14
Troubleshooting
Problems Possible Reasons Methods
No GPS’s CN
value output but GPS timer is
counting
Weak or no GPS signal at the
place of M-215+
Test under an open sky at a
fixed location and run the Mini
GPS Viewer “Cold start”
function.
Cannot open the COM port Connection interrupted or
COM port is conflicted/
occupied by other programs.
Check the connection again,
Check and close other
programs that might conflict
with.
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