1. OPERATION
1-24
1.11.3
How to use smoothing for external echo sounders where "Ex-
ternal Fish Finder Window" is set to "On" at installation
1. Place the cursor inside the external fish finder screen, then right-click. The [Exter-
nal Fish Finder] menu appears.
2. The [Sounder] menu is already selected.
3. Click the [Smoothing] setting. The drop-down options box appears at the far right-
side of the window.
4. Click the drop-down box, then select the appropriate smoothing level. A high value
increases the amount of smoothing applied to the picture.
5. Click [Apply] to save the current changes and change or adjust other settings.
Click [OK] to save the current changes and close the menu window.
Click [Cancel] to abort all changes and close the menu window.
1.12
How to Reject Clutter
Low intensity "speckles" are referred to as clutter, and can appear over most of the
screen. Clutter is often caused by sediment in the water or noise. These unwanted
echoes can be rejected.
1.12.1
How to reject clutter for the FCV-38
1. Click the [Sounder] icon (
) from the InstantAccess bar™ to show the [Sounder]
menu.
2. Click the [Clutter] icon (
). [CLUTTER] appears in the miscellaneous section of
the header and is highlighted in a green color.
3. Scroll to adjust the level of clutter rejection. A high value setting reduces more clut-
ter, but can also remove weak echoes (small targets).
“Clutter” appears as
“speckles” on the display.
[CLUTTER] indication
RANGE
40
SB
RANGE
40
CLUTTER
100
