Garmin GNS 430 Pilot Operating Handbook page 5

Cirrus Design
SR20
The Navigator will display a welcome page while the self-test is in
progress. When the self test is successfully completed, the
Navigator asks for NavData database confirmation, acquires
position, and then displays the acquired position on the
Navigator's display and on the MFD.
The Navigator is not coupled to an air and fuel data computer.
Manual fuel-on-board and fuel flow entries must be made in
order to use the fuel planning function of the AUX pages.
The GPS Navigator utilizes altitude information from the
altitude encoder's altitude digitizer to enhance altitude
information.
GNS 430 Integration
The GNS 430 Navigator is integrated into the SR20 Avionics
installation in three configurations:
1. Single GARMIN GNS 430 (GPS 1) interfaced with the CDI and
MFD and a single GARMIN GNC 250XL (GPS 2) not integrated
with a remote indicator.
a. In this configuration, pressing the alternate-action CDI push-
button on the GARMIN GNS 430 (GPS 1) alternately selects
GPS or NAV for display on the CDI each time the button is
pressed. The CDI source is indicated by illumination of the
"GPS" or "VLOC" annunciation in the lower left corner of the
GNS 430 display.
The CDI displays course deviation from a VOR, Localizer
(LOC) or Glideslope (G/S) when VLOC is selected for
display and displays GPS track deviation when GPS is
the selected navigation source.
b. GPS 2 in this configuration is a GARMIN GNC 250XL GPS
Navigator with VHF Com. This unit displays GPS data on the
unit's display panel only and is not integrated with any remote
indicator. Refer to the SR20 POH Supplement for GARMIN
GNC 250XL GPS Navigator, P/N 11934-S05.
P/N 11934-S22
Revision 2: 08-15-07
• Note •
• Note •
Section 9
Supplements
5 of 10