Data Link Weather; Activating Data Link Weather Services - Garmin G1000 NXi Pilot's Manual

HAZARD AVOIDANCE

6.1 DATA LINK WEATHER

Do not use data link weather information for maneuvering in, near, or around areas of hazardous
WARNING:
weather. Information contained within data link weather products may not accurately depict current
weather conditions.
Do not use the indicated data link weather product age to determine the age of the weather
WARNING:
information shown by the data link weather product. Due to time delays inherent in gathering and processing
weather data for data link transmission, the weather information shown by the data link weather product
may be older than the indicated weather product age.
The Data Link Weather feature enables the system to receive weather information from a variety of weather
sources, depending on the equipment installed in the aircraft. These sources may include SiriusXM Weather and
Flight Information Services-Broadcast (FIS-B). For each source, a ground-based system processes the weather
information collected from a network of sensors and weather data providers.
The SiriusXM Weather service, available with the Garmin GDL 69A and 69A SXM data link receiver and an active
service subscription, updates its weather data periodically and automatically, and transmits this information to the
aircraft' s receiver via satellite on the S-Band frequency. This service provides continuous reception capabilities at
any altitude throughout North America. Differences in performance between the GDL 69A and 69A SXM data
link receiver models, where relevant, are discussed where applicable in this section.
The FIS-B Weather service, available when equipped with a capable transponder which can receive 978
MHz Universal Access Transceiver (UAT) data, delivers subscription-free weather information periodically
and automatically to the aircraft. FIS-B uses a network of FAA-operated Ground-Based Transceivers (GBTs) to
transmit the information to the aircraft' s receiver. Reception is limited to line-of-sight, and is available below
24,000 feet MSL in the United States. FIS-B broadcasts provide weather data in a repeating cycle which may take
approximately ten minutes to transmit all available weather data. Therefore, not all weather data may be present
immediately upon initial FIS-B signal acquisition. FIS-B is a component of the Automatic Dependent Surveillance
(ADS-B) system, which offers both weather and traffic data; refer to the ADS-B Traffic discussion later in this
section for a more detailed discussion of the ADS-B system and its capabilities.

ACTIVATING DATA LINK WEATHER SERVICES

Service activation is not applicable to the FIS-B Weather service.
NOTE:
ACTIVATING THE SIRIUSXM WEATHER SERVICE
Before SiriusXM Weather can be used, the service must be activated by providing SiriusXM' s customer
service the coded ID(s) unique to the installed data link receiver. The Data Radio ID must be provided to
activate the weather service. A separate Audio Radio ID, if present, enables the receiver to provide SiriusXM
Radio entertainment. To view this information, refer to the following locations:
• The Aux - XM Information Page on the MFD
• The SiriusXM Activation Instructions included with the Data Link Receiver
• The label on the back of the Data Link Receiver
240 Garmin G1000 NXi Pilot's Guide for the Cessna Nav III 190-02177-00 Rev. A