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Кабельные хроники

2019-1-08

Вы уверены, что это негатив?

Insertion loss, or the loss of signal that happens along the length of a fiber optic link, is expressed in dBs and should always be a positive number. But it can be negative (which isn’t a good thing).

Return loss, which measures the amount of light reflected back toward the source, is also expressed in dBs and is always a positive number. A high return loss is a good thing and usually results in low insertion loss.

Reflectance, which also measures reflection and is expressed in dB, is a negative number. High reflectance is not a good thing. 

2018-12-27

Красота не так уж обманчива

While neatly combed bundles of cables might look really nice in exposed overhead cable trays and in racks and cabinets, this aesthetically pleasing deployment isn’t always a thing of beauty when it comes to performance.

Sometimes this can be hard to explain to your customers who seem to care more about how the cable looks versus how well their data transmits.

Some Things Are Better Kept Natural

2018-12-18

Happy Holidays from All of Us at Fluke Networks!

'Twas the night before Christmas when all through the NOC,
Technicians were testing, their eyes on the clock.
The connectors terminated with the utmost care
In hopes there would be not a single bit err.

2018-12-11

Going the Distance

A couple of weeks ago, we published a Cabling Chronicles Blog about exceptions to the 100-meter (m) channel length rule and the fact that you can’t necessarily go the full distance due to temperature rise, gauge size and subsequent insertion loss and DC resistance.  But did you know that you can also EXCEED the 100 m length? Let’s take a look at that scenario. 

A Common Concern

2018-12-05

What Ever Happened to Category 7?

If you Google “What ever happened to,” all the top search results have to do with past celebrities or that creepy 1962 Joan Crawford and Bette Davis thriller about Baby Jane.

And if you finish your Google search to ask, “What ever happened to Category 7,” all you end up with is the hypothetical hurricane rating that one TV mini-series dubbed “the end of the world.” In other words, Category 7 cable was apparently not popular enough to make the Google search cut.

2018-11-28

An Exception to Every Rule

An Exception to Every Rule

You’re watching a baseball game, the batter hits a fair infield fly ball, and the umpire calls the batter out even though the ball isn’t caught.

You might be thinking, “Hey, that’s not the rule.” But in fact, if the umpire judges that the ball “can” be caught by an infielder with runners on first and second base (or bases loaded) and there’s less than two outs, it’s considered an “infield fly” and the batter is out to prevent a double or triple play. 

2018-11-20

Еще один год благодарности!

It’s that time of year again to give thanks! We are thankful for market growth continuing to be fueled by the IoT and Big Data, and for all the noteworthy standards ratifications that happened this year. We also wanted to take a minute to let all of our Cabling Chronicles blog fans know just how thankful we are that you continue to read our blog. We are committed to providing you with expert, valuable information to keep you informed about what's new in the world of cabling, testing and standards. 

2018-11-13

Get to know Lengthonomics

This is a guest blog from Carrie Goetz (D.MCO, RCDD/NTS, CDCP, CDCS, 1st Degree IM) who is the Global Technology Director Paige DataCom Solutions.

2018-11-06

Преимущества функций ПО версии 6,0 доступны пользователям новых и находящихся в эксплуатации модулей OptiFiber Pro

You’ve probably heard of the new OptiFiber Pro HDR models we recently introduced, which are designed for OSP and PON applications.  However, there are a number of new features now available as part of this launch that work in both the current OptiFiber Pro as well as the new HDR models.  In fact, these new features can be added to any existing OptiFiber Pro at no charge through a simple upgrade.  Let’s check out these new capabilities.

2018-10-31

Новые модули OptiFiber Pro с высоким динамическим диапазоном для тестирования за пределами завода и тестирования пассивных оптических сетей

Дополненное новым оптическим временным рефлектометром Fluke Networks OptiFiber® Pro с расширенным динамическим диапазоном (HDR) решение Versiv может применяться для работы с FTTx-системами и PON-сетями, а также в центрах обработки данных и структурированных кабельных системах с классификацией по категориям. Since Versiv users report that its efficient and familiar interface cuts costs by 65% when testing, certifying and maintaining copper and fiber network installations, it’s clear why they’d want to apply the same savings to outside plant jobs as well.

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