White Marker - Furuno GP-3500F-D Operator's Manual

11.9

White Marker

The white marker functions to display a particular echo 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 show the main menu.
2. Press the [9] key to show the ECHO SOUNDER SETUP menu.
3. Press the [4] key to show the WHITE MARKER window.
4. Rotate the [ENTER] knob to select color to display in white.
As you rotate the [ENTER] knob, the number (corresponds to echo number) in
the marker window changes, the white marker on the echo strength bar shifts
and selected echo color is displayed in white.
Echo strength bar (16 color) when white marker function is active
5. Press the [ENTER] knob.
6. Press the [MENU] key several times to close the menu.
Note: To turn the white marker function off, select OFF at step 4.
11. VIDEO SOUNDER OPERATION
WHITE MARKER
OFF
White marker window
←
White marker shows
color currently
displayed in white.
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