U1713 - convert ARINC 429, ASCB, analogs and more


Digital Interface Module

The U1713 is a Line Replaceable Module with a fast processor which is programmed at a very low-level. Core Drivers provide basic IO interfaces through the ports, enabling speedy development of the Hosted Application.

There are endless use cases:
  • convert ARINC 429 to ASCB to install an AHRS
  • use the U1713 as an Engine Data Concentrator, receive tachs and temperatures and output the data on ARINC 429
  • record flight data for Flight Operations Quality Assurance (FOQA)
  • adapt new avionics to resolve obsolesce of existing equipment
The U1713 makes anything avionics talk to anything avionics.

Canaan Avionics offers loaner equipment and blue/red label configurations to get your STC started easy and fast. We help you reverse engineer, develop the requirements, and cross the finish line –


The most ports in the smallest package. A total of 104 Pins, plus a 44 Pin Daughter Card for additional ports.

A429_RX/TX - ARINC 429 ports supporting all 256 labels, all 4 SDI's at high or low speed. Can perform simple conversions or support additional protocols such as ARINC 702 or ARINC 615 dataload.

ASCB - Honeywell Avionics Standard Communications Bus (ASCB) versions A/B/C. These ports also support other Honeywell formats such as Radio System Bus (RSB).

SIGNAL_IN - Multi-purpose inputs capable of receiving Gnd/Open, 28v/Open, Frequency Counters, and 12-Bit Analog Inputs.

GND_DISC_OUT - GND/Open outputs capable of driving annunciators or relays. Some output pins can double as GND/Open pin.

V_DISC_OUT - High-side discrete output for superflags or running low current switches and relays.

ANALOG_IN - Extremely accurate 24-bit isolated analog inputs, with a configurable pre-amp. Accurate for -5-40v, but also configurable for fine readings from temp sensors and 150mA deviations.

RS232_RX/TX - Serial COM ports, except designed to withstand aircraft-level HIRF & lighting.

RS422_RX/TX - Isolated RS422 UARTS that can support aircraft protocols such as CSDB or configured as RS485. Depending on the network, these ports may be configured for CAN bus.

AC_SIGNAL_OUT - Transformer-coupled function generator outputs capable of driving phase-shifted signals (such as sychro's or ARINC 407), or amplitude signals (such as Roll Steers 393mV/deg).

DC_SIGNAL_OUT - Program-able Digital-to-Analog (DAC) for producing DC signals.

FREQ_COUNTER - High Frequency counting inputs. The SIGNAL_IN have frequency-counting capability (good for ~2kHz), but the FREQ_COUNTER inputs are intended for input rates in hundreds of kHz, such as those needed for counting jet engine tach signals.

note: Provisionally the U1713 intends to implement other protocols such as Ethernet, ARINC 664/AFDX, MIL-STD-1553. If you don't see the protocol you need, just let us know.


Dimensions - 5.7 x 4.0 x 1.1" (see the model in downloads)

Weight - 0.85 lbs

Power Consumption - 110mA nominal @28vdc

TSO - C153A

Software DAL - DO-178C, DAL A

Environmental Qualification - DO-160G, categories for pressurized and non-pressurized environments in Part 25 aircraft.

Connectors - 104-pin Mil Spec DSub, with additional 44-Pin connector with an optional daughter board configuration.

Processor - 200 MHz ARM CPU - no complex devices, no operating system, no ASICs or FPGA, single core/thread


The configuration of the U1713 starts with a an email to us, describing what you're looking for. Sometimes all you need to tell us is what two [or more] systems you want to integrate and we can do the rest. We show up, provide a proof of concept, sometimes even provide a Blue Label Unit

The output of the configuration process is a host application and some application notes that describe in detail how the unit is installed and configured. Once a solution is identified, then the configuration can be certified. See the Cert Process to understand what the certification project most often looks like.