ComNav P4 - Analog Compass; NAV1 Port

ComNav P4 Installation and Operation Getting Started
Document PN 29010100 V1r0 - 108 -
Analog Compass
An analog compass may be in the type of Magnetic, (ComNav) Fluxgate, Fluxgate with
fixed reference, or float reference. If you don’t have an analog compass, leave the Analog
Compass selection to “None” and move to the next line.
If you are not already in the Compass Configuration menu as seen in Figure 52, start by
selecting Compass Setup with the ENTER button from the Dockside Setup menu (see the
Dockside Setup menu as shown in Figure 50).
 Highlight “Analog Compass”, and turn the knob to set the
type according to what compass you have.
 Press ENTER to verify that the selected compass type is properly
connected and can be read.
 A “Please Wait” screen will be displayed for a few seconds.
 The results of the search will now be displayed, along with an
option to “Compensate Now?” or “Set North Now?” The type of
Analog compass that is shown, and the “Compensate” or “Set”
option, will depend on what you selected for “Analog Compass.”
 Skip the compass/HRS compensation process (press the
PORT button), since this can not be done while still tied up at
the dock.
 If the autopilot could not find a compass that matches with
the type you have selected in step 2, it will display a “not
found” error message at this point.
NOTE: Some compass types can masquerade as others, so be sure you have selected the
correct type at step 2.
Check your installation to be sure that the compass is wired correctly. Fix any problems, and
re-start at step 2. Return to the Compass Configuration menu.
Contact your ComNav Dealer for help, if necessary.
NAV 1 Port
NAV Ports are always available as a compass source for a NMEA 0183 compass and
need not be installed. However, if you have a NMEA 0183 Tri-Axis Rate Gyro Compass
connected to a NAV1 port, you can calibrate the compass when your boat is on the water.
See Compass Setup – on the water for setting up Tri-Axis Rate Gyro Compass.