Fault diagnosis is the important compositive part of the whole ATC system, which is completed based on automatic test hardware and software, meanwhile, perfects the test system.

• 故障诊断系统是ATC自动测试系统的重要组成部分，故障诊断是在自动测试系统的硬件和软件基础上实现的，并且完善了自动测试系统。