Garmin G3X Installation Manual page 458

31.4.2 LRU Configuration Page
The LRU configuration page is used to configure which optional LRUs are connected to the system. If a
particular LRU is not installed, or a particular LRU function (such as AOA) is not desired, change that
setting on the LRU configuration to "Disabled".
For example, if a GSU 25 is connected as ADAHRS 2 but no GMU 22 or GTP 59 is connected, configure
ADAHRS 2 to "Enabled" and Magnetometer 2 and OAT 2 to "Disabled". Also change any AOA item to
"Disabled" if the installed ADAHRS LRU does not support AOA (e.g. the GSU 73) or if the AOA
pneumatic connection is not connected to that ADAHRS LRU.
The Engine Interface item is used to configure which numbered EIS LRU should be used. This should be
left configured for EIS1 except in the case of a system that includes a GSU 73 and a GEA 24, the latter of
which would be wired as EIS2.
The Autopilot Servos item is used to configure how many GSA 28 servos are installed. Select "Roll Only"
if a single roll servo is installed, "Pitch + Roll" for a two-axis autopilot servo installation, or "Pitch +Roll+
YD" for a two-axis autopilot installation with a third yaw damper servo.
1. In configuration mode (Section 31.2), use the FMS Joystick to select and view the LRU Page.
190-01115-01 G3X/G3X Touch Installation Manual - GDU 37X Config and Post Install Checkout
Rev. AA Page 31-6