NorthStar Navigation 10 kW - Manual (Page 40)

9. If possible, check targets in all quadrants to ensure accurate adjustment.
Set the heading calibration (heading sensor not installed)
The heading calibration rotates the radar image on the screen so that a target dead ahead
corresponds to a bearing of 0° on the screen.
1. Press RADAR so that the navigator displays radar only.
2. Find a target at least 1 nautical mile distant. Choose an obvious land target or solid object
with a fixed reference such as a jetty, light house or pier. Steer the vessel until the reference
target is directly head up then maintain this heading.
3. Zoom in as necessary to place the reference target near the outer edge of the screen.
4. Press Page 1, Page 2
5. Check that the chart rotation (Rotate button) is set to Hdg Up.
6. Press Page 2, Page 3, Page 4 and Install... .
7. Press Heading Calibrate then press the cursor pad left and right to rotate the radar
image so that the reference target is at 0° (vertical from the centre of the radar sweep).
4.4.1.6 Adjust the appearance settings
The Mode, Rain Clutter, Sea Clutter and Gain are usually set to automatic mode to obtain an excellent
image under most conditions and, by default, allow you to see any approaching weather rain cells for
maximum safety. However, these settings may need minor adjustments depending on the location of
the radar.
To access these controls, press Page 2 from the main radar screen.
The Mode key determines how the gain and clutter keys work. It has the following settings:
ƒ
Auto 1 and Auto 2 are for normal, open-water conditions. The two automatic modes
can be optimized for two different conditions.
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Harbor automatically optimizes the radar settings for use in a harbor. This is the default
setting.
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Range Rider is a Northstar exclusive feature recommended for use when manual
settings are required. You can make changes to the clutter and gain settings for different
ranges, and the Range Rider will store these settings for each range. Then, when you select
a particular range again, the settings are already optimized.
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Manual is a fully manual function in which you will usually need to adjust the settings
manually each time you change the range.
Gain and Sea Clutter appearance settings are available in Auto1, Auto 2 and Harbor modes.
These can be accessed by pressing the Gain or Sea Clutter buttons while in Auto1, Auto 2 or Harbor
mode with Gain or Sea Clutter set to Auto.
The default appearance setting is 25 for both Gain and Sea Clutter for all ranges.
The appearance settings can be adjusted between 0 and 50. This represents a +/- 25 step offset away
from the nominal Auto mode setting. The value set will be applied only to the current range.
Northstar 10 kW Radar Installation Manual 40