Garmin Volvo Penta Glass Cockpit B7 Owner's Manual page 61

Measuring the Range and Bearing to a Target Object
Before you can adjust the VRM and the EBL, you must
show them on the Radar screen
the VRM and the EBL, page
1 From a Radar screen, select the target location.
2 Select Measure.
The range and the bearing to the target location
appear in the upper-left corner of the screen.
Echo Trails
The echo trails feature enables you to track the
movement of vessels on the radar display. As a vessel
moves, you can see a faint trail
You can change the length of time the trail is displayed.
NOTE: Depending upon the radar in use, the settings
configured for use in one radar mode may or may not be
applied to other radar modes or to the radar overlay.
NOTE: This feature is not available on xHD open array or
HD/HD+ radome models.
Turning on Echo Trails
From a radar screen, select Menu > Radar Options >
Echo Trails > Display.
Adjusting the Length of the Echo Trails
1 From a radar screen or the radar overlay, select Menu
> Radar Options > Echo Trails > Time.
2 Select the length of the trail.
Clearing the Echo Trails
You can remove the echo trails from the radar screen to
reduce the clutter on the screen.
From a radar screen, select Menu > Radar Options >
Echo Trails > Clear Trails.
Radar Settings
NOTE: Not all options and settings are available on all
radar and chartplotter models.
NOTE: You can optimize the radar display for each radar
mode.
Radar Gain
Adjusting Gain on the Radar Screen Automatically
The automatic gain setting for each radar mode is
optimized for that mode, and may differ from the
automatic gain setting used for another mode.
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.
Radar
(Showing and Adjusting
48).
of the vessel's wake.
NOTE: Not all options are available on all radar models.
1 From a radar screen or the radar overlay, select Menu
> Gain.
2 Select an option:
• To adjust the gain automatically for changing
conditions, select Auto Low or Auto High.
• To adjust the gain automatically to show birds over
the surface of the water, select Auto Bird.
NOTE: This option is not available on xHD open
array or HD/HD+ radome models.
Adjusting Gain on the Radar Screen Manually
For optimal radar performance, 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.
1 From a Radar screen or the Radar overlay, select
Menu > Gain.
2 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.
3 Select Down to lower the gain until the speckles
disappear.
4 If boats, land, or other targets are within range, select
Down to lower the gain until the targets begin to blink.
5 Select Up to raise the gain until the boats, land, or
other targets appear steadily lit on the Radar screen.
6 Minimize the appearance of nearby large objects, if
necessary.
7 Minimize the appearance of side-lobe echoes, if
necessary.
Minimizing Nearby Large-Object Interference
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.
1 From a Radar screen or the Radar overlay, select
Menu > Gain.
2 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.
Minimizing Side-Lobe Interference on the Radar
Screen
Side-lobe interference may appear to streak outward from
a target in a semi-circular pattern. Side-lobe effects can
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