Garmin gpsmap 198c sounder User Manual

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The Map tab changes the show properties of the Map Page.  

The following pages contain descriptions of the Map tab’s eight 

sub tabs.

•  Detail—Most, More, Normal, Less, Least: controls how 

much map detail is shown. This setting only applies to map 

features set to Auto. Features that have a specified zoom 

range or are turned off are unaffected by this setting.

•  Orientation—North up: fixes the top of the Map Page to 

a north heading. Track up: fixes the top of the Map Page to 

the current track heading. Course up: fixes the map so the 

direction of navigation is always up.

•  AutoZoom—On, Off: when On the map automatically 

adjusts the map zoom range to a lower range as you 

approach you destination point.

•  Color Mode—For Sun, For Dark: controls colors change to 

correct for day and night lighting conditions. 

•  Basemap—On/Off: turns the built-in base map on or off.
•  Data Card Maps—On/Off: turns all optional BlueChart/

MapSource data loaded on the data card on or off. The 

Data Card Maps option box shows a list of the optional 

BlueChart/MapSource data loaded on the data card. Each 

area is described by name and can be deselected if you do 

not want to show the data on the Map Page.