Sperry Marine Visionmaster FT ECDIS, Руководство пользователя

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ECDIS User Guide Routes
65900012 8-57
External Routes
The VisionMaster FT system can be configured to accept external routes
from up to five external sources (for example, a GPS
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system), providing
they are transmitted to the system in an acceptable format.
External Route Validation
The external route is considered invalid if any of the following apply:
•
The latitude of any waypoint is within one degree of a pole.
•
There are fewer than two waypoints in the route.
All external routes are subjected to route validation. If an ERP is
considered invalid, it is not displayed and a warning is raised notifying the
operator of an attempt to import an invalid external route.
Default Attributes
If the waypoint or leg attributes of an external route are not specified, then
system default values are used.
All attributes of external routes are read-only, with the exception of leg type
and off-track alarm limit.
Monitoring External Routes
The External Routes menu is used to select the source of the external
route, and to monitor the route. Only one external route can be displayed
and monitored at a time. The following external route attributes are
displayed on the External Routes menu:
•
the ship’s cross-track distance from the route and whether the ship
is to the right or left of the track.
•
the estimated amount of time and distance before reaching the TO-
waypoint based on the current ground speed of the ship.
•
the name of the TO-waypoint
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while route monitoring.
The following functions are not provided for ERPs:
•
track control
•
return to planned route
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•
saving route
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Global Positioning System. A system by which receivers anywhere on earth can obtain
accurate position data.
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The waypoint to which the ship is approaching.
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A return to planned route is a leg that joins a temporary route with a planned route.