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Appendix A: Troubleshooting
Table A-1 provides troubleshooting for common problems.
Table A-1: Troubleshooting
Symptom
Receiver fails to power
No data from V104n
No GPS lock
No SBAS lock
No heading or incorrect
heading value
Possible Solution
•
Check integrity of power cable connectors
•
Check power input voltage (6 to 36 VDC)
•
Check current restrictions imposed by power
source (minimum available should be > 1.0 A)
•
Check receiver power status to ensure the receiver
is powered (an ammeter can be used for this)
•
Check integrity and connectivity of power and data
cable connections
•
Verify the V104n has a clear view of the sky
•
Verify the lock status of GPS satellites
•
Verify the V104n has a clear view of the sky
•
Verify the lock status of SBAS satellites
Note: SBAS lock is only possible if you are in an
appropriate SBAS region; currently, there is limited
SBAS availability in the southern hemisphere.
•
Heading is from primary GPS antenna to secondary
GPS antenna, so the arrow on the underside of the
V104n should be directed to the bow side
•
Monitor the number of satellites and SNR values
for both antennas - at least four satellites should
have strong SNR values
40
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