ブログ:ケーブリング・クロニクル|www.flukenetworks.com/jp

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ケーブリング・クロニクル

2018-5-16

We talk a lot about certifying copper cable plants using Fluke Networks’ DSX CableAnalyzer series certifiers, but voice, video and data deployments start with technicians having the right copper installation tools.

While Fluke Networks offers a wide range of copper and fiber installation tools designed to streamline the job and make you more productive, we thought it would be fun to take a look at our top 5 everyday copper installation tools from an Amazon.com point of view.

1. Can Wrench - 4.7 Stars

2018-5-09

Whether it’s video conferencing or digital signage, many of you are likely facing requests from your customers to deploy cable plants that support audio-visual systems.

2018-5-02

For several years, you’ve been deploying cable plants that support power over Ethernet (PoE) for variety of devices like VoIP phones and security cameras.So far, up to 30 Watts is all you’ve been requested to support, but with the plethora of devices now able to take advantage of higher levels of PoE—like the latest 802.11ac Wi-Fi access points, digital displays and even desktop computers—your customers are starting to ask for four-pair PoE.

2018-4-25

Like the TIA and ISO, Fluke Networks promotes the use of the 1-cord method to set reference for fiber loss measurements.The 1-cord method is where a launch cord is attached to a light source and the other end to a power meter.A reference is then set (the power measured is defined as 0 dB).Next, the launch cord is disconnected from the power meter, but not the light source.Then the far end of the launch cord is attached to the cabling under test and a receive cord between the far end of the cabling under test and the power meter.

2018-4-18

We’ve covered fiber insertion loss testing in depth in many blogs, so by now you should know that it is the loss of signal that happens in a channel due to the length of the cable and any connectors, splices or splitters.

And hopefully you also know that estimating your loss budget involves adding up the loss of all of these components to make sure you’re within the loss limits specified by IEEE standards for the application you plan to run.

2018-4-11

業界では一般的に、メタル線ツイスト・ペア・ケーブルのイーサネットに設置される 8 極 8 芯 (8P8C) モジュラー式インターフェースを「RJ45」と呼んでいますが、これは本来は誤用です。

RJ45 の名前が定着し、今日までツイスト・ペア・イーサネット・アプリケーションの事実上の標準インターフェースとして使用されてきた経緯について、詳しく見ていきたいと思います。

2018-4-04

ダッシュボードのエンジンランプが点灯してもしばらく運転する人がいるのと同じように、フルーク・ネットワークスからの電子メールまたは LinkWareライブ 通知が届いても、テスターの校正を先延ばしにする人がいます。

2018-3-28

You might remember that just about three years ago, the DTX CableAnalyzer™ was officially retired.Since its discontinuation, Fluke Networks has continued to offer technical support, repair and calibration for this tester that was once touted as the ultimate time saver and brought testing to a whole new level when it was introduced in 2004.

2018-3-21

今日の高速光ファイバー・ネットワークでは、850nm 垂直共振器面発光レーザー(VCSEL)が使用されているため、テストに発光ダイオード(LED)光源が使われる理由について疑問に思っている方もいらっしゃるのではないでしょうか。この疑問を解消するために、これら 2 つの光源の違いについて説明します。

過去の教訓

2018-3-14

Adopted by TIA, the nomenclature for multimode fiber found in the ISO/IEC 11801 standard includes the prefix “OM.”

Rather than the spiritual mantra you hear in yoga class, most sources in our industry state that the acronym OM comes from “optical multimode” which seems rather obvious.But when it comes to the various nuances of each type of OM, the differences aren’t quite as obvious.

詳しく見ていきましょう。

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