Блог: Кабельные хроники | Fluke Networks

Блог

Кабельные хроники

2019-8-06

Short-Reach Singlemode Puts Reflectance on the Radar

Most of us are well aware that insertion loss budgets have gotten tighter as we have moved from 10 to 40/100 Gig for multimode fiber applications. One would think that we can’t say the same for singlemode applications that have historically meant larger loss budgets – 6,3 dB for 100 Gig over singlemode (100GBASE-LR4) versus just 1,9 dB for 100 Gig over multimode (100GBASE-SR4). But that’s no longer the case with new short-reach singlemode applications.

2019-7-31

101 Series Ethernet: Назад к основам

It’s been more than 40 years since Bob Metcalfe published this simple diagram explaining his invention for interconnecting computers and printers at the Xerox Palo Alto Research Center in California. His patented multipoint data connection system with collision detection later became known as Ethernet.

2019-7-23

Know the Punch Line

Installers have been punching down copper twisted-pair cable for decades and still do so for terminating cables to IDC towers on jacks, patch panels and connecting blocks. While the practice hasn’t changed, punchdown tools have come a long way, and you now have some options at your fingertips. So how do you choose? Let’s take a closer look.

The Old Reliable One

2019-7-17

AV over Twisted-Pair: What Do I Need to Test For?

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.

2019-7-10

Not Exactly in the Limelight – Yet.

It’s been a while since we’ve talked about OM5 multimode fiber, and despite its lime green color and being added to the ANSI/TIA-568.3-D standard in 2016, it hasn’t exactly been in the limelight – but it looks like that won’t always be the case.

2019-7-01

Cabling Chronicles’ 4th of July Reflections

The 4th of July is always a time to reflect on our history, where we come from and the dedication of our founding fathers. But it’s also a time to look ahead, learn from past mistakes and progress towards a better future.

2019-6-26

Channel, Permanent Link, Patch Cords, MPTL, E2E… Oh My!

With the addition of the modular plug terminated link (MPTL) configuration to the latest ANSI-TIA 568.2-D standard, and now end-to-end (E2E) configurations getting some attention in ISO/IEC standards (and likely soon TIA as well), you might be overwhelmed with the choices and be wondering what you’re supposed to test and when. Let’s take a look.

Channel Testing

2019-6-19

Understanding insertion loss and loss budgets: Make or break an ICT career Digital Transformation and Industrial IoT age

Expert Profile: Vangie Michenzi, Senior Fiber Optic Project Manager, Advanced Communication Technology Services

Part 3 of a three-part series

In this day and age, with everyone preparing for the future of 5G, the internet of things, and industrial automation, if you’re a contractor or technician you better know and understand loss budgets!

2019-6-12

Getting Polarity Right the First (or Second) Time Around

While the fact that a fiber link’s transmit signal (Tx) must match the corresponding receiver (Rx) at the other end makes perfect sense, ensuring proper polarity to ensure that this correspondence is maintained continues to cause plenty of confusion – especially when it comes to multi-fiber MPO connectivity where 12 fibers located in Position 1 through 12 at one end must each arrive at their corresponding position at the other end.

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