Cirrus SR22 Pilot Operating Handbook page 283

C D
IRRUS ESIGN
SR22
GIA 63W/64W Integrated Avionics Units
The Integrated Avionics Units, located behind the MFD and instrument
panel, function as the main communication hub, linking all Integrated
Avionics System components with the PFD. Each Integrated Avionics Unit
contains a GPS WAAS receiver, VHF COM/NAV/GS receivers, system
integration microprocessors, and flight director if the optional AFCS is
installed.
28 VDC for Integrated Avionics Unit 1 operation is supplied through the
7.5-amp COM 1 and 5-amp GPS NAV GIA 1 circuit breakers on the ESS
BUS 1. 28 VDC for Integrated Avionics Unit 2 operation is supplied
through the 7.5-amp COM 2 and 5-amp GPS NAV GIA 2 circuit breakers
on the MAIN BUS 2.
GEA 71/71B Engine Airframe Unit
The Engine Airframe Unit, mounted behind the MFD, receives and
processes analog signals from the fuel gaging system, CHT, EGT, MAP,
RPM and other sensors and transmits this data to the Integrated Avionics
Unit.
28 VDC for Engine Airframe Unit operation is supplied through the 3-amp
ENGINE INSTR circuit breaker on ESS BUS 2.
GTX 335 Mode S Transponder
The GTX 335 solid-state transponder communicates with the primary
Integrated Avionics Unit and provides Modes A, C, and S with Extended
Squitter interrogation/reply. The transponder is controlled via the PFD or
Flight Management System Keyboard and is located in the empennage
avionics compartment.
28 VDC for Transponder operation is supplied through the 2-amp
XPONDER circuit breaker on AVIONICS. Refer to the Perspective+ Inte-
grated Avionics System Pilot's Guide for a complete description of the
system, its operating modes, and additional detailed operating procedures.
GMA 350 or 350c Audio Panel with Marker Beacon Receiver
The 350 or 350c Audio Panel, installed on the center console below the
Flight Management System Keyboard, integrates NAV/COM digital audio,
intercom and marker beacon controls. The VHF communications portion
of the unit interfaces with both Integrated Avionics Units to provide
external radio communication, receive and demodulate VOR, Localizer,
and Glide Slope signals.
28 VDC for Audio Panel operation is supplied through the 5-amp AUDIO
PANEL circuit breaker on AVIONICS.
For detailed operating instructions, refer to the GMA 350 or 350c Audio
Panel Pilot's Guide.
P/N 13772-006
Reissue A
S 7: A
ECTION IRPLANE AND
S
YSTEMS
A
VIONICS
7-77