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3. PLOTTER OPERATION
3-11
3.5.2 Indices and chart enlargement
When the [RANGE] key is operated, you will see several frames appear on the
chart. These frames are called indices and they show you what parts of the chart
can be zoomed in on.
Sample chart (Japan) showing indices
When a chart cannot be displayed
A chart will not be displayed in the following conditions:
• When the chart scale is too large or too small.
• When scrolling the chart outside the indices.
• When this happens, select proper chart scale.
Note: Indices can be turned on or off with “Chart border line.” See page 5-13 for
FURUNO and NAVIONICS charts and 5-16 for C-MAP charts.