Furuno NAVpilot-611 Installation Manual page 41

3.3.2 Using magnetic variation
When connecting with a magnetic heading sensor (PG-500 etc.), magnetic variation
information is necessary to display true heading data. In almost all cases, a GPS will be
connected to the Navpilot and the GPS will send this variation information to the Navpilot
automatically. Therefore, please select "AUTO". In special cases where a manual variation
is required, you may input these values manually. Note that this selection only has an effect
if you select "TRUE" heading indication for the Navpilot display.
Note: If TRUE heading display is selected in the DISPLAY MODE menu, the Navpilot will
display true heading information even though the Navpilot may be connected to a
magnetic heading sensor. If TRUE is set, the Navpilot will force the PG-500 to output
true heading data in NMEA0183 and AD-10 format to any equipment connected
directly. This is very valuable when connecting a Furuno radar FR-21X5 or FR-21X7
series to a Navpilot system because these radars cannot be set for a magnetic
heading input and the Waypoint Lolli-pop" will only align properly when running a true
heading vessel.
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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