Lowrance HDS-7 Carbon Operators Manual EN - Page 171

Text size Used for setting the text size in menus and dialogs. Default setting: Normal Key beeps Controls the loudness of the beep sound when a key is pressed. Default setting: Loud Time Controls the local time zone offset, and the format of the time and date. Datum Most paper charts are made in the WGS84 format, which also is used by the HDS Carbon. If your paper charts are in a different format, you can change the datum settings accordingly to match your paper charts. Coordinate system Several coordinate systems can be used to control the format for latitude and longitude coordinates displayed on the chart panel. Magnetic variation Magnetic variation is the difference between true bearings and magnetic bearings, caused by different locations 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 Status page for active satellites. WAAS (and EGNOS) differential position correction can be configured to ON or OFF. Restore defaults Allows you to select which settings are to be restored to their original factory settings. Tools | HDS Carbon Operator Manual 171