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Shield integrity test - DSX CableAnalyzer

If you have access to YouTube, you can click here to watch a video of this new feature in action.

In data centers where the shield is typically grounded at both ends, ANY wire map tester will report the shield as connected, even if it is not. That's because the shield test is a simple DC Resistance measurement. If the shield is open, it will find the remote unit using the building ground (earth).

The DSX CableAnalyzer offers a unique solution to this problem. It ties the four pairs together and then sends a differential signal down the cable treating the shield as the second conductor. This allows the DSX CableAnalyzer to view the shield in the time domain. So even if the patch panels are grounded, it will report the shield open, if indeed it is open you would see:

And since it is using time domain techniques, the distance to the open is given. In this example, we can see the patch panel at the near end is the issue.

The scenario above occurs when the technician grounds the connector on the non conductive side of the cable shield. The result is degraded Alien Crosstalk performance. Since users are told that shielded cabling systems do not need to be tested for Alien Crosstalk, one wonders how wide spread this issue is and whether users are getting the performance they paid for.

附加信息

If you only use the drain wire to connect the shield and that drain wire is greater than approx. 2 inches (5 cm), the DSX CableAnalyzer may report the shield as open. This is by design. Such a termination acts as an open circuit at the frequencies we are talking about here.

色妇精东麻豆国产一区二区三区

目录

色妇精东麻豆国产一区二区三区

销售品牌+

贵濒耻办别/福禄克工业仪器+

红外热像仪+

测温仪+

数字万用表+

数字钳形表+

绝缘电阻测试仪+

接地电阻测试仪+

示波器+

蓄电池电阻分析仪+

电能质量分析仪+

安规测试仪+

过程校准器+

回路校验仪+

压力校验仪+

温度校验仪+

测距仪+

粒子计数器+

多功能环境测试仪+

照度计+

空气质量检测仪+

风速仪+

安装测试仪+

激光对中仪+

测振仪+

数据采集器+

医疗测试+

配件/工具+

狈别迟础濒濒测（原狈别迟厂肠辞耻迟）+

有线色妇精东麻豆国产一区二区三区+

无线色妇精东麻豆国产一区二区三区+

有线+无线色妇精东麻豆国产一区二区三区+

Fluke Networks/福禄克网络仪器+

网线测试仪+

色妇精东麻豆国产一区二区三区+

光纤测试仪+

配件/工具+

贵尝滨搁/菲力尔+

红外热像仪+

搁补测迟别办/雷泰仪器+

红外测温仪+

在线式红外测温仪+

碍贰驰厂滨骋贬罢/是德（原础驳颈濒别苍迟/安捷伦）+

数字万用表+

电源+

示波器+

痴滨础痴滨（原闯顿厂鲍）+

光时域反射仪（翱罢顿搁）+

光功率计+

光源+

贰齿贵翱（加拿大贰齿贵翱）+

光时域反射仪（翱罢顿搁）+

光功率计+

光源+

罢别办迟谤辞苍颈虫/泰克+

数字万用表+

示波器+

数据采集器+

信号发生器+

图形源表厂惭鲍仪器+

配件+

惭别驳驳别谤/梅凯（梅格）+

绝缘电阻测试仪+

继电保护测试仪+

低电阻测试仪+

接触电阻测试仪+

接地电阻测试仪+

贵翱罢搁滨颁/飞础科+

红外热像仪+

配件+

碍驰翱搁滨罢厂鲍/共立（克列茨）+

绝缘电阻测试仪+

厂鲍惭滨罢翱惭翱/住友+

光纤熔接机+

贵耻箩颈办耻谤补/藤仓+

光纤熔接机+

驰翱碍翱骋础奥础/横河+