AIS950 Class A Transceiver Installation instructions Document number: 87149-2 Date: 02-2012
Thank you for purchasing this AIS Class A transceiver. This product has been engineered to offer you the highest level of performance and durability and we hope that it will provide many years of reliable service. We constantly strive to achieve the highest possible quality standards, should you encounter any problems with this product, please contact your dealer who will be pleased to offer any assistance you require.
Contents 1 Notices..............................................................................................7 1.1 Safety warnings ............................................................................................................................ 7 1.2 General notices............................................................................................................................. 7 2 Introduction...................................................................................
5.7 TDMA transmitter ....................................................................................................................... 52 5.8 TDMA receivers .......................................................................................................................... 52 5.9 DSC receiver............................................................................................................................... 53 5.10 RF connections ..................................................
List of figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 Figure 19 Figure 20 Figure 21 Figure 22 Figure 23 Figure 24 Figure 25 Figure 26 Figure 27 Figure 28 Figure 29 Figure 30 Figure 31 Figure 32 Figure 33 Figure 34 Figure 35 Figure 36 Figure 37 Figure 38 Figure 39 Figure 40 Figure 41 Figure 42 Figure 43 Figure 44 Figure 45 Figure 46 Figure 47 Figure 48 Figure 49 Figure 50 Figur
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Notices 1 Notices When reading this manual please pay particular attention to warnings marked with the warning triangle symbol shown on the left. These are important messages for safety, installation and usage of the transceiver. 1.1 Safety warnings This equipment must be installed in accordance with the instructions provided in this manual. Failure to do so will seriously affect its performance and reliability. It is strongly recommended that a trained technician installs and configures this product.
Notices 1.2.4 Disposal of the transceiver and packaging Please dispose of this AIS transceiver in accordance with the European WEEE Directive or with the applicable local regulations for disposal of electrical equipment. Every effort has been made to ensure the packaging for the transceiver is recyclable. Please dispose of the packaging in an environmentally friendly manner. 1.2.5 Accuracy of this manual This manual is intended as a guide to the installation, setup and use of this product.
Introduction 2 Introduction 2.1 About AIS The marine Automatic Identification System (AIS) is a location and vessel information reporting system. It allows vessels equipped with AIS to automatically and dynamically share and regularly update their position, speed, course and other information such as vessel identity with similarly equipped vessels. Position is derived from the Global Positioning System (GPS) and communication between vessels is by Very High Frequency (VHF) digital transmissions.
Introduction 2.2 Static and dynamic vessel data Information transmitted by an AIS transceiver is in two categories: static and dynamic data. The vessel's dynamic data which includes location, speed over ground (SOG) and course over ground (COG) is calculated automatically using the internal GPS receiver. Static data is information about the vessel which must be programmed into the AIS transceiver.
Operation 3 Operation This section assumes that the AIS950 transceiver has been installed in accordance with the instructions provided in the Installation section of this manual. Please read the warning notices at the front of this manual before operating the AIS transceiver. 3.
Operation 3.2 Turning the transceiver on The AIS950 transceiver does not have a power switch and is designed to be permanently powered. When power is first applied the display will show the text ‘Automatic Identification System’ for 5 seconds before the main operating screen is shown. 3.3 Display layout The display layout is shown in Figure 3. All operating screens show the time, status bar, scroll indicators and relevant function keys. The time displayed is UTC time.
Operation Icon 1W Table 1 Description Shown when unread AIS safety related text messages are available. Shown flashing when an alarm is active, shown constantly when an alarm is active, but acknowledged. Shown when the transmitter is set to 1W mode. Status Icons 3.4 Main operating screens In normal operation the display shows one of six main operating screens. The next screen can be selected at any time by pressing the ‘Screen’ function key as shown in Figure 4.
Operation 3.5 Target list The target list screen is shown by default after power up. This screen shows the name (or MMSI), range (in nautical miles) and bearing (in degrees) of other AIS equipped vessels. The nearest vessel is shown at the top of the list. Only the 200 nearest vessels are shown in the target list, more distant vessels may be viewed if an AIS enabled external display, RADAR or ECDIS is connected to the transceiver.
Operation The information displayed on this screen includes: ● MMSI - the Maritime Mobile Service Identity for the vessel on which the transceiver is installed.
Operation 3.8 Received messages This screen shows AIS text and Safety Related Messages (SRM) received from other AIS stations. The most recently received message is shown at the top of the list. The date and time of reception, name or MMSI of the sending station and type of message (text or SRM) are shown in the message list. To view the message content select the required message using the scroll wheel, then either press the scroll wheel or the “View” function key.
Operation 3.9 Alarms screen This screen shows the status of AIS system alarms. If an active and not yet acknowledged alarm condition exists the alarm icon in the status bar will flash. If an alarm condition occurs whilst not in the menu system an acknowledgement screen will be shown immediately, this is described in section 3.12. If an alarm condition occurs whilst editing a field in the menu system the alarm bell symbol flashes in the status bar.
Operation 3.10 Target plot screen The target plot screen shows the location of other AIS equipped vessels and shore stations relative to your own vessel. The target plot screen provides a basic overview of AIS targets and should not be regarded as a substitute for display of AIS information on a dedicated electronic chart display system (ECDIS).
Operation 13:20:47 INT GPS OK SAFET Y RELATED MESSAGE: Type: Broadcast SRM MMSI: 235687901 NAME: >>MARY ROSE Channel: A Date: 29/01/2010 Back Reply Figure 14 Safety Related Message notification 3.11.2 Sending AIS Text and Safety Related Messages To compose a new text or Safety Related Message (SRM) press the ‘Menu’ key then select the ‘MESSAGES’ sub menu followed by the ‘NEW MESSAGE’ option. The new message screen is shown in Figure 15. To send a message complete the following steps: 1.
Operation 3.12 Handling alarms The AIS950 transceiver performs self checking functions continuously. If a self check fails an alarm will occur. Possible alarm conditions are listed in Table 2. Alarm condition Description Transmitter malfunction This alarm can occur if there is a fault with the transmitter or if the antenna VSWR exceeds allowable limits. The alarm will be cleared if the transmitter recovers normal operation or the VSWR measurement returns to an allowable value.
Operation From the alarm notification screen you have the option to immediately acknowledge the alarm by pressing the ‘ACK’ function key, or to view the active alarms list by pressing the ‘Goto List’ function key. Once an alarm is acknowledged it will remain in the alarms list whilst the underlying alarm condition is active. The presence of active but acknowledged alarm conditions is indicated by continuous display of the alarm icon in the status bar. 3.
Operation 10:05:20 INT GPS OK Own static and voyage data: MMSI: 123456789 NAME: POSEIDON DESTINATION: SOUTH ETA: 06/06/10 1400Hrs Edit 10:05:23 INT GPS Own static and voyage data: MMSI: 123456789 NAME: POSEIDON DESTINATION: SOU T H ETA: 06/06/10 1400Hrs 10:05:25 3 4 5 6 Save INT GPS OK Own static and voyage Q data: MMSI: 123456789 R NAME: POSEIDON S DESTINATION: S O U T H U ETA: 06/06/10 1400Hrs V W Cancel 2 Screen OK Cancel 1 Save Figure 17 Text entry 3.
Operation 13:20:47 INT GPS OK Long range interrogation: Date: 31/03/2010 Time: 13:15:39 MMSI: 001245368 Name: >> RES Response automatically sent Ack nowledge Figure 18 Long range interrogation notification; automatic response mode enabled 13:20:47 INT GPS OK Long range interrogation: Date: 31/03/2010 Time: 13:15:39 MMSI: 001245368 Name: >> RES Set default responses Decline Respond Figure 19 Long range interrogation notification; manual response mode enabled A list of received Long range interrogat
Operation 3.15 Passwords and security Certain important information stored within the transceiver can not be changed without knowledge of the password. The protected information includes: ● MMSI number ● Name of vessel ● Call sign ● IMO number ● Channel management settings ● Vessel dimensions and GNSS antenna locations ● Type of ship ● Data interface configuration When trying to edit any of the above information you will be prompted to enter the password. The default password is 00000000.
Operation VOYAGE DATA NAVIGATIONAL STATUS DESTINATION ETA DRAUGHT CARGO/SHIP TYPE NUMBER ON BOARD MESSAGES NEW MESSAGE MESSAGES INBOX SENT MESSAGES LONG RANGE MESSAGES USER SETTINGS KEY BEEP DISPLAY LONG RANGE CONFIGURATION SET LANGUAGE INSTALLATION SET IDENTIFICATION DIMENSIONS CHANGE PASSWORD REGIONAL AREAS SENSOR CONFIGURATION MAINTENANCE SYSTEM INFORMATION DIAGNOSTICS SENSOR STATUS Figure 22 Main menu structure Page 25
Operation 13:20:47 INT GPS OK MAIN MENU: VOYAGE DATA MESSAGES USER SET TINGS INSTALLATION MAINTENANCE Back Selec t Figure 23 Main menu screen 3.16.1 Voyage data menu The voyage data menu provides quick access to the most commonly changed AIS transceiver parameters.
Operation 3.16.2 Messages menu The messages menu provides access to AIS text and safety related message functions along with long range messaging functions. 13:20:47 INT GPS OK MESSAGES: NEW MESSAGE MESSAGE INBOX SENT MESSAGES LONG RANGE MESSAGES Back Selec t Figure 25 The messages menu The available options are: ● New message - takes you to the message composition screen as described in section 3.8. ● Message Inbox - takes you to the received message list view as described in section 3.8.
Operation 3.16.4 Installation menu The installation menu provides access to settings that are required during installation of the AIS950 transceiver. Please refer to the installation section of this manual for more detailed information on installation settings and requirements. Some settings in the installation menu are password protected and should only be adjusted by authorised personnel.
Operation 3.16.6 Diagnostics Certain diagnostics information is provided to assist with installation and maintenance of the transceiver. This can be accessed via the Maintenance menu. Figure 29 shows the diagnostics menu page. A number of features can be accessed via the diagnostics menu: ● Internal GPS status provides GPS lock status, number of satellites in view and in use and the mode of use. ● ADC and VSWR data provides internal system information for use in installation and maintenance only.
Operation 13:20:47 INT GPS OK TANKER MODE: Exiting Tanker Mode Transmit Power is High Power (12.5W ) Change Nav. Status? ( Currently moored ) Back Change Figure 31 Tanker mode exit screen when speed exceeds 3 knots 3.18 Units display - speed and distance When operating in Class A (SOLAS) mode the default units for speed and distance are knots (kn) and nautical miles (nm) respectively. It is possible to override the default units through the ‘User settings’ menu.
Installation 4 Installation The AIS950 AIS transceiver has been designed for ease of installation. The transceiver is a ‘one box’ design containing both the transceiver and display. An external junction box is provided to simplify connection of sensor and display data wiring. A typical system and connection diagram is provided in Figure 32.
Installation 4.1 What’s in the box? Figure 33 shows the items included with your AIS transceiver purchase. The following section gives a brief overview of each item. Please ensure all items are present and if any of the items are missing please contact your dealer.
Installation 4.2 Preparing for installation In addition to the items provided with the AIS950 transceiver the following items will be required to complete the installation: 4.2.1 VHF Antenna Connection of a suitable VHF antenna will be required for the AIS transceiver to operate. A standard marine band VHF antenna such as that used with VHF voice radios is sufficient. The antenna cable should be terminated with a PL-259 (or UHF) connector.
Installation ● An AC power port should be available near to the pilot plug. A pilot plug is located on the front panel of the AIS transceiver and can also be relocated using the junction box. Please refer to section 4.4.2 for guidance.
Installation Figure 36 Panel mounting the AIS transceiver 4.3.2 Step 2 - Installing the junction box The AIS transceiver receives data from the ship’s sensors via the 50 way data cable which connects to the rear of the transceiver. The other end of this cable is connected to the junction box which provides a convenient screw terminal system for connection of ships sensor data cables.
Installation 52 mm 58 mm 165 mm 178 mm 76 mm Figure 37 Junction box dimensions Figure 38 Mounting the junction box 4.3.3 Installing the GPS antenna The AIS950 AIS transceiver includes an internal GPS receiver for time synchronisation. An independent GPS antenna is required for this receiver in addition to any GPS equipment already installed on board. For mounting of the GPS antenna supplied with your AIS transceiver you will require a one inch 14 TPI pole mount.
Installation ● If possible mount the antenna at least 5m (16ft) from any RADAR or Satellite communications antennas, and ensure the GPS antenna is not in the beam path from any RADAR antenna. ● Route the GPS antenna cable through the pole mount and then to the AIS transceiver. If extension cables are required all junctions should be made using appropriate co-axial connectors and made watertight. ● Connect the GPS antenna cable to the GPS connector on the AIS transceiver as shown in Figure 40.
Installation Please note the following guidelines when selecting and locating the AIS VHF antenna: ● The VHF antenna should be located as high as possible and positioned as far from other antennas as possible. ● The VHF antenna should have omnidirectional vertical polarization. ● Where possible the VHF antenna should be installed at least 3m (10ft) away from other transmitting radio, satellite and RADAR antennas.
Installation VHF antenna connection Figure 42 VHF antenna connection 4.4 Connecting the equipment With the transceiver, junction box and antenna installed it is now possible to connect the equipment in preparation for commissioning. 4.4.1 Antenna connections If antenna connections have not already been made the GPS and VHF antennas should now be connected to the transceiver. Refer to Figure 40 and Figure 42 for guidance. 4.4.2 Data connections The AIS950 transceiver is supplied with a 1m (3.
Installation 4.4.3 Sensor configuration The AIS950 transceiver has seven NMEA0183 (IEC61162-1/2) data ports for connection of ship’s sensors and display equipment as described in Table 3. There are three input ports for ship’s sensor data and three bidirectional ports for connection of display equipment such as Radar or electronic chart displays. It is recommended that an AIS compatible electronic charting system is connected to the AIS950 transceiver for display of AIS targets.
Installation To transceiver Bidirectional data ports EXT_DISP_IN A B GND A B GND EXT_DISP_OUT Termination jumpers A PILOT_IN B GND A B GND PILOT_OUT A DGPS_IN B GND A A B GND DGPS_OUT LR_IN B GND A A SEN1 B GND B GND COM NC NO LR_OUT ALARM A SEN2 B GND GND GND GND SHIELD A Sensor data inputs SEN3 B GND SM BS COM SWITCHES Cable glands Figure 44 Junction box connections Page 41
Installation Data port Junction box signal label Description Function Sensor 1 SEN1 A Sensor port 1 input A SEN1 B Sensor port 1 input B SEN1 GND Sensor port 1 isolated ground Connect to data source, typically ships primary GPS at 4800baud. This port can be configured to operate at either 4800 or 38400 baud*.
Installation An example of connection to external display equipment is provided in Figure 45, and connections to other equipment and sensors follow the same scheme. To determine the ‘A’ and ‘B’ signal lines on external equipment use a digital volt meter to measure the signal line voltage referenced to ground. If the voltmeter shows a negative voltage the ‘A’ signal line is being measured, a positive voltage indicates the ‘B’ signal line.
Installation Along with data port connections the junction box also provides connections to the AIS transceiver alarm relay contacts. The common and normally open alarm contacts are duplicates of the alarm relay connections available at the power connector (see Table 5) whilst the normally closed contact is only provided at the junction box. The alarm relay connections are described in Table 5. Use the alarm connections appropriate to the vessels alarm system.
Installation The alarm relay is rated to 220VDC or 2ADC or 60W maximum. The alarm connections provided at the power connections are a duplicate of the those available via the junction box and described in section 4.4. A chassis ground stud is provided on the rear panel of the transceiver. Note that the transceiver chassis is isolated from the incoming power supply so this stud must not be connected to power supply ground. 4.4.
Installation 4.5 Configuring the AIS950 Transceiver Once all connections have been made the transceiver can be powered and configured for operation. During configuration information about the vessel on which the transceiver is installed is entered into the transceiver. It is important this information is entered accurately as it will be broadcast to other AIS equipped vessels and shore stations.
Installation To enter the GNSS antenna locations go back to the main menu and select the ‘Dimensions’ then ‘Internal’ or 'External’ option as appropriate. Dimensions for both the internal and external GNSS antennas must be entered if an external GNSS is connected to the AIS transceiver. The antenna dimensions should be entered in metres according to the diagram provided in Figure 49.
Installation Type code Vessel type Reserved (do not use) 1[n] Wing in ground craft 2[n] Fishing 30 Towing 31 Towing and length of tow exceeds 200m or breadth exceeds 25m 32 Engaged in dredging or underwater operations 33 Engaged in diving operations 34 Engaged in military operations 35 Sailing 36 Pleasure craft 37 (HSC) High speed craft 4[n] Pilot vessel 50 Search and rescue vessel 51 Tug 52 Port tender 53 Vessel with anti-pollution facilities 54 Law enforcement vessel 55
Installation 4.6 Changing the password Following configuration of the transceiver the password should be changed from its default value of ‘00000000’ to another eight digit code. Password change is carried out by selecting the main menu ‘Installation’ menu, then high-octane password’ submenu. A prompt for the existing password will be shown, followed by entry of the new password then confirmation of the new password before the new password is stored and active.
Installation To create the new area setting press the ‘New' function key and the edit screen shown in Figure 51 will be displayed. 13:20:47 INT GPS OK EDIT REGIONAL AREA: In Use: No Time of In Use: --:--:-Info Source: Not Available Channel A: 2087 Channel B: 2088 Channel A BW: Default Back Figure 51 Regional area editing screen 1. The scroll wheel can now be used to scroll to the field to edit. 2. Select the field by pushing the scroll wheel or pressing the 'Edit’ function key. 3.
Technical Specifications 5 Technical Specifications 5.
Technical Specifications 5.5 Display and user interface Display 248 x 128 pixel monochrome LCD with adjustable backlight Keypad Two function keys and two menu keys with adjustable backlight Rotary control Encoder with push function and adjustable backlight Sounder 2.4kHz buzzer 5.6 Internal GPS Receiver channels 16 channels Time to first fix Typically 36 seconds Frequency L1 band, 1575.42MHz Accuracy 2.5m CEP / 5.0m SEP without differential correction 2.0m CEP / 3.
Technical Specifications 5.9 DSC receiver Number of receivers 1 Frequency 156.525MHz (Channel 70) Channel bandwidth 25kHz Sensitivity -107dBm @ BER <10-2 Modulation mode 25kHz AFSK Adjacent channel selectivity 70dB Spurious response rejection 70dB 5.10 RF connections VHF antenna connection SO-239 / UHF VHF port impedance 50 Ohms GPS antenna connection TNC female GPS port impedance 50 Ohms 5.
Technical Specifications 5.
Technical reference 6 Technical reference 6.1 Interface sentences The IEC61162 sentences accepted by and output by the transceiver serial data ports are listed in Table 10 below.
Technical reference 6.2 Transmission intervals The IEC61162 sentences are in general output in response to a specific event, such as initiation of a binary message via the user interface. Certain messages are output over the ports at regular transmission intervals. Table 11lists each sentence type and the transmission interval. Output sentence type Transmission interval Comments VDO once a second Own vessel VDL reports.
Technical reference 6.4 Bi-directional data ports The input circuitry of the bi-directional data ports is identical to the input circuitry for the sensor data input ports described in the preceding section. The output circuitry consists of a differential line driver IC (Texas Instruments AM26LV31E) and is shown in Figure 54.
Technical reference 6.8.1 ABM - Addressed binary and safety related message This sentence allows external applications to transmit binary and safety messages using the AIS transceiver via AIS messages 6 and 12. !--ABM,x,x,x,xxxxxxxxx,x,x.x,s--s,x*hh Field number Description 1 x= Total number of sentences needed to transfer the message 2 x= Sentence number 3 x= Sequential Message identifier 4 xxxxxxxxx = The MMSI of destination AIS transceiver for the ITU-R M.
Technical reference 6.8.3 ACK - Acknowledge alarm This sentence is used to acknowledge an alarm condition reported by the transceiver. $--ACK,xxx,*hh Field number 1 6.8.4 Description xxx = Identification number of the alarm source to be acknowledged. AIR - AIS Interrogation request This sentence supports ITU-R M.1371 message 15. It provides external applications with the means to initiate requests for specific ITU-R M.1371 messages from remote AIS stations. $--AIR,xxxxxxxxx,x.x,x,x.
Technical reference 6.8.6 DTM - Datum reference Logical geodetic datum and datum offsets from a reference datum. $--DTM,ccc,a,x.x,a,x.x,a, x.x,ccc*hh Field number Description 1 ccc = Local datum 2 a= Local datum subdivision code - NOT USED 3 x.x, a = Lat offset, min, N/S - NOT USED 5 x.x,a = Longitude offset, min, E/W - NOT USED 7 x.
Technical reference $--GBS, hhmmss.ss, x.x, x.x, x.x, xx, x.x, x.x, x.x *hh 6 x.x Probability of missed detection for most likely failed satellite - NOT USED 7 x.x Estimate of bias on most likely failed satellite - NOT USED 8 x.x Standard deviation of bias estimate - NOT USED 6.8.8 GGA - Global positioning system (GPS) fix data This sentence provides time, position and fix related data from a GPS receiver. $--GGA, hhmmss.ss, llll.ll, a, yyyyy.yy, a, x, xx, x.x, x.x, M, x.x, M, x.
Technical reference $--GLL, llll.ll, a, yyyyy.yy, a, hhmmss.ss, A, a *hh 3 hhmmss.ss Time of position (UTC) 4 A Status: A = data valid V = data invalid 5 a Mode indicator: A = Autonomous D = Differential E = Estimated (dead reckoning) M = Manual input S = Simulator N = Data not valid 6.8.10 GNS - GNSS fix data This sentence provides fix data for a single or combined satellite navigation system.
Technical reference 6.8.12 LRF - Long range function This sentence is used in long range interrogation requests and interrogation replies.
Technical reference 6.8.14 RMC - Recommended minimum specific GNSS data Time, date, position, course and speed information provided by a GNSS receiver. All data fields should be provided and null fields only used when data is temporarily unavailable. $--RMC, hhmmss.ss, A, llll.ll,a, yyyyy.yy, a, x.x, x.x, xxxxxx, x.x,a, a*hh Field number Description 1 hhmmss.ss Time of position fix (UTC) 2 A Status: A = data valid V = navigation receiver warning 3 llll.ll, a Latitude, N/S 4 yyyyy.
Technical reference $--SSD,c--c,c--c,xxx,xxx,xx,xx,c,aa*hh 4 xxx Pos. ref., "B," distance from stern, 0 to 511 metres 5 xx Pos. ref., "C," distance from port beam, 0 to 63 metres 6 xx Pos. ref., "D," distance from starboard beam, 0 to 63 metres 7 c DTE indicator flag 8 aa Source identifier 6.8.17 VBW - Dual ground / water speed This sentence conveys both water and ground referenced speed data. $--VBW, x.x, x.x, A, x.x, x.x, A, x.x, A, x.
Technical reference $--VSD,x.x,x.x,x.x,c--c,hhmmss.ss,xx,xx,x.x,x.x*hh 7 xx Estimated month of arrival at destination, 00 to 12 (UTC) 8 x.x Navigational status, 0 to 15 9 x.x Regional application flags, 0 to 15 6.8.19 VTG - Course over ground and ground speed The vessels actual course and speed relative to ground. $--VTG, x.x, T, x.x, M, x.x, N, x.x, K,a*hh Field number Description 1 x.x, T Course over ground, degrees true 2 x.
Technical reference 6.9.2 ACA - AIS Channel assignment message See section 6.8.2. 6.9.3 ALR - Set alarm state This sentence is used to indicate local alarm conditions and status along with alarm acknowledgement status. $--ALR,hhmmss.ss,xxx,A, A,c--c*hh Field number Description 1 hhmmss.
Technical reference $--LR2,x,xxxxxxxxx,xxxxxxxx,hhmmss.ss,llll.ll,a,yyyyy.yy,a,x.x,T,x.x,N*hh 4 hhmmss.ss Time of position, UTC 5 llll.ll,a Latitude, N/S 6 yyyyy.yy,a Longitude, E/W 7 x.x,T Course over ground, degrees True 8 x.x,N Speed over ground, knots 6.9.7 LR3 - Long range reply for function requests ‘I’, ‘O’, ‘P’, ‘U’, and ‘W’ The LR3 sentence contains the information requested by the I, O, P, U and W function characters. $--LR3,x,xxxxxxxxx,c--c,xxxxxx,hhmmss.ss,x.x,cc,x.x,x.
Technical reference 6.9.9 VDM - VHF data link message This sentence is used to transfer the contents of a received AIS message (as defined in ITU-R M.1371) as received on the VHF Data Link (VDL) using 6 bit ASCII data encapsulation. !--VDM,x,x,x,a,s--s,x*hh Field number Description 1 x Total number of sentences needed to transfer the message, 1 to 9 2 x Sentence number, 1 to 9 3 x Sequential message identifier, 0 to 9 4 a AIS Channel, "A" or "B" 5 s--s Encapsulated ITU-R M.
Drawings 7 Drawings 7.1 AIS transceiver overall dimensions 172 mm 157 mm 112 mm 85 mm 105 mm 195 mm 7.
Drawings 7.3 Dash mount bracket fixing holes (drill drawing) (not to scale) Drill for screw size No. 8 (4-PL) Tap drill size No. 29 (3mm drill is sufficient) 40.0mm 120.0mm 108mm 21.3mm 7.
Drawings Page 72
Installation record 8 Installation record The following installation record should be completed and retained on board the vessel once the AIS transceiver has been installed and commissioned.
Installation record Connected equipment type (where applicable note equipment model and AIS data port in each case) (D)GPS receiver Gyro compass ROT indicator Speed log ECDIS Radar Other equipment Power supply The following drawings should be provided and attached to this installation record: ● Antenna layout for VHF and GPS antennas ● AIS arrangement drawing ● Block diagram showing interconnection of equipment Maintenance record Modification record number 1 2 3 4 5 6 8 9 10 Installer detail Installed by (
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