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5. 3D MODE
1
*
: The start and end angle of the available range is dependent on offsets set at instal-
lation. See the Installation Manual for details.
2
*
: You can change the interval at [4 Sweep Angle Interval] to suit your requirements.
See section 9.3.3.
Note: The sweep angle can also be adjusted from the sweep angle indication. Put the
cursor on the indication to highlight it in blue then spin the scrollwheel.
5.8
How to Erase Weak Echoes
Sediment in the water or reflections from plankton may be painted on the display in
low intensity tones, as shown in the illustration below. You can remove these unwant-
ed echoes with the color erase feature.
1. Open the menu.
2. Select [7 3D Functions], then left-click.
3. Select [1 Echoes], then left-click.
4. Select [2 Signal Level], then left-click.
5. Left-click the
As the setting increases, reflections are removed in order, from
weakest to strongest.
6. Select [Quit], then left-click.
7. Close the menu.
5.9
How to Reject the Surface Noise
To reject the surface noise due to the sea surface reflections, etc., do as follows:
1. Open the menu.
2. Select [7 3D Functions], then left-click.
3. Select [1 Echoes], then left-click.
4. Select [3 Surface Noise Reject], then left-click.
5. Left-click the
The larger the setting, the greater the degree of surface noise re-
jection.
6. Select [Quit], then left-click.
7. Close the menu.
5-14
R 200m
T 90°
Place the cursor on the sweep indication.
R0 0°
3D G 5.0
Spin the scrollwheel to change the setting
P 1
after the setting is highlighted.
or
button to select the desired setting.
or
button to select the desired setting.
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