Portable USB Interfaces

USB 708 - USB 2.0 Avionics Interfaces for ARINC 708

The Easy Avionics Interface

These pocket-sized USB adapters are the easy and portable way to interface your computer to ARINC 708 and similar weather radar databuses.

Key Features

  • Up to 4 ARINC 708 Channels
  • 8 Avionics Discrete I/O
  • IRIG A/B PWM and AM
  • USB 2.0 Bus Powered—No External Power Supply Needed
  • 32 MB Data Memory
  • RoHS Compliant Design
  • Standard Black or Flight Test Orange Case
  • Small, Portable, and Rugged
  • Boards also available without enclosure for embedded use


  • Weather radar, CDU, and T-R unit analysis, test, and simulation
  • Flightline and AOG Support
  • Replacing Plug-in Cards
  • Many More Uses in the Lab or in the Field

There is a newer version of this product available:

UA2000 USB 3.1 Interfaces

Astronics ARINC 708 Radar
USB 708 Interfaces

Powerful 708 Interfaces

The USB 708 family of pocket-sized USB adapters enable computers to interface with ARINC 708 and similar weather radar display databuses. These rugged USB 2.0 peripherals feature extensive functionality for testing and simulating weather radar systems, CDUs (Control-Display Units), and T-R (Transmit-Receive) units. They are used for monitoring, generating, recording, and playing back data. The ARINC 708 display databus is sometimes referred to as ARINC 453.

These versatile interfaces are suitable for a wide range of applications in the lab and in the field, and are compatible with virtually all modern PC laptop, desktop, and tablet computers. They support maximum data throughput on all 708 channels and have a large 32 MB built-in memory. All power necessary for operation is provided via the single USB port. Plug and Play and Hot Swap features make them easy to install and move between computers.


Models are available with one receive and one transmit channel (1R1T) or with two receive and two transmit channels (2R2T). They support simultaneous operation on all available channels and provide software-selectable word lengths and pre-sync pulses to support custom protocols that deviate from ARINC 708. All include eight avionics level input/output discretes and IRIG time synchronization/generation. Once configured, the USB hardware performs all the protocol processing. It manages the reception, transmission, error checking, time-tagging and buffering of messages—freeing your software to focus on high-level application-specific processing.


Develop software applications with the included BTIDriver API, or use Astronics' optional CoPilot software. CoPilot provides powerful, easy-to-use interactive tools for databus test, analysis, and simulation.

ARINC 708 functionality

  • Supports standard ARINC 708 and custom weather radar databuses
  • Receive, Transmit, and Monitor
  • Models available: 1R1T and 2R2T
  • Direct coupled channels per 708
  • Strappable on-board termination
  • LEDs indicate bus traffic and errors

Similar Products

Other portable USB Interfaces are also available with different protocol and software options. Click on the following links for more information:


  pdf-icon  Datasheet
  Download  Manuals, Drivers, etc.


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ARINC 708 Interface

  • Standard ARINC 708 data
     - Syncs - beginning and ending
     - 1600 bits per word (64-bit header, 512 3-bit range bins)
  • Custom data options
     - Pre-sync pulses
     - Variable word length (1 to 1856 bits per word)
  • Configurable bit order (LSB or MSB first)
  • Strappable bus termination
  • ARINC 453 characteristics

ARINC 708 Channel Details

  • Internal self-test bus
  • Each channel switchable between 2 buses
  • Receive and transmit concurrently

Standard Features

  • USB 2.0 interface
  • 8 Avionics Discrete I/O
  • IRIG A/B input and output
  • 2 LED indicators
  • 32 MB on-board memory


  • Component temperature: -40 to + 85 deg C
  • Storage temperature: -55 to +100 deg C


  • Dim: 3.0 x 4.45 x 0.97 inch (76 x 113 x 25 mm)
  • Weight: under 5 oz (140 g)
  • I/O Connector: HD44F D-Sub
  • Secure locking connectors
  • Power: Single USB Port
  • MTBF: 1,500,000 hours



Ordering Information

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

ProtocolChannelsHardware & CoPilot*Hardware Only
ARINC 7082R2TCP-UA1720UA1720
ARINC 7081R1TCP-UA1710UA1710

*Includes CoPilot analysis & test software
nRnT = number of Receive/Transmit channels


To order options, add the appropriate suffix to the end of the part number.
Example: CP-UA1720/FTO

  • /FTO - Flight Test Orange case in place of the standard black case
  • /NE   - No Enclosure, Printed Circuit Board Assembly only, for embedded use
  • /FXY - Conformal coating (Parylene)

Cables & Accessories

The following accessories are included with all models except /NE versions:

  • USB-A cable with screw-locks (5 ft)
  • Mating HD44P D-Sub I/O connector
  • Software CD

A wide variety of cables and accessories are also available to complement Astronics' line of avionics databus interface products.

Find out more about Cables and Accessories.