Sperry Marine VISIONMASTER FT ECDIS-E, User Manual

Page: 129 / 425

ECDIS-E User Guide Charts
65934012 4-37
2. To enable a previously disabled chart database click on the item in
the Disabled list and click the Up button between the Enabled and
Disabled fields. The database is moved back to the Enablement list
and will be available for selection.
Enabling Auto Scale Preferences
When automatic chart database selection is enabled for a display area, the
system periodically searches all enabled databases and automatically
changes the selected database to be the one which provides the largest
scale chart at own ship position. When multiple enabled chart databases
provide a largest scale chart with an identical scale, the chart database with
the highest priority is selected.
To enable Auto Scale Preferences to operate the display must be in Auto
scale mode, see Scale Ratio.
To enable tick the Allow Automatic Database Selection check box.
Manual Database Selection
When a display is in manual database selection mode, the display area
uses the selected chart database specified in the Chart button, see Chart
Database & Sub Menu Selection.
The chart display automatically switches from automatic database selection
mode to manual database selection mode as the result of the following:

The operator manually changes the selected chart database.

Automatic scaling mode becomes disabled.