Changing The Chart Scale - Raymarine RayChart 630 Owner's Handbook Manual

Chapter 2: Getting Started and Controlling the Chart Display
Note: If you have selected a chart display with one or two data windows, the
chartplotter will treat the start of the data window as the edge of the chart.

Changing the Chart Scale

The RANGE key allows you to change the cartography scale so that you can see
a smaller or larger area on the screen. Plotter mode is available to allow you to
zoom into a smaller area, even when no chart data is available for that scale.
Chapter 6 describes how to set plotter mode on/off.
You can change the chart scale for two purposes:
• To see either more detail (a smaller area) or a larger area on the screen
• To move the display to another area of the chart, by zooming out to a small
scale chart, then zooming in on another area
Small scale charts give you the wider view, but without the level of detail that
you may need in order to navigate safely. The amount of detail that is visible
depends on the amount available for that chart, and also on how you have
specified the cartographic detail when you set up your chartplotter (see Chapter
6).
To zoom in to a larger scale chart:
1. Use the trackpad to position the cursor in the area you wish to see in more
detail.
2. Press the lower part of the RANGE key.
The section of the chart around the cursor is enlarged to fill the screen with
a larger-scale chart showing more detail. The cursor is now positioned in
the center of the screen.
The range scale indicated at the top left of the screen is updated.
Note: If you hold down the RANGE key, the range scale display is redrawn
quickly without the chart being redrawn. Simply release the key when the
required scale is shown, and the chart will then be updated.
3. If further chart enlargement is available using the current chart card you can
press the bottom of the RANGE key to zoom in again, repositioning the
cursor first if required.
An area of further chart detail is indicated by a chart boundary.
4. When no further chart detail is available, as you press the bottom of the
RANGE key, the effect depends on whether you have set Plotter Mode on
or off as follows:
- If Plotter Mode is off (the default setting), the chartplotter beeps three times
and the range scale remains unchanged.
- If Plotter Mode is on, the range scale is increased and the display shows grid
lines and no cartography. The letter "P" is displayed after the scale rule to
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