AIT250 Instruction Manual
Contents
1. Power level control e Information source e x8 In Use Flag e hhmmss ss Time of in use change Channel management information source messages NMEA 0183 ACS This sentence is used in conjunction with the ACA sentence and identifies the originator of an ACA message ACS Message Format ACS x ooooxxxx hhmmss ss xx xx xxxx hh lt CR gt lt LF gt e Sequence Number 0 to 9 e XXxxxxxxx MMSI of originator e hhmmss ss UTC of receipt of channel management information e XX UTC Day 01 31 e xx UTC Month 01 12 e XXXX UTC Year AIS Alarm Messages NMEA 0183 ALR Text ALR message format ALR hhmmss ss xxx A A c c hh lt CR gt lt LF gt Where e hhmmss ss Time of alarm UTC Unique alarm number e A Alarm condition e Alarm acknowledge state e alarm description text Alarms descriptions presented are e AIS TX malfunction e AIS Antenna VSWR exceeds limit e AlS Rx channel 1 malfunction e AIS Rx channel 2 malfunction DIGITAL IUE LEA EE EE UT DIGITAL YACHT LTD e AIS general failure e AIS no sensor position in use e AIS no valid SOG information e AIS no valid COG information e AIS 12V alarm e AIS 5V alarm e AIS Loss of serial interface integrity e AIS Background noise above 77dBm ACK messages Can be generated by a minimum keypad and display MKD unit chart plotter or other display device connected to the AIT250 to acknowl2. Configure baud rates GPS Output Options Silent mode 95232 Baud rate 38400 Output GPS data every four seconds Enter silent mode p Output GPS data every second F 95422 Baud rate 38400 v Exit silent mode Alarm output options Safety Related Message Output status of all alarms every minute Output only active alarms Transmit Safety Related Update Connected 38400 Baud e Silent mode o Buttons to enter exit silent mode In Silent mode the transmitter is disabled and no position reports are transmitted by the unit Other AIS users will be unaware of your position in this mode so it should be used with caution and only where allowed by local regulations e Safety related message o A button is provided to trigger the transmission of a Safety Related Message Clicking this button will display a confirmation dialog box Clicking OK in the confirmation dialog box will cause a Broadcast Safety Related Message with the contents MAYDAY MAYDAY to be transmitted to all other AIS equipped vessels and base stations in the area e Configure baud rates o Baud rates for the RS232 RS422 NMEA 0183 communications ports can be set here The default value is 38400 amp should be used where possible The Update button should be clicked to send new settings to the AIS transponder e GPS output options o Bydefault the AIS transponder will output its current GPS position data every four seconds via the RS232
3. RF AIS Regional Assignment Channel Assignment Message Acknowledgement AIS Channel management information source messages Audio frequency shift keying AIS Alarm Message Aid to Navigation Automatic Identification System Built In Integrity Testing Bayonet fitting type RF connector Carrier Sense Time Division Multiple Access Course over Ground Carriage Return Carrier Sense Carrier Sense TDMA Direct Current Differential Global Navigation Satellite System Digital Selective calling Global Navigation Satellite System Global Navigation Satellite System Gaussian Minimum Shift Keying Global Positioning Satellite System High Frequency International Maritime Organization International Electrotechnical Commission Light Emitting Diode Line Feed Low noise amplifier Medium Frequency Minimum Keypad and Display Maritime Mobile Service Identity Maximum Permissible Exposure National Marine Electronics Association Personal Computer Presentation Interface Radio Frequency DIGITAL D LU LR DIGITAL YACHT LTD RTCM RX RFI SAR SMS SOG SRM SRT TDMA TNC TX UTC VDM VDO VHF VSWR Radio Technical Commission for Maritime Services Commission Receive or Receiver Radio frequency interference Specific Absorption Rate Short Message System Speed over Ground Safety Related Message Software Radio Technology Time division Multiple Access Threaded type BNC connector Transmit or tran
4. Information provided by Digital Yacht is believed to be accurate and reliable However no responsibility is assumed by the company for its use nor any infringements of patents or other rights of third parties which may result from its use No license is granted by implication or otherwise under any patent or patent rights of Digital Yacht Ltd DIGITAL IUIS EE OU ON YACHT
5. A for recommendations on antennas and antenna installation If an external display unit chart plotter PC etc is to be used connect the supplied power and data interface cable to the Power NMEA port If an external display unit is not to be used connect the supplied power interface cable to the Power NMEA port and terminate and insulate unused connections Locate the RF power and or data cables into the rubber grommets pushing them firmly to the base of each slit Each cable is pushed into the grommet slit which lies directly in front of the connector the cable is connected to GPS Antenna Cable VHF Antenna Cable Replace the top of the transponder unit taking care to seat the cable grommets and the lid seal correctly Do not over tighten the fixing Screws If an external display unit is to be used such as a chart plotter PC serial terminal or other display device connect the user end of the data interface cable to the display device Note that the software in the display device must be configured for AIS operation AND to accept standard Class B operation NMEA sentences This external display unit software is not part of the AIT250 transponder package Connect a 12V DC supply 9 6 15 6V capable of supplying 2A peak to the DC power lead brown red positive black blue negative DIGITAL IUE LEA EE EE UT YACHT DIGITAL YACHT LTD The case of the unit is not isolated from the negative terminal of the su
6. AIS and DSC Frequency 156 025 to 162 025 MHz in 25 kHz steps 33dBm 1 5 dB 25kHz 25kHz 25kHz GMSK AIS TX and RX 25kHz AFSK DSC RX only 9600 b s 50 ppm GMSk 1200 b s 30 ppm FSK Sensitivity 107dBm 25kHz Message Error Rate 20 Co channel 10dB Adjacent channel 70dB IMD 65dB Blocking 84dB IEC 60945 Operating temperature 25 C to 55 C IEC 62287 Section 5 Cat c exposed to the weather Power TX timeout status pre set SRM sent Optional pre set safety related message SRM transmit button This product complies to all the necessary standards under the European R amp TTE directive for Article 3 1 a 3 1 b 3 2 and 3 3 e The following standards have been followed in pursuance of this DIGITAL IUE LEA EE EE UT DIGITAL YACHT LTD e 1 62287 1 2006 03 Maritime navigation and radiocommunication equipment and systems Class B shipborne equipment of the automatic identification system AIS Part 1 Carrier sense time division multiple access CSTDMA techniques e IEC60945 2002 08 Maritime navigation and radiocommunication equipment and systems General requirements Methods of testing and required test results e 1EC61162 1 Maritime navigation and radiocommunication equipment and systems Digital interfaces Part 1 Single talker and multiple listeners e EC61108 1 GLOBAL NAVIGATION SATELLITE SYSTEMS GNSS Part 1 Global positioning system GPS Receiver equipment P
7. Serial data Ship s Name Vessellype 37 Vessel Pleasure craft CalSion MMSI Number 1000000000 Vendor ID Ship s dimensions amp GPS Antenna location Switch function Press switch to send Safety Related Message Make switch to disable transmitter Press switch to toggle transmitter on off GPS Antenna Switch has no function Blue LED function Indicate switch state Indicate received AIS traffic Save static data to AIS v 3 The application requires a serial connection to an AIT250 transponder Connect the transponder to an available serial port The application will not function correctly unless an AIT250 is powered up and connected to a serial port 4 Select the serial port from the drop down menu then click Connect Select serial port DIGITAL IUIS EE OU ON YACHT DIGITAL YACHT LTD 5 Once a connection is established the application is ready to use Connection status is indicated at the bottom left of the application window The functions of proAIS are arranged in a series of tabs Each tab contains information relating to a particular aspect of the connected AIS transponder Depending on the version of proAIS installed not all tabs shown below may be visible Static data tab o Displays the Static data for the connected AIS transponder This includes the vessel s name call sign MMSI number and other fixed information o Allows ed
8. in permanent damage to the equipment and void your warranty and you re authority to operate this equipment under Part 15 regulations RF Emissions Notice Caution The AIT250 Class B AIS transponder generates and radiates radio frequency electromagnetic energy This equipment must be installed and operated according to the instructions contained in this handbook Failure to do so can result in personal injury and or product malfunction Caution Never operate the transponder unless it is connected to a VHF antenna To maximise performance and minimise human exposure to radio frequency electromagnetic energy you must make sure that the antenna is mounted at least 1 5 meters away from the transponder and is connected to the transponder before power is applied The system has a Maximum Permissible Exposure MPE radius of 1 5m This has been determined assuming the maximum power of the transponder and using antennas with a maximum gain of 3dBi DIGITAL AUTON LR E RE E UU YACHT DIGITAL YACHT LTD e antenna should be mounted as high above the deck as possible e Higher gain VHF antennas will require a greater MPE radius e Do operate the unit when anyone is within the MPE radius of the antenna unless they are shielded from the antenna field by a grounded metallic barrier e antenna should not be collocated of operated in conjunction with any other transmitting antenna This device has been designed to operate w
9. mismatched VHF antenna leaving the VHF antenna port disconnected or shorting the VHF antenna port will activate the VSWR alarm cause the unit to stop sending position reports and could cause damage to the transponder Radio Frequency Exposure To meet the requirements for Radio Frequency Exposure it is necessary to install the VHF antenna correctly and operate the AIS equipment according to the instructions DIGITAL IULII E E LU ON YACHT DIGITAL YACHT LTD User guide AIT250 proAlS Application Note proAIS is intended as a dealer application for programming and diagnostic testing of the AIT250 It can also be used with an on board PC for real time data viewing DIGITAL DIGITAL YACHT LTD GENERAL WARNINGS All marine Automatic Identification System AIS units utilise a satellite based system such as the Global Positioning Satellite GPS network or the Global Navigation Satellite System GLONASS network to determine position The accuracy of these networks is variable and is affected by factors such as the antenna positioning how many satellites are used to determine a position and how long satellite information has been received for It is desirable wherever possible therefore to verify both your vessels AIS derived position data and other vessels AIS derived position data with visual or radar based observations The proAlS application is intended for use as an installation and configuration tool The application is no
10. only e class of the AIS equipment on each vessel is displayed as A or B e Columns can be sorted into ascending or descending order by clicking on the column heading Ais proAIS COM1 File Select serial port COMI Connect Disconnect Static data GPS status Diagnostics Serial data Software update Other Vessels MMSI Name Call Sign Speed Course Latitude Longitude Distance nm Class 0 01 158 3 50 85972 1 12547 56 57 209084000 GAS LEGACY C4EL2 0 246 50 84167 1 3325 50 26 210286000 0 01 50 83853 1 32951 50 46 219047000 0 0 50 71783 1 05743 63 08 227273000 NORMANDIE FNNO 0 135 50 81133 1 097 58 89 232001340 5 53 50 72407 1 48471 49 93 232002070 0 202 3 50 83438 1 32361 50 78 232002163 10 6 249 3 50 75581 1 38188 51 69 232003081 CITY OF CHICHESTER 12 1 249 50 76446 1 34448 52 51 232003401 RED JET 3 0 20 3 50 76312 1 2959 54 05 232003592 6 7 127 50 73034 1 06989 62 28 232613000 NEDLLOYD HUDSON 129 139 8 50 81726 1 29678 52 19 234509000 39 317 6 50 74576 1 51742 48 13 235000366 10 9 50 78661 1 10762 59 28 235002514 ST CLARE 10 7 50 77367 1 1145 59 46 235003303 12 8 50 83599 1 31331 51 06 235004650 3 9 50 4611 1 31333 65 82 235006680 12 4 50 84786 1 33743 43 81 235007472 FREEDOM 30 0 50 785 1 1 59 58 235007473 ISLAND EXPRESS 0 50 73283 1 1585 59 38 235012119 0 2 50 79132 1 11433 58 92 235031241 TENAX 0 1 50 83453 1 32342 50 78 235031616 0 50 79283 1 1075 59 1 235031617 S
11. system Setup Insert the installation CD and locate the Setup exe file Double click the Setup exe file to begin the installation Follow on screen prompts to install the Net framework if required When the security warning below is displayed select Install AODA Application Install Security Warning Publisher cannot be verified 4 Are you sure you want to install this application 4 proAIS From N Projects Sirius3 Useful Dev and Test Notes Useful P Publisher Unknown Publisher While applications from the Internet can be useful they can potentially harm your computer IF you do not trust the source do not install this software More Information 5 The application will install and launch automatically 6 Start Menu folder and shortcut will be created with the name proAIS This short cut should be used to re launch the application as required Removal The proAIS application can be removed at any time via the windows Control Panel Add or Remove Programs tool DIGITAL IUE LEA EE EE UT YACHT DIGITAL YACHT LTD User guide AIS Connection 1 Launch the proAIS application by navigating to the proAIS shortcut on the Start Menu 2 Theinitial application screen will appear as shown below exact screen display depends on version installed As proAIS COM2 Select serial port GPS status Diagnostics Other Vessels Safety Messages Commands Software update
12. tab This tab shows the raw NMEA 0183 serial data being output by the AIS A typical display is shown below Bis proAIS Options Select serial port AIVD01 1 B 1 mg 5 007u k7ENiO3wUwPO6 0 44 GPRMC 115354 00 4 5116 79017 N 00227 94507 W 0 003 120407 4 65 IAIVDM 1 1 A 1 hBkqP1TP fr68l aPO w 1l02 0 6E GPGBS 115354 00 1 8 1 7 3 0 44 IAIVDO 1 1 B1mg 5GYO007u Tk7ENil 3wsSwP B 0 25 IAIVDO 1 1 B1mg 5GXO007uTjwENilU3wsU wPO6 0 24 AIVDM _1 1 B 1 gt h8kqg P1TP f0681o00 wdl Ow 0 31 IAIVDO 1 1 B1mg 5GX007u Tj ENilO3wtSwP 6 0 23 IAIVDO 1 1 B1mg 5GYO007u T ENilO3wtLI wPO6 0 43 GPRMC 115358 00 A 5116 73014 N 00227 34533 w 0 004 120407 A BA AIVDM _1 1 4 1 gt h8kqg P1TP fr068J4P0 wh1 pOB 0 3D GPGBS 115358 00 1 8 1 7 3 0 46 _B1mg 5 007 usWeENil03wuSwP06 0 41 AA B1mg 5 007usi7ENiO3wuU wPO6 0 41 IAIVDM 1 1 B T hBkqoP1TP frBBJ BOO wIT PS8 0 74 IAI VDO 1 1 B1mg 5GX007u li ENilO3wPSwPUG 0 04 IAIVDO 1 1 B1mg 5CG007u Ihw ENih 3wPU wPOB 0 D1 GPRMC 115402 00 A 5116 73007 N 00227 34555 w 0 003 120407 A 64 IAIVDM 1 1 T hBkq P1 TP fr0B8J OPO vOThOE 0 61 GPGBS 115402 00 1 8 1 7 3 0 4E IAIVDO 1 1 B1mg 5G 007uThwENih 3wQ5wPU6 0 50 IAIVDO 1 1 B1mg 5G 007u Ih ENih03wQU wP06 0 60 T hBkqoP1 TP frBBJe00 v41h1M 0 25 IAIVDO 1 1 B1mg 5GX007u Ih ENih 3wRSwPOE 0 03 ZI v li SRI Add Checksum Connecte
13. tab will be updated to show the newly programmed vessel information The MMSI number will be displayed with a grey background to indicate that it has been programmed and cannot be changed DIGITAL IULII E E LU ON DIGITAL YACHT LTD GPS Status tab This tab shows the status of the internal GPS receiver If the GPS receiver has position fix then the current position speed and course are shown A bar chart of satellite signal strength is also provided Ais proAIS ara Be Options Heb Select serial port COM Connect Diagnostics Other Vessels Safety Messages Commands Software update Serial data GPS Satellite Signal Levels GPS Fix status GPS Locked Latitude 51 16 7894 r3 Longitude 002 27 944 W Course over ground NA An o Speed over ground 0 002kn UTC Time 11 33 42 Satellites in view 9 C No dBHz eo Satellites in use 3 Satellite being used for navigation Satellite not used for navigation 4 11 13 14 31 17 20 23 1 0 0 Satellite ID Satellite signal strength bars are shown in green for satellites that are currently being used for navigation Blue signal strength bars are used to show satellites not currently being used for navigation It is normal for the graph to display a combination of green and blue bars The information on this tab is intended for use during installation of the AIS transponder in order to verify connection of
14. 1 to 9 e 2 Sentence number 1 to 9 e Sequential message identifier 0 to 9 e a AIS Channel A or B e 5 5 Encapsulated ITU R M 1371 radio message 4 e Number of fill bits O to 5 VDO Message number VDO Message description AIS Target Display Information 13 Safety Related Acknowledgement 18 Standard Class B position report Includes MMSI SOG position accuracy lat long COG true heading 24a Class B CS Static data Part A Includes MMSI and vessel name 24b Class B CS Static data Part B MMSI ship type cargo type call sign ship dimensions Regional Assignment Channel Assignment Message NMEA 0183 ACA An AIT250 unit can receive regional channel management information in two ways ITU R M 1371 message 22 or a DSC telecommand received on channel 70 ACA Message Format ACA X IIII I a yyyyy yy a llll Il a1 y1y1y1y1y y1y1 a2 x1 X2X2X2X2 X8 X4x4x4x4 x5 x6 x7 a3 x8 hhmmss ss hh lt CR gt lt LF gt Where e Sequence Number 0 to 9 e 11 Il a Region Northeast corner latitude N S e 1 Region Northeast corner longitude E W e llll llla Region Southwest corner latitude N S DIGITAL DIGITAL YACHT LTD e 1 1 1 1 1 1 1 2 Region Southwest corner longitude e 1 Transition Zone Size X2x2x2x2 Channel A e Channel A bandwidth x4x4x4x4 Channel B e x5 Channel B bandwidth e Tx Rx mode control e
15. DIGITAL IUE OU EU DN Instruction Manual VERSION 1 SmarterTRACK AIT250 Class B Marine Automatic Identification System Part Number ZDIGAIT250 track AIT 250 Doc Ref TUO8 0050 VR1 Questions Call the support line 01179 114 111 DIGITAL YACHT LTD General Warnings All marine Automatic Identification System AIS units utilise a satellite based system such as the Global Positioning Satellite GPS network or the Global Navigation Satellite System GLONASS network to determine position The accuracy of these networks is variable and is affected by factors such as the antenna positioning how many satellites are used to determine a position and how long satellite information has been received for It is desirable wherever possible therefore to verify both your vessels AIS derived position data and other vessels AIS derived position data with visual or radar based observations The compass safe distance of this unit is 0 5m or greater for 0 3 deviation In accordance with a policy of continual development and product improvement the AIT250 hardware and software may be upgraded from time to time and future versions of the AIT250 may therefore not correspond exactly with this manual When necessary upgrades to the product will be accompanied by updates or addenda to this manual Please take time to read this manual carefully and to understand its contents fully so that you can install and operate your AIS system corr
16. GPS Antenna Switch has no function Blue LED function Indicate switch state O Indicate received AIS traffic Save static data to AIS v Configuring the transponder To configure the transponder all of the data fields must be completed and saved to the AIS CAUTION For security reasons the MMSI of the vessel cannot be changed once programmed Do not programme the MMSI unless you are certain you have the correct information Please check the number entered carefully If the MMSI programmed is incorrect the AIS transponder will need to be returned to the supplier for factory reset DIGITAL IUE LEA EE EE UT YACHT DIGITAL YACHT LTD Configuring the transponder continued Enter the vessels information in the appropriate box Ship s name enter the name of the vessel 20 characters maximum Call Sign enter the vessel s radio call sign 7 characters maximum MMSI number enter the vessel s Maritime Mobile Service Identity number Enter the vessels dimensions as follows o Dimension A distance from bows to GPS antenna location to the nearest meter o Dimension B distance from the GPS antenna location to the stern to the nearest meter o Dimension C distance from the port side to the GPS antenna location to the nearest meter o Dimension D distance from the GPS antenna to the starboard side to the nearest meter Select the most appropriate vessel type from the drop down menu CAUTION If no MM
17. GPS starts outputting valid position information and the AIT250 unit transmits its first position report message 18 the yellow LED will go out note that this process may take up to 30 minutes depending on the switch on state of the GPS receiver When the yellow LED goes out the green LED will illuminate indicating that the unit is now operating correctly Switch functions The blue switch on the front of the unit can be configured either to trigger transmission of a Safety Related Message or to place the unit into Silent mode This choice is made during configuration of the unit using the proAIS application please refer to the proAIS user guide for further information on the configuration options When configured to transmit a Safety Related Message the button will initiate broadcast of an AIS message containing the vessels MMSI along with the text MAYDAY MAYDAY The button must be pressed Red Fault ares tena Blue for at least two seconds to initiate this transmission and the blue LED Status will illuminate to indicate the message has been sent Additional Safety Related Messages can not be sent until the blue LED has extinguished which will occur one minute after an SRM has been sent Green Unit operating OK Yellow Warning When configured to place the unit into Silent mode each press of the switch will toggle the AIS transmitter on or off The switch must be depr
18. OR ANY DIRECT INDIRECT INCIDENTAL SPECIAL EXEMPLARY OR CONSEQUENTIAL DAMAGES INCLUDING BUT NOT LIMITED TO PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES LOSS OF USE DATA OR PROFITS OR BUSINESS INTERRUPTION HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY WHETHER IN CONTRACT STRICT LIABILITY OR TORT INCLUDING NEGLIGENCE OR OTHERWISE ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE This software uses components and source code developed by other companies or groups Microsoft Net Framework V2 0 Copyright 2005 Microsoft Corporation ZedGraph Graphing component dll http zedgraph org Provided under the GNU Lesser General Public License All trademarks mentioned in this document are the property of their respective owners Copyright 2008 Digital Yacht Ltd DIGITAL IUE LEA EE EE UT YACHT DIGITAL YACHT LTD Installation guide Prerequisites The proAlS application is designed to operate with Microsoft Windows 200 XP and above Recommended minimum system requirements are e Microsoft Windows XP SP2 e Display resolution of at least 1024 x 768 e Atleast RS232 serial port or USB to serial converter already installed you are using a USB to serial converter please ensure this is fully installed before proceeding This software uses the Microsoft Net Framework V2 0 The framework will be automatically installed during setup if not already present on the
19. SI is entered MMSI is set to 000000000 then the AIS transponder will operate in receive only mode The vessels own position will not be transmitted An MMSI must be entered to allow the AIS transponder to transmit its own position to other vessels Select the switch functions you require Depending on your software version some options may not be available Some units may not be fitted with a switch in which case this section of configuration can be skipped Select the Press switch to send Safety Related Message option if you want to configure the unit to transmit an AIS Safety Related Message when the switch is pressed The switch must be pressed for two seconds to initiate this message which is broadcast with the vessels MMSI and the text MAYDAY MAYDAY Please note this should not be considered as a primary means of distress call Select the Make switch to disable transmitter option if you will use an external latching switch for Silent mode control Whilst the switch is closed the transmitter is disabled and other vessels will not receive your position via AIS The receiver remains operational The amber LED will illuminate to indicate the transmitter is disabled Select the Press switch to toggle transmitter on off if you will use a push button switch to toggle Silent mode on and off The switch must be held for two seconds to toggle the transmitter off or on When the transmitter is disabled other vessels will not receive your posit
20. T CECILIA 12 7 50 75933 1 17433 57 99 235031622 25 8 50 76667 1 12347 59 39 244210000 0 50 70718 1 04522 63 82 247007000 COSTANZA WONSILD 0 50 83772 1 32837 50 52 2 1 1 2 2 2 1 12 2 0 1 1 0 0 12 12 1 1 12 DIGITAL ALLE E E ERU UU YACHT DIGITAL YACHT LTD Safety messages tab This tab displays safety related messages received from other AIS equipped vessels in the area The tab displays two message types e Addressed Safety Related Message VDL Message 12 e Broadcast Safety Related Message VDL Message 14 The UTC time the message was received along with the MMSI of the sender will be displayed along with the text contents of each message Bis proAIS COM2 Ele Options Help Select serial port COM2 Connect Disconnect Static data GPS status Diagnostics Other Vessels Safety Mes Commands Software update Serial data Time UTC From MMSI Message type Message contents DIGITAL EE LU UT YACHT DIGITAL YACHT LTD Commands tab The commands tab provides access to software controlled features of the AIT250 transponder Depending on the AIS software version the following commands may be available Rig proAIS COM2 Eie Options Help Select serial port Static data GPS status Diagnostics Other Vessels Safety Messages Commands Software update Serial data
21. YPE PLUG c PINS NUMBER NOTES DO NOT SCALED 2WAYS POWER BLUE BLACK 9 BROWN RED 1 1 POWER CABLE 1000mm 2 CONDUCTOR CABLE 18AWG OD 0 23 5 84MM 7WAYS DATA D TYPE PINS NUMBER PVC INSULATION UNSHIELDED PVC JACKET TERR REG T m PLUG BEES TINNED COPPER CONDUCTORS FARNELL 721 386 RS232RXD BLUE 13 3 2 DATA CABLE 1000mm GND GREEN 14 5 7 CONDUCTOR CABLE 24AWG OD 0 18 45MM PVC INSULATION UNSHIELDED PVC JACKET RS422 TXA ORANGE 2 FREE END TINNED COPPER CONDUCTORS so FARNELL 280 4860 RS422 TXB BLACK 10 FREE END RS422 RXA C BROWN 3 FREE END 3 15 PINS D PLUG MALE RS 281 5940 RS422 RXB WHITE 11 FREE END PLAIN PLASTIC 15 WAYS D SHELL WITH SCREW LOCK rue 4 9 PINS D SOCKET FEMALE eg RS 486 2764 d eo 29 Software Radio Technology PLAIN PLASTIC 9 WAYS D SHELL WITH SCREW LOCK RS 204780 is aca aoa E me POWER AND DATA E SP E CABLE ASSEMBLY mem LD 2122 Med SALE 1 4 Note Terminate and insulate all unused connections NMEA output is via the RS422 connections ORANGE NMEA OUT Connect to plotter NMEA input BLACK NMEA OUT Connect to plotter NMEA input Ensure plotter is set to receive NMEA data at 38400 baud DIGITAL YACHT DIGITAL YACHT LTD Glossary ACA ACK ACS AFSK ALR AtoN AIS BIIT BNC CSTDMA COG CR CS CSTDMA DC DGNSS DSC GLONASS GNSS GMSK GPS HF IMO IEC LED LF LNA MF MKD MMSI MPE NMEA PC P
22. a tab and verifying that a valid MMSI has been entered If the MMSI is 000000000 then it has not been programmed o GPS position fix has a red cross the GPS has not acquired a position fix Please allow up to 5 minutes for a fix to be acquired If the red cross is still present check the GPS antenna is correctly connected and has a clear view of the sky o AIS has transmitted a position report has a red cross the unit has not yet transmitted its position Please allow up to 5 minutes after GPS fix has been acquired for the green tick to appear If the red cross is still present after this time please refer to the active alarms section below The AIS will not transmit unless it has acquired GPS fix and has a valid MMSI programmed o AIS has received a position report a position report from another vessel has been received If there is no other AIS equipped vessel in the area the red cross will remain against this item If other AIS equipped vessels are present and the red cross remains please check the VHF antenna connections AIS Transponder Active Alarms Any active alarm messages generated by the AIS unit are shown here e Note that alarms may take up to 1 minute to clear from this display once their source has been corrected DIGITAL YACHT DIGITAL YACHT LTD e ltis normal for GPS related alarms to be displayed when the AIS is first switched on These alarms will clear once GPS position fix is acquired e Please refer to the trou
23. and NMEA serial interfaces This information is sent using the GPRMC sentence and can be used to provide your vessels GPS position to a chart plotter connected to the unit A higher position update rate once per second is available as an option and will result in a more accurate display of your vessels position speed and course on a connected chart plotter To use this option select the Output GPS data every second option and click Update e Alarm output options o default the AIS transponder will output the status of all alarms every minute using AIALR sentences The unit can optionally be configured to only output active alarms using the radio buttons The Update button should be clicked to send new settings to the AIS transponder DIGITAL YACHT DIGITAL YACHT LTD DIGITAL DIGITAL YACHT LTD Troubleshooting guide Problem Possible cause Solution General No AIS is detected The AIS is not connected to the serial port selected from the drop down menu The AIS is not powered The serial cable is damaged or faulty Check the number of the serial port the AIS is connected to and retry Check that the power connected and switched on supply is Try an alternative serial cable Cannot communicate with unit Static Data tab The AIS is not connected to the serial port selected from the drop down menu The Serial cable is damaged or faulty Check the number of the serial por
24. bleshooting section for a description of each alarm message AIS Transponder Information This section shows technical information about the connected AIS transponder including software and firmware version information Depending on the AIS software version the ability to display the GPS firmware version may not be present If shown clicking the Get version button will retrieve the GPS firmware version Please note that this operation may result in a temporary loss of GPS fix LED Status This display may not be enabled depending on the software version of your AIS transponder This section mirrors the LED display on the front of the AIS transponder and is useful when the unit is installed in a location where the physical LEDs are not easily visible Internal Data This display may not be enabled depending on the software version of your AIS transponder This section provides internal diagnostics data from you re AIS transponder Your dealer may request this information if diagnosing any problems with your installation Statistics This display may not be enabled depending on the software version of your AIS transponder This section shows the number of AIS messages received and transmitted on each of the AIS channels You can use this information to verify that the transponder is successfully receiving and transmitting data when other AIS equipped vessels are in range DIGITAL IUE LEA EE EE DU YACHT DIGITAL YACHT LTD Serial data
25. d 38400 Baud Enter commands below e NMEA command sentences can be sent to the unit by entering them in the lower text box and clicking the Send button proAIS will calculate and append the NMEA checksum to the sentence if the Add Checksum check box is checked In this case enter a NMEA sentence without including the asterisk that precedes the checksum e Serial data can be logged to a file by clicking the Log to file button and entering a file name and location in the dialog box o Logging to file will continue if other tabs are selected after logging has been started o Logging to file will cease when the Stop logging button is clicked e serial data display can be paused by clicking the pause button at the bottom right hand side of the data window Clicking the button a second time will resume output of the live serial data e Transmitted AIVDO messages are indented for easy identification DIGITAL IUE LEA EE EE UT YACHT DIGITAL YACHT LTD Software update tab This tab provides the facility to update the AIS transponder s internal software Pens e Big proAIS Eile Options Select serial port 1 Serial data 1 Select update file 2 Start Update Update progress Please select update file Connected 38400 Baud CAUTION Only perform a software update using an update file intended for use with the AIT250 product Do not interru
26. ectly Information contained in this manual is liable to change without notice FCC Compliance Use of this equipment on US Flagged vessels is currently not authorised as Class B AIS has yet to be approved by the USCG 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 e Reorient or relocate the receiving antenna e Increase the separation between the equipment and receiver e Connect the equipment into an outlet on a circuit different from that to which the receiver is connected e Consult the dealer or an experienced radio TV technician for help The AIT250 does not contain any user serviceable parts Repairs should only be made by an authorized Digital Yacht service agent Unauthorised repairs or modifications could result
27. edge an alarm condition reported by the AIT250 ACK message format ACK xxx hh lt CR gt lt LF gt Where unique alarm number DIGITAL IULII E E LU ON DIGITAL YACHT LTD Antenna connections GPS Antenna There is a TNC female bulkhead connector mounted under the unit top cover This port provides the 5V DC feed for the active GPS antenna required by the AIT250 unit The AIT250 is supplied with a compact patch GPS antenna with FME connector and 10m FME TNC connect cable VHF Antenna There is a BNC female bulkhead connector mounted under the unit top cover The AIT250 is supplied with a specially tuned VHF Heliflex antenna 20m cable with fitted BNC male connector Antenna types and mounting Please see Appendix A for antenna details DIGITAL IUE LEA EE EE DU DIGITAL YACHT LTD Electrical Connections 5 e 100mm MODIFICATIONS DESCRIPTION DATE 1 FIRST ISSUES MK 24 2 6 MK 2196 1 4 KY 2 A 2 EN S K M Io ZH TRANSPONDER END PINS CONNECTION A USER END CABLE WIRE COLOUR 15WAYS D T
28. erformance standards methods of testing and required test results e EN 301 843 1 v2 1 Electromagnetic compatibility and Radio spectrum Matters ERM Electromagnetic Compatibility EMC standard for marine radio equipment and services Part 1 Common technical requirements e EN 50383 2002 Basic standard for calculation and measurement of electromagnetic field strength and SAR related to human exposure from radio base stations and fixed terminal stations for wireless telecommunications system 110MHz 40GHz e EN60950 1 2002 Information technology equipment Safety Part 1 General requirements Declaration of Conformity Digital Yacht declares that this product is in compliance with the essential requirements and other provisions of the R amp TTE directive 1995 5 EC The product carries the CE mark notified body number and alert symbol as required by the R amp TTE directive The product is intended for sale in the following member states Intended Country of Use Mice H Mes E H N GE C asc E ce DIGITAL IUE LA EE E E O UN YACHT DIGITAL YACHT LTD Introduction How AIS Works 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 craft Position i
29. essed for two seconds to change the state of the transmitter When the transmitter is off the yellow Warning LED and blue Status LEDs will be illuminated and the transponders position will not be broadcast to other vessels The position of other vessels will still be received by the unit Warning and fault states If the unit has not been able to transmit a position report during the last expected two reporting intervals i e the nominal reporting interval cannot be maintained for operational reasons such as a Message 23 quiet period high channel load conditions etc the yellow LED will illuminate This is a warning condition only and indicates that your vessels position is not currently being reported to other vessels Reception of other vessel AIS information by the AIT250 is not affected When the unit is able to commence reporting the yellow LED goes out If a fault occurs the red LED will illuminate This may illuminate briefly if the power supply is interrupted or if the VHF antenna characteristics are briefly affected If the Red LED illuminates continuously the unit should be assumed to be faulty and should either be switched off power removed or if this is not practical any other vessel position information derived from the unit should not be used and it should also be assumed that the unit is not transmitting valid position information for your vessel The unit should be examined by a competent Digital Yacht approved equipment mainta
30. fety related messages via a short message service SMS facility Message lengths are variable with static and voyage related information being transmitted less often A Class B unit will transmit its MMSI Call Sign and Name length and beam ship type time course over ground COG speed over ground SOG and heading Built In Test The AIT250 unit is equipped with Built In Integrity Testing BIIT BIIT tests run continuously or at appropriate intervals simultaneously with the standard functions of the equipment The BIIT detects any failure or malfunction that will significantly reduce integrity or stop operation of the AIT250 unit The tests include e AIS TX malfunction synthesiser not locked and TX time out not exceeded e Antenna VSWR exceeds limit e Rx channel 1 malfunction synthesiser not locked e Rx channel 2 malfunction synthesiser not locked e Internal GPS not in use e No valid SOG information e No valid COG information e Background noise gt 77dBm e GPS failure e VSWR exceeding the maximum allowed level e input voltage is out of the specified range LED Indicators Power DIGITAL IUE LEA EE EE UT YACHT DIGITAL YACHT LTD This is a green LED which indicates when lit that power has been connected correctly to the transponder that the transponder hardware has been configured that the operating software is present that the CPU has booted up the application software is running TX Timeout Thi
31. for full details of these AIS messages Serial Port Input Output There are two serial ports one presenting RS422 format and the other RS232 format Data can be input from either or both ports The serial port interface s output e At power up boot loader and main application splash text screens including version numbers and memory status e Asa VHF Data Link Message VDM all incoming VHF Data Link VDL data received by the AIT250 e The VHF data link own vessel VDO messages sent by the AIT250 over the VHF Data Link e AIS regional channel assignment messages ACA received These are derived from an incoming VHF Data Link message message 22 or a DSC message e AIS channel management information source ACS messages e Alarm messages ALR TXT The data interface will accept e Personality programming messages e Alarm acknowledgement messages DIGITAL IUE LEA EE EE DU DIGITAL YACHT LTD Power up messages On power up the unit will report details of the firmware versions residing in the unit VHF data link messages NMEA 0183 VDM Receipt of a VHF Data Link VDL message on either AIS radio channel causes a VDM message to be output via the data port Please see IEC 61193 2 Annex B for a list of messages VDM Message Format VDM x1 x2 x3 a S S x hh lt CR gt lt LF gt Where e Total number of sentences needed to transfer the message 1 to 9 e X2 Sentence number 1 to 9 e Sequential me
32. iner at the earliest opportunity Data port messages The data port will output the following e At power up boot loader and main application splash text screens including version numbers and memory status e Details of relevant AIS transmissions received DIGITAL IUE LEA EE EE UT YACHT DIGITAL YACHT LTD e Details of AIS transmissions sent e Details of channel management messages received e Alarm messages generated by the BIIT function The data port will accept the following inputs e Programming information e Alarm acknowledgements Please see the Data Interface section of this manual for more details of the data port messages When in operation an AIS unit e Uses one of two VHF channels within the international marine band allocation channel 87B 161 975MHz or channel 88B 162 025MHz to regularly transmit information such as the vessel position Maritime Mobile Service Identity MMSI name speed course etc e Receives similar information from other AIS equipped vessels within VHF range and outputs that information for use by an external display medium AIS enabled chart plotter PC using AIS enabled chart plotter software etc Information Transmitted and Received A Class A unit will transmit its IMO number if known MMSI Call sign and Name length and beam ship type time course over ground COG speed over ground SOG heading navigational status rate of turn draught cargo type destination and sa
33. ion via AIS The receiver remains operational The amber LED will illuminate to indicate this transmitter is disabled Select the Switch has no function option if you will not use a switch to control Silent mode or transmission of a Safety Related Message Select the function of the blue LED indicator you require Select the Indicate switch state option if you want the blue LED to illuminate when the a Safety Related Message has been transmitted or when the unit is in Silent mode following use of the switch as described above Select the Indicate received AIS traffic if you want the blue LED to flash each time an AIS report from another vessel is received When you have entered all of the vessel s data click the Save static data to AIS button to programme this configuration into the AIS transponder Save static data to AIS v DIGITAL IUE LEA EE EE UT YACHT DIGITAL YACHT LTD A warning will be displayed asking you to verify the MMSI number Please check the number displayed is correct before proceeding If the number is incorrect click the No button to cancel programming of the MMSI MMSI Confirmation WARNING You are about to programme the MMSI of this AIS unit You cannot change this value once programmed Is the MMSI 123456789 correct Click the Yes button if the MMSI is correct If you select No the static data will not be updated and you can correct the MMIS before proceeding The static data
34. ith the supplied antenna or any standard marine VHF antennas having a maximum gain of 3dBi Antennas not included in this list or having a gain greater than 3dBi are strictly prohibited for use with this device The required antenna impedance is 50 ohms Licensing and Maritime Mobile Service Identity MMSI IMPORTANT In most countries the operation of an AIS unit is included under the vessel s marine VHF licence provisions The vessel on to which the AIS unit is to installed must therefore possess a current VHF radiotelephone licence which lists the AIS system and the vessel Call Sign and MMSI number An MMSI number is required in order for the AIT250 transponder to operate Please contact the relevant authority in your country for more information DIGITAL IUE LEA EE EE DU DIGITAL YACHT LTD Product Specification Parameter Dimensions Weight Power GPS Receiver AIS Internal Electrical Interfaces Connectors VHF Transceiver Output Power Channel Bandwidth Channel Step Modulation Modes Bit rate RX Sensitivity Environmental Indicators Operator Controls Standards Value 190 x 135 x 83 mm L x W x H 1450g DC 10 8 15 6V Average power consumption 4W Peak current rating 2A IEC 61108 1 compliant RS232 38 4kBaud bi directional RS422 NMEA 38 4kBaud bi directional VHF antenna connector GPS antenna connector RS232 RS422 Power Transmitter x 1 Receiver x 2 One receiver time shared between
35. iting of the static data GPS Status tab o Shows the status of the internal GPS receiver including position fix data and satellite signal strength graph Diagnostics tab o Shows the status of key system diagnostics Used to troubleshoot installation of the transponder and verify correct operation Other Vessels tab o Shows information about other vessels in the area received from the AIS transponder Safety messages tab o Displays safety related messages received from other AIS equipped vessels Commands tab o Provides access to software controlled features of the AIT250 AIS transponder Serial Data tab o Shows the raw NMEA serial data being generated by the transponder Provides a facility to log this data to a file for later analysis o Allows NMEA commands to be sent to the transponder Software update tab o Provides facilities to upgrade the transponder software from an update file Subsequent sections describe the functions of each tab in more detail DIGITAL IUE LEA EE EE UT YACHT DIGITAL YACHT LTD Menu Bar The menu bar provides basic program options Under the File menu the Open log file option allows playback of a log file previously recorded using proAIS A log file can be recorded using the tools provided on the Serial Data tab During log file playback only data recorded in the log is available and most buttons in the application will be inoperative The Open log file option is not available whils
36. nd blue LEDs being illuminated POWER TIMEOUT ERROR STATUS e O O O Antennas The AIT250 unit requires VHF and GPS antennae independent from those in use for other purposes Please see Appendix A for details of the antennae required and supplied as standard with the unit Maintenance WARNING Unauthorised opening of the AIT250 system will invalidate the warranty CAUTION Avoid using chemical solvents to clean the AIT250 as some solvents can damage the case material NOTE The AIT250 contains no user serviceable parts Contact your Service Agent for repair if replacing the fuse fails to make the equipment serviceable DIGITAL ALIAUNE A AUN EE LU UT YACHT DIGITAL YACHT LTD Serial Data Interface Power Connection Data Connection There is a 15 way D type male connector mounted under the transponder top cover The standard data or power and data cable assembly provided mates with this connector Power 12V DC 9 6 15 6V is connected to the transponder power supply input via the cable assembly LD1873 Data A minimum keypad and display MKD unit chart plotter or other display device may be connected to the AIT250 OEM unit via the appropriate cable assembly The default baud rate of the data link is 38 4kBaud with 8 data bits one stop bit and no parity No handshaking is used The data interface conforms to IEC 61162 1 VDM VDO ACA ACS ALR TXT and ACK messages conform to NMEA 0183 Please refer to NMEA 0183
37. nna using the FME connector The antenna could also be rail mounted with a suitable 3rd party or custom bracket e Fitthe rubber boot supplied over the threaded assembly to prevent water ingress e The GPS antenna has a free view through 360 degrees with a vertical angle of 5 to 90 degrees above the horizon e As the received GPS signal is very sensitive to noise and interference generated by other onboard transmitters ensure that the GPS antenna is placed as far away as possible from radar Inmarsat and lridium transmitters and ensure the GPS antenna is free from direct view of the radar and the Inmarsat beam e Itis also important that the MF HF and other VHF transmitter antennas are kept as far away as possible from the GPS antenna It is good practice never to install a GNSS antenna within a radius of 5 meters from these antennas The AIT250 can also utilise other passive ie non NMEA outputting GPS antennas such as Garmin s GA29 fitted with the relevant TNC connector The GPS antenna used must be of the active type i e it should incorporate an LNA and must be suitable for marine shipboard applications index of protection ruggedness means of mounting etc An antenna should be selected with a gain in dB depending on the length of cable between the antenna and the AIS unit after subtraction of cable and connector losses a minimum total gain of 25 dB should be available at the AIT250 unit GPS antenna connector Please note that we cannot s
38. om networks such as the Global Positioning Satellite GPS or the Global Navigation Satellite System GLONASS in order to determine the location of the AIS unit and thus the vessel to which it is fitted The AIT250 utilises the GPS satellite network DIGITAL IUE LEA EE EE DU YACHT DIGITAL YACHT LTD Installing the AIT250 unit WARNING Do not connect the AIT250 unit to a mains line AC electrical supply as an electric shock or fire hazard could result CAUTION Do not connect the AIT250 unit to a DC supply exceeding 15 6 V or reverse the supply polarity Damage to the unit may result CAUTION The AIT250 unit is designed for operation in the temperature range 25 C to 55 C Do not install or use the AIT250 unit in environments which exceed this range CAUTION Do not install the AIT250 unit in an environment where it can be subject to excessive exposure to water Electrical connections Warning Only the RF data and power cables provided with the AIT250 unit should be used to connect antennas power and display devices so as to maintain the integrity of the enclosure Please see the drawings section of this manual for details of the power data and RF cables supplied Remove the top of the transponder unit eight screws as shown Using the two co axial leads supplied connect the down lead from a VHF antenna to the VHF antenna port and connect the down lead of a GPS antenna to the GPS antenna port Please see Appendix
39. pply and therefore it is recommended that the unit is not attached to metal parts of the vessel Special arrangements will need to be made on sieel and aluiminium vessels to isolate the case from the hull DIGITAL IULII E E LU ON YACHT DIGITAL YACHT LTD Programming the transponder Programming software Before the AIT250 can be used it requires personalisation This is done via the AIT250 proAlS software package which is supplied as an accessory The proAlS user guide contains more detail on configuration of the transponder included at the end of this handbook This software is designed to be installed on a PC and to use the data lead provided as standard with the AIT250 unit If the PC being used for programming does not have a 9 pin serial port then a commercially available USB to serial adaptor may be required This connects between the supplied data lead and the PC Configuration The AIT250 personalisation data required is the ship s MMSI the ship s name its dimensions position reference type and call sign Please refer to the proAIS user guide for more information on configuration and installation diagnostics DIGITAL IUE LEA EE EE DU DIGITAL YACHT LTD Using the transponder Switching on When the 12V supply is switched on all four LEDs visible on the front panel of the unit will illuminate twice for a period of one second on each illumination The red and blue LEDs will then go out When the internal
40. pt the power to the unit or disconnect from the PC during the update process unless instructed to do so by the proAIS application Click the Select update file button and navigate to the update file This will have the extension hex Click the Start update button Follow the instructions provided underneath the update progress bar Depending on the AIS software version you may be requested to power cycle the unit at two points in the process Turn the power supply to the AIS off and back on again at these requests Do not disconnect the serial connection to the PC Once the Update completed is displayed the AIS is ready for use Please verify the information shown on the static data tab is correct after any software update DIGITAL IUE LEA EE EE UT YACHT DIGITAL YACHT LTD Other vessels tab This tab shows information received from other AIS equipped vessels in the area e The MMSI of each vessel is shown o Vessels equipped with Class A AIS have the MMSI displayed in black text o Vessels equipped with Class B AIS have the MMSI shown in blue text e name and call sign of each vessel is shown o Due to the way AIS operates this information may take some time to appear e speed in knots course in degrees decimal latitude and longitude are shown for each vessel e approximate distance to each vessel is shown when the connected unit has a GPS fix Please note that this is an approximate distance for indication
41. s derived from the GPS network and communication between vessels is by Very High Frequency VHF digital transmissions A sophisticated and automatic method of time sharing the radio channel is used to ensure that even where a large number of vessels are in one location blocking of individual transmissions is minimised any degradation of the expected position reporting interval is indicated to the user and even if the unit suffers extreme channel overload conditions it will always recover to normal operation AIS Classes There are two classes of AIS unit fitted to vessels Class A and Class B In addition AIS base stations may be employed by the Coastguard port authorities and other authorised bodies AIS units acting as aids to navigation A to Ns can also be fitted to fixed and floating navigation markers such as channel markers and buoys Class A units are a mandatory fit under the safety of life at sea SOLAS convention to vessels above 300 gross tons or which carry more than 11 passengers in International waters Many other commercial vessels and some leisure craft also fit Class A units Class B units are currently not a mandatory fit but authorities in several parts of the world are considering this Class B units are designed for fitting in vessels which do not fall into the mandatory Class A fit category The AIT250 is a Class B unit Position Information Source As noted above the marine AIS system uses position information derived fr
42. s is a yellow LED which indicates when lit that the CSTDMA transmitter is prevented from transmitting Reasons for this include the following e The transponder s internal GPS receiver is not operating or is not yet ready 1 requires that a class B CSTMA transponder shall not transmit if its internal position sensor is not operating e The transponder was unable to transmit an AIS message due to the channel being already occupied e g by transmissions from other AIS transponders e transponder is in Silent mode Error This is a red LED which indicates when lit one of the following status conditions is possible e Transmitter lockout timer 1 second maximum has operated e GPS is unable to gain lock after 30 minutes e VHF antenna VSWR is out of range e Power supply is out of range e Background noise level is above the threshold level 77dBm DIGITAL IULII E E LU ON YACHT DIGITAL YACHT LTD Status This is a blue LED which either indicates that a Safety Related Message has been transmitted or that the unit is in Silent mode The condition indicated by the blue LED is determined during configuration of the unit by the switch option selected Please refer to the Switch functions section of this manual for more detail e Transmission of a Safety Related Message is indicated by both the green and blue LEDs being illuminated POWER TIMEOUT ERROR STATUS eooe e Silent mode is indicated by both the yellow a
43. smitter Universal Time Co ordinated AIS VHF Data Link Messages AIS VHF data link own vessel messages Very High Frequency Voltage Standing Wave Ratio DIGITAL ALIE E ERU UU DIGITAL YACHT LTD Appendix A Antennas and Antenna Mounting GPS Antenna We supply a compact sensitive GPS antenna with the AIT250 The GPS antenna to be used for AIS use must be a dedicated antenna i e not shared with any other GPS receiver Installation of the GPS antenna is critical for the performance of the built in GPS receiver which is used for timing of the transmitted time slots and for the supply of navigational information should the main navigational GPS fail We strongly recommend that e supplied GPS antenna and cable is used Do not cut or splice the coax cable or lengthen the assembly e The GPS antenna is mounted in an elevated position and free of shadow effect from the ship s superstructure On a sail boat the pushpit rail or aft deck is an ideal location The radar arch on a motor boat is ideal If in doubt make a temporary installation and use the aisPRO software to view the satellite signal strengths The antenna can be thru deck mounted by drilling a 13mm clearance hole and using the supplied fixing not to mount the antenna to the surface Note that the nut can be reversed for thicker substrates We recommend the use of a silicon sealant to ensure that the deck remains watertight The supplied cable attaches to the ante
44. sor fault OR acquire GPS position fix Follow troubleshooting guide for GPS SOG data fault OR tab COG data fault OR Active alarm shown The VHF antenna is not connected or is Check the VHF antenna connections not suitable for use with the AIS VHF Antenna VSWR fault Check the AIS installation manual against the specification of your VHF antenna Active alarm shown The power supply to the AIS is outside Check the power supply voltage to the Channel B Noise fault Active alarm shown with message not listed here The VHF antenna is not connected or is not suitable for use with the AIS AIS has an internal fault the specified range AIS against that specified in the installation manual 12V Power supply fault Active alarm shown The AIS cannot transmit because the Check the VHF antenna connections background noise level is too high Channel A Noise fault OR Check the AIS installation manual against the specification of your VHF antenna In very busy shipping channels this alarm may appear temporarily This is normal operation for Class B AIS Check the VHF antenna connections Check the AIS installation manual against the specification of your VHF antenna Please contact your dealer Digital Yacht Ltd is at the forefront of technology innovation and for this reason reserves the right to alter without notice the specification design or conditions of supply of any product of service
45. ssage identifier 0 to 9 e AIS Channel A or B e 5 5 Encapsulated ITU R M 1371 radio message e Number of fill bits O to 5 VDM Message Types For example the information contained in the s s portion of the VDM Encapsulated ITU R M 1371 radio message Note that messages 5 and 19 may be sent as multi part messages using the x1 x2 and x3 parameters for message sequence control VDL Message number VDM Message description AIS Target Display Information 1 2 9 9 18 21 position report 4 base station report 5 voyage related data 19 Class B extended data Safety message handling 12 addressed safety related 14 broadcast safety related External Application handling 6 binary addressed 8 binary broadcast System control 7 binary acknowledge INFO 10 UTC and data inquiry INFO 11 UTC and data response INFO 13 safety related ack INFO DIGITAL 00100 WEA 0 0 8 0 UAN DIGITAL YACHT LTD VDL Message number VDM Message description 15 interrogation INFO 16 assignment mode command INFO 17 DGNSS corrections INFO 20 data link management INFO 22 channel management INFO Note that messages 5 and 19 may be sent as multi part messages VHF data link own vessel messages NMEA 0183 VDO This message describes the own vessel message being sent VDO Message Format VDO x1 x2 x3 a S S x hh lt CR gt lt LF gt Where e Total number of sentences needed to transfer the message
46. t a navigation tool and should not be used as such LICENSING IMPORTANT In most countries the operation of an AIS unit is included under the vessels marine VHF licence provisions The vessel on to which the AIS unit is to installed must therefore possess a current VHF radiotelephone licence which lists the AIS system and the vessel Call Sign and MMSI number Please contact the relevant authority in your country for more information In accordance with a policy of continual development and product improvement the AIT250 hardware and software may be upgraded from time to time and future versions of the AIT250 may therefore not correspond exactly with this manual When necessary upgrades to the product will be accompanied by updates or addenda to this manual Please take time to read this manual carefully and to understand its contents fully so that you can install and operate your AIS system correctly Information contained in this manual is liable to change without notice Digital Yacht Ltd disclaims any liability for consequences arising from omissions or inaccuracies in this manual and any other documentation provided with this product DISCLAIMER THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS AS IS AND ANY EXPRESS OR IMPLIED WARRANTIES INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE F
47. t a serial connection is made Please disconnect from the AIS transponder to enable this option Ais proAIS File Options Open log file Exit Under the Options menu item checking Beep on AIS Transmission will cause the PC to emit a sound every time the connected AIS unit transmits The Force connection option is used for diagnosing connection issues and should be left unselected This feature should be used under guidance from your technical support contact AIS proAIS The Help gt About menu item displays the program splash screen and version information DIGITAL IUE LEA EE EE DU YACHT DIGITAL YACHT LTD Static Data Tab This tab shows the current configuration of the AIS transponder and allows the configuration to be programmed during installation into a vessel When an un configured AIS transponder is connected for the first time the display will be similar to that shown below fis proAIS COM2 Ele Options Select serial port COM2 Connect Disconnect GPS status Diagnostics Other Vessels Safety Messages Commands Software update Serial data Ship s Name Vesseltype 37 Vessel Pleasure craft Call Sign MMSI Number 000000000 Vendor ID Ship s dimensions amp GPS Antenna location Switch function Press switch to send Safety Related Message Make switch to disable transmitter Press switch to toggle transmitter on off
48. t the AIS is connected to and retry Try an alternative serial cable No static data is displayed The unit has not yet been configured Follow instructions in the Static data section to configure the unit The MMSI can not be changed The MMSI programmed has already been The MMSI can only be programmed once If it is incorrect please contact your dealer The static data is incorrect Data was entered incorrectly Re enter the static data and save to the AIS The MMSI cannot be updated GPS tab No GPS position information displayed or graph shows only blue bars is The unit has not acquired GPS fix The GPS antenna connected is not correctly The GPS antenna does not have a clear view of the sky GPS antenna is unsuitable for use with AIS Check the GPS antenna connections and power cycle the AIS unit Check the GPS antenna location and make sure it s view of the sky is not obstructed Check the AIS installation manual against the specification of your GPS antenna Diagnostics tab Red cross against a status item Unit configuration or antenna connections See Diagnostics tab section of this user guide for advice on each item Active alarm shown The unit has not acquired GPS fix Wait at least five minutes for the unit to DIGITAL IUE LEA EE E E UU YACHT DIGITAL YACHT LTD Problem Possible cause Solution Position sen
49. the GPS antenna DIGITAL ALIAUNE A AUN EE LU UT YACHT DIGITAL YACHT LTD Diagnostics tab The diagnostics tab shows key status information from the AIS transponder This information can be used to quickly verify that the transponder has been installed correctly and is operational Bis proAIS File Options Select serial port COM2 Static data GPS status i Diagnostics Other Vessels Safety Messages Commands Software update Serial data AIS Transponder status AIS Transponder Information Statistics AIS software version Received Transponder MMSI valid messages channel GPS Position Fix FPGA version 5 Received AIS has transmitted a position report wA GPS firmware version messages channel B AIS has received a position report Transponder Serial Number 0100663302 Transmitted messages channel LED status AIS Transponder active alarms TX SRM Transmitted POWER TIMEOUT ERROR STATUS messages e e Q channel B Internal data Reset Statistics Supply voltage Internal BV supply Internal 3 3 supply RSSI Rx 1 RSSI 2 TX Forward power TX Reverse power Connected 38400 Baud AIS Transponder Status e Atick next to the items in this area indicates correct operation e lfaredcross is shown then some action may be required o Transponder MMSI valid has a red cross check the MMSI of the unit is configured by selecting the Static Dat
50. upport the use of 3rd party antennas VHF antenna for AIS use We supply a Heliflex antenna tuned for use on AIS frequencies with the AIT250 We recommend the use of this antenna which is supplied with an L shaped mounting bracket and 20m cable fitted with BNC connector Do not cut splice or shorten this cable unless you are qualified to refit a BNC connector The supplied connector is moulded on and cannot be refitted The cable should not be lengthened The antenna should be mast top mounted or can be pushpit mounted Remember the higher the antenna the better the range On a motor boat mount as high as possible If an alternative VHF antenna is to be employed for AIS use e Must be a dedicated antenna not shared with any other VHF transmitter receiver e Must be suitable for marine shipboard applications index of protection ruggedness means of DIGITAL TELE E RE E EU YACHT DIGITAL YACHT LTD mounting etc e Should be omni directional and vertically polarised with maximum gain of 3dBi and bandwidth sufficient to maintain VSWR 1 5 over the frequency range 156 163 MHz As a minimum the 3dB bandwidth must cover the two AIS channels and the DSC Channel e Should be mounted with at least two metre vertical separation distance from any other VHF antenna used for speech or DCS communication but see also the section Radio Frequency Exposure Warning below Warnings VHF Antenna Connection Connecting a badly
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