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2. HORIZONTAL MODE
2.9.5
Noise limiter
Weak, unwanted reflections, colored light-blue or green, are often caused by dirty wa-
ter, plankton layers, or ship's noise. The noise limiter can reduce the effects of these
unwanted reflections. Raising the setting causes unwanted reflections to be displayed
in colors of blue to background color.
1. Press the MENU/ESC key to show the main menu.
2. Select [Display Setting] then push the left-click button.
3. Press H/V/S key to select the [H1] or [H2] tab.
4. Select [Noise Limiter] then push the left-click button.
5. Select or then push left-click button to change setting. The setting range is
0 to 15. The higher the setting, the higher the degree of the suppression.
6. Select [Quit] then push the left-click button to close the box.
7. Long-press the MENU/ESC key to close all menus.
2.9.6
Reverberation
You may select the length of reverberation for the echo signal, with [Reverberation] on
the [TX/RX Setting] (H1 or H2 tab). The setting range is 0-3. The larger the value, the
lower the reverberation effects. Set the length of reverberation appropriately to make
it easier to see the echo signal.
2.9.7
Echo average
[Echo Average] ([H1] or [H2] tab) on the [Picture Setting] menu adjusts echo
afterglow - the amount of time an echo signal remains on the screen. This feature can
be useful for watching echo movement. The setting range is 0 to 11.
Setting between 1 and 3: Echoes are gradually displayed and afterglow remains on
the screen longer as the setting is increased.
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