New Open System (NOS)

New Open System (NOS)


Fecha: 2019 – 2020

NOS is a New Open System Line Replaceable Unit (NOS-LRU). A system based on an ARINC 600 housing and exchangeable boxes (5 NOS-Mini-LRUs) hosting segregated aircraft applications assigned to either Aircraft Control Domain (ACD) or Aircraft Information Service Domain (AISD).

Main electronic boards manage the external interfaces and power distribution for NOS-Mini-LRUs. NOS satisfies both space and functional constrains based on the FPGA technology.


Key features

  • Board design oriented to qualification test.
  • Arinc 600 communication interface
  • Arinc 429 data bus
  • Power Management – NOS
  • Power to mini LRU (5Vdc, 12Vdc, 28Vdc)
  • Total power 90W
  • SPI (Short power Interruption): Protection in case of power failure.
  • One FPGA plus external Control CPU


  • Ethernet, GPIOs. Arinc429
  • Interface: PHY, magnets

Methodology Used (Design, Development and Manufacturing)

  • Agile methodology
  • MENTOR for HW design
  • Rapid prototyping


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