Furuno LC-90 Mark-II, Operator'S Manual, Page: 98 / 101

APC-7
VTG – Course over ground and ground speed
$--VTG,x.x,T,x.x,M,x.x,N,x.x,K,a*hh<CR><LF>
| | | | | | | | | |
| | | | | | | | | +------- 6
| | | | | | | | +--------- 5
| | | | | | +--+----------- 4
| | | | +--+----------------- 3
| | +--+----------------------- 2
+--+----------------------------- 1
1. Course over ground, degrees true
2. Course over ground, degrees magnetic
3. Speed over ground, knots
4. Speed over ground, km/h
5. Mode indicator(see note)
6. Checksum
NOTE Positioning system Mode indicator:
A = Autonomous
D = Differential
E = estimated(dead reckoning)
M = Manual input
S = Simulator
N = Data not valid
The positioning system Mode indicator field shall not be a null field.
WCV – Waypoint closure velocity
$--WCV,x.x,N,c--c,a*hh<CR><LF>
| | | | | |
| | | | | +------- 4
| | | | +--------- 3
| | +--+----------- 2
+--+---------------- 1
1. Velocity component, knots
2. Waypoint identifier
3. Mode indicator(see note)
4. Checksum
NOTE Positioning system Mode indicator:
A = Autonomous
D = Differential
E = estimated(dead reckoning)
M = Manual input
S = Simulator
N = Data not valid
The positioning system Mode indicator field shall not be a null field.