1. OPERATION
9
1.11
How to Reduce
Interference
Interference from other acoustic equipment
operating nearby or other electronic equip-
ment on your boat may show itself on the dis-
play as shown in the figure below. Follow the
procedure below to reduce interference.
Interference
1. Open the menu, select [Sounder] and
press the
ENTER
key.
2. Select [Interference] and press the
EN-
TER
key.
[Interference] setting window
3. Select the degree of interference reduc-
tion desired and press the
ENTER
key.
[Auto]: Interference is suppressed auto-
matically.
[High], [Medium], [Low]: [High] provides
the greatest degree of interference reduc-
tion and [Low] is the smallest.
[Off]: Turn off the interference rejector.
Note:
Turn off the interference rejector
when no interference exists, so as not to
miss weak echoes from small targets.
4. Press the
MENU/ESC
key twice to close
the window.
1.12
How to Reduce
Low Level Noise
Low intensity "speckles," caused by sedi-
ments in the water or noise, may appear over
most of screen. These speckles can be sup-
pressed by adjusting the [Clutter].
Clutter appearance
Note:
[Clutter] cannot be adjusted when
[Fishing] or [Cruising] is selected (on the [Auto
Gain] setting window).
1. Open the menu, select [Sounder] and
press the
ENTER
key.
2. Select [Clutter] and press the
ENTER
key.
[Clutter] setting window
3. Select the degree of clutter reduction de-
sired and press the
ENTER
key. The set-
ting range is 0% to 100% in intervals of
ten. The larger the setting value, the
greater the degree of reduction.
4. Press the
MENU/ESC
key twice to close
the window.
Interference from
other sounder
Electrical interference
Summary of Contents for FCV-627
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