Raymarine Radar equipment Raychart Chartplotter RC530 PLUS - Manual (Page 59)

Chapter 2: Getting Started & Adjusting the Display 2-23
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• If Plotter Mode is Off, the chart scale remains unchanged, indicating
the smallest chart scale is displayed.
Note: If Plotter Mode is Off and the cursor is homed to the vessel (see
Using FIND SHIP on page 2-20), if the vessel moves outside an area of
available cartography, the chart will automatically re-scale to the next
range with cartography.
• If Plotter Mode is On, the scale is decreased and the message NO CHART
DATA is displayed. The vessel, waypoints, routes and tracklines are dis-
played without cartography.
The chart information is restored when you return to a chart scale for which the
information is available.
➤ To zoom out to a smaller-scale (less detailed) chart, simply press the upper part
of the RANGE key as many times as required.
Radar/Chart Overlay
If radar data is available, as a function of the combined radar/chart display or
from another display connected on
hsb 2 , the radar targets can be overlaid on to
the full-screen chartplotter display. The radar/chart overlay option helps you
to distinguish between fixed, charted objects and other objects that could be
moving vessels. Some radar controls are available in overlay mode.
The following criteria must be true for radar/chart overlay to function
correctly:
• Position and heading data are provided so that vessel position and orienta-
tion can be determined.See Heading and Position Data on page 1-9 for
further details.
• The vessel must be displayed on screen.
• The chartplotter must be in North Up or Course Up mode (see Section 7.7).
• The chartplotter range must be between 1/4nm and 48nm (equivalent to a
radar range of 1/8nm to 24nm).
• Custom range scales are disabled on the radar.
• The radar must be transmitting.
To ensure the vessel remains on the screen, you could use Find Ship (see Using
FIND SHIP on page 2-20) to home the cursor onto the vessel.
When Radar/Chart overlay is switched on, the status bar indicates OVL. If the
option is switched on but the overlay is not visible (because one of the above
criteria has failed), the status bar indication changes to (OVL).
RANGE