Si-tex ES502, User Manual

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36 User Manual
6.2 How can I set optimal operating parameters.
Optimal operating parameters can be set accordingly with the intended use of the
Fish Finder, anyway to quickly get optimal operational parameters for fishing it is
possible to select the Fish preset from the Fish Finder Setup menu, while for
cruising it is possible to select the Cruise preset.
6.3 What are preset modes?
Preset modes are pre-defined settings of the Fish Finder operating parameters.
You can use them to quickly set the Fish Finder in the most commonly used
operating modes. These are:
♦
Cruise: sets the Fish Finder in full auto mode with the sensitivity set-
tings (GAIN OFFSET, NOISE level and STC) optimized for displaying at
best the bottom.
♦
Fish: sets the Fish Finder in full auto mode with the sensitivity setting
optimized for target searching.
6.4 How can I restore the Fish Finder default operating
parameters?
Simply select the Cruise or the Fish preset. This will restore optimal operating
parameters for either cruising or fishing.
6.5 Can I always leave the Fish Finder in Full Auto/(auto gain
and auto range) mode?
Yes, but note that the full auto mode suits 90% of the cases, however in extreme
situations the auto modes may fail and thus it is necessary to switch to the Manual
mode.
6.6 What are extreme situations in which auto modes may
fail?
When the bottom is very deep, at high boat speed, when the bottom is very
shallow (< 5 feet), when the water is full of materials in suspension, with bad sea
conditions.
6.7 What should I do if the auto modes fail?
Failure of auto modes can happen for various reasons. Hereafter you can find a
range of possibilities.
6.7.1 Auto-range fails in very shallow waters displaying a digital depth
readout deeper than the actual value. What should I do?
This usually happens if the STC is set to LONG or MID and the bottom is shallow
or SHORT if the bottom is very shallow causing the auto-range to hook to the
second or third echo from the bottom (since in shallow waters the sound bounces
more times back and forth from the surface to the bottom). Try decreasing the
STC value to SHORT in shallow waters or to switch it to VERY SHORT or OFF.
6.7.2 Auto range fails, and the digital depth readout displays a very
shallow reading. What should I do?
This usually happens if the STC is off or is set to a low value causing disturbances from
surface clutter to be stronger than bottom echoes. Try increasing the STC value. As
general rule STC has to be set as in shallow waters and LONG in depth waters.