Garmin G3X - 2.1.1.16 Weather Data

190-01115-01 G3X™/G3X Touch™ Avionics Installation Manual
Rev. AV Page 2-11
2.1.1.16 Weather Data
The G3X system supports a variety of airborne weather data sources:
FIS-B weather data can be provided to GDU displays from a GDL 39R remote-mounted ADS-B receiver.
The GDL 39R can be connected to a single GDU display using RS-232. In a G3X Touch system, the
GDL 39R may also be connected to additional GDU 4XX displays wirelessly using Bluetooth.
A G3X Touch system with GDU 4XX displays can receive FIS-B weather data from GTX 45R, and
GTX 345/345R transponders through an RS-232 connection from the GTX to each GDU display. These
transponders can also simultaneously provide FIS-B weather data to a GTN or GNS WAAS navigator. The
legacy G3X system with GDU 37X displays does not support FIS-B weather data from GTX transponders.
The GDU 3X5 and GDU 4X5 displays contain a built-in XM satellite weather receiver. These displays
require a separate antenna connection and active XM subscription in order to receive satellite weather data.
For XM antenna installation information, refer to Section 20
.
A G3X Touch system with GDU 4XX displays is also compatible with the GDL 51R SXM receiver and
the GDL 52R dual ADS-B/SXM receiver. The GDL 51R/52R connect to each GDU 4XX display using an
RS-232 connection, or wirelessly through Bluetooth.
A WX-500 or similar lightning detector can be used with the G3X Touch system using an RS-232
connection to a GDU 4XX display. The G3X system displays lightning strike or cell data and provides
heading data output to the lightning detector.
For any of the above data sources, weather data is displayed only on the GDU displays that are connected
to the weather source (either by an RS-232 connection, wirelessly through Bluetooth, or from an internal
XM receiver). Weather data is not shared between GDU displays through the CAN bus.
On a GDU display that has access to multiple sources of weather data simultaneously, the pilot may switch
between available weather sources at any time.
When connected to a FIS-B weather receiver, the GDU 4XX can receive METARs, TAFs, Winds aloft,
NEXRAD, TFRs, AIRMETs, SIGMETs, PIREPs, NOTAMs, Cloud Tops Forecast, Icing Forecast,
Lightning, and Turbulence Forecast over either an RS-232 or Bluetooth connection.