Furuno BACK GP-80 - Manual (Page 87)

A-15
TLL - Target latitude and longitude
$--TLL,xx,llll.lll,a,yyyyy.yyy,a,c--c,hhmmss.ss,a,a*hh<CR><LF>
| | | | | | | | | |
| | | | | | | | | +--------- 8
| | | | | | | | +----------- 7
| | | | | | | +------------- 6
| | | | | | +-------------------- 5
| | | | | +-------------------------- 4
| | | +-----+------------------------------ 3
| +----+------------------------------------------ 2
+----------------------------------------------------- 1
1. Target number 00 - 99
2. Latitude, N/S
3. Longitude, E/W
4. Target name
5. UTC of data
6. Target status(see note)
7. Reference target=R,null otherwise
8. Checksum
NOTE - Target status
L = lost,tracked target has beenlost
Q = query,target in the process of acquisition
T = tracking
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
S = Simulator
N = Data not valid
The positioning system Mode indicator field shall not be a null field.