EFD1000 E5 Dual Electronic Flight Instrument (EFI) Install Manual
DOCUMENT # 900-00041-001
PAGE 159-226
REVISION D
© Copyright 2019 Aspen Avionics Inc.
Figure 10-12: Calibration in Process
When the menu of Figure 10-13 is displayed immediately begin taxiing the aircraft
clockwise or counter-clockwise at a constant rate of no faster than 1 turn every 30
seconds. About half normal taxi speed or a brisk walking speed is about right.
Approximately 10 seconds after initial movement (see POSITION A) the aircraft should be
taxiing at a constant rate (CR) throughout the rest of the procedure. When the
countdown timer is reached between one and a quarter turns (450º) (POSITION B) and
two turns (720º) (POSITION D) should have been completed. While turning the aircraft do
not stop the aircraft until the end of the 60-second timer and Figure 10-14 appears.
If you find that the timing of the turns was not right such that “Magnetometer
Calibration Complete” message occurs between B & D of Figure 10-10, then REJECT the
results and re-run the procedure.
Figure 10-13: Aircraft Turning
At the end of the calibration routine the “ACCEPT CALIBRATION?” and “REJECT
CALIBRATION?” menu options will be enabled.
NOTE: If the message “Erroneous Calibration Values” is displayed then magnetic interference exists
in the vicinity of the calibration area or the RSM is mounted in a magnetically noisy area. Try
the calibration process again in a flat magnetically quiet area. If the message is displayed
again the RSM location must be surveyed for magnetic interference.
Figure 10-14: Accept/Reject Results
To determine whether to ACCEPT or REJECT the results check four headings
approximately 90º apart against a known good heading source (i.e., aircraft compass,
sight compass, compass rose).
MAGNETOMETER CALIBRATION
IN PROGRESS
DO NOT MOVE THE AIRCRAFT
FOR THE NEXT 7 SECS
MAGNETOMETER CALIBRATION
IN PROGRESS
TURN THE AIRCRAFT
NO FASTER THAN
1 CIRCLE IN 30 SECS
UNTIL TIMER STOPS
TIME REMAINING: ## SECS
MAGNETOMETER CALIBRATION
COMPLETE
PLEASE ACCEPT OR REJECT RESULTS
