7. Fish Finder
7-11
7.6 How to Reduce Interference
Interference from other fish finders and electrical equipment appears on the screen as
shown in the illustration. When these types of interference appear on the screen, use
the interference rejector to reduce the interference. Three or four levels are available
according to type of network sounder. Turn off the interference rejector when there is
no interference, so that you do not erase weak echoes.
1. Press the MENU key to open the menu.
2. Open the [Fish Finder-DFF/FCV] (or [ETR]) menu.
3. Use the RotoKey to select [Interference Rejection].
4. Use the RotoKey to select [Off], [Low], [Medium], [High] or [Auto]. [Auto], avail-
able with the DFF series and FCV-1150, automatically selects proper interference
setting.
5. Press the MENU key to close the menu.
Interference from
other sounder
Interference from
electrical equipment
DFF/FCV
ETR-6/10N, ETR-30N menu
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