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current test signal and by the previous test signal differs,
plus the varying height of the sea bed contour, pictures
displayed on the screen will occupy different heights,
causing the vibrating phenomenon.
5. Nothi
5. Nothing appears
ng appears on the display even you can see fish
on the display even you can see fish
under the sensor.
under the sensor.
a) Oil, dirt and fuel might cause a film to form on the
sensor and reduce its effectiveness. Cleaning the
surface of the transducer might help.
b) Electrical noise nearby can interfere with the sonar,
which will cause some weaker signals being elimin-
ated.
6. The dis
6. The display becom
play become so cluttered that you even could
e so cluttered that you even could
not achieve a clear bottom
not achieve a clear bottom
Such cluttered display maybe caused because:
a) The water is too low
b) The water is too turbid
c) There are so much debris in the water,
Summary of Contents for FC80
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