Garmin G3X Installation Manual page 719

32.4.21 COM Radio Configuration Page
The GDU 45X/46X supports on-screen control of up to two VHF communication radios (COM1 and
COM2). The Connection setting informs the system how each of the two supported com radios is
connected. Select None if on-screen radio control for a particular radio is not desired or no radio is
installed. Network Radio LRU 1 and Network Radio LRU 2 settings support Garmin radio LRUs that are
connected via the CAN bus, (GTR 20 and GTR 200) see
If an RS-232 format that supports remote com radio data has previously been configured, additional
RS-232 connection methods will appear in the list (for example, PFD1 RS-232 2). On-screen com radio
control is supported by the following RS-232 formats: Garmin VHF Comm, Garmin VHF Nav/Com, and
MapMX. The specific radio functionality that can be controlled via an RS-232 connection depends on the
features supported by the software version used by the com radio
1. In configuration mode, use the Touch Panel or a Move Selector Knob to select the COM Radio
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).
190-01115-01 G3X/G3X Touch Install Manual - GDU 45X/46X Config and Post Install Checkout
Rev. AA
Table 32-11.
(Table 32-11).
Page 32-124