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标题: [求助]继续请大家帮忙  [查看完整版帖子] [打印本页]

时间:  2007-9-16 16:39
作者: nbhal775     标题: [求助]继续请大家帮忙

<font color="#ee6911"><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; LINE-HEIGHT: 18pt; mso-pagination: none; tab-stops: 60.0pt;"><font color="#000000"><font face="宋体">一个</font><span lang="EN-US" style="FONT-FAMILY: Arial; mso-bidi-font-family: &quot;Times New Roman&quot;;">32</span><font face="宋体">波波分复用系统,</font><span lang="EN-US" style="FONT-FAMILY: Arial; mso-bidi-font-family: &quot;Times New Roman&quot;;">32</span><font face="宋体">波满配置时的</font><span lang="EN-US" style="FONT-FAMILY: Arial; mso-bidi-font-family: &quot;Times New Roman&quot;;">OBA</span><font face="宋体">盘输出光功率比该系统只有</font><span lang="EN-US" style="FONT-FAMILY: Arial; mso-bidi-font-family: &quot;Times New Roman&quot;;">8</span><font face="宋体">个波时的</font><span lang="EN-US" style="FONT-FAMILY: Arial; mso-bidi-font-family: &quot;Times New Roman&quot;;">OBA</span><font face="宋体">输出功率大</font></font><u><span lang="EN-US" style="COLOR: blue; FONT-FAMILY: Arial; mso-bidi-font-family: &quot;Times New Roman&quot;;"><span style="mso-spacerun: yes;">&nbsp;&nbsp;</span><span style="mso-spacerun: yes;">多少db?</span></span></u><font color="#000000"><font face="宋体">。</font></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; LINE-HEIGHT: 18pt; mso-pagination: none; tab-stops: 60.0pt;"><font color="#000000"><font face="宋体"></font></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 42pt; LINE-HEIGHT: 18pt; mso-pagination: none; tab-stops: 60.0pt;"><font color="#000000"><font face="宋体">大家帮忙算一下啊&nbsp;&nbsp;&nbsp;&nbsp; 明白的高手帮忙讲的详细点。&nbsp;&nbsp; 怎么算出来的啊 <span lang="EN-US" style="FONT-FAMILY: Arial; mso-bidi-font-family: &quot;Times New Roman&quot;;"><p></p></span></font></font></p></font>
时间:  2007-9-17 08:25
作者: huoniu

不懂,只能帮你顶一下,免得沉下去了!
时间:  2007-9-18 10:09
作者: nbhal775

<p>自己再顶一下。&nbsp; 沉下去啦。5555</p>
时间:  2009-8-23 03:58
作者: xoox

貌似都失去算的意义了,应该是10log32-10log8。
时间:  2009-8-23 08:40
作者: duyu2000

看看,
时间:  2009-8-23 09:27
作者: shenhqi

应该是10lg8=9dB
时间:  2009-8-26 19:28
作者: xoox

LZ应该早已算出来了,




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