Trimble Outdoors SK8 - Manual (Page 162)

C-16 Lassen-SK8 Embedded GPS Module
Trimble ASCII Interface Protocol (TAIP)
C.14 LN Long Navigation Message
Data String Format:
AAAAABBBCCCDDDDDDDEEEEFFFFFFFGGGGGGGHHIIIJK
KKKLMMMNOOPPQQPPQQ...PPQQRRRRRRRRRRST
Table C-14. Long Navigation Message Data String Descriptions
*
Note – At least 2 satellites are required to get the LN Message.
Position is in latitude (positive north) and longitude (positive east) WGS-84. Heading is in
degrees from True North increasing eastwardly. The GPS time of day is the time of fix
rounded to the nearest second.
*
Note – The data in this message is to be considered invalid and should not be used, if the
Age of Data Indicator is equal to 0 (signifying data not available).
Item # of Char UNITS Format Value
GPS Time of day 8 Sec AAAAA.BBB
Latitude 10 Deg CCC.DDDDDDD
Longitude 11 Deg EEEE.FFFFFFF
Altitude above MSL 9 Ft GGGGGGG.HH
Horizontal Speed 4 MPH III.J
Vertical Speed 5 MPH KKKK.L
Heading 4 Deg MMM.N
Number of SVs used 2 n/a OO
SV Id (See note) 2 n/a PP
IODE (See note) 2 n/a QQ
Reserved 10 n/a RRRRRRRRRR
Source 1 n/a S 0 = 2D GPS
1 = 3D GPS
2 = 2D DGPS
3 = 3D DGPS
6 = DR
8 = Degraded DR
9 = Unknown
Age of Data Indicator 1 n/a T 2 = Fresh, <10 sec
1 = Old, >10 sec
0 = Not available
Total 65 Plus the number of SV's used times 4