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ARINC 429 Interface

Interface to the ARINC 429 avionics data bus

With the ARINC 429 Interface you can connect a dSPACE system to the ARINC 429 avionics data bus. So you can test aircraft electronics and develop new control functions for a wide range of applications in aircraft.

Application Areas

The ARINC 429 Interface is used to connect PHS-based dSPACE simulators and prototyping systems to the ARINC 429 avionics data bus. It allows for dSPACE HIL simulators to be used for testing aircraft electronics, at both the subsystem and the complete-vehicle level (Integrated Flight Testing facilities), and PHS-based dSPACE prototyping systems to be used for developing new control functions in areas such as engine management (FADEC), flight surface actuation, guidance, and navigation.

Key Benefits

  • Easy configuration of each IP module via a setup block
  • Data manipulation blocks
  • Supports advanced testing by inducing predefined errors in a message
  • Full software support for applications handcoded in C

Hardware and Software

The interface consists of the IndustryPack (IP) module carrier board DS4501 and the IP-429HD-44P module from GE Intelligent Platforms. On the real-time model side, a Simulink block library and S-functions are provided to access the IP module and its receive and transmit channels. The block library provides access to the ARINC 429 bus on raw value level, i.e., transmit and receive blocks in the model work with 32-bit ARINC 429 words without distinguishing between data bits. 

ARINC 429 Bus

The ARINC 429 specification defines how avionics equipment and systems should communicate with each other. It is an industry standard that is used on virtually all commercial aircraft. The resulting bus system is the most commonly used data bus for commercial and transport aircraft. It employs unidirectional transmission of 32-bit words over two twisted-pair cables. Messages are transmitted at a bit rate of either 12.5 or 100 kilobits per second to other system elements that monitor the bus messages. It supports one transmitter and up to 20 receivers per channel.

Parameter Specification
  • Up to 4 ARINC 429 IP modules supportedn
  • receive and 8 transmit channels per module
  • Adjustable receiver thresholds and transmitter output voltages
  • Automatic slew rate adjustment
Receive features Data rates
  • 12.5 kbit/s
  • 100 kbit/s
Standard input levels
  • ±6.5 to ±13 VDC
Parametric threshold levels
  • ±0.1 to ±13.5 VDC (A to B)
Transmit features Data rates
  • 12.5 kbit/s
  • 100 kbit/s
Standard output level
  • ±10 VDC (A to B)
Parametric output voltages
  • 0 to ±10 VDC (A to B)
  • Adding a scaling factor based on the data format type to increase the resolution of the 19-bit data of a 32-bit ARINC word
Transmission rates
  • Multiple transmission rates for multiple labels
Error injection
  • Supports BCHI, BCLO, GAP error injections per channel and PARITY error injection per label
Failure simulation
  • Label failure simulation by enabling/disabling labels during run time
Supported standards
  • IndustryPack™
  • ARINC 429
Host interface
  • One 8- or 16-bit ISA slot (power supply only)
Physical characteristics Physical size
  • Full-length ISA board
Ambient temperature
  • 0 ... +70 °C (32 ... 158 °F)
Power supply
  • +5 V ±5%, 36 mA (plus 77 mA per IP module)
  • ±12 V ±5%, 11 mA per IP module



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