Furuno Ls4100 Manual De Usuario

 

 

Interference from other acoustic 
equipment operating nearby or other 
electronic equipment on your boat may 
show itself on the display as shown in 
the figure below. 
To suppress interference, do the 
following: 
1.  Press the [MENU/ESC] key to open 

the main menu. 

2. Use ▲ or ▼ to choose NOISE LIMIT 

from page 1 of the menu. 

3. Press ► to show the options 

window. 

4. Use ▲ or ▼ to choose the degree of 

suppression desired; Off, Low, 
Medium, or High (highest). 

5.  Press the [MENU/ESC] key to close 

the menu. 

Interference from
other sounder

Electrical interference

Turn the noise limiter off when no 
interference exists, otherwise weak 
echoes may be missed. 
 

Low intensity “speckles” may appear 
over most of screen. This is mainly due 
to sediment in the water or noise. These 
can be suppressed by adjusting 
CLUTTER on the menu. When the 
automatic mode is on, clutter is 
automatically rejected. To suppress low 
level noise in manual sounder operation, 
do the following: 
1.  Press the [MENU/ESC] key to open 

the main menu. 

2. Use ▲ or ▼ to choose CLUTTER 

from page 1 of the menu. 

3. Press ► to show the options 

window. 

4. Use ▲ or ▼ to choose the degree of 

suppression desired; 1, 2, 3 ,4, 5 or 
6. The higher the number the greater 
the suppression. 

5.  Press the [MENU/ESC] key to close 

the menu. 

 
To turn off low-level noise 
suppression

, choose Off at step 4 and 

then press the [MENU/ESC] key.