Using Magnetic Variation; Offsetting The Heading Data; Magnetic Variation Options Window - Furuno NAVpilot-500 Installation Manual

3.3.2 Using magnetic variation

When connecting with a magnetic heading sensor (PG-500 etc.), the magnetic variation is
necessary to use true heading data. The plotter outputs magnetic variations for all areas of
the earth. You may choose to use the preprogrammed variations or enter variations
manually, in case of no plotter or you prefer to enter them manually.
1. Rotate the course control knob to select "MAGNETIC VARIATION".
2. Press the course control knob to show the magnetic variation options window.
3. Rotate the course control knob to select AUTO or MANUAL.
AUTO requires own ship's position data from the navigator connected.
4. Press the course control knob.
When selecting MANUAL, rotate the course control knob to set the variation value,
consulting a nautical chart (Setting range: W99.9° to E99.9°).
5. Press the course control knob.

3.3.3 Offsetting the heading data

Offset the heading data received from the heading sensor if the heading data shown on the
control unit differs from the indication of the ship's compass. This offset is applied to the
heading sensor data. When the control unit shows 125° though the ship's compass reading
is 120°, for example, enter "5°".
1. Rotate the course control knob to select "COMPASS OFFSET".
2. Press the course control knob and the current value is circumscribed with a double
rectangle.
3. Rotate the course control knob to set the offset value (Setting range: W180.0° to
E180.0°).
4. Press the course control knob to finish.
AUTO
MANUAL

Magnetic variation options window

3. ADJUSTMENTS
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