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64 GPSMAP 198C Sounder Owner’s Manual
MAIN MENU > MAP TAB
Map Tab
The Map tab changes the show properties of the Map Page.
The following pages contain descriptions of the Map tab’s eight
sub tabs.
General Sub Tab
• 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.
Source Sub Tab
• 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.