CVS-128/128B Chapter 1 Basic Operation
0093112802-06 1-17
Caution: When the value of [Detect
adjust f] is set at 5 or 6, the size of
fish can not be specified and there
may be cases where no numerical
figures are displayed or only "----" is
displayed. When there is no display
of numerical figures, it is judged that
fish are too small. When "---" is
displayed, it is judged that fish is too
big.
Big fish / Big fish color
The fish bigger than the set value [cm] is
specified as big fish.
Select keys of [Display2] [Big fish].
Colors for values of big fish can be assigned.
Select keys of [Display2]
[Color table 2]
[Big fish color].
The values displayed by this function may be
incorrect depending on various environmental
conditions. In use of these values, please
understand the following factors of error, and
use them as reference:
[Factors of error]
1 When there are overlapping responses,
all of them may be displayed to show the
magnitude of a point.
2 The strength of reflection may depend on
the output of transducer unit and may
result in a factor of error.
3 The strength of reflection may depend on
the kind of fish and may result in a factor
of error. As for the fish such as the squid
which don't have an air bladder, the error
is big.
4 Fish banks, fishing net, fishing equipment,
air bubbles and floating objects, etc. may
be detected and displayed.
5 When the transducer unit is mounted in
inner-hull, there may be cases where
response cannot be detected depending
on attenuation, and large error may be
generated.
6 The strength of reflection may depend on
the difference of ship handling such as
stoppage and cruising, and may result in
a factor of error.
7 Each transducer unit may have difference
in transmission/receiving performance to
cause error.
8 When there is dirt in the sea and the
plankton layers have been generated, it
becomes the factor of the error margin.
Points to note in use of
fish symbol
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