diandao999 发表于 2007-7-9 09:59:30

夏季ADSL Modem防雷

<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;"></SPAN></FONT></P><SPAN lang=EN-US><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">夏天的雷雨天气也逐渐多了起来。作为一种电子产品的</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">,在这雷电日渐增多的日子里,会变得比较</SPAN><SPAN lang=EN-US>“</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">脆弱</SPAN><SPAN lang=EN-US>”</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">,如果不幸被雷电击中,严重的话可能会损坏设备,甚至损坏计算机主板。为了更好地保护</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">,提高网上冲浪的稳定性,让</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">远离雷电攻击应是当务之急。为何会遭受雷电攻击?</SPAN></FONT><SPAN lang=EN-US><BR></SPAN><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">一般情况下,用户使用</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">时,都有</SPAN><SPAN lang=EN-US>24</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">小时进行连接的要求,如此一来电话线与</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">设备之间,可能会长时间地保持连接。一旦在连接期间出现雷电天气,特别是雷电发生在电话线旁边时,那么由雷电引起的强电流,可能会感应带有微弱电信号的电话线,这样电话线上将有较高的电流产生,这种冲击性电流将会自动沿着电话线路,向连接在线路上的用户端设备流去。即使你此时没有打开计算机或使用</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">,该冲击电流还是会对设备产生影响,一旦该冲击电流的数值大于</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">设备的承受能力时,它就可能遭受到毁灭性的损坏。即使</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">设备没有被损坏,但受到雷击电流的冲击后,</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">设备内部工作电路的电气性能也会受到影响,从而导致稳定性下降,那么以后再用该设备上网时,就会经常出现掉线现象。</SPAN></FONT><SPAN lang=EN-US><BR></SPAN><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">提示:雷击感应电流是雷电发生时,由电话线的一头与大地之间的感应雷击电压引起的,当然电话线两头的雷击电压的差值,也会引发雷电感应电流。在引发</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">出现故障的雷电攻击中,前一种雷击方式占的比例很多。</SPAN></FONT><SPAN lang=EN-US><BR></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;"><FONT size=3>如何远离雷电攻击</FONT></SPAN><SPAN lang=EN-US><BR></SPAN><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">既然</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">设备在遭受雷电攻击时,轻则出现频繁掉线现象,重则导致</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">损坏,甚至计算机主板损坏,那么有没有办法,预防雷电攻击,让</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">远离伤害呢?</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US><FONT size=3>1</FONT></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;"><FONT size=3>、选购具有防雷功能的设备</FONT></SPAN><SPAN lang=EN-US><BR></SPAN></B><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">考虑到现在的</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">,都是针对</SPAN><SPAN lang=EN-US>24</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">小时在线服务的要求设计的,这就要求</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center><TABLE class=MsoNormalTable style="mso-cellspacing: 0cm; mso-table-lspace: 2.25pt; mso-table-rspace: 2.25pt; mso-table-anchor-vertical: paragraph; mso-table-anchor-horizontal: column; mso-table-left: left; mso-padding-alt: 0cm 0cm 0cm 0cm" cellSpacing=0 cellPadding=0 align=left border=0><TBODY><TR style="mso-yfti-irow: 0; mso-yfti-firstrow: yes; mso-yfti-lastrow: yes"><TD style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 0cm; BORDER-TOP: #d4d0c8; PADDING-LEFT: 0cm; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; PADDING-TOP: 0cm; BORDER-BOTTOM: #d4d0c8; BACKGROUND-COLOR: transparent"><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; mso-element: frame; mso-element-frame-hspace: 2.25pt; mso-element-wrap: around; mso-element-anchor-vertical: paragraph; mso-element-anchor-horizontal: column; mso-height-rule: exactly"><SPAN lang=EN-US><o:p>&nbsp;</o:p></SPAN></P></TD></TR></TBODY></TABLE></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none"><FONT size=3>ADSL</FONT></SPAN></A></SPAN><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">设备自身应具有防雷功能,这样你即使忘记了采取防雷措施,</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A></SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">设备也能自动启用防雷功能,避免遭受雷电攻击。当然市场上也有一些</SPAN><SPAN lang=EN-US>“</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">一次性</SPAN><SPAN lang=EN-US>”</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">防雷的</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">产品,这种产品只不过是在</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">内部的工作电路上增加了防止线路电压过大的保护装置,当电话线遭受雷电攻击时,该装置中的</SPAN><SPAN lang=EN-US>“</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">保险丝</SPAN><SPAN lang=EN-US>”</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">会自动断开。以后再次使用该</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">上网时,必须为这种保护装置更换</SPAN><SPAN lang=EN-US>“</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">保险丝</SPAN><SPAN lang=EN-US>”</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">。</SPAN></FONT><SPAN lang=EN-US><BR><B style="mso-bidi-font-weight: normal"><FONT size=3>2</FONT></B></SPAN><B style="mso-bidi-font-weight: normal"><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">、切断与</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN></FONT></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;"><FONT size=3>的连接</FONT></SPAN><SPAN lang=EN-US><BR></SPAN></B><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">最简便的防雷办法,就是在打雷时,及时将</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">与电话线之间的连接切断,这样雷击电流就无法</SPAN><SPAN lang=EN-US>“</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">碰</SPAN><SPAN lang=EN-US>”</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">到</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">,</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">自然也就不会受到攻击了。当然,在打雷时你一般是无法上网的,即使雷电不会对</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">造成损坏,也会在电话线中产生很大的噪音,特别是电话线与打雷区域距离越近,这种噪音就更强烈,它有可能会</SPAN><SPAN lang=EN-US>“</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">强制</SPAN><SPAN lang=EN-US>”<A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">掉线。</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT size=3><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US>3</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">、使用防雷保护装置</SPAN><SPAN lang=EN-US><o:p></o:p></SPAN></B></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">许多厂商为了降低成本,常常会简化或忽略</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">的防雷功能,这样一来就容易出现安全隐患。因此在使用这类没有防雷功能的</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">时,应该在</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">设备之前加装信号防雷器。比较简便的方法是直接选用具有</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">保护功能的高档接线板,这种接线板不但能够将高电压过滤掉,而且还能排除噪音干扰,确保稳定上网,目前市场上已经有这种接线板销售了,价格也比较便宜。此外,你也可以使用电话防雷器来保护</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">,不过这种防雷装置会对线路的稳定造成一定的影响。</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">提示:使用信号防雷器时,必须确保它可靠接地,而且在安装信号防雷器时,必须确保它的输入端与电话线相连,输出端与</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">相连。</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT size=3><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US>4</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">、养成良好的上网习惯</SPAN><SPAN lang=EN-US><o:p></o:p></SPAN></B></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">尽管不少</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">具有防雷功能,不过在雷雨季节,你千万不要太依赖它们,因为它们当中的大部分产品都是</SPAN><SPAN lang=EN-US>“</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">被动</SPAN><SPAN lang=EN-US>”</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">式防雷,只是在设备内部添加了几个简单的限流二极管或限流电阻,很容易被雷电击穿。因此,你应该养成良好的上网习惯。</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">这里所指的</SPAN><SPAN lang=EN-US>“</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">良好的上网习惯</SPAN><SPAN lang=EN-US>”</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">,就是指每次在冲浪结束后,都应该记住将</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">与电话线之间的物理连接断开,而不是在打雷时,才去断开连接。毕竟你无法做到,每次打雷时,都能够出现在</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">设备旁边。此外,还要注意尽量不要在雷雨天气,接通计算机或</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">的电源。</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT size=3><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US>5</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">、注意摆放位置</SPAN><SPAN lang=EN-US><o:p></o:p></SPAN></B></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">为了避免雷电影响到</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">,你应该确保该设备与外墙壁之间保持一定的距离,另外也不要让它靠近比较高的柱子。</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">通过上述内容,相信大家已对</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">的防雷问题,有了一个清晰的认识,尽管</SPAN><SPAN lang=EN-US><A target=_blank href="http://www.pcdog.com/network/special/s2.htm" target=_blank><SPAN style="COLOR: windowtext; TEXT-DECORATION: none; text-underline: none">ADSL</SPAN></A> Modem</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">遭受雷击的可能性不大,但你还是应该做好各种预防工作。</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><o:p><FONT size=3>&nbsp;</FONT></o:p></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center" align=center><FONT size=3>&nbsp;</FONT></o:p></SPAN></P>

wosswo 发表于 2008-4-28 14:00:56

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