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7-20
GNS-XL Flight Management System AFIS Operation
Rev. 3
Oct/02
VHF LINK CONTROL PAGE
This page is accessed when the
VHF Network is turned ON.
ARINC, SITA/AVICOM:
Ground networks that AFIS
interfaces with to establish a
data link with the Global Data
Center.
AUTO: The VHF network will
automatically be selected when-
ever the aircraft present position
is within the appropriate bound-
aries. (Figure 7-30)
MAN (manual): The desired network will be maintained independent
of the present position. In manual, the system will only allow trans-
mission when present position is within the appropriate boundaries.
All other networks will be turned OFF if one is in MAN.
OFF: Network is not enabled.
SAT LINK CONTROL PAGE
This page is accessed when the SAT Network is turned ON.
SAT COMM:
AUTO: The satellite network will automatically be selected whenever
the aircraft present position is within the appropriate boundaries and
VHF Network is turned OFF or is not in VHF coverage.
MAN (manual): The desired region will be maintained independent
of the present position. In manual, the system will only allow trans-
mission when present position is within the appropriate boundaries
and VHF network is turned OFF or is not in VHF coverage.
OFF: Network is not enabled.
AFIS OPERATING MODES
>
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VHF LINK CONTROL
ARINC AUTO
SITA/AVICOM AUTO
Figure 7-30