Avidyne IFD540 Pilot's Manual page 17

NOTE
Some Data May Be Delayed at Startup
Some data such as fuel flow and fuel totalizer may
experience a 5-10 second delay during post start
initialization. For those aircraft configured with fuel
totalizers, this may result in some fuel display
changes on the Fuel Mgmt tab during that period
including prompting the pilot to enter in initial fuel.
That should resolve itself within a few seconds.
Another example concerns the FMS nav database
initialization. In this case, the message "Please wait
– System Initializing" may be displayed on the FPL
tab for 10-30 seconds. Additionally, if the unit has
been exposed to extreme cold prior to start, it may
take a warm up period to achieve standard
performance.
TIPS AND TECHNIQUES
Manual Check of Database Dates
Even if the databases are all current, you can still
view the date/status of each database from the AUX
page, Database Status display as described in
Section 4 of this manual.
TIPS AND TECHNIQUES
"GPS No Position" Message Possible at Startup
If the GPS alignment takes an unusually long time
(e.g more than 2 minutes) to acquire an initial
position fix, the "GPS No Position" advisory
message will be displayed. This message will
automatically clear itself when a fix is acquired. If
the message does not remove itself by the time you
are ready to taxi, it is a clear indication that your
system has not determined its initial position and
action may be required on your part.
System Overview 1-11