Garmin GPS 400 Pilot's Manual And Reference page 9

Key and Knob Functions
The GPS 400 is designed to make operation as simple as possible. The key and
knob descriptions on the next three pages provide a general overview of the primary
function(s) for each key and knob. This Takeoff Tour section is intended to provide a
brief overview of the primary functions of your GPS 400. Experiment with the unit
and refer to the Reference sections for more information.
Left-hand Knob
l
The power knob controls unit power. Rotate clockwise to turn the unit on.
Right-hand Keys and Knobs
The range key allows you to select the desired map scale. Use the up
arrow side of the key to zoom out to a larger area, or the down arrow side
R
to zoom in to a smaller area.
The direct-to key provides access to the direct-to function, which allows
you to enter a destination waypoint and establishes a direct course to the
D
selected destination. See Section 2.
The menu key displays a context-sensitive list of options.
This options list allows you to access additional features or make settings
m
changes which relate to the currently displayed page.
The clear key is used to erase information or cancel an entry. Press and
hold this key to immediately display the Default Navigation Page (see
c
pages 8 and 18), regardless of which page is currently displayed.
TAKEOFF TOUR
Key and Knob
Functions
GARMIN
PWR
Left-hand Knob
GPS 400
Right-hand Keys and Knobs