zhaoyuchao2000 发表于 2012-12-3 21:45:00

关于DS7400报警系统总线传输的问题。

<p>大家好&nbsp; 我现在遇到一个关于DS7400的问题希望大家能帮我解决一下！</p>
<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;我的总线距离是一千米 但是由于工人不线的时候把总线布成了2*1.0的屏蔽线 现在遇到的问题是 前边9-22防区显示正常 但是从23防区到最后一个30防区信号回不来 23防区距离主机大概有600米左右 前端对射探头都能对上 我想请教一下是不是总线距离受到了传输限制 如果是这样的话现在怎么解决？ 设备里面有DS7426 但是从主机到第一个探头之间距离只有二百米不到 用不上&nbsp; 希望大家给一个好的建议&nbsp; 键盘显示是23-30防区未准备状态。</p>

misgang88 发表于 2012-12-3 23:20:00

加信号放大器

biaowang 发表于 2012-12-5 17:35:00

<p><span style="FONT-FAMILY: 新宋体; COLOR: black; FONT-SIZE: 9pt; mso-bidi-font-family: 'Times New="New"Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><a href="http://www.biao110.com"><font color="#ff00ff">乐普家用报警器</font></a>，具有<span lang="EN-US">99</span>路<span lang="EN-US">LCD</span>防区显示，主机可同时连接多路无线探测器，支持<span lang="EN-US">8</span>路有线探测器接口， 具有现场报警和通过电话线报警功能<span lang="EN-US">,</span>无线探测器和遥控器均采用自动学习对码。</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 9pt; mso-bidi-font-family: 'Times New="New"Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 12.0pt">全语音导航操作系统，实时时钟记录报警历史信息，可定时布<span lang="EN-US">/</span>撤防。配置防宠物红外探测器，低电拨号语音报告主人，探测器</span><span style="FONT-FAMILY: 新宋体; COLOR: black; FONT-SIZE: 9pt; mso-bidi-font-family: 'Times New="New"Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">电池可用<span lang="EN-US">3</span>年以上。无线</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-bidi-font-family: 'Times New="New"Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"Roman'; mso-hansi-font-family: 'Times New="New"Roman'">空旷发射距离可达</span><span style="FONT-FAMILY: 'Times New="New"Roman'; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 10.5pt; mso-fareast-font-family: 宋体" lang="EN-US">80-85</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-bidi-font-family: 'Times New="New"Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"Roman'; mso-hansi-font-family: 'Times New="New"Roman'">米障碍</span><span style="FONT-FAMILY: 'Times New="New"Roman'; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 10.5pt; mso-fareast-font-family: 宋体" lang="EN-US">60-65</span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-bidi-font-family: 'Times New="New"Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"Roman'; mso-hansi-font-family: 'Times New="New"Roman'">米。</span></p>
<p><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-bidi-font-family: 'Times New="New"Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 10.5pt; mso-ascii-font-family: 'Times New="New"Roman'; mso-hansi-font-family: 'Times New="New"Roman'"></span>&nbsp;</p>

maiwp 发表于 2012-12-6 20:59:00

加信号放大器吧，要不换大点的线 信号传输损耗过大
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