Furuno FR-10, Operator'S Manual

Page: 76 / 171

2. OPERATION
2-40
tensity. The brilliance of sea clutter is reduced to easily identify true targets from the
sea clutter.
Note 1: Do not use the echo average function under heavy pitching and rolling. You
can lose a target.
Note 2: This feature requires a heading signal and position data. When either signal
becomes lost, echo average is deactivated.
To correctly use the echo average function, first reduce the sea clutter:
1. Press the MENU key to open the menu.
2. Press  or  to select [Echo], then press the ENTER key.
3. Press

or

to select [Echo Average], then press the ENTER key.
4. Press  or  to select an echo averaging option, then press the ENTER key.
[ Off ]: Deactivate the echo average.
[ 1 ]: Identify true targets from the sea clutter and reduce the brilliance of unstable
echoes.
[
2 ]: Identify true targets from the sea clutter that you cannot reduce the brilliance
with setting 1.
[
3 ]: Identify true targets from the sea clutter that you cannot reduce the brilliance
with setting 1 or 2.
5. Press the MENU key to close the menu. The selected echo average ("EAV 1",
"EAV 2" or "EAV 3") appears at the lower-left corner of the display.
2.31 Display-Curve
You can change the characteristics curve to reduce unwanted weak echoes (sea re-
flections, etc.). Select [1], [2] or [3] depending on conditions when unwanted weak
echoes hide wanted targets.
1. Press the MENU key to open the menu.
2. Press

or

to select [Echo], then press the ENTER key.