ホーム > ブログ：ケーブリング・クロニクル

ケーブリング・クロニクル

MPO配線システムの極性の混乱を回避！
新たなコネクターの出現と便利な極性判断ツール

光ファイバー・リンクの送信信号 (Tx) は、もう一端の受信側と当然一致しなければなりません。しかし、正しく極性を判別し、この接続性の一貫性を維持しようとしてさまざまな混乱が生じています。特に多芯ファイバー MPO 接続では、片端の位置 1～ 12 の 12 本のファイバーが他端の対応する位置に接続されていなければなりません。

2019 年 6 月 12 日

ディザスターを想定

If you’ve turned on the news in the past couple of months, or if you live anywhere in the southern or central U.S., you’re well aware that natural disasters are at an all-time high – from recent tornadoes that have stretched from Texas north to Minnesota and east to Pennsylvania, to the swelling Missouri, Mississippi, Arkansas and Ohio Rivers and their tributaries causing flooding in nearly two-thirds of the country. In fact, 2019 has already seen more than 1000 confirmed tornadoes (more than in all of 2018), and more than half happened in the month of May. 

2019 年 6 月 6 日

新しい Wi-Fi 6 で必要なテスト

Earlier this year, the IEEE released its 802.11ax Enhancements for High Efficiency Wireless (HEW) LAN standard, known commonly as Wi-Fi 6. This new advanced Wi-Fi application is positioned to theoretically deliver close to 10 Gig transmission through the use of eight spacial streams that each transmit at 1.2 Gb/s compared to Wi-Fi 5 (802.11ac) at just 866 Mb/s per special stream. It also has the ability to operate in both the 2.4 GHz and 5 GHz bands.

2019 年 5 月 29 日

新しい高密度光ファイバー・コネクター登場に伴う Tier 1 テストの課題

データ・センターの高密度化ニーズに対応するために、最近 2 つの新しい光ファイバー・コネクターが発売されました。ただし、これらのコネクターはまだ新しいため、これらに対応したインターフェースを持つテスト機器がまだ存在しません。これは、Tier 1 試験を実施するうえで問題となるため、推奨される従来の 1 ジャンパー基準法から切り替える必要があります。では、これらのコネクター・タイプとそのテスト方法について詳しく見ていきましょう。

2019 年 5 月 15 日

You Too Can Transform How You Do Business

Last week, Fluke Networks announced that the number of results uploaded to our LinkWare Live cloud service has exceeded 20 million. If you’re one of the many who contributed to the doubling of total results over the past year, you’ve already witnessed the benefits and cost savings of managing cabling certification jobs anytime, anywhere, with anyone on any device.

2019 年 5 月 7 日

What is (+All) and When Should I Choose It?

When it comes to testing twisted-pair cabling, there are some key testing parameters required for certifying a permanent link to industry standards—parameters like insertion loss, NEXT, PSNEXT, ACR-N, PSACR-N, ACR-F, PSACR-F and return loss. And when it comes to testing Cat 6A (or Class Fa for ISO11801 standards), we also have PSANEXT and PSAACR-F for alien crosstalk testing.

2019 年 5 月 1 日

What Ever Happened to the Mechanical Splice?

When it comes to joining two or more optical fibers together, fusion splicing whereby cleaved fibers are aligned and fused by an electric arc provides the lowest loss and strongest, most reliable joint.

While mechanical splice connectors have come a long way and are an ideal field termination method for connectorizing fiber, we rarely hear much anymore about mechanical splicing as a means for joining fibers along a link – even though it eliminates the need for expensive fusion splicing equipment.

So what ever happened to the mechanical splice anyway?

2019 年 4 月 23 日

What Ever Happened to the Mechanical Splice?

When it comes to joining two or more optical fibers together, fusion splicing whereby cleaved fibers are aligned and fused by an electric arc provides the lowest loss and strongest, most reliable joint.

While mechanical splice connectors have come a long way and are an ideal field termination method for connectorizing fiber, we rarely hear much anymore about mechanical splicing as a means for joining fibers along a link – even though it eliminates the need for expensive fusion splicing equipment.

So what ever happened to the mechanical splice anyway?

2019 年 4 月 23 日

Cat 6A – A Bright Future Ahead

We all know that Category 6A is considered the highest performing twisted-pair cabling that supports 10 Gig speeds, and it’s been around now for more than a decade. So, you might be surprised to learn that Category 6 (now 17 years old!) continues to dominate worldwide sales of twisted-pair copper cabling. Although declining, even Category 5e that was introduced 20 years ago maintains a significant share of the market. 

2019 年 4 月 16 日

Testing on the Edge

You’ve probably heard all the buzz about edge data centers. Don’t worry – this doesn’t mean you’ll be testing fiber links while hanging on the side of cliff.  But while you might be testing in new spaces, edge data centers won’t really change what you’re already testing.

So what exactly is an edge data center, anyway? 詳しく見ていきましょう。

2019 年 4 月 10 日