Magellan GPS PROMARK X, User Manual

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iv
Chapter 8 — Troubleshooting and Operating Tips
Error and Warning Messages ..................................... 8-1
Operating Problems ................................................... 8-5
Operating Tips ......................................................... 8-10
Unsure of Your Position When Initializing ............ 8-11
Search and Acquisition Errors .............................. 8-11
Initialization Errors ............................................... 8-11
The Signal Environment ....................................... 8-11
Insufficient Number of Satellties .......................... 8-12
Unit Searches Constantly ..................................... 8-13
Accuracy Warning Symbol ................................... 8-13
Signal Quality ...................................................... 8-13
Old Data ............................................................. 8-14
Choosing a Datum .................................................. 8-14
Using the Unit Near the Poles .................................. 8-15
Storing the Unit ....................................................... 8-15
When Nothing Else Works ....................................... 8-15
Magellan's Customer Support ................................. 8-16
Appendix
1 — Global Positioning System .................................. A-1
2 — Differential Theory ............................................. A-5
3 — User-Defined Datum Worksheet ......................... A-9
4 — Table of Constants ........................................... A-11
5 — British, Irish, and UPS Grids .............................. A-21
6 — User-Defined Grid Worksheet........................... A-23
7 — State Plane Coordinate Constants .................... A-25
8 — Waypoint Log, Grid .......................................... A-45
9 — Waypoint Log, Lat/Lon ..................................... A-47
10 — Position Dilution of Precision .......................... A-49
11 — Signal Quality ................................................. A-50
12 — Glossary ......................................................... A-51