AvMap ULTRA UX0EFS3XAM User Manual

Page 17

- User and Installation Manual

AvMap

Ultra EFIS

User and Installation Manual -

AvMap

Ultra EFIS

4.3 HSI display mode

The HSI shows navigation data: position, distance, directions, and radials relative to

reference navigation points. Figure 10

shows the data layout on the screen:

Figure 10

Current Position

VOR

indicator

Heading

ADF

Indicator

Wind

(Estimated)

IAS
Ground Speed

ADF Info box

VOR Info box

Heading Bug

Heading is shown in degrees with respect to magnetic north or true north. The Ultra

contains an internal world magnetic model that allows it to calculate the local magnetic

deviation and dip. A vertical card compass is also displayed for fast heading reference.

Note: in the “SETUP” menu you can choose reference with respect to magnetic north

or true north.

Course over Ground (COG) is shown on the compass instead of heading in case the

magnetometer is not calibrated or when the magnetometer has an failure. The COG

data is based on GPS source.

Note: If the compass source is GPS, the device shows “COG” aside the compass. If

the compass source is the magnetometer, the device shows “HDG” aside the compass.

Both can be shown in reference to magnetic north or true north.

Current Position is shown in latitude/longitude format. The Ultra can calculate position

even in the absence of GPS. In absence of GPS fix the position indicator change in

RED.

Wind data is approximated and displayed by the system when suitable GPS, compass

and IAS data are available. Wind direction is referred to the direction where the wind is

coming from.

Note: The speed units selected in the “SETUP” menu are also applied to wind speed.

Note: Without compass calibration (see chapter 3) wind data are not available.