NMEA Manual based on MediaTek chipset - Manual
FTX-HW-13002-A
Preliminary
Page 6 of 39
Type
Description
xxmm.dddd
Latitude coordinate.
xx=degrees; mm=minutes; dddd=decimal part of minutes
<N|S>
Character denoting either N=North or S=South.
yyymm.dddd
Longitude coordinate.
yyy=degrees; mm=minutes; dddd=decimal part of minutes
<E|W>
Character denoting either E=East or W=West.
hhmmss.ddd
UTC time of the fix.
hh=hours; mm=minutes; ss=seconds; ddd=decimal part of seconds
S
Status indicator.
A=valid; V=invalid
M
Mode indicator.
A=autonomous; N=data not valid
1.5
RMC - Recommended Minimum Specific GNSS Data.
Time, date, position, course and speed data.
Message start as “$GNRMC” in IT530M default mode both GPS and Glonass constellation.
Example:
$GPRMC,114353.000,A,6016.3245,N,02458.3270,E,0.01,0.00,121009,,,A*69
Example IT530M hybrid mode:
$GNRMC,105440.000,A,6012.5669,N,02449.6536,E,0.00,0.00,061112,,,D*70
Format:
$GPRMC,hhmmss.dd,S,xxmm.dddd,<N|S>,yyymm.dddd,<E|W>,s.s,h.h,ddmmyy,d.d, <E|W>,M*hh<CR><LF>
Type
Description
hhmmss.dd
UTC time of the fix.
hh=hours; mm=minutes; ss=seconds; dd=decimal part of seconds
S
Status indicator.
A=valid; V=invalid
xxmm.dddd
Latitude coordinate.
xx=degrees; mm=minutes; dddd=decimal part of minutes
<N|S>
Character denoting either N=North or S=South.
yyymm.dddd
Longitude coordinate.
yyy=degrees; mm=minutes; dddd=decimal part of minutes
<E|W>
Character denoting either E=East or W=West.
s.s
Speed in knots.
h.h
Heading
ddmmyy
UTC Date of the fix.
dd=day of month; mm=month; yy=year
d.d
Magnetic variation in degrees, not supported
<E|W>
Letter denoting direction of magnetic variation. Either E=East or W=West. Not supported
M
Mode indicator
A=autonomous; N=data not valid
1.6
GSV - Satellites in view
Number of satellites in view, satellite ID (PRN) numbers, elevation, azimuth and SNR value. The information for
four satellites is a maximum per one message, additional messages up to maximum of eight are sent if needed.
The satellites are in PRN number order.
