Mid-tech RX 400p, User Manual

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RX 400p
6-3 98-05044
R1
6.5 GPS NMEA Data Messages
The following subsections describe the data messages listed in Table 6-2 in detail.
Table 6-2 GPS NMEA Messages
Message Description
GPGGA Global Positioning System Fix Data
GPGLL Geographic Position – Latitude/Longitude
GPGSA GNSS (Global Navigation Satellite System) DOP and Active Satellites
GPGST GNSS Pseudorange Error Statistics
GPGSV GNSS Satellites in View
GPRMC Recommended Minimum Specific GNSS Data
GPRRE Range residual message
GPVTG Course Over Ground and Ground Speed
GPZDA Time and Date
6.5.1 GGA Data Message
The GGA message contains detailed GPS position information, and is the most
frequently used NMEA data message. In Table 6-3, the GGA data message is broken
down into its components. This message takes the following form:
$GPGGA,hhmmss.ss,ddmm.mmmm,s,dddmm.mmmm,s,n,qq,pp.p,saaaa
a.aa,M,
±
xxxx.xx,M,sss,aaaa*cc<CR><LF>