Furuno FCV-1200LM - Manual (Page 25)

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1.10 Adjusting Clutter
When blue dots appear over the entire screen (mainly caused by dirty water), use the clutter
function to eliminate them.
1. Rotate the [FUNCTION] switch to select CLUTTER.
The clutter menu appears.
Change echo color
assignment.
[-/+]: Change setting
[EXIT (knob)]: Exit
LOW HIGH
C L U T T E R
Color changes
depending on
clutter level.
HF•CLUTTER : 4 (0 7)
HF•CURVE : STD
LF•CLUTTER : 4 (0 7)
LF•CURVE
: STD
Clutter menu
•
For dual display
→
Go to step 2.
•
For other modes
→
Go to step 3.
2. Press the [!] or ["] key to select HF CURVE or LF CURVE as appropriate.
3. Press the [-] or [+] key to open the clutter curve selection window (default: STD).
STD LINEAR CUSTOM
Clutter curve selection window
STD: The higher the clutter level the smaller weak echoes are displayed. (default setting)
LINEAR: The higher the clutter level the smaller all echoes are displayed.
CUSTOM: Applies the user clutter settings to the clutter menu.
4. Press the [!] or ["] key to close the window.
5. Press the [!] or ["] to select HF CLUTTER or LF CLUTTER as appropriate.
6. Press the [-] or [+] key to set clutter rejection level. (0-7, 0 turns clutter rejector off.)