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3U OpenVPX Sensor Interface Unit - SIU36

Configure with up to 18 I/O and Communication Function Modules

The SIU36 is a highly configurable rugged system or subsystem ideally suited to support a multitude of Mil-Aero applications that require high-density I/O, communications, Ethernet switching and processing. The SIU36 leverages NAI’s 3U boards to deliver off-the-shelf solutions that accelerate deployment of SWaP-optimized systems in air, land and sea applications.

Versatile & Scalable Rugged Architecture for Demanding Embedded System Applications Including: Data Acquisition (DAQ), Fire Control & Targeting System (FCTS), Remote Data Concentrator (RDC), Vehicle Management System (VMS) Data Concentrator Unit (DCU), Remote Interface Unit (RIU), Health and Usage Monitoring System (HUMS), Aircraft Interface Unit (AIU)

  • 6x 3U OpenVPX™ Card Slots, Supports up to 18 from 70+ smart function modules
  • 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
  • Configurable I/O Communications and Processing
  • COTS/NDI Sense & Response system
  • Reduced SWaP Footprint
  • Conduction Cooled (CC) or Air (AC) Cooled Versions
  • COSA® Architecture Supports MOSA, OSA, SOSA™ and the FACE™ technical standards
  • Wind River VxWorks®, Xilinx PetaLinux, Microsoft Windows® and DDC-I Deos® OS support
  • Continuous Background Built-In-Test (BIT) (board/function supported as applicable)

  • Operating Temp:: -40ᵒ C to +71ᵒ C @ thermal interface, conduction cooled; Air/convection-cooled version
  • Environmental/EMI: MIL-STD-461*, MIL-STD-810, MIL-STD-1275 & MIL-STD-704
  • Conduction Cooled Dimensions: 9” x 9” x 5.1”
  • Air Cooled Dimensions: 9” x 9” x 6.4” (Includes bottom mounting flanges but does not include connectors)
  • Conduction Cooled Weight: ~11.7 lbs.
  • Air Cooled Weight: ~12.7 lbs.
  • Additional Weights: + ~2.2 lbs. for PSU + ~1.35 lbs. each additional fully populated board
  • Input: 28 VDC input
  • Power is configuration dependent: 50 W typ. (up to 150 W capable) 50 ms (min.) PSU hold-up option
Block Diagram

(Click diagram to enlarge)

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Accelerate Your Time-to-Mission™ With COSA®

NAI’s Configurable Open Systems Architecture™ (COSA®) offers a choice of over 70 smart I/O, communication, and Ethernet switch functions, providing the highest packaging density and greatest flexibility of any multifunction I/O board in the industry. Preexisting, fully-tested functions can be combined quickly and easily in an unlimited number of ways. Each I/O function has dedicated processing, unburdening the system Single Board Computer (SBC) from unnecessary data management overhead.

Related COSA® Products
Just How Configurable Are NAI's COTS Systems?

Need more or less configurations than the SIU36? Choose from NAI's standard COTS configurable systems that you can populate with pre-integrated boards, smart function modules, power supplies and software libraries of your choice.

Model Dimensions w/ Connectors
(w x h x d)
Weight / lbs.
(Fully populated)
Function Module
Board Slots Board Formats
NIU1A 6.8” x 1.5” x 2.5” < 1.2 1 N/A Integrated System
NIU2A 7.0” x 3.0” x 2.5” < 2.75 2 N/A Integrated System
NIU3A 7.2" x 5.65" x 3.25" < 5.4 3 N/A Integrated System
NIU3E 7.2" x 6.6" x 3.0" < 6 1 N/A Integrated System
SIU31 4.71” x 2.35” x 8.71” < 5 3 1 cPCI
9.4” x 5.7” x 3.9” < 11 6 2 OpenVPX
SIU33 4.71” x 4.78” x 8.71” < 10 9 3 cPCI
SIU33V 4.71” x 4.78” x 8.71” < 10 9 3 OpenVPX
SIU34 9.4” x 5.7” x 5.9” < 16 12 4 OpenVPX
SIU35 7.13” x 4.76” x 8.71” < 15 15 5 cPCI, OpenVPX
SIU36 7.13“ x 4.71“ x 8.91“ < 23 18 6 OpenVPX
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