Reducing Interference - Furuno GP-3500F Operator's Manual

11.7

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.
To reduce interference, do the following:
1. Press the [MENU] key to show the main menu.
2. Press the [9] key to show the ECHO SOUNDER SETUP menu.
3. Press the [2] key to show the NOISE LIMITER window.
4. Rotate the [ENTER] knob to select degree of suppression (NL1, NL2, NL3)
or turn the noise limiter off.
NL3 provides the greatest degree of suppression.
5. Press the [ENTER] knob.
6. Press the [MENU] key several times to close the menu.
Interference from
other sounder
Types of interference
NOISE LIMITER
1. OFF
2. NL1
3. NL2
4. NL3
Noise limiter window
11. VIDEO SOUNDER OPERATION
Electrical interference
11-19