Step 9: Integrate the System 37
Step 9
RMB cross track error, bearing to waypoint, distance to
waypoint, waypoint number
RMC course over ground (COG), speed over ground
(SOG), latitude/longitude, time, variation
VHW speed through water, heading
VTG course over ground (COG), speed over ground
(SOG)
VWR relative apparent wind angle, relative apparent
wind speed
XTE cross track error
ZDA time, date
Note: When connected to a NMEA navigator, the course computer looks at
NMEA1 first. If NM EA 1 has no data, the course computer looks at NMEA 2.
Ifboth channel s have the same type of navigation data, the c ourse computer
uses NMEA1.
Course computer NMEA 1 output*
NMEA 0183 transmitted Information sent
HDM heading
* Note: Type 150G and Type 400G course computers provide fast heading
(HDM) output from NMEA 1 at 10 Hz 0.1° resolution. This fast heading data is
suitable for use with the MARPA function on radar equipment.
Course computer NMEA 2 output
NMEA 0183 transmitted Information sent (* if available)
BWC bearing to waypoint*, distance to waypoint*,
waypoint number*, time*
GLL latitude/longitude*, time*
HDG
HDM
HDT
heading
VTG course over ground* (COG), speed over ground*
(SOG)
* Note: The course computer will only transmit these items if it has received the
appropriate data.
Course computer NMEA 1 and 2 inputs
NMEA 0183 received Information extracted
81173_3.book Page 37 Thursday, June 7, 2001 11:51 AM