Avidyne IFD540 Pilot's Manual page 144

User Option Item Title
Current Time
Keyboard Convenience
Map Orientation
4-36 AUX Pages
Description
rather than an automatically
calculated offset based on
current location. This should be
manually readjusted if crossing
time zones.
Just a display of current local
time for reference.
On – When dual IFD equipped,
the other IFD will present a
keyboard on which edits can
be made to the original IFD;
Off* - The other IFD will not
present a keyboard when an
edit is attempted on the original
IFD.
Heading-Up* - the map will be
displayed in heading up
orientation if heading is
available;
Track-Up – the map will be
displayed in track up
orientation
Note: Even though Heading-
Up is the default selection, if
there is no heading source,
then the default reverts to
Track-Up. Potential heading
sources include digital heading
from an ARINC420 source
(e.g. EFIS), WX500, serial 232
heading source and the IFD is
provisioned to accept analog
synchro heading input.