Data Sheet

GPS Module
L80 GPS Protocol Specification
L80_GPS_Protocol_Specification Confidential / Released 8 / 41
$
Each NMEA message starts with ‘$’
GPRMC
Message ID
UTC time
Time in format ‘hhmmss.sss’
Data valid
‘V’ =Invalid
‘A’ = Valid
Latitude
Latitude in format ‘ddmm.mmmm’ (degree and minutes)
N/S
‘N’ = North
‘S’ = South
Longitude
Longitude in format ‘dddmm.mmmm’ (degree and minutes)
E/W
‘E’ = East
‘W’ = West
Speed
Speed over ground in knots
COG
Course over ground in degree
Date
Date in format ‘ddmmyyyy’
Magnetic variation
Magnetic variation in degree, not being output
E/W
Magnetic variation E/W indicator, not being output
Positioning mode
‘N’ = No fix
‘A’ = Autonomous GNSS fix
‘D’ = Differential GNSS fix
*
End character of data field
Checksum
Hexadecimal checksum
<CR><LF>
Each of message
2.2. GPVTG
VTG, track made good and ground speed.
Example:
$GPVTG,0.0,T,,M,0.0,N,0.1,K,A*0C
Field
Description
Quectel
Confidential