Northrop Grumman Sperry Marine VisionMaster FT, Руководство пользователя

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Basic Operation of Radar Radar/Chart Radar User Guide
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Cursor Readout
The cursor readout data is located in Status
Area at the bottom right of the screen. To
access the cursor readout click on the
Curs
tab.
The readout displays the location of the cursor
position relative to the CCRP of own ship.
Readout data appears when the cursor is
within any area of the video circle.
The Cursor readout includes the following:
 Latitude (LAT) corresponding to the current cursor position.
 Longitude (LON) corresponding to the current cursor position.
 Range - the distance between the CCRP and the cursor position as
measured in nautical miles (NM).
 Bearing from the CCRP to the cursor position, displayed as true or
relative by clicking on the T or R toggle button.
 Reciprocal bearing, defined as bearing from the cursor position to
the CCRP, displayed as true or relative by clicking on the T or R
toggle button.
 Time To Go (TTG) - the geographical distance, displayed as hours,
minutes and seconds, between the CCRP and the cursor position
divided by speed over ground (when in ground stabilised mode) or
speed through water (when in water stabilised mode) . For
information on stabilisation options, refer to Sensor Data Display
Indicator Display in Sensor Management.
Cursor data may be calculated based on Rhumb line route or Great Circle
route, the default is
Rhumb . To change the calculation of cursor data to
Great Circle click on the button, the button text changes to GC .
For more information on rhumb line and great circle, see the footnote
descriptions on page 8-18.
The LAT/LON readings are replaced by dashes if the following happen:
 the cursor passes over popup windows or toolbars

own ship’s position is lost
 the compass is unaligned
 there is a compass error.