Manual SR162_v1.3E
Contents
1. OPERATION amp INSTALLATION MANUAL SR 162 AA Version 1 3E True Heading 2005 The manual may not in any aspect be copied without the prior authorization from True Heading AB NB WN e DN 10 11 12 REVISO Nai catas 3 INTRODUCTION nie reer arn Cree ne 4 GEOSSAR Y e ae ea ees eee se ae saa waa saa ae a Ae 5 CONDITIONS ea sete cta olaa nto ollo died 6 WARRANT Yei dl ld 7 5 1 Ss SA 7 2 Waranty CONOS arar 7 D gt MALA proce dute triada 7 SE ENC AA A elenidiendsnentsnee 7 SUPPOR Terana a TN ant eer ume RA a SANN ciel 8 INFORMATION ABOUT AIS sutil 9 7 1 GENETTA O cae An resor a nens 9 7 2 Short technical description of AIS oooonnnnnnnccnnncononocnnnnnnnnnonconnonnnnnnnnnnnononinnoss 10 7 3 Limitations yith AS A ais 11 SRG ahaa ac gear e 12 8 1 General descripta 12 0 2 Technical SPS C101 ALON errata ida 12 8 2 1 PETC C UNC AUC a tal dais 12 8 2 2 Baronu aa A a a 12 8 2 3 LGA EE E A AN 12 8 2 4 PY STO GL datana a a aimee locas 12 HOWTO INSTALESR OZ ata oi 13 9 1 latoduc 4 G 1 eee ereenet nt rerer reenter llei elsa 13 A silent cate nine ans a 13 9 2 1 Checking your maten dea 13 O22 Insta line your ECC Cr stas cidcias 13 KS Amenna WAS tall AC OM erste russen b nde ns 13 9 2 4 HE Antenna cacao E 14 9 2 5 POW CP tsar sonden oi Ad 15 9 2 6 Connectionto EX Te TRA GERD sisi 16 9 2 7 Comestonto PE oe 17 9 2 8 Data cables dl 19 OPERATIONAL GUIDELINES FOR SR 162 cocccccnnnnnnnnnnnnccnccnncnnnnnnnonononanons2. 38400 b s default NMEA 0183 ver 3 VDM AIS1 161 975 MHz AIS2 162 025 MHz 112dBm 50 ohm 115 x 75 x 28 mm 400g Antenna BNC VHF 9 pin D sub connector 9 HOW TO INSTALL SR 162 9 1 Introduction SR 162 will be quick and simple to install You will need antenna cables and connectors for a VHF antenna not included and power access of 12 V DC When this is in place your SR 162 can easily be connected to your PC or any other type of display system e g a plotter Please be aware that the software that you use to display AIS data must be compatible with the standard messages that AIS provides onits output data port The data output port sends serial data through a serial cable to the display system so that AIS targets can be displayed 9 2 Installation This part describes the most important information you need to install your SR 162 receiver You should read the entire manual to get a full understanding of how to install and operate your SR 162 If you want your SR 162 to operate with e g monitor software your plotter or a PC based software please act as follows 9 2 1 Checking your material Check that you have received all the equipment with your SR 162 and that the delivered equipment has not been damaged during delivery If the equipment has been damaged please contact your reseller or our support 9 2 2 Installing your receiver SR 162 is made to be installed in a protected environment in door and shall therefore
3. able to handle AIS data Silva and Navnet from Furuno has been told to us to be able to do so Raymarine s Seatalk will most likely not be able to handle AIS Ask your network provider for further information Q I do not have a serial port on my computer how can I then get the data from my SR 162 into the PC A Today serial to USB format converters can be found in most computer shops True Heading can also provide such converters upon request Please ask for a serial to USB converter 12 NOTES
4. sensors positions speed or heading sensors could lead to that wrong information will be transmitted Dangerous situations can occur if fauly information is shown on another ship 8 SR 162 8 1 General description With your SR 162 you will be able to see other ships that has been equipped with AIS and comes within your VHF coverage area Information transmitted is e g name on the ship call sign Heading Speed Course Destination and Type of ship SR 162 complies to the NMEA0183 and IEC 61162 1 standards and can be connected to all kind of ECS or radar system that supports these formats and has the capacity to display AIS targets and data The installation is quick and easy since it only requires power connection a VHF antenna and then a data cable to your display system and proper setup of the same SR 162 is a very good complement to radar since ships carrying AIS will be easy to identify on the radar screen 8 2 Technical specification SR 162 is a compact two channel receiver with a synthesized VHF receiver that operates in the maritime VHF frequency band It has been designed to receive and decode transmissions from other AIS transceivers 8 2 1 Electrical data Power Powerconsumption 8 2 2 Data output Data Speed Format Out data NMEA messages 8 2 3 Receiver Frequency Sensitivity Antenna impedans 8 2 4 Physical data LxWxH Weight Connectors Data output port 9 15 Volt DC 1 5 W
5. to an external GPS sensor to provide position data through the SR 162 AIS Receiver This is very useful since this means that you will save one port on you display system as well as solve a the problem with having different data speeds from the GPS normally 4800 bit s and AIS 38400 bit s something that normally not will be possible into a PC Now the SR162 automatically mixes the GPS and the AIS data and you will have a seamless throughput of data into your display system presenting own position and AIS information The SR 162 will not filter any data from the external GPS hece provide you with full throughput of all transmitted data from the GPS The connection is made in the following way 5432 Picture 5 Numbering of a female DB9 socket connector Picture 5 displays the numbering scheme for an extension cable s DB9 socket connectors female The associated numbering for the plug connector male is a mirror reflection of scheme showed in picture 5 The connection is made with a splitter that takes data from the GPS into the SR 162 AIS Receiver on port 3 and transmits data from the SR 162 AIS receiver to the display system on port 2 as shown in picture 6 and 7 True Heading can provide the serial cable splitter upon request Please consult GPS 5 GND 2GP5 2 DISPLAY AIS RECEIVER DISPLAY Picture 6 The serial NMEA data from the GPS commes into the AIS on port 3 and the AIS receivers transmits AIS and GPS data to
6. 19 A E E 23 1 REVISSION Responsible Approved 2005 05 01 Anders Bergstr m Nils Willart 2005 05 09 Anders Bergstr m Nils Willart 2005 05 10 Anders Bergstr m Nils Willart External GPS 2005 09 26 Anders Begstr m Nils Willart Led displays O AA SU E PE 2 INTRODUCTION We like to thank you for choosing True Heading AB to deliver your SR 162 AIS receiver SR 162 is a high quality AIS receiver using VHF technology SR 162 makes it possible to receive information from ships buoys lighthouses SAR helicopters Coastguard units Pilot boats Weather station etc that are equipped with Automatic Identification System AIS transponders It is today a requirement for all ships above 300 GT to carry AIS according to IMO SOLAS regulation This means that a large quantity of ships and other type of navigational hazards or information providers will be seen by your receiver and contribute to enhanced safety in your navigation 2047 Rowe Wetted Database KEY HSAND 1 1 mu E j S BF MEA i E Wk Ps A x m r Fl m e aer i a q l acii f iliu F lla A riers d oractic v cka on pracike FI I Zi P a y 5 OA 2 1 Te t 4 a a 3 E i sr a f Po Foe r GE i 2 i q e a 8 E ds ae pr li cl cl es 3 pod fh peruano a F STENT NAF i F Fol Actus Tange ae A THER HNE w i an RAT E Heti MELIDE E E n a a cnc F l E RE ters eres Spans p Tor Fr TT Fare t Si eee I i it j a JUNE ET a
7. 8888880 2 57 AIVDM 2 1 4 B 570UV401 03Hd7HIR220 D8Dj04hV22222222221 7B R gt 6Ke0 Dj1Bkm 0 2E AIVDM 2 2 4 B H88888888888880 2 53 AIVDM 1 1 B 403tAeQuBU8 N 9E p lt noc700501 0 6D AIVDM 1 1 A 14RI1 JOPOO89GU0 lt nFo B vp0501 0 64 AIVDM 1 1 A 169 gt 000189Jap lt nvS lt 2b300 BI 0 3F AIVDM 1 1 A D04SGTOm9ONL8 0 78 AIVDM 1 1 B D04SGTOliNL8 0 2A AIVDM 1 1 A 19NWp8h00289HGt lt nil8Q4K608FA 0 27 AIVDM 1 1 A 403tAeQuBU8 9E p lt noc7008Gh 0 3E AIVDM 1 1 A D03tAePePffpeQN9HO0 4 1B AIVDM 1 1 A 404SGT1uBU8 a 9JiH lt ISFW00D1B 0 76 AIVDM 1 1 B 14RI1 JOP0089GU0 lt nG B w lt 0 HB 0 27 AIVDM 1 1 B 14RESPOP0089E h lt nTgoCwwFO uJL 0 5E AIVDM 1 1 B 177CQd800q 9C4p lt n5 elbeJO Jm 0 44 AIVDM 1 1 B D04SGTOI1NL8 0 57 AIVDM 1 1 B 403tAeQuBU8 j 9E p lt noc700501 0 49 AIVDM 1 1 B D03tAePF4ffpF5N9HO0 4 18 AIVDM 1 1 B D03tAePF4ffpF5N9HO0 4 18 9 2 8 Data cables Computers that connects to a SR 162 with a pin to pin 9 pin D sub 9DB male on the receiver side and a the equivalent on the PC side female Each pin should be connected as follows Male Female 1 l 2 2 Data output 3 3 Data input 4 4 5 5 Signal ground 6 6 7 7 8 8 9 9 10 OPERATIONAL GUIDELINES FOR SR 162 SR 162 has two 2 led indicators to help with status monitoring of the AIS receiver Led DATA indicating output of data Led A B indicating reception of data on the serial port on the radio channels Pictu
8. IS Yacht 11 FAQ Q Is it possible to use an existing VHF antenna A Yes you can use an existing VHF antenna by adding the True Heading VHF antenna splitter to the installation Then the same antenna used for VHF DSC can be used also for the SR 162 Q What type of VHF antenna do I need for mySR 162 A The VHF antenna should at least fulfill the following requirements Antenna type Vertical radiator Antenna gain 0 3 dBd Impedance 50 ohm Q Is it possible to connect my SR 162 to a plotter A Today only a few plotters are prepared to connect AIS and to display AIS targets Some of the manufacturer that supports this today is Furuno Seiwa and Interphase Garmin and some others are working on the issue and will be able to do so in coming models For further information contact your supplier and ask about AIS interface to their product Q What electronic chart programs can handle AIS today AIS A Today several software are prepared for AIS the once known to us are Adveto AECDIS series Fugawi Fugro ICAN Aldebaran Nobeltech SeaClear Transas Navisailor All software that can handle the NMEA message VDM and display the data will be able to present AIS Ask your provider for further information In addition stand alone display software is available like e g the AIS YACHT from Y tronic Q Will SR 162 work with my network solution onboard A All networks that can handle NMEA VDM data at the speed 38400 b s will be
9. VHF antennas can normally be provided by marine electronic shops True Heading can also provide a suitable package including a high quality low cost VHF antenna adapted for SR 162 Please ask for our VHF antenna or our package solutions The antenna cable type should be at least RG58C U or better The VHF antenna installation is often a compromise of the following requirements e Separation between different antennas e Free line of sight 360 degrees e Antenna height Antenna separation The AIS receiver uses frequencies in the upper part of the maritime band Normally channel 87B AIS 1 161 975 MHz and channel 88B AIS 2 162 025 MHz AIS frequencies are situated in the duplex band close to coastal stations transmit channels To avoid interference the SR 162 antenna shall be separated as much as possible from the ordinary VHF antenna The best separation will be accomplished if the antennas are placed on different heights or placed on different sides off the mast or boat True Headings VHF splitter can also be used as an effective solution to the antenna placing Line of sight To have the best possible reception for the SR 162 the antenna shall be placed with free line of sight around the full horizon Larger objects can stop the signals from certain directions Antenna height AIS use frequencies in the maritime VHF band The area of coverage in this frequency band is almost the same as line of sight This means that the higher you put y
10. anty belongs to the person that purchased the product and cannot be handed over to a third party or person The warranty is not valid if serial number is missing seals broken or if the SR 162 has been incorrect installed Neither is the warranty valid if instructions for connection have not been followed faults caused by wrong usage own made modifications or service made from none authorized service stations True Heading AB acknowledges that SR 162 at delivery has been controlled and found operational True Heading AB agrees to repair or replace any faulty unit without any cost according to the conditions set forth during a period of two 2 years from day of purchase The warranty includes replacement or repair of faulty unit due to error in components or errors in relation to the production of the product The warranty covers costs for spares labor and return shipment It does not include shipment from to the repair facility True Heading AB will never be liable under the warranty conditions for incorrect use misuse and incidental indirect or consequential damages of the SR 162 Proof of purchase is required for any warranty claim of the SR 162 5 3 Warranty procedures True Heading AB repairs and replaces faulty parts or units The customer is responsible for transport of the defect part or unit to True Heading or its retailer Warranty claims shall be made to the place where SR 162 was purchased or direct to True Headi
11. be placed where it is well protected from humidity and water SR 162 shall not either be placed close to generators or compressors from e g refrigerators since they can interfere with the reception Normally a suitable placement of the SR 162 is together with other types of navigation equipment and the PC or plotter that will be used to display the AIS data also a position close to a location where power is easy available is a good idea SR 162 also contains led indicators for AIS reception on both channels and output on the data port therefore it is a good idea to have these indicators viewable to ensure performance and functionality SR 162 is easy to mount on the bulkhead or panels 9 2 3 Antenna installation Install the VHF antenna at a suitable position onboard see further below The antenna cabling should be installed the shortest possible way and cable type selected depending on cable length to avoid losses All connectors should be properly connected to avoid losses and thoroughly sealed with self amalgamating rubber tape to avoid humidity in the connectors and thereby reduced functionality Quick quide for cable selection Length Cable types lt 10 m cables RG58C U gt 10 m cables RG213 U 9 2 4 VHF antenna SR 162 is not delivered with a VHF antenna as standard since requirements for the antenna and the cables can be different in various types of installations The VHF antenna is necessary for the AIS receiver to work properly
12. from True Heading AB it is important that you read and fully understand the installation manual and its instructions You should only proceed with the installation if you are confident that you will be able to do so True Heading AB cannot be held liable for any injury or damage caused by during or because of the installation of SR 162 The SR 162 is used at your own risk and it shall be remembered that AIS data depends on the full co operation of other users and systems SR 162 is a navigation aid and works in co operation with other similar systems like e g radar optical lookout etc The SR 162 installation should be inspected from time to time and checked on its operational quality frequently by the user Remember that navigation and life at sea always requires proper seamanship and that the SR 162 is not a replacement for such qualities NOT ALL VESSELS CARRY AIS IT IS THEREFORE IMPORTANT TO KEEP PROPER LOOKOUT AT ALL TIMES AND TO USE ALL AVAILABLE MEANS TO AVOID COLLISIONS AND ACCIDENTS 5 WARRANTY 5 1 General SR 162 is developed and manufactured to meet high technical requirements and user demands If installed correctly and with regular maintenance your SR 162 should provide you with several years of operation and a very useful product For further information provided in the manual and in this information sheet please consult the place where you purchased the SR 162 or direct to our support 5 2 Warranty conditions The warr
13. he information is transmitted in short data packages or slots in predefined and synchronized time frames The dynamic information position speed heading etc is transmitted in intervals from 2 s up to 10 s depending on the speed and maneuvers of the transmitting ship were the AIS is mounted Static and voyage related information type of ship size cargo destination etc 1s transmitted every sixth minute or upon request from other units Position course and speed normally are collected from the same sensor systems that provides the same information used in the navigation e g in radars or ECDIS and this is normally based on GPS or DGPS All ships within VHF coverage will be able to receive AIS data and competent authorities that have installed networks with coastal AIS coverage can receive the information The capacity for the ships to report is defined by the IMO performance standard to a minimum of 2000 data packages or slots per minute see picture 2 ITU Technical Standard for the Universal AIS has been kind to double this and has provided AIS with 4500 data packages or slots per minute The transmission is based on the SO TDMA Self organized Time Division Multiple Access technique that allows the system to overload with 400 till 500 and still give almost a 100 message throughput between ships that are closer to each other than 8 to 20 nautical miles In such case the system overloads targets far away will be discriminated in favor of
14. nformation like Wind Speed Wind Direction Water Level Temperature Currents and Tide etc ADYETO AECDIS2000 1200 Y1 42 Licens 20087 Adveto DEMO Rutt Namnl s Datab Rutt Databas Inspelning Sp r ECDIS Visa WGS584 Konfigurera Tidvatten Om Im Mm Be 0 20nm H 2mn H 3147631N 09012323E Ka Fi fDagk REVENGEGRUNDET SANDHAMN CH 83 f 11 7 m s Picture 10 Meteorological data transmitted with AIS in real time AIS transponders will transmit the following data that can be received from your SR 162 Static Information Dynamic Information Voyage related Information Name Position Destination Type of ship Speed Over Ground Depth Call sign Course Over Ground ETA MMSI number Rate Of Turn Navigational Status PMO number Heading Size Note Sometimes ships have not properly programmed their AIS transponders and parts of above mentioned information can then be missing SR 162 can without charge be provided with the electronic chart system SeaClear SeaClear is presented separately with its own user manual Below some examp les of how AIS can be presented in various types of electronic chart systems or plotters At present several manufacturers can provide systems that can display AIS A list of the once known to us can be found in the chapter FAQ Picture 11 Example how AIS is presented in the software AECDIS from ADVETO t Picture 14 Example how AIS is presented in A
15. ng AB through mail fax or e mail to our support department 5 4 Other issues Proper seamanship and common sense is applicable when using SR 162 and the products shall only be seen as a navaid True Heading AB keeps the right to change the specification of the product without prior notice IF YOU ARE NOT ABLE TO ACCEPT THE TERMS ABOVE PLEASE RETURN THE SR 162 TO YOUR RETAILER FOR FULL CREDIT BEFORE OPENED AND USED 6 SUPPORT If you need support please contact the closest reseller or the location where you acquired the product The manufacturer can also give support direct Email support trueheading se or Fax 46 8 6618020 Please register your purchase of SR 162 with True Heading AB by sending an e mail to register trueheading se stating the serial number date of purchase your name address and your dealer s name 7 INFORMATION ABOUT AIS 7 1 General AIS Automatic Identification System is the name of a system that makes it possible for ships to identify other ships and to monitor ship movements The reason for implementing the AIS system is for the mariner to obtain more information about ships in the vicinity than what radar is able to provide AIS gives e g information about a ships identity name call sign IMO number and MMSI size this even for ships behind Island or bends that radar cannot detect AIS is used to enhance safety for life at sea improve safety and efficiency in navigation and protect the ma
16. our antenna the longer range you will obtain The VHF antenna shall be of a standard marine type for full functionality off the SR 162 Antenna type Vertical radiator Antenna gain 0 3 dBd Impedance 50 ohm The VHF antenna to the SR 162 shall be placed as high as possible and with proper separation to other transmitting antenna equipment onboard A suitable solution is to use the VHF antenna splitter from True Heading that allows you to use existing VHF antenna installations if existing The VHF splitter solution will save both time and installation cost further an existing VHF antenna is normally placed already on the most favorable location onboard The VHF antenna connection shall be connected to the right connector BNC on the SR 162 as shown below VHE antenna connection BNC ee PAT GA To ES DREA Picture 3 VHF antenna connection 9 2 5 Power Connect the SR 162 to 12 V DC via a 0 5A fuse The SR 162 comes with a power cable already fitted with a fuse and with a 2 pole DC connector that locks automatically when fitted Red cable is positive Black cable is negative When SR 162 is connected to 12 VDC the led indicators will flash whenone ofthe frequencies is receiving data or data is being sent to the display port Connection for power 12V DC om dr Connection for data 9 pole Dsub i AT om Picture 4 Power and data cable connection 9 2 6 Connection to external GPS The SR 162 can be connected
17. r d a r n Ete ot Y o 4 70 SEMEL a nta a iFoe pai bei j a r E JOEN j E I a A Sram NRA F INHD Ru akin Be a I pa E d le r ae BANDE RAA i E Fi mia A 3 oY ey i e F re a LS E SALADINO E F T nn z eis Am MEE art 3 A pee AZ o ABSA TT BURA a s A i bi 7 An 7 T al A A 13 H lle Tr 7 J 3 E z 4 CAL A J UL ins Staal CoB ad FR e u eee gr cae a HO En ll M do a LL i faim a Y wary ar A Ee ee o a PRHE i 7 Pasti ach ran Practice went T H Start 2 ad Trt Head echo El Bu Picture 1 Real traffic scenario between Sweden and Bornholm Denmark It is of utmost importance that you read this manual before you start to install and use your SR 162 3 GLOSSARY To make the reading of the manual easier we like to start up with introducing the used abbreviations and glossary AIS ATC DGPS ETA GPS GALILEO GNSS IMO NM RX SMA SOLAS SOTDMA STD MA VHF VTS Automatic Identification System Air Traffic Control Differential Global Positioning System Estimated Time of Arrival Global Positioning System European equivalent to GPS Global Navigation Satellite System International Maritime Organization Nautical Mile 1852 m Receive Receiver Swedish Maritime Administration Safety Of Life At Sea Self Organized Time Division Multiple Access Very High Frequency Vessel Traffic Services Like ATC but for ships 4 CONDITIONS Before you start using the SR 162 product
18. re 8 Led indicators The light A B indicates in RED when the SR 162 is receiving data on channel A and GREEN when receiving data on channel B A stands for the frequency AIS 1 Normally channel 87B and B for the frequency AIS 2 Normally channel 88B The light DATA indicates in GREEN that the SR 162 is transfering data to you application on the data port If the A B light turns into a fixed or almost fixed light it means that the frequency is suffering from interference or is blocked jammed or disturbed and you need to investigate the cause of the problem SR 162 will give several possibilities to enhance the navigational safety as a complement to e g radars and electronic charting systems With an AIS receiver you will improve safety during navigation in e g low visibility or at night At sea AIS provides a support to the radar especially during rain snow and sea clutter conditions With AIS it is also possible to se behind islands and bends something that will give an idea what s behind the corner Picture 9 With AIS you can see behind island and bend Several Maritime authorities will also transmit safety related information using land based AIS networks These are messages that will contain information about e g sudden threats in fairways navigational warnings meteorological data etc Meteorological information will also be transmitted in realtime from certain strategic positions along coastlines That data will contain i
19. rine environment AIS information transmitted from a ship contains of three 3 different main types Static data that was programmed into the AIS equipment at installation and it only needs to be changed if the ship changes its name flag or undergoes a major refit where size or ship type is changed Dynamic data contains information that automatically is updated from ship sensors like the heading from the Gyro Position and speed from GNSS equipment Also navigational status belongs to the group of dynamic data but is updated manually by the crew and Voyage related data that manually is updated by the crew along the voyage From the start AIS some times also was refereed to as UAIS or as the 4S transponder system that meant Ship to Ship and Ship to Shore IMO adopted 1998 a performance standard for AIS within the SOLAS requirement that described in general how AIS should work Below follows a brief description of the main requirements for AIS from the performance standard e Automatically provide information to AIS land stations other ships and airborne units e g SAR helicopters about the ships identity Type of ship Position Course Speed Navigational status e g under way using engine at anchor and other safety related information of importance e Be able to receive the same type of information from other ships e Be able to monitor and track other ships e Exchange information with land based AIS systems AIS is an au
20. targets close to your own ship In reality the system capacity is unlimited and allows for a large number of ships to communicate simultaneously The principle of AIS STDMA ITDMA Each thay slot presents 26 6 mili Tre AR of ship A p sends the position The same Meare none time a pr cedupe ls slot At the carne b repeated by all time H reserves a ather Al another tine sot Wj E equipped ships the neit position 55 A Re Picture 2 The principle of AIS technology on the two radio channels 7 3 Limitations with AIS You should always be aware that all ship others ships and in particular pleasurecrafts fishing boats warships and some coastal stations and VIS centers not will be equipped with AIS Ships that have been mandated to carry AIS can also under certain conditions turn of there AIS equipment at the master s disgrace Therefore it is important to be aware that the information that AIS provides might not be the full and complete picture of the situation around your ship Users of AIS must also be aware that transmission of false data can occur and that this will be hazardous not only to your own ship but to other as well The user is responsible for all data that is entered into the system and for information provided by external sensors The accuracy of received AIS data is only as good as the information transmitted from the source of information You should always be aware that wrong configured or calibrated ship
21. the application on port 2 Picture 7 The serial cable splitter to provide both GPS and AIS data on one port 9 2 7 Connection to PC Use the included serial cable for RS232 format Connect the cable to the connector on the SR 162 and then to the PC network or plotter port If your PC does not have a serial port a Serial to USB converter can be used If another serial cable is used than the included it shall be a pin to pin connection as 2 2 3 3 5 5 Start your navigation system or plotter and set the baud rate to 38400 bit s on the serial port where you connect your SR 162 Note If you do not have any AIS software you can use the Hyperlink program supplied with Windows This can be found by pressing the Start button gt programs gt Accessories gt Communications gt HyperTerminal Set the com port for Baud rate 38400 Data bit S Parity None Stop bits l When you your port is set to receive data as described above you shall be able to see NMEA data for AIS called VDM according to the example below that follows normal NMEA structure IAIVDM 1 1 B 169 gt 000089Jap lt nvS lt 2r2d0H lt q 0 13 IAIVDM 1 1 A 15Ci3V0020 lt N d lt dCl C8 gt f08 M 0 4B AIVDM 1 1 B 177CQd800q 9C8D lt n4A L bf0D00 0 0E AIVDM 1 1 A D04SGT1 AANL8 0 2D AIVDM 1 1 B D04SGT1 qNL8 0 1F AIVDM 1 1 B 19NWp8h00289HGt lt nii L4JI0 lt 0k 0 67 AIVDM 2 1 3 A 570UV40103Hd7HIR220 D8Dj04hV22222222221 B R gt 6Ke0 Dj1Bkm 0 2A AIVDM 2 2 3 A H8888888
22. tomatic system that continuously and simultaneously transmits on two channels in the maritime VHF frequency band AIS can handle several reports in a rapid consecutive flow To accomplish these AIS uses a technique called Self Organized Time Division Multiple Access SOTDMA that guarantees high transmission safety and operational robustness AIS also allows for other types of information from e g sensors like Gyro GPS and echo sounders etc to be transmitted automatically Important areas where AIS is used are e Information exchange between ships within VHF range normally 20 30 NM to enhance safety at sea and to improve situation awareness e Information exchange between ships and AIS land stations as e g a VTS that controls and monitors maritime traffic in an area e Automatic reporting in areas with mandatory reporting of different kinds e Exchange of safety related information between ships and between ships and land stations e Services like e g meteorological information in real time from areas of importance identity and position of floating and fixed aids to navigation to improve identification and navigation 7 2 Short technical description of AIS AIS operates primarily on two dedicated VHF frequencies AISI 161 975 MHz and AIS2 162 025 MHz In areas where these two channels are not available AIS can automatically change to other alternatively available frequencies AIS uses two VHF radio channels where t
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