Garmin GMR 404 User's Manual | Page 10
4
GMR 404/406 Owner’s Manual
bAsIc oPerAtIon > rAdAr PAge
Using the Radar Adjustment Menu
Use the Radar adjustment menu to access the settings and features
most commonly used on the Radar Page including: Gain, Sea Clutter,
Rain Clutter, FTC, Zoom, Target Expansion, Trails, Guard Zone,
VRM/EBL, MARPA, and Hide/Show Navigation Features.
To select an adjustment option from the Radar Page
1. Press
ADJ/MENUtoopentheRadaradjustmentmenu.
2. Press up or down on the
ROCKERtohighlighttheoptionyou
want to change, and then press
ENTER.
To change a Radar adjustment menu setting:
1. Selectanadjustmentmenuoptionusingthemethoddescribed
previously.
2. Press up or down on the
ROCKERtochangethesetting,
range,orpercentage.
3. Press
ENTERtoacceptthechange,orpressQUITtoclose
theRadaradjustmentmenu.
Gain
Gain controls the sensitivity of the Radar receiver. Auto (default)
is the recommended setting. It automatically adjusts the gain to
provide optimal performance. You can also set gain manually. To see
more detail, increase the receiver sensitivity by selecting a higher
gain. If there is too much detail, or the screen is cluttered, lower the
sensitivity (lower the gain) to increase the clarity of the screen.
Sea Clutter
Sea Clutter controls unwanted screen clutter caused by choppy sea
conditions. The slider has three preset positions: Calm, Moderate,
and Rough.
Rain Clutter
Rain Clutter controls unwanted screen clutter caused by rain at close
ranges (use the slider to select 1-100%).
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