Saab R4-AIS Installation Manual

Also see for R4: Short Instruction guide Operator's manual

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Saab R4-AIS Installation Manual Manual pdf 45 page image

Mounting Page 44Document id: 7000 108-011 A22.16.3 Sensor interfacesThe R4 Transponder unit has three interfaces (meeting IEC 61162-1and 61162-2) for position, bottom track (BT) speed, heading and rateof turn (ROT) sensors.In general, sensors installed in compliance with other carriagerequirements of SOLAS Chapter V should be connected to the AIS.Although the fact that AIS comes on board does NOT establish aneed to install additional sensors above carriage requirements.The sensor information transmitted by the R4-AIS Shipborne ClassA Transponder System should be the same information being usedfor navigation of the ship.2.16.3.1 Sensor input data and formatsThe three sensor ports support data sentences input from varioustypes of ship sensors. The input data and format are shown in Table2-4. Details of each sentence can be found in Ref. [3].Additional information is given in Appendix [A.2] ñ Interpretationof IEC 61162-1 sentences.Table 2-4. Sensor input data and formatsSensor Data IEC 61162-1 sentencesGNSS Positioning system:- Time of position- Latitude / Longitude- Accuracy [and integrity status]Course Over Ground (COG)Speed Over Ground (SOG)RAIM indicatorDTM, GBS, GGA, GLL, GNS, GSA,GSV, HDT, RMC, ROT, VBW,VTG, ZDALog Course Over Ground (COG)Speed Over Ground (SOG)VBWGyro HeadingRate Of Turn (ROT)HDT, ROTRate-of-TurnIndicatorRate Of Turn (ROT) ROT2.16.3.2 Position (GGA, GLL, GNS, RMC, DTM etc.)GNSS position sensors normally have IEC 61162 outputs suitable fordirectly interfacing the R4 Transponder. However, it is important tonote the following:• The Geodetic Datum of the position data transmitted by thesensor shall be WGS84 and the IEC 61162 DTM sentenceshould be configured.• R4-AIS Shipborne Class A Transponder System is able toprocess two reference points for its antenna position, one forexternal and one for an internal sensor. Each antennaís referencepoint needs to be input to the AIS via the R4 Display (seesection 2.8.5). The R4-AIS Transponder automatically selects