Northrop Grumman Sperry Marine VisionMaster FT, User Manual

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Radar/Chart Radar User Guide Navigation Tools
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4. When the required time value is shown, click OK to complete.
Position Spacing
The spacing of positions controls the gap between the past position dots.
The minimum is 1 minute and the maximum is 120 minutes.
To change the position spacing click in the
Desired field and when the
current value changes to green move the trackball to increase or decrease
the value, click again to accept the selected time. When a time is selected
the Displayed time will change to match the desired time.
Position Details
To view details on past position dots or event
marks click the
Position Details check box and
move the cursor over the symbol. A transparent
popup window will appear showing details of the
symbol, including date/time of creation and its
Lat/Lon position.
Event Marks
Event marks may be applied at any time to ownship's history track. These
are displayed as an event mark symbol.
To generate an event click the
Add Event button. An orange outline box
with a diagonal line through it is shown on the history track at the current
CCRP position.
The display of events can be toggled on and off by ticking the
Display
Events check box. When an event is added to a history track the marker
will appear at its original position whenever Display Events is switched on.