Garmin GNS 430 Pilot's Manual And Reference page 12

SECTION 1
INTRODUCTION
NOTE: When the GNS 430 is displaying a list
of information that is too long for the display
screen, a scroll bar appears along the right-hand
side of the display (Figure 1-2). The scroll bar
graphically indicates the number of additional
items available within the selected category. To
scroll through the list, press the small right knob
to activate the cursor, then turn the large right
knob.
1-4
Scroll Bar
Figure 1-2 Scroll Bar
GNS 430 Pilot's Guide and Reference
Bottom Row Keys
The CDI Key is used to toggle which navigation source
(GPS or VLOC) provides output to an external HSI or
CDI.
The OBS Key is used to select manual or automatic
sequencing of waypoints. Pressing the OBS Key selects
OBS mode, which retains the current 'active to' waypoint
as the navigation reference even after passing the waypoint
(i.e., prevents sequencing to the next waypoint). Pressing
the OBS Key again returns the unit to normal operation,
with automatic sequencing of waypoints. When OBS
mode is selected, the pilot may set the desired course
to/from a waypoint using the 'Select OBS Course'
pop-up window , or an external OBS selector on the HSI
or CDI.
The MSG Key is used to view system messages and to
alert the pilot to important warnings and requirements.
See Section 13.1 for more information on messages.
The FPL Key allows the pilot to create, edit, activate,
and invert flight plans, as well as access approaches,
departures, and arrivals. A closest point to flight plan
feature is also available from the FPL Key. See Section 5
for more information on flight plans.
The PROC Key allows the pilot to select and remove
approaches, departures, and arrivals from the flight plan.
When using a flight plan, available procedures for the
departure and/or arrival airport are offered automatically.
Otherwise, the pilot may select the desired airport, then
the desired procedure.