Too low sensitivity
Increase the sensitivity. Or set to
Auto Gain (automatic sensitivity).
<Installation of transducer is bad>
・
Transducer glued inside the boat’s
bottom almost come loose.
・
Transducer installed on boat does
not face just under the boat.
Re-install the transducer at
adequate position.
Rubbish, weed or etc. attached on the
surface of transducer.
Remove the attachment well.
As the reflected echoes are very weak at the below described place, the
image with low sensitivity may be shown. But it is not trouble.
Bottom or fish school
is not displayed well.
ヘドロや腐葉土
where there are
many sludge.
where there
are many
sea weeds.
where there are
many mud of
rubbish.
where the water is
whirled by rapid
current.
Too high sensitivity.
Decrease the sensitivity. Or set to
Auto Gain (automatic sensitivity).
Interference with other boat’s fish
finder.
Noise disappears if adequate distance
between own boat and other keeps.
Many noise appear on the
screen.
Noise from engine
.
Change routing of cables such as
transducer, power cable, etc. Separate
from engine as far as possible.
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