FlexMobile 429+

Small and portable

ARINC 429 and Discrete

USB and Ethernet

Advanced and Lightweight ARINC 429 and Discrete Device

The FlexMobile 429+ is a lightweight and portable device that supports ARINC 429 and Discrete, with precise timing and flexible programming. It comes with various ARINC 429 options, 28V open-collector Discrete Inputs/Outputs with software-selectable directions and Ethernet/USB connectivity. It also has extensive error injection and detection capabilities, 10 ns timing accuracy, and support for various software interfaces such as Multibus, MX-Foundation 4 API, MAXIM GUI, and MAXIM Air GUI. The device also supports synchronization with other FlexMobile devices and IRIG-B Sync.

Additionally, the FlexMobile 429+ also includes an option including 4 Tx with parametric voltage up to +/- 6.5V per pin, giving users even greater flexibility in their programming.

The FlexMobile 429+ allows users to operate the device on the go by connecting it to any USB laptop, or remotely using Ethernet connectivity, providing convenient and flexible options for testing and analysis.

FlexMobile 429+


  • 4 Tx + 4 Rx of ARINC 429
  • 16 Discrete I/Os, open collectors supporting 28V Avionics levels

  • Ethernet
  • USB
  • Stand Alone
  • IRIG-B

FlexMobile 429+


  • 8 Tx + 8 Rx of ARINC 429
  • 16 Discrete I/Os, open collectors supporting 28V Avionics levels

  • Ethernet
  • USB
  • Stand Alone
  • IRIG-B

FlexMobile 429+


  • 8 Tx + 8 Rx of ARINC 429
  • 4 of the Tx channels are voltage selectable, up to 6.5V per pin.
  • 16 Discrete I/Os, open collectors supporting 28V Avionics levels

  • Ethernet
  • USB
  • Stand Alone
  • IRIG-B


Bus type

  • Ethernet, RJ-45 connector, 10/100/1000 Mbps


  • SYNC IN/OUT: Synchronization between multiple Flex devices
  • IRIG-B IN/OUT, Analog and TTL

Physical dimensions and weight

  • Height: 46 mm or 1.2 in
  • Width: 106 mm or 4.15 in
  • Depth: 165 mm or 7 in
  • Weight: 0.54 kg or 1.3 lbs

External connector type

  • ARINC 429, Discrete, SYNC and IRIG-B I/O: female HD-62
  • DC jack power input (plug and cable are provided)
  • Ethernet: RJ-45
  • USB type A (cable is provided)


  • Standard Operating Temperature: 10°C to 35°C
  • Storage Temperature: -25°C to 45°
  • Relative Humidity for operation: 0 to 90% (non-condensing)


  • Line voltage: 100-240V AC
  • Frequency: 50Hz to 60Hz

Power consumption

  • Idle power: 8 W
  • Power consumption max: 13 W


  • Bit rate from 4 to 125 kbps
  • Error injection (Parity and Bit count) and detection (Parity)
  • Prog. voltage 0-13V (P/N FMOB-A844-P-U only)

Choices of host interfaces


The FlexMobile 429+ instruments can be controlled using Ethernet, allowing distributed devices on a LAN to be accessed by client computers on the network. Also, you can setup a network with a Wi-Fi hub and access the FlexMobile 429+ device wirelessly.


The FlexMobile 429+ instruments can also be controlled using USB 2 or USB 3. USB is the most common desktop and laptop port that you’ll see. This is the most straight forward choice for working on the go (Field Applications).

MX Foundation 4 API

The MX Foundation API library provides high-level abstraction of hardware and allows to easily control mixed protocols and I/O modules on one or multiple carrier boards. MX Foundation is available for Windows, Linux and other operating systems. Read more…

Leveraging the FlexMobile 429+ in LabVIEW with Multibus VI

Multibus VI is a powerful and easy-to-use software tool that enables you to develop and debug avionics systems using ARINC 429 and other protocols. By pairing the FlexMobile 429+ with Multibus VI, you'll have a complete solution for designing, simulating, and testing your avionics systems with confidence. With LabVIEW’s intuitive graphical user interface and extensive set of features, Multibus VI makes it easy to create scenarios and perform analysis of your system's performance.

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