2665 Series Operation Manual
EZT-2665-8000/6
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Page
50
of
64
S
ONAR
D
ATA STRINGS
/
C
ONTINUED
Vessel track made good and ground speed
$GPVTG,ttt.t,T,mmm.m,M,nnn.n,N,kkk.k,K*HHCL
Description
String code
Header
$GPVTG
True track made good (Degrees)
t
True
T
Magnetic track made good (Degrees)
m
Magnetic
M
Ground speed (Knots)
n
Knots
N
Ground speed (Km/h)
k
Km/h
K
Check Sum
H
Carriage return (CR)
C
Line feed
L
Note some of the fields may be left blank; this will vary depending on the GPS
receiver used.
Target position
$GPTLL,nn,llll.llll,N,yyyyy.yy,E,EasytrakAlpha,hhmmss.ss,T,*HHCL
Description
String code
Header
$GPTLL
target number (1 - 3)
nn
Latitude ddmm.mmmm
l
North or South (N/S)
N
Longitude dddmm.mmmm
y
East or West (E/W)
E
System ID string
EasytrakAlpha
Hour
h
Minute
m
Second
s
Status (T=tracking, L= Lost)
T
Check Sum
H
Carriage return (CR)
C
Line feed
L