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8. FISH FINDER
How to set the bottom discrimination display
Note: Auto range is automatically turned on when the bottom discrimination display is
activated.
1. Swipe the bottom of the screen upwards to show the layered menu.
2. Tap the toggle box at [Bottom Discrimination] to select [ON].
3. Tap [Home] => [Settings] => [Fish Finder], then tap [Bottom Discrimination].
4. Select [Graphic Representation] or [Probability Graph].
5. Tap the toggle box at [Legend] to select [ON] or [OFF] as required.
6. Close the menu.
About the bottom discrimination display
• The bottom discrimination display provides an estimate of bottom composition. Ac-
tual composition may be different.
• The high and low frequencies are alternately transmitted, regardless of current dis-
play selection. The TX interval is slower when this feature is active.
• Operating environment: Depths between 16 to 328 ft; Speed of 10 knots or less.
• This feature uses the range from the boat's draft.
• Be sure that the transducer is mounted straight. Otherwise the bottom discrimina-
tion display may not function accurately.
8.5
Automatic Fish Finder
Your fish finder can be adjusted automatically, allowing you to do other tasks.
The automatic fish finder function automatically adjusts the gain, clutter, TVG and
echo offset. The main features of the automatic mode are as shown below.
There are two types of automatic fish finder modes: [Cruising] and [Fishing]. [Cruising]
tracks the bottom, and [Fishing] searches for schools of fish. [Cruising] uses a higher
clutter removal setting than [Fishing]. Do not use [Cruising] when your purpose is to
find fish, because the clutter removal processing can erase weak fish echoes.
8.5.1
How to select the automatic mode
To select an automatic mode, tap the cogwheel icon to open the [Settings] menu
then tap [Auto Fish] or [Auto Cruise] as required.
[Auto Cruise] suppresses weak echoes (small targets) and shows strong echoes (sea-
bed, fish schools) clearly, making this mode handy for checking the seabed at a
glance, while underway.
[Auto Fish] shows weaker echoes clearly and is more suited for use after arriving at a
fishing spot.
8.5.2
How to adjust the gain in the auto mode
The gain controls how echoes of different strengths are displayed. Gain is automati-
cally adjusted; however, you can fine tune the gain according to meet local character-
8-4
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