ACR Electronics AIS Installation Manual

3.8.7 Calculated ValuesProcessed dynamic ship data such as position, SOG etc. is generated by NMEA sentences.Exceptions:If "Calc" is displayed on the sensor analyze screen, this means that this sentence is used forcalculating dynamic ship data.ROT out of HDTROT direction left / right -/+ will be calculated out of the HDT Message, if a TIROT sentence(only “TI”-Talker devices are valid) is not connected.ROT > +10°/min  Output +720°/minROT < -10°/min  Output -720°/minOther  Output 0°/minCOG information out of VBWCOG will be generated out of VBW, if HDT is available. In this case the atan2 of thelongitudinal and transversal speed plus heading is basis of the calculation.Longitudinal/Transversal SOG from VBWIf VBW is available, SOG is also calculated without HDT.3.8.8 Versions of NMEA SentencesRMCv2.30 - $GPRMC,122500.00,A,5330.1234,N,01001.2345,E,11.2,352.2,120202,2.0,E,Av2.20 - $GPRMC,122500.00,A,5330.1234,N,01001.2345,E,11.2,352.2,120202,2.0,EGLLv2.30 - $GPGLL,5330.1234,N,01001.2345,E,141800.00,A,Av2.00 - $GPGLL,5330.1234,N,01001.2345,E,141800.00,Av1.50 - $GPGLL,5330.1234,N,01001.2345,EGGAv2.00 - $GPGGA,092854,5330.1234,N,01001.2345,E,1,3,1.2,65.2,M,45.1,M,,v1.50 - $GPGGA,092854,5330.1234,N,01001.2345,E,1,3,1.2,65.2,M,45.1,MVBWv2.30 - $VDVBW,11.00,01.00,A,12.00,02.00,A,,V,,Vv2.20 - $VDVBW,11.00,01.00,A,12.00,02.00,AVTGv2.30 - $GPVTG,350.0,T,,M,10.0,N,,K,Av2.20 - $GPVTG,350.0,T,,M,10.0,N,,KOSDv2.30 - $INOSD,359.9,A,5.2,B,12.6,B,150.0,1.2,Nv2.20 - $INOSD,359.9,A,5.2,B,12.6,B,150.0Y1-03-0204 Rev. L29