PPI center: Center PPI center: Look Ahead PPI Center: Offset
You return the antenna center to PPI center by using the offset option in the View menu.
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Note: The bearing scale is according to the Consistent Common Reference Point (CCRP),
while the offset sets the radar antenna position on the PPI. The maximum off-centering
allowed is 75% of the radius at the current range. This may result in the CCRP being
outside of the bearing scale. In such cases the measurements are still taken by the CCRP
and the bearing scale is compressed accordingly.
Center
The Center option resets the antenna position to the center of the PPI.
Look ahead
The Look ahead option is used to maximize the view ahead of the vessel. When selected the
PPI center is placed at 70% of the radius of the PPI, 180° opposite the top of the display.
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Note: Look ahead is only available for Heading Up radar orientation.
Offset to cursor position
This option allows you to use the cursor for selecting the antenna center. When the option is
selected the PPI center is immediately moved to the cursor position.
EBL/VRM markers
The electronic bearing line (EBL) and variable range marker (VRM) allows quick
measurements of range and bearing to vessels and landmasses within radar range. Two
different EBL/VRMs can be placed on the radar image.
The EBL/VRMs are by default positioned from the center of the vessel. It is, however, possible
to offset the reference point to any selected position on the radar image.
When positioned, you can turn the EBL/VRM on/off by selecting the relevant markers on the
data bar, or by deselecting the marker from the menu.
Defining an EBL/VRM marker
1. Ensure that the cursor is not active
2. Activate the menu, select EBL/VRM, then select EBL/VRM 1 or EBL/VRM 2
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The EBL/VRM is now positioned on the radar image
3. Select the adjustment option from the menu if you need to reposition the marker, then
adjust the marker by dragging it into position on the radar image
4. Select the save option to save your settings
Placing EBL/VRM markers by using the cursor
1. Position the cursor on the radar image
2. Activate the menu
3. Select one of the EBL/VRM markers
- The EBL line and the VRM circle are positioned according to the cursor position.
Offsetting an EBL/VRM marker
1. Ensure that the cursor is not active
2. Activate the menu, select EBL/VRM, then select the marker you wish to offset
3. Select the set offset option
4. Position the cursor on the radar panel to set the offset position
5. Select the save option to save your settings.
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Radar | NSO evo3 Operator Manual
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