Based on the background of the development of mixed wire carrier, this paper points out the problems which exists in the equipments used at present, and shows a design about automatically responsive testing system for mixed wire carrier. This system is designed in layers and has the feature of automatically response .This article discusses the role and the design principle of every layer in detail and the functions of this system is detected through simulation and field use.%结合目前混合线路载波技术的发展背景,针对目前混合线路载波中现场调试设备存在的问题,给出了一种自动应答式混合线路载波通道测试系统的研制方案.该方案采用分层思想设计,拥有自动应答的特点.详细阐述了系统每层的作用及设计思想,通过模拟和现场应用来检测系统的功能.
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