Eagle 640c 操作指南

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Overlay Data command (left) on the Sonar Menu. Overlay Data Shown

selection menu at right. In this example, Depth will be displayed in a

large font.

When selected, the data type shifts to the top of the data list and a
check mark appears beside the data type. You can now use 

↓ or ↑ to

select other Data Types for display.

Data list showing Water Speed selected to display on Sonar Page.