Furuno 1834C-BB User Manual

4. VIDEO SOUNDER OPERATION 

4. Adjust the Trackball upward or downward

 

to select clutter rejection level desired; 0 

(OFF) through 16. The higher the number the higher the degree of suppression. Note 
that the clutter suppressor may erase weak echoes. Therefore, turn off the clutter when 
its use is not required. 

5.  Press the E: RETURN soft key followed by the MENU key to close the menu. 

 

 Unlike the signal level feature, clutter does not reduce display colors. However, if you 

do not wish to change the relation between weak and strong echoes, use signal level 
instead. 
 
 

Sediments in the water or reflections from plankton may be painted on the display in green 
or light blue. These weak echoes may be erased as below. 

Weak
echoes

1. Press the MENU key. 
2.  Press the A: SOUNDER MENU soft key. 
3.  Select SIGNAL LEVEL, and press the A: EDIT soft key to show the signal level window. 

SIGNAL LEVEL

▲

 

OFF

SL1
SL2
SL3
SL4
SL5
SL6

▼

SIGNAL LEVEL

▲

 

OFF

SL1
SL2
SL3

▼

 16-color display

  8-color display

4. Use the Trackball to select level of erasure or OFF as appropriate. The higher the 

number the stronger the echo that will be erased.   

5.  Press the E: RETURN soft key followed by the MENU key to close the menu. 
 
Note:

 Unlike “clutter,” signal level reduces display colors. Therefore, if you do not wish to 

reduce colors, use clutter instead.