描述
主要考虑来自系统外部的几种抑制措施。主要内容包括:对DCS系统及外引线进行屏蔽以防空间辐射电磁干扰;对外引线进行隔离、滤波,特别是动力电缆应分层布置,以防通过外引线引入传导电磁干扰;正确设计接地点和接地装置,完善接地系统。另外,还必须利用软件手段,提高系统的安全可靠性。
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