Furuno GP-7000F - Manual (Page 102)

10. VIDEO SOUNDER OPERATION
10-16
10.8 White Marker
The white marker functions to display a particular echo color in white. For
example, you may want to display the bottom echo in white to discriminate fish
echoes near the bottom.
1. Push the [ENTER] knob to show the SENSITIVITY window.
GAIN 50* 000
NOISE LIMITER HIGH
CLUTTER 0
WHITE MARKER OFF
SIGNAL LEVEL OFF
*: For menu operation, both
of 50 and 200 frequencies appear.
Sensitivity window
2. Rotate the [ENTER] knob to choose WHITE MARKER and then push the
[ENTER] knob to show the white marker window.
OFF
01
White marker window
3. Rotate the [ENTER] knob to choose the value, and then push the [ENTER
knob.
4. Rotate the [ENTER] knob to choose the color to display in white. (16:
strongest color, 0: weakest color)
As your rotate the knob, the number in the white marker window changes, the
white marker on the echo strength bar shifts and the chosen echo color is
displayed in white.
White marker shows
color currently
displayed in white.
Color bar when white marker function is active
5. Push the [ENTER] knob and [MENU] key in order to close the menu.
To turn the white marker function off, choose “OFF” from the white marker
window.