Using the External Computer Data Link
MicronNav System
0656-SOM-00001-07
120
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‘$GPGGA’ Reply Data Structure
Data Description
Data Range
Field Range
Checksum (in Hexadecimal)
(XOR of bytes between, but not inclusive
of, '$' and '*')
00 to FF
cc
(Carriage Line Feed)
N/A
<CR><LF>
Example:
UTC Time of reading = 144014.71, Target Latitude = 54º 22’ 21.74” (N), Target Longitude = 2º 56’
25.07” (W).
ASCII Output Always (on a single line) =
“$GPGGA,144014.71,5422.3624,N,00256.4178,W,2,07,2.2,0.0, M,0.0,M,1.2,1234*5C<CR><LF>”
Where; “<CR>” is Carriage Return (ASCII code 13), “<LF>” is Line Feed (ASCII code 10).