Chronos AIS Aids to Navigation Transceiver Chronos AIS AtoN Sensor Interface Installation and operation manual 201-0636:1
Table of contents 1 Glossary............................................................................................... 5 2 Notices ................................................................................................. 6 2.1 Safety warnings ................................................................................................................................. 6 2.2 General notices..................................................................................................
12.1 Applicable equipment standards...................................................................................................... 68 12.2 AIS AtoN transceiver specification................................................................................................... 68 12.3 Sensor Interface specification ......................................................................................................... 70 12.4 Configuration interface specification...................................
Table of figures Figure 1 The AIS network ........................................................................................................................... 9 Figure 2 Typical AIS AtoN system ............................................................................................................ 10 Figure 3 Typical AIS AtoN transceiver system connections .....................................................................
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..................................................
Glossary 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 Lighthous
Notices 2 Notices ! 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 ! 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.
Notices 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.
Notices 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.
Introduction 3 Introduction 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.
Introduction 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.
Introduction 3.3 Supported AIS messages The transceiver supports the following AIS message types. ITU-R M.1371-4 Message number 6 7 8 Description Binary addressed message Binary acknowledge message Binary broadcast message Transmitted / Received by AtoN Transceiver Application Transmitted and received The transceiver uses message 6 to send binary data (relating to connected sensors and systems) to a specific shore station.
Introduction ITU-R M.1371-4 Message number 20 21 25 Page 12 Transmitted / Received by AtoN Transceiver Application Received When operating as a Type 3 transceiver slot reservations made by a shore station using message 20 will be observed by the transceiver. Aids to Navigation report Transmitted This is the primary message transmitted by the transceiver. It contains the position, identification and status of the transceiver.
AIS AtoN product variants 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. ! A system of icons is used throughout this manual to highlight which AIS AtoN configurations a particular section, paragraph or illustration applies to.
Installation 5 Installation 1S 1 3 3S 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.
Installation 5.1 What’s in the box (AIS AtoN transceiver) 1 3 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.
Installation 5.2 What’s in the box (Sensor Interface) 1S 3S 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. Quick Start Guide Product CD Sensor Interface Backshell connectors (x2) USB configuration cable Figure 6 Link cable Fixings What’s in the box (Sensor Interface) ● Sensor Interface - The Sensor Interface unit.
Installation 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).
Installation 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.
Transceiver and Sensor Interface connections 6 Transceiver and Sensor Interface connections 1 1S 3 3S The supplied sealing cap must be fitted to all unused connections. ! 6.1 AIS AtoN transceiver connections The function of each connector is identified in Figure 8. Earth stud VHF antenna GPS antenna Link Power/USB Figure 8 6.1.
Transceiver and Sensor Interface connections 6.1.3 Using the 18 way link connector for direct connection of external equipment 1 3 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. The cable should have a minimum outer diameter of 6.
Transceiver and Sensor Interface connections Pin Signal name Function and notes 15 N/C Do not use 16 N/C Do not use 17 N/C Do not use 18 N/C Do not use Table 1 6.1.4 Pin numbers and functions for the supplied 18 way backshell connector 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.
Transceiver and Sensor Interface connections 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. Link USB Sensor 2 Sensor 1 Figure 10 Sensor Interface connections 6.2.
Connecting external sensors and systems 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.
Connecting external sensors and systems External equipment - example 1 Field Power 15VDC Max. + Output + - OutputField GND External equipment - example 2 Field Power 15VDC Max.
Connecting external sensors and systems ● 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.
Connecting external sensors and systems 1 3 2 4 7 12 16 6 5 8 10 9 13 17 14 11 15 18 Figure 12 Pin numbering for Sensor 1 and Sensor 2 connectors Pin Signal name Function and notes 1 SENSOR_RS422_TX_B Connection B of the RS422 TX port 2 SENSOR_RS422_RX_A Connection A of the RS422 RX port 3 SENSOR_RS422_TX_A Connection A of the RS422 TX port 4 SENSOR_RS422_RX_B Connection B of the RS422 RX port 5 SENSOR_RS422_GROUND RS422 ground connection 6 SENSOR_RS232_A_TX TX connection fo
Connecting external sensors and systems Pin Signal name Function and notes 1 SENSOR_ISO_DI_1+ Positive connection for the isolating digital input 1 2 SENSOR_ISO_DI_1- Negative connection for the isolating digital input 1 3 SENSOR_ISO_DI_2+ Positive connection for the isolating digital input 2 4 SENSOR_ISO_DI_2- Negative connection for the isolating digital input 2 5 SENSOR_ISO_DI_3+ Positive connection for the isolating digital input 3 6 SENSOR_ISO_DI_3- Negative connection for the isol
Connecting external sensors and systems ● 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.
Connecting external sensors and systems External equipment - example 1 Field Power 15VDC Max. ISO_DI_n+ Output + ISO_DI_n- OutputField GND External equipment - example 2 Field Power 15VDC Max.
Connecting external sensors and systems 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.
Connecting external sensors and systems 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.
Configuration using proAtoN 8 Configuration using proAtoN 1 1S 3 3S 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.
Configuration using proAtoN 8.2 Application layout The basic layout of the proAtoN application is provided in Figure 17. COM Port selection Read / Write configuration Configuration tabs Status bar 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.
Configuration using proAtoN ● 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.
Configuration using proAtoN ● 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.
Configuration using proAtoN 8.3.2 Message schedule configuration The layout of the message schedule tab is described in Figure 19. Add new message schedules Deactivate or remove selected schedule Current messages and schedules 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.
Configuration using proAtoN ● FATDMA 1 1S 3 3S Configuration of an FATDMA schedule continues in section 8.3.3. ● RATDMA 3 3S Configuration of an RATMDA schedule continues in section 8.3.4. 8.3.3 FATDMA Schedule configuration 1 1S 3 3S 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.
Configuration using proAtoN 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.
Configuration using proAtoN 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.
Configuration using proAtoN 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.
Configuration using proAtoN 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.
Configuration using proAtoN 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.
Configuration using proAtoN 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.
Configuration using proAtoN 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.
Configuration using proAtoN Message text Description / Resolution 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.
Configuration using proAtoN 8.5 Sensor configuration 1S 3S 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.
Configuration using proAtoN 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.
Configuration using proAtoN 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.
Configuration using proAtoN 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.
Configuration using proAtoN 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.
Operation 9 Operation 1 1S 3 3S 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.
Data messages and data sources 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. Message type Description and use Content sources Addressed binary data This message is addressed to another individual AIS station, usually an AIS base station, which is configured to decode the message content.
Data messages and data sources ● 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.
Data messages and data sources 10.2.4 General Sensor Interface configuration commands Table 4 details the general commands used to configure the Sensor Interface. 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.
Data messages and data sources Command Parameter Description 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.
Data messages and data sources Command Parameter Description 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.
Data messages and data sources 10.2.8 Message #6 Data Mapping Table 7 and Table 8 show the mapping of data sources to the message #6 fields. 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.
Data messages and data sources Message #6 Zeni Lite Format Data Source Notes 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 Table 8 Data mapping for message #6 Zeni Lite format 10.2.
Data messages and data sources 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 Table 9 Valeport Tide Gauge Sensor Configuration Options * this device can be connected via RS422 or RS232 ** this device is connected via SDI-12 (which disables R
Manual configuration 11 Manual configuration 1 1S 3 3S 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.
Manual configuration 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.
Manual configuration 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. 11.2.
Manual configuration 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. 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.
Manual configuration 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.
Manual configuration 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. 11.2.10TSP - Transmit slot prohibit This sentence is used to prohibit an AIS station from transmitting in the specified slots.
Manual configuration $--VER,x,x,x,aa,c--c,c--c,c--c,c--c,c--c,c--c*hh 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) Note 1 The device type is used to identify the manufactured purpose of the device.
Manual configuration 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.
Manual configuration 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. $--MCR,xxxxxxxxx,Q,LRC,a*hh Sentence status flag (see note 1) MMSI 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.
Technical specification 12 Technical specification 12.1 Applicable equipment standards IEC62320-2 Maritime navigation and radiocommunication equipment and systems – Edition 1.0, 2008 Automatic identification system (AIS) – Part 2: AIS AtoN Stations – Operational and performance requirements, methods of testing and required test results ITU-R M.
Technical specification 12.2.3 Electrical Nominal supply voltage 12 to 24VDC. Peak current at 12V is 3A. Peak current at 24V is 1.5A. Absolute min and 10 to 32VDC. max supply voltages 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.
Technical specification 12.2.
Technical specification Isolated analogue inputs Two isolated analogue inputs. Non-isolated analogue inputs Two non-isolated analogue inputs. 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. Range ±13.75V, 16 bit resolution. Range ±37.2V, 12 bit resolution. *Only one RS232 port is available when the SDI-12 interface is enabled.
Technical specification 12.
Firmware upgrade procedure 13 Firmware upgrade procedure 1 1S 3 3S 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.
