Northrop Grumman Sperry Marine VisionMaster FT, Руководство пользователя

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Radar/Chart Radar User Guide Navigation Tools
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Ownship History
Ownship history tracks are a series of lines
indicating the past locations of ownship as
defined by position sources. There are two
types of history track:

Primary - a line indicating the past
location of ownship as defined by the
configured position sensor (usually
GPS).

Secondary - lines indicating the past
locations as defined by other position
data sources, see Position Values.
Primary and Secondary history tracks may be
displayed simultaneously by clicking the
Selected Sensor History check box and
selecting a history track from the Sensors
History list. The history tracks are
differentiated by line style and displayed in the
same colour as the heading line. Past position
dots are displayed on the history tracks,
spaced at operator selected intervals.
Event marks may be added at any time to
ownship's history track.
Details of past position dots and event marks may be displayed.
Primary History Track
To turn the primary history track on tick the primary position sensor (e.g.
GPS ) check box from the Sensor Histories area. When the Connect Past
Positions check box is ticked the screen shows a solid line with a series of
past position dots. The number of dots shown will be based on the
maximum length of the track and the spacing of the position dots.
To remove the line and display the position dots only untick the
Connect
Past Positions check box.