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1) 1) Please check the radio link first, or just check
the power on message box to find if all sensors
were successfully connected or not.
2) Oil, dirt and fuel might cause a film to form on the
transducer and reduce its effectiveness. Cleaning
the surface of the transducer might help.
3) Bad connection of the transducer
.
1) If the speed of boat (with GPS receiver mounted
on) is less than 0.6m/s, the GPS data of boat
heading direction will be always wrong. And
generally the boat is very slow when it is close to
the desination. So, it is difficult for you to precisely
operate the boat reaching to the desitination only
with GPS function.
2) With the compass, you can observe the precise
heading direction of boat even it is very slow.
failure
corrective action
No depth readout on display
Why compass function is
needed? I think GPS is
enough for navigation of
my boat.
