Avidyne IFD410 FMS/GPS, Руководство пилота

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IFD400 Series Pilot Guide
Aux Subsystem 4-85
GPS Navigation State Operational Meaning
Fault System has detected an internal fault
and does not have a satellite
navigation solution.
This may require a manual power
cycle of the IFD to restore a GPS
lock.
The graphical bars represent the relative signal strength of each
individual SV as well as the SV identification number. SV
numbers above 100 represent the SBAS satellites. It typically
requires three SBAS satellites before full SBAS functionality can
be realized.
The internal GPS receiver will automatically de-select satellite
vehicles from inclusion in the position fix if poor satellite health or
maintenance information is available in the satellite data stream.
However, there may be times, or geographic locations in the
world, where it is desirable to manually de-select a satellite
vehicle or series of satellite vehicles from the GPS solution. For
example, most locations in Australia can see a US WAAS satellite
and a Japanese MSAS satellite, neither of which are used for
Australian precision approach flying. In that case, it may be
desirable to de-select those specific satellite vehicles from the
GPS position fix algorithm.
Satellite vehicles (SVs) can be manually de-selected via the
Maintenance Mode pages. The de-selected SVs persist across
power cycles.