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Furuno gd-1700c Manuel D’Utilisation

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4. VIDEO SOUNDER OPERATION 
 
 
 
4-12
4.6 Reducing 
Interference 
Interference from other acoustic equipment operating nearby or other electronic 
equipment on your boat may show itself on the display as shown below. 
Interference from            Electrical inteference
other sounder
 
Types of interference 
To reduce interference, do the following: 
 
1.  Press the [MENU] key. 
2.  Press the SOUNDER MENU soft key. 
3.  Select NOISE LIMITER and press the EDIT soft key to show the noise limiter 
window. 
NOISE LIMITER
▲
¤
OFF
¡
LOW
¡
MEDIUM
¡
HIGH
▼
 
Noise limiter window 
4.  Use the cursor pad
 to select degree of suppression desired (LOW, MEDIUM, 
HIGH) or turn the noise limiter off. 
5.  Press the RETURN soft key followed by the [MENU] key to close the menu. 
 
Turn the noise limiter function off when no interference exists, otherwise weak 
echoes may be missed.