Manual Number 9018233 Revision C, February 21, 2022
20
Procedure
1. Power off MD302.
2. Uncover the USB port and insert flash drive containing the configuration file.
3. Power on MD302.
4. The STATUS indicator will blink green while calibration is processed.
5. The RESULT indicator will illuminate green if the calibration is successful.
6. Remove the USB stick while power remains on.
7. The MD302 will reboot and illuminate STATUS green to indicate normal operation with
the new calibration.
8. Reinstall USB cover.
If the RESULT indicator is not green following Step 5, the calibration was not completed.
This could be due to a misspelled entry, improper syntax or improper test pressure.
IMPORTANT: AFTER CALIBRATING PRESSURE, THE AIRSPEED AND ALTITUDE
FUNCTIONS MUST BE TESTED FOR THE REQUIRED TOLERANCES ACROSS THE
OPERATING RANGE OF THE AIRCRAFT.
Heading Calibration
After installation of a MD32 Remote Magnetometer, on-aircraft calibration must be performed to
calculate the alignment and remove the aircraft effects on the magnetometer. See the MD32
Installation Manual (9019050) for instructions on mounting and wiring.
NOTE: Please read all of this section prior to starting the heading calibration process.
Preparation
The following issues need to be considered when performing the heading calibration:
The MD32 should be installed in a magnetically quiet location, away from any ferrous
materials.
The MD32 must be permanently installed and connected to the MD302 with power
on. The CALIBRATE HEADING menu item will not be selectable if the MD32 is not
properly communicating with the MD302.
All aircraft equipment should be powered up and functioning prior to starting the
heading calibration.
An accurate heading reference for headings 360, 090, 180, and 270 is required. An
airport compass rose is recommended.
A flat and level surface should be used during the heading calibration.
Any magnetic noise sources should be kept away from the aircraft during the
calibration procedure.
The aircraft should be held as stationary and level as possible during the calibration
procedure.
Have a timer or stopwatch available to use during the procedure.
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