Deluo TRISTAR25 User Manual
Page 18
Deluo Electronics http://www.deluo.com
18
4.1.7 VTG – Course Over Ground and Ground Speed
Purpose
Outputs actual track made good and speed relative to the ground.
Format
$GPVTG,xxx.x,T,xxx.x,M,xxx.x,N,xxxx.x,K*CS
Example
$GPVTG,000.0,T,003.3,M,000.0,N,0000.0,K*7E
Output Rate
Programmable using EverMore Binary Message 0x8E and 0x8F.
Field Name
Example Unit
Description
1 Message ID
$GPVTG
VTG protocol header
2 Heading
000.0
degree xxx.x
Heading of the receiver when moving
Leading zeros transmitted
3 True
T
Indicates true heading
4 Heading
003.3
degree Degrees
magnetic
Magnetic course over ground, 000 to 359
Degrees
Leading zeros transmitted
5 M
M
Indicates magnetic heading
6 Speed
000.0
knots xxx.x
Speed in knots
Leading zeros transmitted
7 N
N
Indicates speed in knots
8 Speed
0000.0
Km/hr xxxx.x
Speed in km/hr
Leading zeros transmitted
9 K
K
Indicates speed in km/hr
10 Checksum
*7E