Sperry Marine Visionmaster FT ECDIS, Руководство пользователя

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ECDIS User Guide Charts
65900012 4-13
Tool Functions
Chart Match
The Chart Match facility allows the operator to correct a discrepancy
between the radar video and the display. By selecting the radar object and
the chart object to be matched, an offset can be created that is applied to
the display. This offset persists until the chart match is cancelled, or until
all the chart cells displayed on the screen at the time of the selection are no
longer on the screen.
Chart Match includes the capability to specify a range and bearing
adjustment to be applied to any loaded chart in order to alter the chart’s
relative position to the own ship’s CCRP plotted position.
The operator specifies the range and bearing adjustment by selecting two
points on the chart display .
To reposition the chart do the following:
1. Click on the Select Points button in
the Chart Match area. The fields below
prompt to click on a chart object and
the Select Points button changes to
Cancel Selection .
2. To cancel the chart match click on the button, or to proceed move
the cursor into the chart display , the cursor displays
CM
below the
cross hair.
3. Click on the required chart object. The lower fields in Chart Match
prompts to click on a Radar Object.
4. Click on the radar object (return). The Chart Match fields change to
displaying the position (nautical miles and bearing) of the chart
object and the Chart Match Applied tick box becomes active.
5. Tick the Apply Chart Match check
box. The chart is shifted so that the
radar return and the chart object are
displayed at the same location on the
display.
6. To return to the previous chart position
untick the Apply Chart Match check box.