User's Manual

A-97
A PPENDIX
A
GPS STATUS CODES
Appendix overview
This appendix describes codes that the GPS can generate. These codes are displayed on a
hand-held device manufactured to work with the GPS. Use these codes to determine if the
time output of the GPS is valid.
Table A.1 GPS status codes and meaning
Code Status Meaning
0 DOING_FIXES Receiver is navigating
1 GOOD_1SV Receiver is limiting using one satellite
2 APPX_1SV Approximate time
3 NEED_TIME Start-up
4 NEED_INITALIZATION Start-up
5 PDOP_HIGH Dilution of precision too high
6 BAD_1SV Satellite is unstable
7 0SVs No satellites usable
8 1SV Only 1 satellite usable
9 2SVs Only 2 satellites usable
10 3SVs Only 3 satellites usable
11 NO_INTEGRITY Invalid solution
12 DCORR_GEN Differential corrections
13 OVERDET_CLK Overdetermined fixes