3U OpenVPX Sensor Interface Unit – SIU36

NAI’s SIU36 is a highly configurable rugged COTS system or subsystem ideally suited for military, industrial, and commercial applications that require high-density I/O, communication, Ethernet switching, and processing. The SIU36 uses up to six NAI field-proven, 3U OpenVPX boards to deliver off-the-shelf, SWaP-optimized COTS solutions that Accelerate Your-Time-to-Mission™.

Adaptable Architecture

NAI’s Configurable Open systems architecture offers a choice of over 70 intelligent I/O, communication and Ethernet switch functions, as well as single board computer (SBC) options. Preexisting, fully-tested functions can quickly and easily be combined in an unlimited number of ways to meet system requirements. Individually dedicated I/O and communication processors allow mission computers to manage, monitor, and control the functions via single or dual Ethernet ports. Alternately, select one of NAI’s 3U SBC options.

Software Support Kit (SSK)

If required, the SIU36 offers a choice of 3U OpenVPX processors: Freescale PowerPC™ QorIQ® T2080, Intel® Core™ i7, or ARM® Cortex®-A9 & -A53, enabling customers to choose their ideal SBC. Each SBC supports NAI’s COSA® architecture to maximize configurability, versatility, and field-proven reliability. Software support includes Wind River® VxWorks®, Xilinx® PetaLinux, Microsoft Windows® and DDC-I Deos®. All I/O and communication libraries are available.


  • 6 x 3U OpenVPX slots – for installation of up to 18 I/O and communication function modules
  • 70+ modules to choose from
  • Local or External SBC Host I/F capable
  • Processor options: Freescale PowerPC™ QorIQ® T2080, Intel® Core™ i7, or ARM® Cortex®-A9 & -A53
  • SBC-less, remote interface supported via Ethernet connection to your mission computer
  • Reduced SWaP
  • 7.13″ W x  4.78″ H x 9.39″ D
  • +28 VDC 50 ms hold-up option
  • Power is configuration dependant 50 W typ. (up to 150 W capable)
  • Configurable I/O Communications and Processing
  • COTS/NDI Sense & Response system
  • Wind River® VxWorks®, Xilinx® PetaLinux, and Microsoft Windows® and DDC-I Deos® OS support
  • Continuous Background Built-In-Test (BIT)
  • COSA® architecture
  • Aligned with MOSA, OSA, SOSA™ and the FACE™ technical standard
  • VICTORY Interface Services (contact factory)
  • Operating temperature: -40° C to +71° C @ thermal interface, conduction-cooled; convection & air-cooled options
  • MIL-STD-461F, MIL-STD-810, MIL-STD-1275, & MIL-STD-704 (A included)

Configured Applications Include:

  • Data Acquition (DAQ)
  • Fire Control & Targeting System (FCTS)
  • Remote Data Concentrator (RDC)
  • Vehicle Management System (VMS)
  • Data Conentrator Unit (DCU)
  • Remote Interface Unit (RIU)
  • Health and Usage Monitoring System (HUMS)
  • Aircraft Interface Unit (AIU)