Hemisphere GPS Crescent A100, User Manual, Page: 33 / 44

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Appendix
A: Troubleshooting
Table A-1 provides a checklist to troubleshoot common problems
and their solutions for the Crescent A100.
Table A-1: Troubleshooting
Problem Possible solution
Receiver fails to
power • Verify polarity of power leads
• Check integrity of power cable
connections
• Check power input voltage
(7 - 36 VDC)
• Check current restrictions imposed by
power source (maximum is
250 mA)
No data from
Crescent A100 • Check receiver power status (LED)
• Check integrity and connectivity of
power and data cable connections
• The volume of data requested to be
output by the Crescent A100 could be
higher than what the current baud rate
supports. Try using 19,200, or higher,
as the baud rate for all devices.
No GPS lock • Check integrity of cable connections
• Verify Crescent A100’s unobstructed
view of the sky
875-0163-000 (Crescent A100).book Page 26 Tuesday, November 13, 2007 11:29 AM