描述
信号源接地时,屏蔽层应在信号侧接地;不接地时,应在DCS侧接地;信号线中间有接头时,屏蔽层应牢固连接并进行绝缘处理,一定要避免多点接地;多个测点信号的屏蔽双绞线与多芯对绞总屏电缆连接时,各屏蔽层应相互连接好,并经绝缘处理,选择适当的接地处单点接地。要严格按DCS厂家的接地要求接地。
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