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7. FISH FINDER
7-8
7.4.3 How to Shift the Range
The basic range and range shift functions let you select the depth you can see on the
screen. This function is not available when [Auto Range] is active.
1. Select [Menu] on the menu icon bar to open the main menu.
2. Select [Sounder].
3. Select [Range Shift] to open the software keyboard.
4. Set the range then select [Confirm].
5. Select [Close] to exit the menu.
7.4.4 How to adjust the gain
The gain controls how echoes of different strengths are displayed. Set the gain to
show a slight amount of noise on the screen. Increase the gain for greater depths and
lower the gain for shallow waters.
Note: This function is not available in the auto mode.
1. Select [Adjust] from the RotoKey menu.
2. Select [HF Gain] or [LF Gain].
3. Drag the circle icon to set the gain (see the figure below).
7.4.5 How to reduce the clutter
Low intensity “spots” of noise appear over most of the screen like in the illustration
shown below. These spots are caused by sediment in the water or noise. You can re-
duce this type of noise.
Note: This function is not available in the auto mode.
Gain too high
Gain proper
Gain too low
0
RADAR
RADAR
DATA 2
DATA
2
DATA 1
DATA
1
Drag the circle icon
to set the gain.
151


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