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9.18 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.
• Press RADAR so that the navigator displays radar only.
• 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.
• Zoom in as necessary to place the reference target near the outer edge of the screen.
• Press Page 1, Page 2
• Check that the chart rotation (Rotate button) is set to Hdg Up.
• Press Page 2, Page 3, Page 4 and Install... .
• 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).
9.19 Restore all the factory settings
If you need to restore ALL of the radar settings (except trigger delay, heading calibration and
whether or not a heading sensor is installed) to their factory settings, do the following:
• From the main radar page, press Page 1.
• Press Restore... .
• Press Restore factory settings to return the unit to its state when it was shipped with the
exception of the following:
• trigger delay
• heading calibration
• whether or not a heading sensor is installed
• parking calibration
This function is used before performing manual tuning (see Appendix B) or at any time it's
necessary to restore the unit to a known state.
9.20 Restore the factory appearance settings
¾ Appearance settings and manual settings can be restored to values
that normally produce a useful picture as follows:
• From the main radar page, press Page 1.
• Press Restore... .
• Press any or all of Restore Auto, Restore Harbor, Restore Range Rider, and Restore
Manual to return to the factory appearance settings.
This completes the installation calibration.
Note that the heading correction may need to be adjusted slightly after the gain is optimized to
provide a better picture.