<div class="Section0" style="LAYOUT-GRID: 15.6pt none">
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">U/UTP双绞线:即通常所说的UTP双绞线,非屏蔽双绞线;</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> >>F/UTP双绞线:总屏蔽层为铝箔屏蔽,没有线对屏蔽层的屏蔽双绞线;</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> >>U/FTP双绞线:没有总屏蔽层,线对屏蔽为铝箔屏蔽的屏蔽双绞线;</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> >>SF/UTP双绞线:总屏蔽层为丝网+铝箔的双重屏蔽,线对没有屏蔽的双重屏蔽双绞线;</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-INDENT: 27pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">>>S/FTP双绞线:总屏蔽层为丝网,线对屏蔽为铝箔屏蔽的双重屏蔽双绞线。</span><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; TEXT-INDENT: 27pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">1. F/UTP屏蔽双绞线</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">铝箔总屏蔽屏蔽双绞线(F/UTP)是最传统的屏蔽双绞线,主要用于将8芯双绞线与外部电磁场隔离,对线对之间电磁干扰没有作用。</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><br/></span><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">F/UTP双绞线在8芯双绞线外层包裹了一层铝箔。即在8根芯线外、护套内有一层铝箔,在铝箔的导电面上铺设了一根接地导线。</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><br/></span><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">F/UTP双绞线主要用于五类、超五类,在六类中也有应用。</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><br/></span><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">F/UTP屏蔽双绞线有以下工程特点:</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> </span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">>>双绞线外径大于同等级的非屏蔽双绞线;</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> >>铝箔两面并非都是导电层,通常只有一面为导电层(即与接地导线连接的一面);</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> >>铝箔层在有缺口时容易被撕裂。</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> </span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">因此,在施工时应注意以下问题:</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><br/></span><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">>>铝箔层要与接地导线一起端接到屏蔽模块的屏蔽层上;</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> >>为了不留下电磁波可以侵入的缝隙,应尽量将铝箔层展开,与模块的屏蔽层之间形成360度的全方位接触;</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> >>当屏蔽层的导电面在里层时,应将铝箔层翻过来覆盖在双绞线的护套外,用屏蔽模块附带的尼龙扎带将双绞线与模块后部的金属托架固定成一体。这样,在罩上屏蔽壳后,无论是屏蔽壳与屏蔽层之间,还是屏蔽层与护套之间都没有留下电磁波可以侵入的缝隙;</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> >>不要在屏蔽层上留下缺口。</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> </span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">2.U/FTP屏蔽双绞线</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><br/></span><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">线对屏蔽双绞线(U/FTP)的屏蔽层同样由铝箔和接地导线组成,所不同的是:铝箔层分有4张,分别包裹4个线对,切断了每个线对之间电磁干扰途径。因此它除了可以抵御外来的电磁干扰外,还可以对抗线对之间的电磁干扰(串扰)。</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><br/></span><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">U/FTP线对屏蔽双绞线来自7类双绞线,目前主要用于六类屏蔽双绞线,也可以用于超5类屏蔽双绞线。</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><br/></span><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">在施工时应注意以下问题:</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> >>铝箔层要与接地导线一起端接到屏蔽模块的屏蔽层上;</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> >>屏蔽层应与模块的屏蔽层之间形成360度的全方位接触;</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> >>为防止屏蔽双绞线中的芯线和屏蔽层受力,应在双绞线的护套部位,用屏蔽模块附带的尼龙扎带将双绞线与模块后部的金属托架固定成一体;</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> >>不要在屏蔽层上留下缺口。</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><br/></span><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> </span><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><br/></span><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">3.SF/UTP屏蔽双绞线</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> </span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">SF/UTP屏蔽双绞线的总屏蔽层为铝箔+铜丝网,它不需要接地导线作为引流线:铜丝网具有很好的韧性,不易折断,因此它本身就可以作为铝箔层的引流线,万一铝箔层断裂,丝网将起到将铝箔层继续连接的作用。</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> </span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">SF/UTP双绞线在4个双绞线的线对上,没有各自的屏蔽层。因此它属于只有综屏蔽层的屏蔽双绞线。</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> </span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">SF/UTP双绞线主要用于五类、超五类,在六类屏蔽双绞线中也有应用。</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><br/></span><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">SF/UTP屏蔽双绞线有以下工程特点:</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><br/></span><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> </span><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><br/></span><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">>>双绞线外径大于同等级的F/UTP屏蔽双绞线;</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> >>铝箔两面并非都是导电层,通常只有一面为导电层(即与丝网接触的一面);</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> >>丝网中的铜丝容易脱离丝网,引起信号线短路;</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> >>铝箔层在有缺口时容易被撕裂。</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> 因此,在施工时应注意以下问题:</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> >>丝网层要端接到屏蔽模块的屏蔽层上;</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> >>铝箔层可以剪去,不参加端接;</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> >>为了防止丝网中的铜丝逸出组成芯线短路,在端接时应特别注意观查,不要让任何铜丝有向着模块端接点的机会;</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> >>将丝网层翻过来覆盖在双绞线的护套外,用屏蔽模块附带的尼龙扎带将双绞线与模块后部的金属托架固定成一体。这样,在罩上屏蔽壳后,无论是屏蔽壳与屏蔽层之间,还是屏蔽层与护套之间都没有留下电磁波可以侵入的缝隙;</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> >>不要在屏蔽层上留下缺口。</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><br/></span><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> </span><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><br/></span><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">4.S/FTP屏蔽双绞线</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> </span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">S/FTP屏蔽双绞线属于双重屏蔽双绞线,它是应用于7类屏蔽双绞线的线缆产品,也用于六类屏蔽双绞线。</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><br/></span><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">S/FTP屏蔽双绞线有以下工程特点:</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> >>双绞线外径大于同等级的F/UTP屏蔽双绞线;</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> >>铝箔两面并非都是导电层,通常只有一面为导电层(即与丝网接触的一面);</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> >>丝网中的铜丝容易脱离丝网,引起信号线短路;</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> >>铝箔层在有缺口时容易被撕裂。</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> 因此,在施工时应注意以下问题:</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> >>丝网层要端接到屏蔽模块的屏蔽层上;</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> >>铝箔层可以剪去,不参加端接;</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> >>为了防止丝网中的铜丝逸出组成芯线短路,在端接时应特别注意观查,不要让任何铜丝有向着模块端接点的机会;</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> >>将丝网层翻过来覆盖在双绞线的护套外,用屏蔽模块附带的尼龙扎带将双绞线与模块后部的金属托架固定成一体。这样,在罩上屏蔽壳后,无论是屏蔽壳与屏蔽层之间,还是屏蔽层与护套之间都没有留下电磁波可以侵入的缝隙;</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> >>不要在屏蔽层上留下缺口。</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><br/></span><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">5.其他种类的屏蔽双绞线</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> 屏蔽双绞线除以上种类外,还有丝网总屏蔽双绞线(STP)、双层铝箔双绞线(F2TP)、双层铝箔线对屏蔽双绞线(F/FTP)、双重总屏蔽+线对屏蔽双绞线(SF/FTP)等等。</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"> 由于这些双绞线没有列入国际布线标准(ISO</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p15" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt; LINE-HEIGHT: 150%"><span style="FONT-SIZE: 13.5pt; COLOR: rgb(255,0,0); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'">11801-2002),且工作原理可以通过前述四种屏蔽双绞线演变产生,因此它们的施工特点可以进行类推。为减少篇幅,在本文中不进行一一描述。</span><span style="FONT-SIZE: 9pt; COLOR: rgb(51,51,51); FONT-FAMILY: '宋体'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p0" style="MARGIN-TOP: 0pt; MARGIN-BOTTOM: 0pt"><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New="New" Roman'; mso-spacerun: 'yes'"><o:p></o:p></span></p></div><!--EndFragment--> |
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