Nmea Gll Datagram; Nmea Hdg Datagram - Simrad TV80 Reference Manual

Simrad TV80 Reference Manual

NMEA GLL datagram

The NMEA GLL datagram transfers the latitude and longitude of vessel position, the time of
the position fix and the current status from a global positioning system (GPS).
Format
$--GLL,llll.ll,a,yyyyy.yy,a,hhmmss.ss,A,a*hh<CR><LF>
Description
1 : Talker identifier
$—
2 : Datagram identifier
GLL
3 : Latitude North/South (Degrees, minutes and hundredths)
llll.ll,a
= North
N
= South
S
4 : Longitude East/West (Degrees, minutes and hundredths)
yyyyy.yy,a
= East
E
= West
W
5 : Coordinated Universal Time (UTC) of the current position
hhmmss.ss
6 : Status
A
= The data are valid.
A
= The data are not valid.
V
7 : Mode indicator
a
8 : Checksum
*hh

NMEA HDG datagram

The NMEA HDG datagram provides heading from a magnetic sensor. If this reading is
corrected for deviation it produces the magnetic heading. If it is offset by variation, it
provides the true heading.
Format
$--HDG,x.x,z.z,a,r.r,a*hh<CR><LF>
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