Humminbird 998c SI - Manual (Page 130)

120 Navigation Menu Tab
Map Datum
(Advanced)
Settings: Various, Default = WGS 84
Map Datum allows you to change the map coordinate system used by the
Fishfinder to match those of a paper map.
Course Projection Line
Settings: Hidden, Visible; Default = Visible
Course Projection Line allows you to display or hide an arrow extending
from the bow of the boat that projects your current course, and shows where
the boat will go if you continue on your present course.
3D View Outline
Settings: Hidden, Visible, Default = Visible
3D View Outline allows you to display or hide an outline on the Chart side
of either Chart or Bird's Eye Combo Views that shows what you're viewing
on the Bird's Eye side of the view.
Export All Nav Data
(Advanced)
Settings: Press the RIGHT Cursor key and follow
screen instructions.
Export All Nav Data allows you to export all saved Tracks, Waypoints, and
Routes to an MMC/SD card. If an MMC card isn’t installed, an error
message will be displayed. Insert the MMC card and try again. See Multi-
Media Card (MMC)/SD Slots for more information.
Delete All Nav Data
(Advanced)
Settings: Press the RIGHT Cursor key and follow
screen instructions.
This menu option should be used with caution!
Delete All Nav Data allows you to delete all saved Tracks, Waypoints, and
Routes.
Continuous Navigation Mode
Settings: Off, On, Default = Off
Continuous Navigation Mode allows you to continue to navigate and fish
around a particular waypoint, even if you pass over it multiple times.
GPS Receiver Override
(Advanced)
Settings: Internal, External, Auto; Default = Auto
GPS Receiver Override allows you to set which GPS receiver to use if you
have multiple GPS receivers plugged into the system. These multiple GPS
receivers may be internal, external, or connected via the InterLink™. If you
select Auto, your unit will select a GPS receiver automatically.
NOTE: If only one GPS receiver is plugged into your system, then Auto will be the only
option shown.