Units; Coordinate System; Magnetic Variation - Lowrance HDS Gen2 Touch Operator's Manual

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Coordinate system

Defines the coordinate system used when position coordinates are
entered and displayed.

Magnetic variation

Magnetic variation is the difference between true bearings and
magnetic bearings, caused by different location of the Geographic
and the Magnetic north poles. Any local anomalies such as iron
deposits might also affect the magnetic bearings.
When set to Auto, the system automatically converts magnetic
north to true north. Select manual mode if you need to enter your
own local magnetic variation.
Satellites
Illustrates the location of satellites in view and the quality of the
unit's satellite lock.
Restore defaults
Allows you to select which settings are to be
restored to their original factory settings.
1.
Tap Restore defaults
2.
Select items to be restored to factory defaults.
3.
Tap OK
Warning: If waypoints, routes and trails are selected, they will
be permanently deleted.
Advanced
Shows a dialog with more advanced settings.
About
Displays unit software information.

Units

Controls unit of measure used for various data types. Units are
accessed from the Settings panel.
System Settings | Lowrance HDS Gen2 Touch