How To Reduce The Rain Clutter - Furuno 1835 Operator's Manual

1. DESCRIPTION OF OPERATION
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How to Reduce the Rain Clutter

The reflections from the rain or snow appear on the screen. These reflections have the
name "rain clutter". When the rain clutter is strong, targets in the rain clutter are hidden
in the clutter. Reflections from the rain clutter are easily identified from true targets by
their wool-like appearance.
The A/C RAIN control, like the A/C SEA control, adjusts the receiver sensitivity, but in
longer range. If the setting is high, the rain clutter is more reduced. The rain control
breaks the continuous display of rain or snow reflections into a random pattern. When
the rain clutter hides the targets, adjust the rain control (automatic or manual) to re-
duce the clutter.
1. Press the MENU key to open the menu.
2. Use the Cursorpad (
3. Use the Cursorpad (
4. Use the Cursorpad (
key. The window for Gain/Sea/Rain indicator appears (refer to the illustration of
step 4 at section 1.9). If you selected [Auto], go to step 5. For [Manual], go to Man-
ual mode below.
5. Press the CANCEL/HL OFF key to close the window.
6. Use the Cursorpad (
7. Use the Cursorpad (
the ENTER key. The window for Gain/Sea/Rain indicator appears for confirma-
tion.
[Calm]: For light rain
[Moderate]: When you can not reduce the rain clutter with [Calm] mode
[Rough]: For heavy rain
8. Press the CANCEL/HL OFF key to close the window.
9. Press the MENU key to close the menu.
Note: When you want to adjust the rain clutter finely in [Auto] mode, rotate the A/C
RAIN knob. The confirmation message appears. If you select [Yes], the mode chang-
es to [Manual] mode. Rotate the A/C RAIN knob to adjust the rain clutter.
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) to select [Echo] and press the ENTER key.
or
) to select [Rain Mode] and press the ENTER key.
or
) to select [Auto] or [Manual] then press the ENTER
or
) to select [Auto Rain] and press the ENTER key.
or
Auto Rain options
or ) to select [Calm], [Moderate] or [Rough] then press
Are you sure to change to manual mode?
Confirmation message