ComNav 2001 - Page 35

ComNav 2001 Autopilot System
P/N 29010017 V1.0 - 35-
NAVIGATION EQUIPMENT INTERFACING
1. Turn on your navigation device (Plotter,
Loran or G.P.S.). Wait for it to find its
location and for all of its alarms to turn
off.
2. Program a waypoint into the navigation
device. Start it navigating towards the
waypoint.
3. To use your navigation device with your
Autopilot, turn the Autopilot Master
Select Switch to Nav. Your navigation
device will be wired to one of two Nav
ports. To select the correct Nav port,
press the Turn Key. The Autopilot will
show which port is selected by displaying
P1 or P2. To change the port selection,
press the red key while the display is
showing P1 or P2.
If you are not sure to which port your
navigation device is connected, look in
the distribution box to see where the
wires coming from the navigation device
are attached. Terminals 18 and 19 are
Nav port 1. Terminals 20 & 21 are Nav
port 2.
4. One of two things should happen:
a) The course shown on the display will
begin to change to agree with the heading
to the waypoint given by the navigation
device. This shows that your wiring
connections between the autopilot and
the navigation device are correct.
b) The course shown on the display
changes only a few degrees or not at all,
but the autopilot does not sound any
alarms. This indicates that your
navigation device is probably sending
information in NMEA 0180 information
to your autopilot. It indicates that your
wiring connections are correct.
5. If the autopilot display shows "ndEr",
the autopilot is not receiving any
"useable" navigation data from the
navigation device. Check the following
items:
a) Check that the SIGNAL and
RETURN wires are connected to the
correct terminals in the distribution box.
NOTE: If the SIGNAL wire is in the
RETURN TERMINAL and the
RETURN wire is in the SIGNAL
TERMINAL it will cause no damage to
the autopilot but the data will not be read
properly. To make sure that they are
correct, you can exchange the positions
of these wires.
b) Check that all connections between the
autopilot and the navigation device are
correct.
c) Check that the autopilot is set to the
NAV PORT that is wired to the
navigation device. See the section titled
"BASIC OPERATION" for further
details.
d) Use the owner's manual for your
navigation device to make sure that it is
programmed to send information in a
correct format for your pilot. This will be
an NMEA language.
6. If the autopilot displays"Fd.Er", the
autopilot is receiving position
information which may not be accurate.
Check for alarm indicators on your
navigation device.
Contact your dealer or ComNav Marine for
assistance if the problem persists. Please have
available your pilot serial number and the make
and model of your Nav device.