Raymarine e7 User Reference page 108

4. Select Aerial so that On is highlighted.
The opacity bar is displayed showing the current opacity
percentage.
5. Use the Rotary Control to adjust the opacity to the required
percentage.
Specifying the aerial overlay area
From the chart application.
1. Select Menu.
2. Select Set-up.
3. Select Cartography.
4. Select Aerial Overlay.
A list of overlay options is displayed.
5. Select either On Land, On Land and Shallows, or On Land and
Sea.
A tick is displayed next to the option and if aerial overlay is
switched on the screen is redrawn showing the new overlay
selection.
Radar overlay
You can combine the chart with the radar and MARPA functions
to provide target tracking or to help you distinguish between fixed
objects and other marine traffic.
You can enhance the use of your chart by combining it with the
following radar features:
• MARPA.
• Radar overlay (for distinguishing between fixed and moving
objects).
Using the radar to view MARPA targets on the chart
The Mini Automatic Radar Plotting Aid (MARPA) function is used for
target tracking and risk analysis. When the radar overlay is on, all
MARPA targets are displayed in the chart window and associated
MARPA functions can be accessed via the chart.
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Using radar overlay to distinguish between fixed and moving
objects
You can overlay radar image data over your chart image allowing
better distinction between fixed objects and other marine traffic. For
best results, switch on Radar-Chart synchronization to ensure radar
range and chart scale are synchronized.
Enabling radar overlay
With the radar turned on and transmitting, with the chart application
in 2D view:
1. Select Menu.
2. Select Presentation.
3. Select Layers.
4. Select Radar so that On is highlighted.
The opacity bar is displayed showing the current opacity
percentage.
5. Use the Rotary Control to adjust the opacity to the required
percentage.
Accessing radar controls on the chart
From the chart application:
1. Select Menu.
2. Select Radar Options.
Note: Any changes made to the radar options from the chart
application will be applied to the radar application.
Chart scale and radar range synchronization
You can synchronize the radar range in all radar windows with the
chart scale.
When synchronization is switched on:
• The radar range in all radar windows changes to match the chart
scale.
e7 / e7D — User reference