CMax Chart Pages (Optional)
Envision EX5000 -28- 600-00151-001 Rev 01
3.3 About Geo-Referenced Charts
The greatest additions to situational awareness come from charts that
are geo-referenced. A chart is geo-referenced when the chart data
supports a correlation of chart position to actual latitude and longitude
coordinates. This allows an ownship symbol and flight plan legs to be
accurately represented on the chart. If a chart is not geo-referenced,
the ownship and flight plan legs cannot be drawn on the chart. Most
Jeppesen approach charts and airport diagrams are geo-referenced;
most arrival, departure, and miscellaneous charts are not.
3.4 CMax Chart Page
The CMax function is found on the EX5000 as the Chart page, listed
in the Page Selector bar if CMax is enabled on your EX5000. The
Chart page is capable of having two charts ready for viewing at any
one time: an airport diagram, and a procedure chart (or other
miscellaneous chart associated with that airport). The airport and
associated charts are selected on the Chart Selection page,
described in Section 3.7, "CMax Selection Page" on page 39.
The EX5000 Startup page reports the valid dates for the currently
loaded chart data. If the date for the next update has passed, the
Startup page will report this in yellow cautionary text. If the chart data
becomes more than 10 weeks out of date, access to the charts shall
be revoked until new chart data is loaded.
On power up, if your EX5000 is receiving a valid position from your
GPS unit, the Chart page will default to display the airport diagram of
your current position. An approach procedure chart will not be
displayed until one is selected. If no valid GPS position is available at
start-up, the Chart page will default to the Chart Selection page for
manual selection of a chart.
If you select the Chart page immediately upon power up, CMax may
still be initializing and will display the following message: “CMax
Initializing/Please Wait.” The Chart page will begin normal operation
when initialization completes.
On landing, if the Chart page is being displayed, the EX5000 will
automatically switch to display the Airport diagram for the current
location when the GPS Ground Speed drops below 50 knots.
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