190-00607-02 Rev C
Detailed Operation
Selecting an Airport in the IFR Function
. Hghlght the desred approach wth the
arrow
keys and then press the
Load
key.
Selecting an Approach Chart in the IFR Function
. Adjust the zoom level usng the
In
or
Out
keys.
Viewing the chart as an overlay
Display of Coverage Area
Once the desired approach chart has been loaded,
a green Annunciator bar with the approach name is
illuminated at the top of the Custom and IFR maps. If
the aircraft is outside the coverage area of the approach
chart, a black rectangular box will be presented that
shows the coverage of the chart itself.
Once the aircraft has entered the coverage area, the
chart contents will be displayed on the screen. Note
that a loaded approach chart is only viewable when
the aircraft is in flight, otherwise, the airport surface
chart has priority and the approach chart must be
viewed in the ChartView function.
Chart Zooming
Auto zoom mode is supported from the Custom
Map and is recommended to reduce the workload
associated with maintaining an appropriate zoom
level. In auto zoom mode (entered by zooming all the
way down or all of the way up), the zoom scale will be
calculated to maintain the active waypoint of your GPS
receiver on the screen at all times.
When an approach chart is loaded and being
displayed, the auto zoom mode will limit the low-end
zoom level to 5 NM as the current waypoint is being
approached. This prevents the display from zooming
into a level where the overall situational awareness
relative to the approach as a whole is lost. This can be
over-ridden by taking the unit out of auto zoom mode.
This limit does not apply when the auto-zoom mode is
tied to the GNS 480-series GPS receiver.
Chart Panning
Panning on the loaded chart is currently not sup-
ported. Entering the panning mode will disable the
display of the chart and allow the underlying map
layers to be presented.
Chart Orientation
When the chart overlay is presented, the orienta-
tion is identical to the currently selected orientation of
the map itself (North up, track up or desired track up)
with the ownship position correctly geo-referenced
and presented on the chart. Note that rotation of the
text on the charts themselves is not supported, mean-
ing that text may not be oriented horizontally when
displayed in track-up fashion.
Chart Info
Pressing the
Info
key when a chart is loaded will
change the smart key labels to Header, Profile, Mins,
and Info. Pressing the corresponding keys will allow
the different parts of the chart to be presented along
the bottom of the screen. Pressing the
Info
key will
disable this mode and return the menu to the normal
map controls.
ChartView - Chart
