Avidyne IFD540 Pilot's Manual page 158

Integration
Category
Basic electro-
mechanical nav
indicator
"Non-cooperative"
electronics (e.g.
G500/600, Aspen
EFD1000, Dynon
Skyview, EFIS
5-2 Navigation
Description
There is at least
one external CDI or
HSI in the airplane
and the IFD has
access to the
course data from it.
The IFD can
receive course input
from this external
device(s).
The IFD can send
IFD Functionality
a procedure, etc).
Nav source modes
available:
GPS,
VLOC,
GPS  VLOC,
OBS,
OBS  VLOC.
Set the course on
the external unit
and the IFD will
display that value.
No auto-slew
capability of the
course on the IFD.
The nav source
knob is basically
just a toggle button
to toggle between
the available states.
Nav source modes
available:
GPS,
VLOC,
GPS  VLOC,
OBS,
OBS  VLOC.
The nav source
knob is basically
just a mode change
knob to toggle
between the