcast rates for the AIS AtoN station.
Configuration sentences are communicated using the transceiver USB interface.
11.2.1 AAR - Configure broadcast rates for AtoN station
This sentence assigns the schedule of slots that will be used to broadcast Message 21 and other allowed AIS
AtoN Station messages. It provides the start slot and interval between the slots used for consecutive
transmissions for the message. The AIS AtoN Station should apply the information provided by this sentence
to autonomously and continuously transmit the messages until revised by a new AAR sentence. The AIS AtoN
Station, upon receipt of an AAR Query for this information, will generate sentences for configured messages
providing the current broadcast schedule. New AAR assignments will override existing AAR assignments.
11S 33S
$--AIQ
,
ccc
*hh<CR><LF>
Sentence formatter of data being requested
(
e.g.,AAR)
$--AAR,xxxxxxxxx,xx,xx,xx,xx,xxxx,x.x,x,xx,xx,xxxx,x.x,a*hh<CR><LF>
Sentence status flag (see note 7)
Slot interval channel 2 (see note 6)
Start slot channel 2 (see note 5)
UTC minute for channel 2
UTC hour for channel 2
FATMA or RATDMA setup (see note 4)
Slot interval channel 1 (see note 6)
Start slot channel 2 (see note 5)
UTC minute for channel 1
UTC hour for channel 1
Message ID index (see notes 3 & 8)
Message ID (see note 2 & 8)
MMSI (see notes 1 & 8)
Manual configuration
Page 61
11.2.2 ACE - Extended general AtoN Station configuration
This sentence and the ACF sentence are used to configure the AIS AtoN Station parameters when it is initially
installed, and later in order to make changes to the way it operates. This sentence supports system
administration of the AIS AtoN Station operation.
Note 1 The MMSI is defined in the AID sentence. This field contains the linkage between the MMSI definition (AID),
Message 21 configuration (ACF, and ACE) and scheduling (AAR) of Message 21 transmissions.
Note 2 Message ID is the message identification of the message being scheduled. When Message ID is 0 this indicates
that the slots being defined will be used for chaining messages. These slots are not reserved on the VDL via a
Message 20 until the competent authority requires their use and will reserve the slots at that time for the proper
duration. These slots can be used for chaining or for MPR single transmission.
Note 3 Message ID Index is used when there are multiple versions of a Message ID. This index value should start at 1.
Note 4 Used to select whether the AAR is configuring an FATDMA schedule or RATDMA/CSTDMA schedule (0 indicates
FATDMA, 1 indicates RATDMA)
Note 5 For all messages which need to be transmitted in FATDMA mode, starting slot ranging from −1 to 2249 should be
used. A value of –1 discontinues broadcasts of the message when the AAR sentence is sent to the AtoN Station,
and indicates that no message has been broadcast if the AAR sentence is received from the AtoN Station. A null
field indicates no change to the current start slot setting when sent to the AtoN Station, and indicates that the start
slot has not been set, i.e. is unavailable, when the AAR sentence is received from the AtoN Station. For an
RATDMA transmission schedule, this field will be Null.
Note 6 For all messages which need to be transmitted, in FATDMA mode slot Interval ranging from 0 to (24*60*2250;once
per day) and in RATDMA/CSTDMA mode, time interval ranges from 0 to (24*60*60) s. A null field indicates no
change to the current slot interval setting when sent to the AtoN Station, and indicates that the slot interval has not
been set, i.e. is unavailable, when the AAR sentence is received from the AtoN Station.
Note 7 This field is used to indicate a sentence that is a status report of current settings or a configuration command
changing settings. This field should not be null.
“R’ = sentence is a query response
“C” = sentence is a configuration command to change settings.
Note 8 The MMSI/Message ID/Message ID index are used to reference a table of messages loaded using MPR,
ACF/ACE; this sentence defines the broadcast schedule for each message. Each message in this table is
referenced by the combination of MMSI, Message ID, and Message ID index.
Note 1 AtoN status bits, indication of the AtoN status, default “00hex”: for a Virtual AtoN, this field should be
00hex. The three most significant bits represent the page ID.
Note 2 The off-position indicator is generated when this threshold is exceeded (distance in metres).
Note 3 Determines the behaviour of AtoN for message acknowledgement (Message 7 and 13):
0 will provide acknowledgement as defined by manufacturer,
1 will not provide acknowledgement.
Note 4 Off-position behaviour:
0 – maintain current transmission schedule,
1 – use new reporting interval configured by AAR using message ID index.
Note 5 Synch lost behaviour:
0 – silent,
1 – continue as before.
Note 6 Name of the AtoN: maximum 34 characters.
Note 7 Reference point of reported position; should be given as dimension (aaabbbccdd) of the buoy.
(See IALA A-126)
Sentence status flag (see note 8)
Dimensions (see note 7)
Name of AtoN (see note 6)
Synch lost behaviour (see note 5)
Off position behaviour (see note 4)
A
cknowledgment procedure (see note 3)
Off position threshold (see note 2)
A
toN status bits (see note 1)
MMSI
$--ACE,xxxxxxxxx,hh,xxxx,x,x,x,c--c,xxxxxxxxxx,a,*hh<CR><LF>
Manual configuration
Page 62
11.2.3 ACF - General AtoN Station configuration
This sentence and the ACE sentence are used to configure Message 21 content for the AtoN
Station and all of the Synthetic/Virtual AtoN Stations associated with the AtoN Station.
11.2.4 AFB - Forced broadcast
This sentence is used to force a transmission of the indicated VDL message, this message is already known
to the AIS AtoN Station through AAR/MPR or ACE/ACF/AAR configuration commands.
Note 8 This field is used to indicate a sentence that is a status report of current settings or a configuration command changing
settings. This field should not be null.
“R’ = sentence is a query response,
“C” = sentence is a configuration command to change settings.
Note 1 Identifies the source of the position, see ITU-R M.1371 Message 21 parameter (type of electronic position fixing
device).
Note 2 Nominal or charted position.
Note 3 0 = low > 10 m,
1 = high < 10 m; differential mode of DGNSS. VHF channel number, see ITU-R M.1084.
Note 4 VHF channel number, see ITU-R M.1084.
Note 5 0 = default manufacturer power level (nominally 12,5 W),
1 to 9 as defined by the manufacturer.
Note 6 Virtual AtoN flag
0 = Real AtoN at indicated position (default),
1 = Virtual AtoN,
2 = Synthetic AtoN (flag remains 0 in message 21 but the repeat indicator must be > than 0).
Note 7 This field is used to indicate a sentence that is a status report of current settings or a configuration command
changing settings. This field should not be null.
“R’ = sentence is a query response,
“C” = sentence is a configuration command to change settings.
Note 8 The MMSI/Message ID/Message ID Index are used to reference a table of messages loaded using
MPR/ACF/ACE. This sentence defines the broadcast schedule for each message. Each message in this table is
referenced by the combination of MMSI, Message ID and Message ID Index.
Note 1 If the start slot is null, the AtoN Station will use RATDMA for transmission.
Sentence status flag (see note 7)
Virtual flag (see note 6)
Type of AtoN
Power level (see note 5)
Tx channel 2 (see note 4)
Tx channel 1 (see note 4)
Rx channel 2 (see note 4)
Rx channel 1 (see note 4)
Position accuracy (see note 3)
Longitude – E/W (see note 2)
Latitude – N/S (see note 2)
$--ACF,xxxxxxxxx,x,llll.llll,a,yyyyy.yyyy,a,x,xxxx,xxxx,xxxx,xxxx,x,xx,x,a*hh<CR><LF>
Type of EPFS (see note 1)
MMSI (see notes 1 & 8)
Sentence status flag (see note 2)
Channel 1/2
Start slot (see note 1)
UTC minute for start slot
UTC hour for start slot
Message ID index
Message ID
MMSI
$--AFB,xxxxxxxxx,xx,xx,xx,xx,xxxx,x,a*hh<CR><LF>
Manual configuration
Page 63
11.2.5 AFC - AtoN function ID capability
This sentence is used to provide the capability information of implemented function ID by the EUT. This
sentence is initiated with a QAFC and the response is the AFC.
11.2.6 AID - MMSI configuration
This sentence is used to load, for an AtoN Station, its Real, Virtual and chained MMSI(s). The MMSI from the
factory shall be as defined by the manufacturer. Each AtoN Station will maintain a table of its MMSI(s) and the
messages associated with these MMSI(s). This sentence is also user to load the destination MMSI for
addressed messages. To set the destination MMSI using this sentence set the ‘Virtual, Real or Chained’ field
to 0. Note that only one destination MMSI can be configured
Note 2 This field is used to indicate a sentence that is a status report of current settings or a configuration command
changing settings. This field should not be null.
“R’ = sentence is a query response
“C” = sentence is a configuration command to change settings.
Note 1 Each bit corresponds to the function ID number and the bit value “0” indicates the function ID number is
not supported and “1” indicates supported. The most significant bit is function ID “0”.
Note 1 The MMSI of the station being addressed. The initial factory setting should be defined by the manufacturer, for
example 000000000.
Note 2 The indicator to define if the MMSI is being created/changed (1) or deleted (0). If own station MMSI is deleted it
should revert to the factory setting. If a Virtual AtoN is deleted, then all associated messages for that Virtual AtoN
are also deleted.
Note 3 The current MMSI to be created/changed/or deleted.
Note 4 Real AtoN, chained, or Virtual AtoN – Real is own station, chained indicates an MMSI that this station is
responsible for relaying messages to and from, a Virtual AtoN indicates an MMSI that this station is responsible for
generating at least a Message 21.
“R” – Real AtoN;
“V” = Virtual/Synthetic AtoN;
“P” = parent AtoN in the chain;
“C” = child AtoN in the chain.
“0” = Set destination MMSI for addressed messages.
Note 5 This field is used to indicate a sentence that is a status report of current settings or a configuration command
changing settings. This field should not be null.
“R’ = sentence is a query response,
“C” = sentence is a configuration command to change settings.
Status of implementation fro each function ID (see note 1)
MMSI
$--AFC,xxxxxxxxx, hhhhhhhhhhhhhhhh*hh<CR><LF>
Sentence status flag (see note 5)
Virtual, Real or Chained (see note 4)
MMSI (see note 3)
Create or delete MMSI (see note 2)
Current MMSI of the AtoN station (see note 1)
$--AID,xxxxxxxxx,x,xxxxxxxxx,a,a*hh<CR><LF>
Manual configuration
Page 64
11.2.7 ARW -Configure the receiver turn-on times
This sentence defines the operational period for the receivers. When chaining the duration of receiver wake up
time must be sufficient to allow correct operation of a chain.
11.2.8 MCR - Configure proprietary AtoN control
The payload of this sentence will be proprietary information used to control the AtoN Station.
11.2.9 MPR - Message configuration of payload re-broadcast
This message will be used to command the AIS AtoN Station to rebroadcast the payload or to define a new
message for autonomous, continuous transmission. The AAR configuration with message ID/message ID
index for a specific MPR must precede the MPR to identify it as autonomous continuous transmission. If it is a
single transmission, this payload will be broadcast using the slots reserved by the AAR with message
ID/message ID Index = 0, or it will use the next available slot.
Note 1 0 = use interval setting as defined below;
1 = turn receiver on.
Note 2 Interval between receiver activation:
1 – 60 min if UTC hour is set to 24;
1 – 256 h if UTC hour is 0- 23;
(Note: 168 h is once per week).
Note 3 Maximum awake time (1 440 min is 24 h).
Note 4 This field is used to indicate a sentence that is a status report of current settings or a configuration command
changing settings. This field should not be null.
“R’ = sentence is a query response,
“C” = sentence is a configuration command to change settings.
Note 1 This field is used to indicate a sentence that is a status report of current settings or a configuration command
changing settings. This field should not be null.
“R’ = sentence is a query response,
“C” = sentence is a configuration command to change settings.
Note 1 The following messages are supported by ITU-R M.1371 Messages 6, 8, 12, 14, 25, 26 and other appropriate
messages.
Note 2 0 = use AAR definition,
1 = use next available slot.
Sentence status flag (see note 4)
Duration of receiver wake up (see note 3)
Receiver wake up interval (see note 2)
UTC minute
UTC hour
Receiver on or interval (see note 1)
MMSI of the AtoN station
$--ARW,xxxxxxxxx,x,xx,xx,xxx,xxxx,a*hh<CR><LF>
Sentence status flag (see note)
Payload up to the 80 character length
MMSI
$--MCR,xxxxxxxxx,c--c,a*hh<CR><LF>
Sentence status flag (see note 3)
Payload
Sequence number
Total number of sentences
Broadcast behaviour (see note 2)
Message ID index
Message ID (see note 1)
$--MPR,xxxxxxxxx,xx,xx,x,xx,xx,c--c,a*hh<CR><LF>
MMSI
Manual configuration
Page 65
11.2.10TSP - Transmit slot prohibit
This sentence is used to prohibit an AIS station from transmitting in the specified slots. The AIS Station
receiving this sentence should not use the next occurrence of the indicated slots. This sentence is designed to
be used to protect interrogation responses from interference from Base Station transmissions and for use with
AtoN Stations. For an AtoN Station the Unique Identifier is the AtoN Station Real MMSI.
11.2.11VER - Version
This sentence is used to provide identification and version information about a talker device. This sentence is
produced either as a reply to a query sentence. The contents of the data fields, except for the unique identifier,
should be manufactured into the talker device. The unique identifier is the AtoN Station Real MMSI. In order to
meet the 79-character requirement, a "multi-sentence message" may be needed to convey all the data fields.
Note 3 This field is used to indicate a sentence that is a status report of current settings or a configuration command
changing settings. This field should not be null.
“R’ = sentence is a query response,
“C” = sentence is a configuration command to change settings.
Note 1 The MMSI is defined in the AID sentence and is the MMSI of the Real AtoN.
Note 2 The sequential identifier provides an identification number from 0 to 99 that is sequentially assigned and is
incremented for each new TSP sentence. The count resets to 0 after 99 is used. This sequential identifier is used
to identify the Base Station’s response to this TSP-sentence when it replies with a slot prohibit status report (see
TSR-sentence).
Note 3 1 = Channel 1,
2 = Channel 2.
Note 4 This is for record keeping. It contains the hour, minute, and second of this request.
Note 5 This is the slot from which the following slot offsets are referenced.
Note 6 Slot offset of the first slot in the block of slots to be blocked from use by the Base Station.
0 indicates no prohibited slots.
Note 7 Total number of consecutive slots to be blocked from use by the Base Station. The first slot of the block is also part
of the count. Therefore, the minimum value is 1.
1-5 = number of prohibited slots.
Note 8 This field is used to control the prohibited slots. This field should not be null.
C = immediately restore for use all slots currently prohibited from use,
E = the slot prohibition expires for the slots identified in this sentence after their next occurrence,
P = prohibit the use of slots identified in this sentence. Slots are restored for use using “C” or “R”,
R = restore the use of slots identified in this sentence.
Note 9 This field is used to indicate a sentence that is a status report of current settings or a configuration command
changing settings. This field should not be null.
“R’ = sentence is a query response,
“C” = sentence is a configuration command to change settings.
$--TSP,c--c,x.x,x,HHMMSS.SS,x.x,x.x,x.x,x.x,x.x,x.x,x.x,a,a*hh<CR><LF>
Sentence status flag (see note 9)
Prohibit duration control (see note 8)
Consecutive time slots in third block (see note 7)
Slot offset of third block of consecutive time slots (see note 6)
Consecutive time slots in second block (see note 7)
Slot offset of second block of consecutive time slots (see note 6)
Consecutive time slots in first block (see note 7)
Slot offset of first block of consecutive time slots (see note 6)
Reference slot (see note 5)
UTC hour, minute and second of requested blocking of slot use (see note 4)
Channel selection (see note 3)
Sequential identifier (see note 2)
MMSI (see note 1)
Manual configuration
Page 66
11.3 Proprietary configuration sentences
The following section documents the proprietary NMEA0183/IEC61162 sentences used for AIS AtoN
configuration and control. These sentence relate mainly to configuration of data capture and integration with
external equipment.
Note 1 The device type is used to identify the manufactured purpose of the device. Choice of the device type identifier is
based upon the designed purpose of the device. It is set into the equipment based upon the primary design of the
device and remains constant even if the user defined talker identifier feature is used (see BCF-sentence). For AIS
device types, use one of the following talker identifier mnemonics:
AB: independent AIS Base Station;
AD: dependent AIS Base Station;
AI: mobile class A or B (see IEC 61993-2 and IEC 62287-1) AIS station;
AL: limited AIS Base Station;
AN: AIS aids to navigation station;
AR: AIS receiving station;
AS: AIS physical shore station;
AT: AIS transmitting station;
AX: AIS simplex repeater station;
DU: duplex repeater station;
UP: microprocessor controller;
U#: (0 ≤ # ≤ 9) user configured talker identifier.
Note 2 The unique identifier is used for system level identification of a station, 15 alphanumeric character maximum. For
an AtoN Station, this is the Real AtoN MMSI number.
Note 3 The data field length may be 32 characters maximum. The length of 32 characters is chosen in order to be
consistent with similar data field lengths in the IEC 61162 standard. When large character lengths are used and the
80 character sentence limit would be exceeded for a single sentence, a series of successive VER sentences
should be used to avoid the problem (using data fields 1 and 2 to ensure the multiple VER sentences are properly
associated by the listener). Null fields can be used for data fields contained in other sentences of the series. Every
VER sentence shall contain the unique identifier.
Note 4 The manufacturer’s serial number for the unit. Note, this “internal” manufacturer’s serial number may or may not
match the physical serial number of the device.
Note 5 Vendor identification.
Note 6 Depending on the number of characters in each data field, it may be necessary to use a “multi-sentence message”
to convey a “VER reply.” The first data field specifies the total number of sentences needed, minimum value 1. The
second data field identifies the sentence number, minimum value 1.
Note 7 The third data field provides the sequential message identifier. The sequential message identifier provides a
message identification number from 0 to 9 that is sequentially assigned and is incremented for each new
multi-sentence message. The count resets to 0 after 9 is used. For a VER reply requiring multiple sentences, each
sentence of the message contains the same sequential message identification number. It is used to identify the
sentences containing portions of the same VER reply. This allows for the possibility that other sentences might be
interleaved with the VER reply that, taken collectively, contain a single VER reply. This data field may be a null field
for VER replies that fit into one sentence.
$--VER,x,x,x,aa,c--c,c--c,c--c,c--c,c--c,c--c*hh<CR><LF>
Hardware revision (see note 3)
Software revision (see note 3)
Model code (see note 3
Manufacturer serial number (see notes 3 &4)
Unique identifier (see note 2)
Vendor ID (see note 5)
Device type (see note 1)
Sequential message identifier (see note 7)
Sentence number, 1 to 9 (see note 6)
Total number of sentences needed, 1 to 9 (see note 6)
Manual configuration
Page 67
11.3.1 Status Bit Source
The MCR SBS command is used to set the source for the AtoN status bits which are transmitted in AIS AtoN
position reports (message #21). Refer to sections 6.1.3 and 7.1.4 for further information on the available
interfaces for status information.
11.3.2 Status Bit Source Query
This command issued to query the transceiver for the current Status Bit Source configuration. The response
will be in the format described in 11.3.1.
11.3.3 Light / RACON configuration
The MCR LRC command is used to configure the fixed status of a connected Light and / or RACON. This
affects the setting of the related status bits transmitted in message #21.
Note 1 Status bit source is either:
0 = ACE sentence provides status bits
1 = Transceiver basic IO connections provide status bits
2 = Sensor Interface provides status bits (applies only to variants including the Sensor Interface)
Note 2 This field is used to indicate a sentence that is a status report of current settings or a configuration command
changing settings. This field should not be null.
“R’ = sentence is a query response,
“C” = sentence is a configuration command to change settings.
Note 1 This field is used to indicate a sentence that is a status report of current settings or a configuration command
changing settings. This field should not be null.
“R’ = sentence is a query response,
“C” = sentence is a configuration command to change settings.
Note 1 Set the light fitted status, 1 = light fitted, 0 = light not fitted
Note 2 Set the RACON fitted status, 1 = RACON fitted, 0 = RACON not fitted
Note 3 Set the RACON monitored status, 1 = RACON monitored, 0 = RACON not monitored
Note 4 This field is used to indicate a sentence that is a status report of current settings or a configuration command
changing settings. This field should not be null.
“R’ = sentence is a query response,
“C” = sentence is a configuration command to change settings.
Sentence status flag (see note 2)
Status bit source (see note 1)
MMSI
$--MCR,xxxxxxxxx,SBS,x,a*hh<CR><LF>
Sentence status flag (see note 1)
MMSI
$--MCR,xxxxxxxxx,Q,SBS,a*hh<CR><LF>
Sentence status flag (see note 4)
RACON monitored (see note 3)
RACON fitted (see note 2)
Lamp fitted (see note 1)
MMSI
$--MCR,xxxxxxxxx,LRC,x,x,x,a*hh<CR><LF>
Manual configuration
Page 68
11.3.4 Light / RACON configuration query
This command issued to query the transceiver for the current Light / RACON configuration. The response will
be in the format described in 11.3.3.
11.3.5 General MCR query
$----Q,MCR*hh
This query command will return all the MCR commands as used for direct transceiver configuration.
A general query for MCR using $--Q,MCR will also return ACQ (Acquisition Configuration) information for all
messages. This is used as part of the configuration of an AIS AtoN transceiver connected to a Sensor Interface;
the information within the ACQ details the acquisition time the Sensor Interface needs from the AIS AtoN
transceiver before a transmission is going to take place, thus allowing the Sensor Interface sufficient time to
collect and average data as required for a transmission.
When the AIS AtoN transceiver is not connected to a Sensor Interface the ACQ data is not required but will still
get displayed when queried.
Note 1 This field is used to indicate a sentence that is a status report of current settings or a configuration command
changing settings. This field should not be null.
“R’ = sentence is a query response,
“C” = sentence is a configuration command to change settings.
Sentence status flag (see note 1)
MMSI
$--MCR,xxxxxxxxx,Q,LRC,a*hh<CR><LF>
Technical specification
Page 69
12 Technical specification
12.1 Applicable equipment standards
12.2 AIS AtoN transceiver specification
12.2.1 Physical
12.2.2 Environmental
IEC62320-2
Edition 1.0, 2008
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
ITU-R M.1371-4
April 2010
Technical characteristics for an automatic identification system using time-division
multiple access in the VHF maritime mobile band
IEC61162-1
Edition 4.0, 2010
Maritime navigation and radiocommunication equipment and systems – Digital
interfaces – Part 1: Single talker and multiple listeners
IEC61162-2
Edition 1.0, 1998
Maritime navigation and radiocommunication equipment and systems –
Digital interfaces – Part 2: Single talker and multiple listeners, high-speed
transmission
IEC61108-1
Edition 1.0, 2002
Global Navigation Satellite Systems (GNSS) –Part 1: Global positioning system
(GPS) - Receiver equipment - Performance standards, methods of testing and
required test results
IEC60945
2002
Maritime navigation and radiocommunication equipment and systems –
General requirements – Methods of testing and required test results
SDI-12
Version 1.3, 2009
A Serial-Digital Interface Standard for Microprocessor-Based Sensors
Transceiver
dimensions
172mm (width) x 128mm (depth) x 53mm (height) excluding connectors
Transceiver weight 365g excluding cables and accessories.
Operating
temperature range
-25°C to +55°C
Water ingress
rating
IPx6 and IPx7
Technical specification
Page 70
12.2.3 Electrical
12.2.4 GNSS
12.2.5 TDMA transmitter
12.2.6 TDMA receivers
Nominal supply
voltage
12 to 24VDC. Peak current at 12V is 3A. Peak current at 24V is 1.5A.
Absolute min and
max supply voltages
10 to 32VDC.
Power consumption
at 12VDC supply Type 1 (FATDMA) with message #21 transmission every 3 minutes, 0.1 Ah/day
Type 3 (RATDMA) with message #21 transmission every 3 minutes, 1.0 Ah/day
Type 1 with Sensor Interface (FATDMA) with message #21 transmission every 3
minutes, + option 0 operation every 5 minutes, 0.75Ah/day
Type 3 with Sensor Interface (RATDMA) with message #21 transmission every 3
minutes, + option 0 operation every 5 minutes, 1.7Ah/day
GNSS type Global Positioning System (GPS)
Receiver channels 50
Time to first fix (cold
start)
<36 seconds
Frequency L1 band, 1575.42MHz
Accuracy 2.5m CEP / 5.0m SEP without differential correction
2.0m CEP / 3.0m SEP with SBAS or RTCM DGPS correction
Antenna
requirement
Active external antenna (3.3V bias) with gain >20dB
Frequency range 156.025MHz to 162.025MHz
Channel bandwidth 25kHz
Output power Configurable 1W, 2W, 5W or 12.5W
Data transmission
rate
9600 bits/s
Modulation mode GMSK
Number of receivers 2
Frequency range 156.025MHz to 162.025MHz
Channel bandwidth 25kHz
Sensitivity <-107dBm for 20% PER
Modulation mode GMSK
Adjacent channel
sensitivity
70dB
Spurious response
rejection
70dB
Technical specification
Page 71
12.2.7 Supported AIS messages (transmission)
12.2.8 Connector types
12.3 Sensor Interface specification
12.3.1 Physical
12.3.2 Environmental
12.3.3 Interfaces
Message #6 Binary data for addressed communication
Message #8 Binary data for broadcast communication
Message #12 Safety related data for addressed communication
Message #14 Safety related data for broadcast communication
Message #21 Position and status report for aids-to-navigation
Message #25 Short unscheduled binary data transmission (Broadcast or addressed)
Message #26 Scheduled binary data transmission (Broadcast or addressed)
Power/USB
connector
Selwyn Electronics 23305525-02-RC
Link Selwyn Electronics 23018525-02-RC
VHF antenna Female N-type coaxial connector
GPS antenna Female TNC type coaxial connector
Ground stud M5 threaded stud
Sensor Interface
dimensions
172mm (width) x 128mm (depth) x 53mm (height) excluding connectors
Sensor Interface
weight
300g excluding cables and accessories.
Operating
temperature range
-25°C to +55°C
Water ingress
rating
IPx6 and IPx7
USB USB interface for configuration and diagnostics
RS232 Two RS232 level interfaces for connection of external equipment*
NMEA0183 /
IEC61162 / RS422
One fully optically isolated RS422 level interface for connection of external
equipment
SDI-12 One SDI-12 compliant interface for connection of external sensors supporting the
SDI-12 protocol*
Non-isolated digital
I/O
3 x non-isolated logic level I/O signals (3.3V logic levels)
Isolated digital
inputs
5 x optically isolated digital inputs, sensitivity 2.5V, max input voltage ±15V
1S
3S
Technical specification
Page 72
*Only one RS232 port is available when the SDI-12 interface is enabled.
Isolated analogue
inputs
Two isolated analogue inputs.
Range ±13.75V, 16 bit resolution.
Non-isolated
analogue inputs
Two non-isolated analogue inputs.
Range ±37.2V, 12 bit resolution.
Current sense loop Light current sense loop, max 5A. Measurement of currents up to 0.5A with 12bit
resolution.
Relay drive One relay driver output, max load 200mA at 60VDC.
Technical specification
Page 73
12.4 Drawings and dimensions
Figure 31 AIS AtoN Transceiver dimensions
Figure 32 Sensor Interface dimensions
53 mm
128 mm
126 mm
172 mm
114 mm
53 mm
128 mm
126 mm
172 mm
114 mm
Firmware upgrade procedure
Page 74
13 Firmware upgrade procedure
The AIS AtoN transceiver and Sensor Interface firmware can be updated should a new version be made
available. The firmware update is transferred using the USB interface. The pre-requisites for carrying out a
firmware update are:
●AIS AtoN Transceiver connected to a PC via the USB interface.
●If a Sensor Interface is being updated it should be connected to the PC via the USB interface. It is not
necessary to connect the Sensor Interface to the AIS AtoN Transceiver via the Link cable.
●The PC operating system must be Windows XP, Vista or 7.
●Prior installation of the USB driver (This is automatically installed when proAtoN is installed).
●A software update file for the AIS AtoN transceiver and/or Sensor Interface (available from your
supplier).
●The 'vxsend' PC software update utility (available from your supplier).
To update the firmware carry out the following steps:
1. Install and run the 'vxsend' utility (screenshot shown in Figure 33).
2. Click the Browse (…) button for the Image file, then navigate to and select the appropriate update file.
3. Select the COM port assigned to the AIS AtoN port or AIS AtoN Sensor port, depending on which
element is being updated.
4. Click 'Start' and wait for the update to complete. Notification is given when the update has completed
successfully.
5. Power cycle the transceiver and confirm normal operation before it is deployed.
Figure 33 vxsend utility screenshot
11S 33S

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