190-01717-B1
G500/G600 TXi Part 23 AML STC Maintenance Manual
Rev. 1
Page 2-12
2.2.9
GDC 72 ADC Unit
The GDC 72 Air Data Computer receives information from the existing aircraft Pitot-Static system and the
GTP 59 OAT probe. The GDC 72 provides pressure altitude, airspeed, vertical speed, and OAT data to the
G500/G600 TXi system. The GDC 72 provides data to the G500/G600 TXi using ARINC 429 digital
interfaces, as well as RS-232 for maintenance and configuration information.
Figure 2-12 GDC 72 ADC Unit
2.2.10 GMU 44 Magnetometer
The GMU 44 magnetometer senses magnetic field information and sends the data to the GSU 75/75B,
integrated ADAHRS, or GRS 77/79 AHRS to determine aircraft magnetic heading. This unit receives
power directly from the AHRS source and communicates with the AHRS using an RS-485 digital
interface.
Figure 2-13 GMU 44 Magnetometer
