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System Overview
less complexity.
MODULAR DESIGN
This system was designed to be modular; modular in the overall
architecture, hardware, software and from a packaging
perspective. This approach produces future extensibility and
provides Avidyne with flexibility in adapting the system to meet
future needs.
DATABUS
One of the key modularity components employed in this system is
the databus. This dual, digital databus is peer-to-peer, meaning it
is not reliant on a single designated bus controller passing data
serially to every component on board. Instead, every component
individually passes data to the bus during a given time slot and
selects only the data it is interested in seeing from other
components.
For additional information on databuses and how they are
relevant to the behind-the-scenes operation of the system, see
this article “What’s Next in Avionics” accessible via this hyperlink:
http://www.avidyne.com/news/index.asp
A true dual-redundant peer-to-peer databus
improves critical
sensor availability, and computation modules are not “daisy-
chained” together in a manner that can create cascading failures.
With a true dual redundant databus, single-point failures remain
just that, single point failures. They do not adversely affect other
vital, otherwise operational functionality.
A true dual redundant databus design means true reliability and
redundancy.
Unlike other systems that require complex, limited,
and unfamiliar reversionary modes this offers double critical
function redundancy via the dual redundant databus architecture.
HARDWARE MODULARITY
There are spare modular avionics slot in each IFD available for
future functions. When new requirements emerge or hardware
technology advances, a new module can be added or an existing
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