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Using the GPSMAP 378/478
The advanced keypad system on the GSPMAP 378/478 is
designed to allow you to select options and enter data quickly and
conveniently. As you progress through this owner’s manual, you
are directed to press a specic key or highlight a eld on the screen.
When you are directed to press a key, you should press and quickly
release the key. If the key needs to be held down for a period of time
to start a secondary function, the instructions will tell you to do so.
When a eld is selected on the screen, it is highlighted in yellow.
The following terms are used throughout this manual:
• Highlight
—move the highlighted area on the screen up,
down, left, or right with the ROCKER to select individual
elds. Moving the highlight to a given location allows you to
make a selection, begin data entry, or scroll through a list.
•
Field—the location on a page where data or an option can
be shown and entered. Select (highlight) a eld using the
ROCKER to begin entering data or selecting options.
•
On-screen button—use the ROCKER to highlight a button
and press ENTER to select the button.
•
Scroll bar—when viewing a list of items too long to appear
on the screen, a scroll bar appears along the right side of
the list. To scroll through a list, press up or down on the
ROCKER.
•
Default—the factory setting saved in the unit’s memory. You
can change the settings, and you can also revert to the factory
(default) settings when you select Restore Defaults.
Highlighted eld
Field
On-screen buttons
Cartography
The GPSMAP 378 system contains preloaded U.S. inland freshwater
cartography to its enhanced worldwide basemap information.
The preloaded inland maps offer 50-meter shoreline resolution
throughout the US, with even more detailed 10-meter resolution on
select lakes. Other details include depth contours, tide and current
data, boat ramps, mile markers, hazards, marinas, campgrounds, area
roads, and more.
The GPSMAP 478 system contains preloaded marine map detail
utilizing BlueChart
®
g2 technology. Coverage is for US coastal
areas.
8 GPSMAP 378/478 Owner’s Manual
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