Справочник Пользователя для Garmin International Inc 02120D

For optimal radar performance that accounts for actual

conditions, you can manually adjust the gain.
NOTE: Depending upon the radar in use, the gain setting

configured for use in one radar mode may or may not be

applied to other Radar modes or to the Radar overlay.

From a Radar screen or the Radar overlay, select Menu

> Gain.

Select Up to raise the gain, until light speckles appear

across the Radar screen.
Data on the Radar screen is refreshed every few

seconds. As a result, the effects of manually adjusting the

gain may not appear instantly. Adjust the gain slowly.

Select Down to lower the gain until the speckles

disappear.

If boats, land, or other targets are within range, select

Down to lower the gain until the targets begin to blink.

Select Up to raise the gain until the boats, land, or other

targets appear steadily lit on the Radar screen.

Minimize the appearance of nearby large objects, if

necessary.

Minimize the appearance of side-lobe echoes, if

necessary.

Nearby targets of significant size, such as jetty walls, can

cause a very bright image of the target to appear on the

Radar screen. This image can obscure smaller targets

located near it.
NOTE: Depending upon the radar in use, the gain setting

configured for use in one radar mode may or may not be

applied to other radar modes or to the Radar overlay.

From a Radar screen or the Radar overlay, select Menu

> Gain.

Select Down to lower the gain until the smaller targets

are clearly visible on the Radar screen.
Reducing the gain to eliminate nearby large-object

interference may cause smaller or distant targets to blink

or disappear from the Radar screen.

Side-lobe interference may appear to streak outward from a

target in a semi-circular pattern. Side-lobe effects can be

avoided by reducing the gain or reducing the radar range.
NOTE: Depending upon the radar in use, the gain setting

configured for use in one radar mode may or may not be

applied to other radar modes or to the Radar overlay.

From a Radar screen or the Radar overlay, select Menu

> Gain.

Select Down to lower the gain until the semi-circular,

streaked pattern disappears from the Radar screen.
Reducing the gain to eliminate side-lobe interference may

cause smaller or distant targets to blink or disappear from

the Radar screen.

You can adjust the appearance of clutter caused by choppy

sea conditions. The sea clutter setting affects the appearance

of nearby clutter and targets more than it affects the

appearance of distant clutter and targets. A higher sea clutter

setting reduces the appearance of clutter caused by nearby

waves, but it can also reduce or eliminate the appearance of

nearby targets.

NOTE: Depending upon the radar in use, the sea clutter

setting configured for use in one radar mode may or may not

be applied to other radar modes or to the Radar overlay.

From a Radar screen or the Radar overlay, select Menu

> Noise Rejection > Sea Clutter > Presets.

Select a setting that reflects the present sea conditions.

Select Menu > Noise Rejection > Sea Clutter.

Select Up or Down to adjust the appearance of sea

clutter until other targets are clearly visible on the Radar

screen.
Clutter caused by sea conditions may still be visible.

You can adjust the appearance of clutter caused by rain.

Reducing the radar range also can minimize rain clutter

(page 17).
The rain clutter setting effects the appearance of nearby rain

clutter and targets more than it effects the appearance of

distant rain clutter and targets. A higher rain clutter setting

reduces the appearance of clutter caused by nearby rain, but

it can also reduce or eliminate the appearance of nearby

targets.
NOTE: Depending upon the radar in use, the rain clutter

settings configured for use in one radar mode may or may

not be applied to other radar modes or to the Radar overlay.

From a Radar screen or the Radar overlay, select Menu

> Noise Rejection > Rain Clutter.

Select Up or Down to decrease or increase the

appearance of nearby rain clutter until other targets are

clearly visible on the Radar screen.
Clutter caused by rain may still be visible.

You can reduce the appearance of clutter caused by

interference from another nearby radar source. On is the

default value for the crosstalk setting.
NOTE: Depending upon the radar in use, the crosstalk

setting configured for use in one radar mode may or may not

be applied to other radar modes or to the Radar overlay.

From a Radar screen or the Radar overlay, select Menu

> Noise Rejection > Cross Talk Reject > On.

From any Radar screen or the Radar overlay, select Menu >

Set Up Radar.
Orientation: Sets the perspective of the radar display. The

orientation setting applies to every radar mode. This

setting does not apply to the Radar overlay.

Appearance: Sets the color scheme, look-ahead speed, and

navigation appearance.

Front of Boat: Compensates for the physical location of the

radar scanner on a boat, if the radar scanner does not

align with the bow-stern axis.

From a Radar screen, select Menu > Set Up Radar >

Appearance.
NOTE: These settings do not apply to the Radar overlay.
Color Scheme: Sets the color scheme.
Look-Ahead Speed: Shifts your present location toward the

bottom of the screen automatically as your speed

increases. Enter your top speed for the best results.

Radar

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