Furuno GP-3700F, Operator'S Manual

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11. ECHO SOUNDER
11-15
2. Select [9. ECHO SOUNDER SETTING].
3. Select [4. ERASING WEAK ECHOES].
4. Set the color erasion level. The larger the setting value, the stronger the echo to
erase. Set the level to “0%” to turn off the function for erasing weak echoes.
5. Press the DISP key to close the menu.
11.10 How to Highlight Echoes in White Color
11.10.1 White marker
The white marker displays the selected echo color in white. For example, you may
want to display the bottom echo in white to discriminate fish echoes near the bottom.
1. Press the MENU key to open the main menu.
2. Select [9. ECHO SOUNDER SETTING].
3. Select [5. WHITE MARKER SETTING].
4. Select the color to display in white (setting range: 0 to 16, 0 is off). The color, cor-
responding to the selected echo number, of the color bar changes to white.
5. Press the DISP key to close the menu.
1
16 (When setting the color
to 16, the strongest echo is
displayed in white.)
Echoes in color corresponding
to the number set at the
window are displayed in white
(3 in this case).