Research on Airborne Data Bus Test Method

Due to the advantages of high reliability, low delay, certainty, etc., military 1394B bus is used as the onboard data bus in aircraft such as F-35 and X-47B, which brings a new choice to the aircraft designer bus selection. For system designers, bus testing of onboard systems is critical and complete bus testing will guarantee system communication. This paper carries out related research according to the protocol of 1394B bus. In the test and test, start from the aspects of cable, physical layer, link layer, AS56643 protocol and application layer of military 1394B bus, and propose a wide-scale airborne data bus test method for other airborne data bus test reference.