ケーブリング・クロニクル

Choosing the Best Fiber Optic Scope for Today’s Fiber Inspection

Contaminated connections remain the number one cause of fiber related problems and failures in data centers, campus, and other enterprise or telecom networking environments. But it’s not enough to just clean every fiber end face—there is no way to know if the end face is clean unless you inspect it.

 

2022 年 1 月 4 日

Fiber vs. Copper to the Edge: Why Fiber is a Growing Choice for Smart, Sustainable Buildings

For years, we’ve heard about FTTX making its way into the horizontal LAN—fiber to the desktop, fiber to the office, fiber to the enclosure, fiber to the zone, etc. Often referred to as “fiber to the edge” or FTTE, most of these deployments have traditionally been for high-security government environments or specialty applications or devices. Now, as bandwidth requirements continue to increase and the commercial real estate industry is trending towards smarter and more sustainable buildings, the question of using fiber vs. copper is more relevant.

2021 年 12 月 8 日

What You Need to Know to Choose a PoE Tester

2021 年 12 月 1 日

Why upgrade test reference cord LC connectors to the Metal LC?

Fiber optic test cords connect your tester to the fiber link you’re testing and therefore act as a “window” into it. If that “window” is of poor quality or dirty, then your measurements will be, too.

Of the about one hundred test cords we offer, there are two main types of test cords:

2021 年 11 月 5 日

光ファイバ・ケーブルとテスターは 400G イーサネットに対応していますか?

Driven by large hyperscale and cloud data center providers, advancements in signaling and transceiver technology have led to the development of next-generation transmission speeds. There are now multiple options available for 400G Ethernet applications over multimode and single-mode fiber with more on the horizon. And it doesn’t stop there—big players like Google, Facebook, and Microsoft are driving innovation to support 800 Gig and 1.6 Terabit applications, and the IEEE Beyond 400 Gig Ethernet Study Group is already defining objectives.

2021 年 9 月 28 日

挿入損失

What is Insertion Loss?

Insertion loss is the amount of energy that a signal loses as it travels along a cable link. It is a natural phenomenon that occurs for any type of transmission—whether it's electricity or data. This reduction of signal, also called attenuation, is directly related to the length of a cable—the longer the cable, the greater the insertion loss. Insertion loss is also caused by any connection points along a cable link (i.e., connectors and splices).

2021 年 8 月 25 日

メタル LC コネクター:ファイバー・テスト基準コードでの壊れたラッチに別れを告げる

使用しているコンポーネントの種類に応じて、さまざまなタイプの光コネクタがありますが、LCコネクタはネットワーク業界全体で非常に一般的になっています。

プラスチック LC コネクター

LC コネクターに差し込むだけで、その後はほぼ触れることのない接続部にプラスチックを使用することで、完璧に機能します。しかし、ファイバー・テストの基準コードのように、これらの接続や切断を繰り返し行う必要がある場合、ハウジングのフレキシブルなラッチが繰り返しの屈曲によって壊れることがよくあります。

2021 年 8 月 23 日

PoE負荷試験: PoEシステムの高度なトラブルシューティング

Since the original IEEE 802.3af Type 1 power over Ethernet (PoE) standard that delivered up to 15.4 Watts (W) was first introduced in 2003, the technology has evolved to include Type 2 (up to 30 W), Type 3 (up to 60 W), and Type 4 (up to 90 W). That means PoE voltage now supports everything from phones, Wi-Fi access points, and surveillance cameras, to laptops, digital displays, and even facility-wide LED lighting—all requiring various levels of PoE power.

2021 年 7 月 27 日

データセンターでのクロス接続と相互接続

In the data center space, cross connects and interconnects via patch panels are commonly used between active equipment purely for management and flexibility, typically residing between switch tiers or between switches and servers. Some scenarios even call for using multiple cross connects or interconnects within the same channel, or a combination thereof.

2021 年 7 月 14 日

ファイバー極性の基本

Polarity defines direction of flow, such as the direction of a magnetic field or an electrical current. In fiber optics, polarity is directional; light signals travel through a fiber optic cable from one end to the other. A fiber optic link’s transmit signal (Tx) at end of the cable must match the corresponding receiver (Rx) at the other end. So, what is fiber polarity? Fiber polarity could be defined as the direction light signals travel from one end to the other end of an optical fiber cable.

2021 年 6 月 24 日