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3U OpenVPX Sensor Interface Unit

Configure with up to 6 I/O and Communication Function Modules

The SIU32S is a highly configurable Modular Open Systems Approach (MOSA) rugged system or subsystem ideally suited to support a multitude of Mil-Aero applications that require high-density I/O, processing, communications and Ethernet switching. The SIU32S leverages NAI’s Configurable Open Systems Architecture™ (COSA®) 3U boards and smart function modules 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)

  • 2x 3U OpenVPX™ Card Slots, Supports up to 6 I/O and/or communication modules with 100+ smart function modules to choose from
  • Processor Options: Freescale PowerPC™ QorIQ® T2080, Intel® Core™ i7 or ARM® Cortex®-A9 & -A53
  • Configurable I/O Communications and Processing Capabilities
  • Reduced SWaP Footprint
  • Conduction Cooled (CC) and Air Cooled (AC) 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: -40 °C to +71 °C @ thermal interface, conduction cooled
  • Environmental/EMI: MILS-STD-461, MIL-STD-810, MIL-STD-1275, MIL-STD-704
  • Conduction Cooled Dimensions: 5.9" x 4.5" x 9.5"
  • Conduction Cooled Weight: < 8.7 (unpopulated - includes ~2.2 lbs. for PSU ), < 11.5 (fully populated)
  • Additional Weights: + ~1.35 lbs. each additional fully populated board
Block Diagram
9/6/2023 10:16:29 AM
Accelerate Your Time-to-Mission™ With COSA®

NAI’s Configurable Open Systems Architecture™ (COSA®) offers a choice of over 100 smart I/O, communication, and Ethernet switch functions, providing the highest package 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. Choose the ideal platform for your application below. 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 SIU32S? 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 1.6" x 2.5" < 1.2 1 N/A Integrated System
NIU2A 7.2" x 2.7" x 3.0" < 2.7 2 N/A Integrated System
NIU3A 7.2" x 3.2" x 5.5" < 5.4 3 N/A Integrated System
NIU3E 7.2" x 3.2" x 7.1" < 7.7 1 N/A Integrated System
SIU31 4.7"x 2.4" x 8.8" < 5.9 3 1 cPCI
SIU32S 5.9" x 4.5" x 9.5" < 11.5 6 2 OpenVPX
SIU33 4.7" x 4.8" x 8.8" < 10.6 9 3 cPCI
SIU34 5.7" x 5.8" x 9.4" < 15.1 12 4 OpenVPX
SIU35 7.2" x 4.8" x 8.7" < 16.0 15 5 cPCI
SIU36 Conduction Cooled: 9.0" x 5.0" x 9.5"
Convetion/Air Cooled: 9.0" x 6.4" x 9.5"
Conduction Cooled: < 21.3
Convection/Air Cooled: < 22.5
18 6 OpenVPX
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