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C-22 Lassen-SK8 Embedded GPS Module
Trimble ASCII Interface Protocol (TAIP)
C.20 ST Status
Data String Format:
AABCDDEFGG
*
Note – This message provides information about the satellite tracking status and the
operational health of the sensor. This information is contained in five status bytes which
are output as five 2 digit hexadecimal values. The data format and the meanings of the
hex characters are given in the following tables.
Table C-20. Data String Hex Characters
Table C-21. Tracking Status Code
*
Note – In the tables below, an X in a column means that fault is being reported.
Item # of Char UNITS Format
Tracking Status Code 2 n/a AA (see table below)
Status Codes - Nibble 1 1 n/a B (see table below)
Status Codes - Nibble 2 1 n/a C (see table below)
Machine ID 2 n/a DD
Status Codes - Nibble 3 1 n/a E not currently used
Status Codes - Nibble 4 1 n/a F see table below
reserved 2 n/a GG not currently used
Value AA Meaning
00 Doing position fixes
01 Don't have GPS time yet
02 Not used
03 PDOP is too high
08 No usable satellites
09 Only 1 usable satellite
0A Only 2 usable satellites
0B Only 3 usable satellites
0C 6-Ch units only: the chosen satellite is unusable.