-16-
PRO
PILOT
725 INSTALLATION & SERVICING MANUAL
Installing
Optional
Equipment
INSTALLING OPTIONAL
EQUIPMENT
Cetrek
Your
Cetrek
equipment
will
have
Installation
and
Operation
Equipment
Instructions
with
each
individual
unit
as
is
appropriate
for
the
equipment.
The
Installation
Schematic
in
this
manual
covers
the
wiring
connections
of
optional
equipment.
Non
Cetrek
equipment
will
usually
interface
with
your
Autopilot
if
you
follow
these
instructions.
NAVIGATORS
The
autopilot
can
be
controlled
with
data
received
from
a
radio
navigator
(Sat
Nav,
Loran,
Decca
or
GPS)
which
has
a
compatible output format.
The marine industry has generally adopted the data output
formats as specified by the National Marine Electronics
Association of North America (NMEA). Your autopilot will accept
any of the three data formats in common use for autopilot
control:-
NMEA 0180
NMEA 0182
NMEA 0183
The data format available from your navigator will affect the
method in which your autopilot can be operated with your
navigator. In order for the navigator to output the required
information, it first has to be programmed with your required
destination or waypoints. The basic information used for
autopilot control is:-
•
Cross track error. This is expressed in units of one
hundredth of a nautical mile (60ft.) and whether the error
is to port or starboard of track.
•
Alarm condition. This indicates if information received
from the navigator is valid.
•
Heading to the next waypoint.
•
Next waypoint Number.
