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1. OPERATION
1-12
2) Press the CANCEL/HL OFF key to close the window.
1.11 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 (au-
tomatic or manual) to reduce the clutter.
Auto mode
1. Press the MENU key to open the menu.
2. Use S or T to select [Echo] and press the ENTER key.
3. Use S or T to select [Rain Mode] and press the ENTER key.
4. Use S or T to select [Auto] or [Manual] then press the ENTER 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 "Manual
mode" below.
5. Press the CANCEL/HL OFF key to close the window.
6. Use S or T to select [Auto Rain] and press the ENTER key.
7. Use S or T to select [Calm], [Moderate] or [Rough] then press the ENTER key.
The window for Gain/Sea/Rain indicator appears for confirmation.
[Calm]: For light rain
[Moderate]: When you cannot 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.
A/C SEA control adjusted;
sea clutter reduced
Sea clutter at
screen center
Calm
Moderate
Rough