Garmin G3X Installation Manual page 710

32.4.18 RS-232 Configuration Page
The RS-232 Configuration Page allows setting the parameters for the communication ports on the
GDU 45X/46X displays, the GSU 73, and the ARINC 429 ports on the GAD 29 or GSU 73.
1. In configuration mode, use the Touch Panel or a Move Selector Knob to select the RS-232
Configuration Page.
2. Use the Touch Panel or a Move Selector Knob to select the desired configurable item and make the
desired change.
3. Press the Back key to return to the Configuration Mode page when finished (if desired).
Each connected GDU 45X/46X has five configurable RS-232 (PFD 1, MFD1, PFD 2, and MFD2)
channels. Use the Touch Panel or a Move Selector Knob to select the desired RS-232 channel, the optional
settings are:
Garmin Data Transfer - The proprietary format used to exchange data with a PC or a GDL 39
Garmin Instrument Data - Used for connecting to compatible Garmin LRUs (e.g. GSU 25, GMC 30X)
GTN Connext 2 - Used for connecting a GDU 4XX display to a GTN 6XX/7XX for performing Connext
functions, such as flight plan transfer.
Garmin HSDB - Used for connecting to compatible Garmin LRUs (e.g. GTS 8XX, see
Section 25.2)
Garmin VHF Comm - Outputs frequency tuning data to an SL40, GTR 200, or GTR 225 comm radio,
and receives radio status data for on-screen radio display.
Garmin VHF Nav/Comm - Outputs frequency tuning and VOR radial selection data to an SL30 or
GNC 255 nav/comm radio. Receives lateral/vertical NAV deviation signals and radio status data for on-
screen radio display.
190-01115-01 G3X/G3X Touch Install Manual - GDU 45X/46X Config and Post Install Checkout
Rev. AA
Section 24.2 and
Page 32-115