Avidyne IFD540 Pilot's Manual page 78

screen. The depicted current range numeric is replaced by "Min"
and "Max" for two seconds before timing back out to the actual
range number when at the two range extremes.
Pressing the knob cycles through the various map views. The
map view selected is indicated at the top of the map next to the
heading box. No indication means Heading Up. All other options
are labeled next to that heading box. Depending on the
installation, map view options can be:
 Heading Up or Track Up (360°)
 Heading Up or Track Up (240° arc view)
 North Up (360°)
Heading vs. Track selection is made from the "Map Orientation"
selection on the User Options – SETUP tab of the AUX page.
North Up can be either Magnetic North or True North depending
on the "Bearing Reference" selection on the User Options –
SETUP tab of the AUX page.
North-Up, 360 View Example
3-2 Map Pages