NorthStar Navigation NorthStar 8000i - Manual (Page 129)

Northstar 8000i Operation Manual 129
Alternatively:
1. Select
Orientation (if you can't see the Orientation button,
select Return).
2. Select
Set Offset. The 8000i asks you to select the new position for
the PPI center.
3. Select the new position and the PPI center immediately moves to the
new location. If you want to move it again, just repeat this step.
4. If you want to return the PPI center to Look Ahead, just select Vessel
or press the Vessel key.
5. When you are finished, select Return.
21.10 Set the PPI position to Look Ahead or Center
You can set the position of the PPI (Plan Position Indicator) center to:
•
Center. The PPI center remains in the central area of your Radar screen so that
all other objects move relative to your vessel.
•
Look Ahead. The PPI center is positioned to give you the best view ahead. This
is the default.
If neither of these are suitable and you want to locate the PPI center somewhere
else, see "Customize the position of the PPI center".
To set the PPI center:
1. Display the Radar screen and control panel. If you can't see the
Orientation button, select Return.
2. Select
Orientation.
3. The
Position button shows the current setting. Select the button if
you want to toggle to the other setting. The PPI center is immediately
moved to the new location on your Radar screen.
4. When you are finished, select Return.
21.11 Select True or Relative Motion mode
If there's no heading data, only Relative Motion mode is available.
The motion mode is shown in the status bar at the top of your Radar screen. There
are two choices:
ƒ Relative (RM). Your vessel remains in a fixed location on the Radar
screen and all other objects move relative to your position. (You
can choose the position of the fixed location, see "Offset the
position of the PPI center"). RM is the default.
ƒ True (TM). Your vessel, and moving targets, move across the Radar
screen as you travel. All stationary objects remain in a fixed
position.
You can change the motion mode only when the radar is transmitting.
To select the motion mode:
1. Display the Radar screen and control panel. If you can't see the
Orientation button, select Return.