Garmin G1000 Piper PA32 - Manual (Page 14)

190-00692-00 Rev. B Garmin G1000 Pilot’s Guide for Piper PA32 1-4
SYSTEM OVERVIEW
• GTX 33 (1) – The GTX 33 is a solid-state, Mode-S transponder that provides Modes A, C, and S operation.
The GTX 33 is controlled through the PFD and communicates with both GIA 63Ws through an RS-232 digital
interface.
• GDL 69/69A (1) – A satellite radio receiver that provides real-time weather information to the G1000 MFD
(and indirectly, to the inset map of the PFD) as well as optional digital audio entertainment. The GDL 69/69A
communicates with the MFD via HSDB connection. A subscription to the XM Satellite Radio service is required
to enable the GDL 69/69A capability.
• GSA 81 (3), and GSM 85A – The GSA 81 servos are used for the automatic control of roll, pitch, and pitch
trim. These units interface with each GIA 63W.
The GSM 85A servo mount is responsible for transferring the output torque of the GSA 81 servo actuator to the
mechanical flight-control surface linkage.