Data sources menu
When a network / system includes multiple sources
of the same data type, such as GPS / GNSS position data, the display
will choose the most appropriate source for the data. If you prefer,
you can manually select your own source for the data.
The Data sources menu can be accessed from the Settings menu: .

Data sources SelectionEach tab in the data sources menu enables you to view and select your preferred data source for that type of data. The currently active data source will display its current ‘value in use’. By default data sources are selected automatically and the source for the data may change depending on conditions.
With the Manual selection toggle enabled, you can manually assign your preferred source for the data. Manually selected data sources will not change.