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Most popular questions for - Instruments
There are two types of calibration procedures:

1. Horizon alignment calibration:
execute this calibration procedure to align the horizon line of the Ultra with the aircrafts straight & level flight attitude.

2. Compass calibration:
The purpose of this procedure is to compensate magnetic disturbances the Ultra is subject to, due to aircraft metal structures and electromagnetic components. These disturbances, if not compensated, could alter the heading value provided by the system. For this reason the magnetometer is disabled before the magnetometer calibration procedure is executed.
The procedure requires to point the aircraft nose in 4 directions (north, east, south and west
oriented to magnetic north). The total duration for this procedure is about 20 minutes.
The procedure is described in the user manual.

IMPORTANT: When the magnetometer of the Ultra is not enabled the Ultra uses GPS
source to show COG (course over ground) on the compass. To enable compass heading it
is necessary to calibrate the magnetometer. In case both GPS and magnetometer sources
are lost the compass becomes RED and is out of order.

IMPORTANT:
Before you proceed with the compass calibration, make sure that the horizon
line of the Ultra is aligned with the aircrafts straight & level flight attitude (see paragraph 3.1)

IMPORTANT:
The compass calibration procedure must be executed in an open field clean
of magnetic disturbances (we recommend at the compass rose of your airport).
Note: Most airports have a compass rose, which is a series of lines marked out on a ramp
or maintenance run up area where there is no magnetic interference. Lines, oriented to
magnetic north, are painted every 30° which is used to perform a compass calibration.




You can power the Ultra EFIS from an 10 to 35 Vdc supply.
Mount on the power wire (RED) the 1A fuse holder, provided in the box, to protect against short circuits.
Yes, the Ultra EFIS comes with an External GPS receiver.

Connect the external GPS receiveron the back side of the Ultra to the GPS port. The GPS receiver comes with a 1,5 meter cable and is designed for use inside the aircraft.

Note: an additional gps extension cable of 2 meter is available. The GPS receiver can be mounted to any convenient surface that has a clear view of the sky. It can be mounted on the aircraft’s dashboard using the included Velcro strip. The GPS receiver must have a clear view of the sky in order to receive satellite signals. GPS uses “line of sight” signals to locate and track satellites.
If the signals are obstructed by dense objects such as aluminum, steel or even heavy ice, the Ultra will not operate properly. Signals may also be blocked by heated wind screens (fibreglass, plexiglass and other plastics are normally transparent to GPS signals). If you find that the Ultra does not locate GPS FIX quickly or consistently, moving the location of the GPS receiver a few inches often provides a better view of the sky.
The Pitot and static ports on the back of the Ultra are equipped with 1/8” NPT female fittings. To connect the aircraft Pitot and static lines to the Ultra, you must use standard 1/8” NPT male fittings at the end of each of the lines. Installation along with other mechanical or digital altimeters and airspeed indicators is supported by mean of a T coupler (not included in the Ultra box).
Connect the Pitot line to the port labeled PITOT and the static line to the port labeled STATIC.

IMPORTANT: Use flexible plastic tubes and make sure the tubes fit tight on the NPT Pitot and static ports and can not get loose due to vibration.

IMPORTANT: We recommend to test the Pitot-static system for leakage after any alteration.

ATTENTION:  Make sure to properly calibrate attitude before proceeding with Compass Calibration.
the magnetometer calibration data is invalidated after every attitude calibration procedure (full attitude calibration and horizon alignment).

The Compass Calibration procedure must be executed in-flight and requires to steer the aircraft in 4 directions and execute some pitch up/down maneuvers. The total duration for this procedure is about 4 minutes.


Press MENU > TOOLS > EFIS > Compass Calibration.
The screen switches to Primary Flight Display mode, where a flight director (a magenta frame) shows the maneuvers to perform. Follow the magenta frame until the procedure is finished.
Assuming that the calibration is started with the aircraft heading North, the steps required are:

1.  Maintaining heading 000° execute: pitch up + 20°, back to straight flight and then pitch down -20°

2. Turn left to heading 270° by performing a standard rate turn (the proper bank will be shown by the flight director). The target heading for each step is shown as a magenta reference inside the heading tape.

3. Execute pitch up/down maneuvers as described in step #1

4. Repeat steps #2 and #3 for headings 180° and 090°, until reaching again the original heading.

5. At the end of a successful calibration procedures the compass instruments is enabled (i.e. red cross removed) and the HSI instrument correctly shows AHRS as data source, meaning that magnetic compass data are now available to the EFIS system.

Note: it’s not required to start the procedure heading north. Any starting direction is acceptable.
Note: If the calibration fails or the compass indicator is not enabled, repeat the calibration procedure. If several calibration attempts fails review the installation location of the A2. Magnetic disturbance could be too high in the selected area.



The small and light weighted ADAHRS module easily fits into the aircraft as it can be installed in any orientation (a proper calibration procedure must be performed). It is suggested to install the A2 aligned with the aircraft longitudinal axis, as it simplifies the attitude calibration process.

The right position should be:
- Near the pitot and static lines
-  In a location clear of strong magnetic or electromagnetic disturbances as much as possible.
- Avoid installing the A2 ADAHRS near electronic equipment (other digital EFIS, radios, transponders, etc), AC or variable DC cables, alternators, electrical motors, ferrous materials, etc. In such cases the proper behavior of the compass is not guaranteed (i.e.
the compass may be crossed as “out of order” or may give erroneous indications).

Hint: Use a hand-held compass to verify the magnetic disturbance in the area selected for installation. If the needle shows relevant changes or unstable indication, the location is not suitable for installation. Make sure to perform this test with all on-board electronic devices switched ON.



Scenario A.

No calibration needed.






Scenario B.
A2 ADAHRS  is aligned with the aircraft longitudinal axis, is not aligned with straight & level flight attitude but pitch and roll offsets are present: a Horizon Alignment procedure is required.






Scenario C.
A2 ADAHRS is not aligned with aircraft longitudinal axis,
nor with straight & level flight attitude:
Full Attitude Calibration procedure is required.
 


Horizon Alignment
Press MENU > STRUMENTI > EFIS > Horizon Alignment.
1. Make sure the aircraft is in straight and level flight attitude
2. Press the joystick to record a sample of pitch and roll angles



Full Attitude Calibration
Press MENU > STRUMENTI > EFIS > Full Attitude Calibration.

1. Select if the maneuver will be pitch up or down. For tricycle aircraft the pitch up maneuver can be performed by pushing the tail (pitch up), while tail draggers will execute a pitch down maneuver by raising the tail.

2. Reset A2 ADAHRS calibration data; select Start. Wait until the reset phase is completed.

3. Set the aircraft in level and straight flight attitude by using jacks or blocks (or by asking a friend to push or lift the tail and hold). Press ENTER (joystick click) to record the sample in level & straight flight.

4. Set the aircraft in a pitch up (or down) attitude and press ENTER to record the pitch up/down sample. WARNING: be very careful not to change the aircraft heading while performing the pitch up /down maneuver.

5. Set values to A2 by pressing ENTER. Wait a few minutes for the sensor to stabilize and realign. If pitch and roll after a few minutes are still not aligned fine-tune pitch and roll offset by executing a Horizon Alignment procedure.
1. press and hold the knob for 5 seconds, the Menu page will appear.
To go back to the main pages, press again for 5 seconds, or wait: the Menu page will be closed automatically after 10 seconds of inactivity.

2. Rotate the knob to select SETTINGS and press to confirm

3. Rotate the knob to select BRIGHTNESS and press to confirm

4. Press the knob to open the brightness controller
• Rotate the knob to choose the desired display brightness
• Press the knob again to close the brightness controller

5. Rotate the knob to choose BACK and press to confirm and exit.


1. press and hold the knob for 5 seconds, the Menu page will appear.
To go back to the main pages, press again for 5 seconds, or wait: the Menu page will be closed automatically after 10 seconds of inactivity.
2. Rotate the knob to select About item and press to confirm
3. In the about page you can read: the EngiBOX ID, Boot version, Loader version, Software version, Engine
type, Total lifetime of the engine and Time since last overhaul.


IMPORTANT: the EngiBOX ID is needed to register your EngiBOX through the EngiBOX APP, in order to download data and get customer support.
Software updates are released by AvMap for free. You just need to register your EngiBOX 
Registration is needed to get Customer Support.

1. Visit the Support section and the download page   select Aeronautical products > instruments
> EngiBOX to find out if there is a software update for your EngiBOX.

2. Click on Download. (You need to be registered on the AvMap website) if you are not
logged in, you can insert your login and Password received at the moment of registration.

3. Copy the software file on the microSD card.

4. Insert the microSD card into the EngiBOX while the EngiBOX is turned OFF.

5. Turn the EngiBOX ON providing power to the device. Automatically the EngiBOX starts
the update procedure. At the end of the update procedure the devices asks to press the
knob to proceed.

6. After the update process the EngiBOX starts up. You can check the software version in
the About page.
EngiBOX is compatible with the following sensors:

4 x INPUT Thermocouple (type K)
Application:
- Exhaust Gas Temperature (EGT) (2 Stroke / 4 Stroke)
- Cylinder Head Temperature (CHT) (2 Stroke)

2 x INPUT Thermoresistance (PT-100)
Application:
- Air Temperature, Coolant Temperature (2 Stroke)
- Oil Temperature, Cylinder Head Temperature / Coolant
- Temperature (4 Stroke)

1 x INPUT Oil Pressure pick-up (4-20 mA Rotax 456-180 or equivalent)
Measuring range: 0.75 to 10.75 bar
Application: Oil Pressure (4 Stroke)

1 x RPM pick-up
Measuring range: 100 to 9990 rpm

1 x INPUT Manifold Pressure
Measuring range: 200 to 2500 hPa

Note: Thermocouple and Manifold pressure input can be used in parallel with other measurement
devices.

WARNING: Thermocouple, PT-100 and Oil pressure sensors must not be referred to GND or
negative external power.

Power supply
Power the EngiBOX from an 10 to 35 Vdc supply. Mount on the power wire (RED) the 1A fuse holder,
provided in the box, to protect against short circuits.

Serial Connection
The EngiBOX has serial RS232 connection ports to interface to an external device.



• 2 stroke Air cooled: Rotax 447 UL SCDI, Rotax 503 UL DCDI
• 2 Stroke Liquid cooled: Rotax 582 UL DCDI, Rotax 618 UL DCDI
• 4 Stroke Liquid cooled: Rotax 912 DCDI series, Rotax 912S DCDI series, Rotax 914 DCDI series

These engines types are already pre-configured in EngiBOX, so you just need to choose your model in the initialization procedure. The engine initialization procedure is necessary to pair EngiBOX to the connected engine
model.

EngiBOX has several sensor input ports, which can be occupied variably according to the connected
engine type.

Support

WARRANTY

AvMap navigators are guaranteed for 2 years after  the purchase date.

 


How to get Customer Support
for your AvMap device:


1.   Register your Navigator

2.   Read the FAQsection

3.   If you do not find the answer to your problem, then write us filling the online Assistance form or contact the CALL CENTER +39 0585 784044

4.   The Customer Support will reply providing you instructions.

5.   If the problem cannot be solved over the phone or email, you will receive via email a repair code  ‘RMA’ with all the instructions to send us your navigator for repair.