Step 9: Integrate the System

37

 

 

 

Course computer NMEA 1 and 2 inputs

 

 

 

 

NMEA 0183 received

Information extracted

 

 

 

 

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 NMEA 1 first. If NMEA 1 has no data, the course computer looks at NMEA 2. If both channels have the same type of navigation data, the course computer uses NMEA 1.

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

heading

HDT

 

 

 

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.

Step 9

Page 45
Image 45
Raymarine 150/400 manual Course computer Nmea 1 and 2 inputs, Nmea 0183 received Information extracted