Portable USB Interfaces

USB Multi - USB 2.0 Avionics Interfaces for Multiple Protocols

One Tool Does It All!

These pocket-sized USB adapters are the easy and portable way to interface your computer to multiple avionics databuses including: MIL-STD-1553, EBR 1553, ARINC 429, ARINC 708, ARINC 717, Serial, and Discrete I/O.

Key Features

  • Interface USB to Multiple Avionics Databus Protocols with a Single Unit
  • 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
Astronics USB Multi Avionics Interface


  • Databus Analysis, Test, and Simulation
  • Data Loading
  • Flightline and AOG Support
  • Replacing Plug-in Cards
  • Many More Uses in the Lab or in the Field

USB Interfaces to Multiple Simultaneous Avionics Protocols

The USB MULTI family of pocket-sized USB adapters enable computers to communicate with, simulate, test, and monitor avionics equipment and systems.

These rugged USB 2.0 peripherals feature a combination of different protocols in a single device. This provides greater convenience and cost savings when interfacing to multiple databus types. They are compatible with virtually all modern PC laptop, desktop, and tablet computers, and 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.

Astronics USB Multi System Diagram


  • Small, lightweight, and rugged
  • Portable, versatile, and durable
  • Easy Plug and Play installation
  • No external power supply needed
  • Powerful protocol engines
  • Secure locking connectors
  • Free customer support for product life
  • 3-year limited warranty standard
  • FCC, CE and RoHS compliant

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.


Get More Information

For more information or to request a quote, fill out the form below or call us at:


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Avionics Interfaces

  • MIL-STD-1553
    1 dual-redundant channel
    BC/RT/MON (single or multi-Function)
  • ARINC 429/575
    6 channels (4R/2T)
  • ARINC 708/453
    2 channels (1R/1T)
  • ARINC 717/573
    4 channels (2R/2T)
  • Differential Discretes
    Up to 4 differential discrete I/O
  • EBR 1553 (SAE AS5652)
    Up to 4 ports (1 channel)
    BC/RT/MON (multi-function)
  • RS-422/485
    Up to 4 ports
  • Avionics Discrete I/O
    All models include 8 avionics discrete I/O

Higher Channel Counts

Single-protocol USB interfaces are available with higher individual channel counts. Click the desired product for more information:

Standard Features

  • Model dependent protocol capability
  • USB 2.0 interface
  • 8 Avionics Discrete I/O
  • Up to 4 Differential 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: 1,400,000 hours



Ordering Information

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

MIL-STD-1553ARINC 429ARINC 708ARINC 717EBR 1553SerialHardware & CoPilot*Hardware Only
1 Multi-function4R2T----CP-UA1531UA1531
1 Multi-function4R2T-2R2T--CP-UA1532UA1532
1 Multi-function4R2T---4 portsCP-UA1533UA1533
1 Multi-function----4 portsCP-UA1534UA1534
1 Multi-function---4 ports-CP-UA1535UA1535
1 Single-function4R2T----CP-UA1521UA1521
1 Single-function4R2T-2R2T--CP-UA1522UA1522
1 Single-function4R2T---4 portsCP-UA1523UA1523
1 Single-function----4 portsCP-UA1524UA1524
1 Single-function---4 ports-CP-UA1525UA1525
1 Bus Monitor4R2T----CP-UA1511UA1511
1 Bus Monitor4R2T-2R2T--CP-UA1512UA1512
1 Bus Monitor4R2T---4 portsCP-UA1513UA1513
1 Bus Monitor----4 portsCP-UA1514UA1514
1 Bus Monitor---4 ports-CP-UA1515UA1515
-4R2T---4 portsCP-UA1503UA1503
-4R2T1R1T--4 portsCP-UA1573UA1573
--1R1T--4 portsCP-UA1574UA1574
----4 ports-CP-UA1505UA1505


*Includes optional CoPilot Test & Analysis Software at special bundled pricing
nRnT = number of Receive/Transmit channels

Multi-function Channels

Multi-function channels have protocol error injection capability and can simultaneously be a Bus Controller (BC), Bus Monitor (BM), and up to 32 Remote Terminals (RTs).

Single-function Channels

Single-function channels can be configured in software as either a Bus Controller (BC), a Bus Monitor (BM), or up to 32 Remote Terminals (RTs).


To order options, add the appropriate suffix to the end of the part number.
Example: CP-UA1532/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.