CHAPTER 2 CONTROLS AND DISPLAY
EFD1000 VFR PFD Pilot’s Guide
Page 2-9
091-00028-001 ( )
2.2.2.1. CDI Navigation Source Select Button
The CDI Nav Source Select Button is the center button (Figure 2-7). It selects which
of the available navigation sources will couple to the CDI, which in turn couples to
the autopilot (if available). Each press of the CDI Nav Source Button selects the next
available nav source, cycling through all available sources in a round-robin sequence.
The currently coupled CDI nav source is displayed directly above the CDI Nav Source
Select Button.
The available navigation sources are congured when the PFD was installed (depending
on what is installed in the aircraft and connected to the PFD). The available navigation
source choices are: GPS1, GPS2, VLOC1, and VLOC2.
If a navigation source is congured to be available, but is not providing valid navigation
data, its navigation source annunciation will be shown with a red slash through it, and
the CDI will not be shown with the Course Pointer. The pilot is able to select the invalid
source, but no navigation data is provided.
When one or more of the connected navigation sources is a combined GPS/Nav device
(e.g., some of the Garmin 400/500-series), the list of navigation sources available for
selection will be determined by the current CDI mode of the GPS navigator.
NOTE
When GPS is selected as the CDI’s nav source, but no
active waypoint is programmed in the GPS navigator,
that source will be shown as invalid until an active
ight plan or direct-to waypoint is programmed into
theGPS.
For example, with a Garmin GNS-430 installed as
the #1 navigation source, when “GPS” is shown
immediately above the CDI Button on the GNS-430,
the PFD will show GPS1 as an available , but invalid,
nav source. When the pilot presses the CDI Button on
the GNS-430 so that VLOC is now displayed on the
GNS-430, the PFD will show VLOC1 as the available nav
source, and GPS1 cannot be selected.
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