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190-00728-04 Rev. A
Embraer Prodigy
®
Flight Deck 100 Pilot’s Guide
3
SYSTEM OVERVIEW
•
GIA 63W
(2) – Functions as the main communication hub, linking all LRUs with the on-side PFD. Each
GIA 63W contains a GPS SBAS receiver, VHF COM/NAV/GS receivers, a flight director (FD) and system
integration microprocessors. Each GIA 63W is paired with the on-side PFD via HSDB connection. The GIA
63Ws are not paired together and do not communicate with each other directly.
•
GDC 74B
(2) – Processes data from the pitot/static system as well as the OAT probe. This unit provides pressure
altitude, airspeed, vertical speed and OAT information to the system, and it communicates with the on-side
GIA 63W, on-side GDU 1240A and on-side GRS 77, using an ARINC 429 digital interface. The GDC 74B is
designed to operate in Reduced Vertical Separation Minimum (RVSM) airspace.
•
GEA 71
(3) – Receives and processes signals from the engine and airframe sensors. This unit communicates
with both GIA 63Ws using an RS-485 digital interface.
•
GRS 77
(2) – Provides aircraft attitude and heading information via ARINC 429 to both the on-side GDU
1240A and the on-side GIA 63W. The GRS 77 contains advanced sensors (including accelerometers and rate
sensors) and interfaces with the on-side GMU 44 to obtain magnetic field information, with the GDC 74B to
obtain air data, and with both GIA 63Ws to obtain GPS information. AHRS modes of operation are discussed
later in this document.