信息技术设备的电磁兼容性标准.htm

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<body lang=ZH-CN link=blue vlink=blue style='tab-interval:21.0pt;text-justify-trim:
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<div class=Section1 style='layout-grid:15.6pt'>

<p align=center style='text-align:center'><strong>信息技术设备的电磁兼容性标准</strong><span
lang=EN-US><o:p></o:p></span></p>

<p>　　自<span lang=EN-US>80年代以来，我国加快了制定电磁兼容性国家标准的步伐。1988年6月发布了与国际无线电干扰特别委员会的“CISPR22：1985”
等效的国家标准“GB9254 1988”，标准名称是《信息技术设备的无线电干扰极限值和测量方法》，并于1998年11月1日起实施。1993年该标准成为强制性国家标准。之后，考虑到标准的适用性与时效性，又根据第三版的
“CISPR22：1997” 对GB9254 1988进行了修改，实施日期为1999年12月1日。该标准自实施之日起替代GB9254 1988，但其中有关电信端口的内容滞后半年实施。该标准仍作为强制性标准执行。同期还发布了GB/T17618
1998《信息技术设备抗扰度限值和测量方法》，该标准等同于“CISPR24：1997” ，并作为推荐标准来实施，此两项电磁兼容性产品类国家标准的发布将为制定国内信息技术设备产品标准提供技术依据。<o:p></o:p></span></p>

<p><strong><span lang=EN-US>1.信息技术设备定义</span></strong><span lang=EN-US><o:p></o:p></span></p>

<p>　　信息技术设备是<span lang=EN-US>GB9254中最为重要的术语之一，它界定了该标准适用的范围。GB9254的3.1给出了明确的定义：<br>
<b><span style='color:red'>　　信息技术设备是同时满足条件 ( a ) 和 条件 ( b ) 的任何设备；</span><o:p></o:p></b></span></p>

<p style='margin-right:36.0pt;margin-left:36.0pt'><b><span lang=EN-US
style='color:red'>(a). 能对数据和电信消息，进行录入、存储、显示、检索、传递、交换或控制（或几种功能的组合）；该设备可以配置一个和多个通常用于信息传递的终端端口；</span><span
lang=EN-US><o:p></o:p></span></b></p>