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Domande piu visitate su - Ultra EFIS
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.


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