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VHF NETWORK:
Ground networks that AFIS interfaces with to establish a data link
with the Global Data Center.
ON: The appropriate VHF network will automatically be selected
whenever the aircraft present position is within the specified bound-
aries. (Figure 7-28)
OFF: Network is not enabled.
SAT NETWORK:
Satellite network that AFIS interfaces with to establish a data link with
the Global Data Center.
ON: The appropriate satellite region will automatically be selected
whenever the aircraft present position is within the specified bound-
aries.
OFF: Network is not enabled.
PRINTER CTRL:
Allows access to the Printer Control Page.
ACTIVE LINK:
Indicates the network in service,
i.e. ARINC, SITA or SATCOM.
(Figure 7-29)
NONE: All networks are turned
OFF or current position does
not correspond with the manual-
ly selected boundaries.
NOTE: The VHF network has
precedence over the satellite
network in areas of shared cov-
erage and must be turned OFF
in order for SATCOM to be the Active Link. AUTO REPORT, AUTO
WX UPDT and OPERATING MODE selection status are stored in
non-volatile memory. If the operator turns to OFF the operator must
reselect to turn ON.
7-19
GNS-XL Flight Management System AFIS Operation
Rev. 3
Oct/02
AUTO REPORT OFF
AUTO WX UPDT ON
VHF NETWORK OFF
SAT NETWORK ON
PRINTER CTRL
ACTIVE LINK: SATCOM
AFIS OPERATING MODES
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Figure 7-29