Developing and Testing Networked Avionics Systems and Devices
By: Troy Troshynski
Today’s commercial and military aircraft heavily leverage avionics-specific data bus technologies, as well as new communications network technologies based on common data networking protocols. From MIL-STD-1553 and ARINC 429, to ARINC 664/AFDX, the functioning of the on-aircraft communications systems and each device connected to them is critical to the reliability and safety of these aircraft and their missions. This article presents an overview of some of the most common avionics network and data bus technologies, presents key features required to support test applications and examines some off-the-shelf PXI test instruments that provide support for these key features.