This paper introduces the function and characters of GPIB interface system.
介绍了GPIB接口系统的功能及特点。
Taking appropriative train test line of Guangzhou metro line 2 as an example, this paper introduces the equipment, function and characters of signal system and service conditions of interfaces.
以广州地铁2号线的专用试车线为例，分析其信号系统的设备概况、功能及特点，介绍各接口的使用情况。
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