12
- User and Installation Manual
AvMap
Ultra EFIS
magnetic north, are painted every 30° which is used to perform a compass calibration.
Compass calibration procedure:
STEP 1: Prepare aircraft position and system
Taxi the aircraft to the airports compass rose or an open field free from magnetic disturbances.
Have the aircraft nose pointed to the magnetic north (0°) radial on the airport compass rose.
Note:
use a magnetic compass for your reference if you execute the procedure in an open
field free from magnetic disturbances).
Set the aircraft in level and straight flight attitude by using jacks or blocks.
Note:
Make sure that the horizon line of the Ultra is aligned with the aircrafts straight & level
flight attitude.
IMPORTANT
: Perform this test with all on-board electronic devices switched ON.
IMPORTANT
: Let the Ultra system warm up and stabilize for about 5 minutes before
starting the calibration.
IMPORTANT
: Check on the HSI display if the Ultra receives a GPS fix.
Note
: in case of no GPS reception the Ultra reports on the PFD and HSI page in RED “NO GPS”.
STEP 2: Calibration calculation for north direction
Enter the SETUP mode by keeping the rotation knob pressed for 5 seconds and release
(see chapter 4 for further details). Push again the rotor knob, select “CALIBRATE” to enter
the calibration menu, then select “COMPASS” and select “CALIBRATE” (“Mag clear done”
message will pop up on the display).
The Ultra display shows: “Point to NORTH. Press NEXT when ready”.
Make sure that the aircraft nose is pointed to the magnetic north (0°) radial on the airport
compass rose and make sure that the aircraft is not moving. Then confirm by pressing “NEXT”.
Note:
The calibration calculation for north direction will start and a counter will inform
of the progress.
STEP 3: Calibration calculation for east direction
The Ultra display shows: “Point to EAST. Press NEXT when ready”.
Have the aircraft nose pointed to the magnetic east (90°) radial on the airport compass rose.
Set the aircraft in level and straight flight attitude by using jacks or blocks.
Let the system stabilize for about 30 seconds and make sure that the aircraft is not moving.
Then confirm by pressing “NEXT”.
Note:
The calibration calculation for east direction will start and a counter will inform
of the progress.
STEP 4: Calibration calculation for south direction
The Ultra display shows: “Point to SOUTH. Press NEXT when ready”.
Have the aircraft nose pointed to the magnetic south (180°) radial on the airport compass rose.
