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1.15 Suppressing Interference
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. You may suppress these
types of interference with the noise limiter.
Interference from
other sounder
Electrical interference
Interference
1. Rotate the [FUNCTION] key to select NL.
The NOISE LIMITER menu appears.
1. Shift frequencies to
reject interference.
2. Use LF/HF·NOISE LIM
in case interference
hasn't been rejected.
[-/+]: Change setting
[EXIT (knob)]: Exit
NOISE LIMITER
The inverted solid
triangle shifts with
operation of [-] or
[+] key.
-10
+10
0
-10
+10
0
HF·FREQ ADJ : +0.0%
HF·NOISE LIM: OFF
LF·FREQ ADJ : +0.0%
LF·NOISE LIM : OFF
NL menu
• For the dual display → Go to step 2.
• For other modes → Go to step 3.
Note: When only the picture from external equipment is displayed, an error message appears
on the menu.