150 G12 OEM Board & Sensor Reference Manual
Example full GGA message structure:
$GPGGA,123456.12,1234.123456,N,12345.123456,W,2,12,12.1,12345.12,M,-
12.1,M,123,1234*7F
Example standard GGA message structure:
$GPGGA,123456.12,1234.12345,N,12345.12345,W,2,12,12.1,12345.1,M,12,1234*7
F
Typical GGA message:
$GPGGA,183805.50,3722.36223,N,12159.82741,W,2,7,2.8, 16.12,M,-
31.24,M,005,0001 *6F
Table 4.75 describes the typical GGA response message.
d14 Differential base station ID number ‘0’ - ‘1023’ ‘0’ - ‘1023’
hh Checksum 2-character hex
Table 4.75. Typical GGA Message
Item Description
$GPGGA Header
183805.50 Time of position fix
3722.36223 Latitude
NNorth
12159.82741 Longitude
WWest
2 RTCM differential corrections applied to position fix
7 Number of satellites used in position computation
2.8 HDOP
+00016.12 Altitude
M Altitude unit of measure (meters)
-31.24 Geoidal separation value
M Geoidal separation unit of measure (meters)
005 Age of differential corrections
0001 Base station ID number
6F Checksum
Table 4.74. $GPGGA Message Format (Continued)
Parameter Description Range (FUL) Range (STD)
G12RevD.book Page 150 Tuesday, April 2, 2002 4:33 PM
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