6. CHART OVERVIEW
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6.4 How to Select the Chart Scale
When you open a chart it is displayed with the default scale, called the compilation
scale. To change the chart scale, do one of the procedures shown below. The scale
range is 1:1,000 to 1:70,000,000.
• Click the chart scale selection buttons in the Chart scale/presentation mode box.
• Right-click anywhere inside the Chart scale/presentation mode to show a drop-
down list of chart scales.
• Put the cursor anywhere on the chart and spin the scrollwheel.
The table below lists the chart related messages and their meanings.
Message Meaning
Display date is not current Displayed date is not the current date.
Non-ENC data ENC non-compatible chart in use.
Large scale ENC available Larger scale available at current position (TM reset
ON) or cursor location (TM reset OFF).
Overscale Scale too large.
RM(OFF) Relative motion turned off when the chart is scrolled
or the trackball is operated.
Chart scale indication
Chart scale
selection buttons
Chart related
message
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