Operation Manual

Robertson AP300X Autopilot
36 22081814H
− Navigate directly to any previously stored waypoint or to a
temporary waypoint
− Navigate through any route of waypoints stored in memory
(forward or reverse)
− A unique "skip" feature to enable changing the next waypoint
when following a route
− Display of waypoint bearing in either Magnetic or True
− Man over board (MOB) mode to automatically display
position, distance and bearing to MOB saved location.
• An X-Y PLOT mode that displays ships' position, waypoint
position and plot line of the ship's movement.
Availability of data sources
In order to fully utilize the features of the AP300DLX, necessary sensor
data (position, speed, depth, temperature, wind) must be available at
the system NMEA input port(s).
Use of external position sources
The AP300DLX navigator uses position information supplied by an
external position source such as a Loran C or GPS as the basis for it's
navigation calculations. This is normally referred to as POS source and
is the source where AP300DLX determines and displays Latitude,
Longitude, Speed Over Ground (SOG) and Course Over Ground
(COG). The accuracy of the calculations performed by the AP300DLX
navigator can only be as good as the position accuracy supplied by the
external navigator.
JUNCTION UNIT
Selected position data Position data 2
AP300DLX
CONTROL
UNIT
GPS
POSITION REFERENCE
SOURCE
POSITION REFERENCE
SOURCE
LORAN C
Position data 1
With the AP300DLX system, the possibility exists for multiple position
sources to be connected into the system. Having multiple position
sources (for example: Loran C, Decca and GPS), presents the ability to
quickly switch from one navigation system to another in the event of
degraded signal quality or position accuracy. In an instant, the
AP300DLX will accept the new position sensor input, and continue to
update the navigation calculations, both to the AP300DLX display and
out to the autopilot.