ARINC PART 7. Product Overview. Avionics Interface Technologies. N. th Street. Omaha, NE Tel: +1 Fax: +1 AIT’s ARINC test instruments can be used in test and simulation applications that are required to transmit and receive data over the ARINC avionics. Introduction. “Avionic Full-Duplex Switched Ethernet” (AFDX), designated. ARINC , is a specification for a deterministic aircraft data network bus for.

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Avionics Full-Duplex Switched Ethernet

The virtual 6644 ID is a bit unsigned integer value that follows a constant bit field. ARINC utilizes a unidirectional bus with a single transmitter and up to twenty receivers.

The switches are designed to route an incoming frame from one, and only one, end system to a predetermined set of end systems. Innovating together for the A XWB”.


In addition, AFDX can provide quality of service and dual link redundancy. This page was last edited on 10 Novemberat Sub-virtual links are assigned to a particular virtual link. Through the use of twisted pair or fiber optic cables, full-duplex Ethernet uses two separate pairs or strands for transmitting and receiving the data.

Archived copy as title All Wikipedia arind needing clarification Wikipedia articles needing clarification from September Real-time solution on the A” PDF.


A data word consists of 32 bits communicated over a twisted pair cable using the bipolar return-to-zero modulation. By adding key elements from ATM to those already found in Ethernet, and constraining the specification of various options, a highly reliable full-duplex deterministic network is created providing guaranteed bandwidth and quality of service QoS.

AgustaWestland asserts its independence in the cockpit”. This is the maximum rate data can be sent, and it is guaranteed to be sent at that interval.

AFDX was developed by Airbus Industries for the A, [3] initially to address real-time issues for flight-by-wire system development.

Further a redundant pair of networks is used to improve the system integrity although a virtual link may be configured to use one or the other network only. Data are read in a round-robin sequence among the virtual links with data to transmit.

Virtual links are unidirectional logic paths from the source end-system to all of the destination end-systems.

However, the number sub-VLs that may be created in a single virtual link is limited to four. However, total bandwidth cannot exceed the maximum available bandwidth on the network. AFDX is a worldwide registered trademark by Airbus. Archived from the original PDF on AFDX extends standard Ethernet to provide high data integrity and deterministic timing. This type of network can significantly reduce wire runs and, thus, the overall weight arihc the aircraft.


Each switch has filtering, policing, and forwarding functions that should be able to process at least VLs. Therefore, in a network with multiple switches cascaded star topologythe total number of virtual links is nearly limitless. Bi-directional communications must therefore require the specification of a complementary VL. Also the switch, having a VL configuration table loaded, can reject any erroneous data transmission that may otherwise swamp other branches of the network.

This ADN operates without the use of a bus controller thereby increasing the reliability of the network architecture. Retrieved May 28, From Wikipedia, the free encyclopedia. ARINC operates in such a way that its single transmitter communicates in a point-to-point connection, thus requiring a significant amount of arind which amounts to added weight. AFDX was designed as the next-generation aircraft data network.

Avionics Full-Duplex Switched Ethernet – Wikipedia

Webarchive template wayback links CS1 maint: However, some features of a real AFDX switch may be missing, such as traffic policing and redundancy functions. The architecture adopted by AgustaWestland is centered around the AFDX data network developed for the latest commercial airliners.

The drawback is that it requires custom hardware which can add significant cost to the aircraft.