Furuno FMD-811 - Manual (Page 8)

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15. Interface NMEA
Input
Own ship’s position:
RMA>RMC>GLL
(GLL is available Ver.5 and after.)
Speed: RMA>RMC>VTG>VHW
Heading (True):
HDT>VHW>HDG>VHW>HDM
Heading (Magnetic):
HDM>VHW>HDG>VHW>HDM
Course (True):
RMA>RMC>VTG
Course (Magnetic):
VTG>RMA>RMC
Waypoint (L/L, Range, Bearing):
RMB>BWC>BWR
Loran time difference:
RMA>GLC>GTD
Water depth: DPT>DBK, DBS, DBT
Water temperature: MDA>MTW
Time: ZDA
XTE: RMB>XTE>APB
Output
TLL: On using “HM OFF” key.
RSD: A cycle of four seconds