89000109-002
xVue Touch Installation Manual
Rev 2
Page 2-4
© Honeywell International Inc. Do not copy without express permission of Honeywell.
For Use in Non-Certified Aircraft
2.3.3 KG 71EXP Air Data Attitude Heading Reference System (ADAHRS)
The KG 71EXP provides attitude, altitude, airspeed, air temperature, vertical speed and heading
information for the xVue Touch System. The air data parameters are calculated based on total pressure,
static pressure, and air temperature. The attitude and heading reference system provides current
airplane attitude based on inertial sensors and an aiding source (GPS or airspeed). The heading value is
stabilized using the KMG 7010/MD32 Magnetometer measurement.
For the KG 71EXP to be fully functional it requires connection to the airplane pitot-static system and data
from the KMG 7010/MD32 Magnetometer and the KTP 73 OAT Probe and connection with a WAAS GPS
source. Only the GPS units identified in this install manual will be authorized to provide inputs to the KG
71EXP. The approved WAAS GPS sources include the BendixKing KSN series, the Garmin GNS-W (only the
GNS 430W and GNS 530W are certified WAAS navigators) and GTN series; and the Avidyne IFD series that
include GPS.
The KG 71EXP communicates with the KSD 100EXP via a dedicated ARINC 429 interface. Additionally, the
KG 71EXP provides two ARINC 429 transmit channels which can be configured as required for interface to
other airplane avionics. The configuration options include either a pre-defined configuration, or the
option for a custom list of labels including transmit rates. Both transmit channels have the option to be
configured for either high speed ARINC or low speed ARINC.
The KG 71EXP communication with the KMG 7010 Magnetometer is via a dedicated Controller Area
Network (CAN) bus. The KG 71EXP communication with the MD32 Magnetometer is via the KDC 100EXP
data converter.
The KG 71EXP has a dedicated connection to receive temperature data from the KTP 73 Outside Air
Temperature Probe.
The KG 71EXP receives GPS WAAS data from a connected GPS via an ARINC 429 receive channel. The KG
71EXP requires the following GPS data, present position latitude/longitude, ground speed and track
angle. The transmit channel on the GPS source is connected to both the KG 71EXP and the KSD 100EXP.
The KG 71EXP includes an RS-232 transmit channel to provide altitude data to a connected traffic device
such as a transponder that outputs Traffic Information System (TIS) data.
The KG 71EXP also includes a dedicated RS-232 channel for communication with the maintenance
computer to support configuration of the KG 71EXP and KMG 7010/MD32.
The KG 71EXP ADAHRS is referenced throughout this document as either KG 71EXP or abbreviated as KG
71.
2.3.4 KMG 7010/MD32 Magnetometer
The KMG 7010/MD32 is a magnetometer that senses Earth’s magnetic field and provides magnetic
heading data to the KG 71EXP. The KMG 7010/MD32 sensing unit is located internally in the airplane
wing or in the empennage, separated from all devices generating electromagnetic fields (motors, ferrous
metal, wiring, magnets, antennas or anything else causing magnetic interference). The measurements of
the Earth’s magnetic field is transmitted by a CAN Bus interface to the KG 71EXP (through the KDC
100EXP with MD32). The data from the KMG 7010/MD32 is used for long-term heading output
stabilization.
2.3.5 KDC 100EXP Data Converter
The KDC 100EXP is a data converter that converts ARINC 429 messages from the MD32 Magnetometer to
CAN BUS, transmitting it to the KG 71EXP (raw data).
