OmniBus II - PXIe Avionics Interfaces for Multiple Protocols

Flexible Multi-protocol Interfacing

OmniBus II PXIe cards, part of of the Omnibus family, enable computers to interface with multiple avionics databuses with flexible, modular I/O choices.

Key Features

  • Compatible with both PXIe and CompactPCI Express (cPCIe) test systems
  • PXI triggers/syncs/clocks
  • Advanced timing: IRIG, 10 MHz, and PPS
  • Built-in test: PBIT, IBIT and CBIT


  • Product development and validation
  • Production testing
  • Simulation of databus and I/O system traffic
  • Data servers
  • Data recorders
  • System analysis and integration testing
  • Performance monitoring and analysis
Astronics OmniBus PXIe Card
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Multi-Protocol Avionics Databus Interface

The OmniBus II PXI Express (PXIe) card is designed for use in multi-slot PXIe and CompactPCI Express test systems. It enables these systems to interface with multiple avionics databuses for testing, validating and simulating commercial and military avionics equipment and systems. The card is highly configurable and includes two internal Cores that can be populated with a variety of databus protocols and discrete I/O modules.

The OmniBus II PXIe is the next-generation of Astronics' popular OmniBus product with faster I/O and processing capabilities. With the newest advanced set of MIL-STD-1553 and ARINC 429 modules, users can verify wave form compatibilities, test functions of bus shorts and opens, and—when combined with our CoPilot® software—perform lab, production and flight test verification and simulation right out of the box. Readily available as Commercial Off-The-Shelf (COTS) products, the PCIe interface is perfect for challenging simulation, test, interface, and data recording applications.


OmniBus II modules used on this card feature the latest 6th generation protocol engines and bus mastering to yield high performance. Power is obtained from the backplane bus—no supplemental power is needed. All cards are standard 3U size and include sixteen TTL level input/output discretes and IRIG time synchronization/generation. User software can indicate status by controlling the two LEDs.


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Modular Avionics Interfaces

Each Omnibus II product includes an array of functional features to which I/O is added through the use of interchangeable modules. When ordering an OmniBus product, you can add the combination of modules to get the exact mix of I/O you need. Each OmniBus product can accept at least two modules, and each module has its own circuitry to handle the channels and protocols associated with it.

Astronics OmniBus II I/O Modules

Available Interfaces

  • MIL-STD-1553 - Up to 2 dual-redundant, single- or multi-function channels per module
  • ARINC 429 - Up to 16 Tx/Rx configurable channels per module; advanced ARINC 429 modules are also available with added test features
  • ARINC 717 - Up to 4R/4T channels per module
  • ARINC 708 - Up to 2R/2T channels per module
  • Serial - Up to 4 Serial UARTs per module
  • Avionics Discrete I/O - 32 programmable Input/Output per module

Standard Features

OmniBus II PXIe is available in a large number of configurations that all share the standard features below:

  • 2 Core I/O sites
  • 8 bidirectional TTL discrete I/O per core
  • 2 user controlled LED indicators per core
  • 64 MB memory per core (ECC)
  • RoHS compliant


  • Component Temperature: -40 to 85°C
  • Storage Temperature: -55 to 100°C


  • Size: Standard 3U (100 x 160 mm)
  • I/O Connectors: LFH60
  • PCIe bus: x1 lane, bus mastering
  • Power: +3.3 and +12 VDC

Advanced Timing

  • 64-bit hardware time-tag (1ns resolution)
  • IRIG A/B input and output (AM, PWM)
    Generate or synchronize timer
    Synchronize hardware time-tags
  • 10 MHz and PPS
    Frame synchronization
    Synchronize hardware time-tags


  • Poll or use interrupts
  • Configurable event log
  • Programmable event logging/interrupts from messages, tx schedules, and buffers

PXI Triggers/Syncs/Clocks

  • PXI_STAR, PXI_TRIG, PXIe_DSTAR, and PXIe_CLK100 signals
  • Route PXI triggers to BTIDriver triggers & syncs
  • 3 syncs and 3 triggers per core
  • Integration to Advanced Timing functions


Ordering Information

For more information or to request a quote, call +1.425.339.0281 or complete the form above.