Abstract: The software test system is one of the most important supporting tools for supporting the study and development of the high-performance software of distributed avionics system. This paper describes a distributed avionics software test system which adopts the numerical simulation technique to supply the data-environment and a monitor computer to record, save and analyze the test result automatically. This software test system is designed by adopting standardization, so it has a good maintainability and expansibility. Moreover, simple and effective supporting functions supply a good application environment to users. The test experiments show that this distributed avionics software test system is simple , effective and easy to use.In the last of this paper, a test example and its test method are described.

Key words: distributed avinocis system, software test, numerical simulation technique, monitor computer. 1553B bus