Garmin eTrex Mariner Owner's Manual And Reference Manual page 13

Navigation Page Basics
Destination (Waypoint) Name
Time to Destination
Selectable Data Fields
The Navigation Page displays directional information
to guide you to a destination. The Status Window at
the top of the page shows you the name of your destina-
tion, the distance, and the time to go. A Bearing Pointer
and Compass Ring are displayed to provide you with
navigational guidance. Two Data Fields are provided, and
can be programmed to display a variety of navigation
data.
To navigate to a destination, simply follow the Bearing
Pointer. The Bearing Pointer will always point directly
to the destination, no matter what your current location
might be.
When you are not on an active Goto, Track or Route
(in other words: not traveling to a recorded destination),
the window at the top of the page will display the status
of the GPS Receiver and the approximate accuracy of your
current position. The Compass Ring will be displayed,
indicating your heading while you are moving, but the
data fi elds at the bottom of the page will not display
any destination related data, such as Estimated Time of
Arrival, etc.
Straight Line Distance
to the Destination
Bearing Pointer
Compass Ring
Getting Started
Page Basics:
The Main Pages
Important Note:
Because the eTrex Mariner is
designed for both marine and
land based navigation, the
illustrations shown throughout
this manual depict examples of
either application.
For example: the Track shown
in the getting started section is
based on foot travel when learn-
ing to use the unit, while the
Route shown in the reference
section depicts a route consisting
of seaports and maritime navi-
gation aids. Yet, these features
are not restricted to just these
applications, they work for both
land and maritime navigation.
Elevation (Altitude) is deter-
mined by the GPS satellite's
measurement of a mathematical
model of the earth, and because
satellite signals can be distorted
by the atmosphere, there will be
some error. Altitude accuracy is
generally less accurate than the
Horizontal accuracy.
The Horizontal accuracy is dis-
played in the Status Window on
the Map and Navigation Pages.
Example: If you are at (Mean)
sea level and the elevation read-
ing is greater or less than 0, it
may be the result of the margin
error.
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