Crônicas sobre cabeamento


101 Series: Understanding Copper Cabling’s Balancing Act

 You have likely heard copper network cabling referred to as balanced twisted-pair copper cabling, and maybe you’ve heard of the testing parameter referred to as DC resistance unbalance. But what does all this balance-related terminology really mean, and why should you care?

It’s All About Balance


What’s the Deal with OM5?

Guest Posting from Corning Optical Communications

OM5, previously known as wide band multimode fiber or WB MMF, has been quite the hot-button topic as the standards have been widely debated and are now finally concrete.

So what is OM5 exactly? Most simply, it’s a version of the OM4 fiber with additional bandwidth characterization at 953 nm.


To bend or not to bend, that is the question*…

Lately, I have been getting questions about why bend insensitive multimode fiber (BIMMF) can’t be used in test cords. The argument is that non-BIMMF (e.g., “traditional” fiber) is becoming more difficult to procure and installers need the flexibility to buy something off the shelf. Additionally, requests are being made to change one IEC testing standard to not mandate the use of non-BIMMF in test cords. Let’s examine this closer and explore the consequences.


What does this button do?

No, not what Deedee would ask Dexter in his lab, what does that button do on the bottom of the FI-1000 video inspection camera? It turns out it has a really helpful function that I want to share with you here.


Fibra: Not Just for the Backbone Anymore

In recent years, passive optical LANs have gained significant popularity as an alternative to horizontal copper structured cabling in a variety of enterprise spaces.

The technology brings fiber out of the riser backbone and data center, and with that comes the need for fiber technicians to test these systems out in the horizontal space.

Let’s take a closer look at these passive optical deployments.

How Do They Work?


The Wild Wild West of Fiber—Where Anything Goes

In last week’s blog, we took a Closer Look at 40 Gig Duplex Multimode Applications, just one of the many ways that today’s data centers are cost-effectively achieving increased bandwidth in switch-to-switch fiber links. And when we say many ways, we literally mean many.


A Closer Look at 40 Gig Duplex Multimode Applications


There’s been a lot of talk in the industry surrounding solutions capable of running 40 Gig Ethernet over duplex multimode fiber—especially with OM5 wideband multimode fiber (WBMMF) now recognized within industry standards that specifies wavelengths between 840 and 953 nanometers to support wave division multiplexing (WDM).


Testing Cabling With MPO Connectors – What’s New?

With the wide variety of standards relating to fiber optic cabling, the absence of published standards for testing fiber optic cabling terminated with MPO connectors might come as a surprise. Finally, a technical report (TR), written by this author, is scheduled for a June 2017 publication that provides such testing guidance - it is TR/IEC 61282-15. A technical report provides guidance on a subject but does not have requirements (e.g. no “shalls”) as an international standard or an ANSI/TIA standard would.


What’s All the Buzz About LP?


You maybe have heard the recent buzz about LP-certified cable for power over Ethernet (PoE) applications and be wondering if you need this cable for your PoE installations. Let’s take a closer look at this new UL certification, its relationship to the 2017 National Electric Code, why it was introduced and why you still need to test.

An Optional Alternative


101 Series: Getting the Picture on Delay Skew

You may have heard that propagation delay and delay skew parameters are important for IPTV, surveillance and video conferencing, and many vendors may tout delay skew performance for these video applications.

But do you know why these parameters are important for video applications? As part of our Cable Testing 101 series, we thought you might want to know more.


Shield Integrity

Back when Wolfenstein 3D was all the rage, we set up an exhibit at a BICSI conference where we tried to make a Cat 5 link fail by inducing noise onto it. We tried all kinds of no-no’s, such as placing the cable next to a fluorescent ballast, a large electric motor, and even the coil of a running car’s engine, yet the link provided virtually error-free 100BASE-TX performance. At that point, it didn’t seem like there would be much benefit for screened cable for the vast majority of installations.


#ICYMI: Highlights from 2017 BICSI Winter


The 2017 BICSI Winter Conference wrapped up last week in Tampa where thousands of ICT professional from around the world had a chance to gain valuable industry knowledge and check out the latest products from nearly 180 vendors in the exhibit hall – including our new DSX-8000 CableAnalyzer.


The Road to a Category 8 Tester

On January 23, we announced the DSX-8000 CableAnalyzer™, the first true Category 8 tester.  You may be wondering what is required for a “true” Category 8 certification tester and why we launched it now.


Wire Map Testing: It’s Not All About Color

A wire map test may seem like the most basic test for copper network cabling and therefore one of the least important, but it is actually one of the most critical. And while the pair colors of blue, orange, green and brown might help you pass wire map testing, the test itself really doesn’t care about color at all.

Let’s take a closer look.


CCA: Not Worth the Savings or the Risk


So you came across some Category 6 cable available online for practically half what you've been paying for that brand name. It claims TIA-568-C compliance, includes the UL listing mark and even has a ETL verification legend printed right on the cable. Before you get too excited, you might want to make sure that cable isn't made with copper clad aluminum (CCA).


Twisted Pair Cabling Measurements – New Poster from Fluke Networks


Goodbye 2016. You Weren’t ALL Bad


All over the news and social media, 2016 has gotten a pretty bum rap.

With everything from shootings, terrorist attacks and the weirdest presidential election in history, to exploding cell phones, scary clown threats and numerous celebrity deaths, 2016 has been denoted as the worst year ever.


The Smart Choice for Any Environment

The only way to get correct values when performing Tier 2 testing of duplex fiber links with an OTDR is via bidirectional testing that averages the measurements taken from both ends of the link.

Bidirectional testing used to involve testing the fiber from one end, walking the OTDR to the other end to test again and then averaging the two values to get the results—and it had to be done for each link.


Happy Holidays from All of Us at Fluke Networks!

'Twas the night before Christmas when all through the LAN, 
the channels were tested except for the SAN.
MPOs easy with MultiFiber™ Pro,
gave me hope I'd be done before fallen snow.
With SmartLoop letting me to test from one end,
I knew that I'd soon start my weekend.


2017 colocará os testadores à prova


Chegou novamente a hora de apresentar nossas previsões para as maiores tendências em testes no próximo ano.

Obviamente, a internet das coisas (IoT) continuará sendo uma grande impulsionadora no cabeamento de todos os tipos de redes - desde LAN, onde veremos mais dispositivos do que nunca conectados por cabos de par trançado de cobre, até centros de dados, onde a demanda para cabos de fibra de alta velocidade continua a crescer - à medida em que as empresas enfrentam a necessidade de acessar, transmitir e armazenar um volume de dados sem precedentes.


That Jacket Isn’t Waterproof – adventures in troubleshooting installed cable with the DSX-5000

It felt like a Monday morning when the call, actually an e-mail, came in. “I think my DSX is broken!” As you know, they are really tough machines and, when it looks like the Fluke is wrong, usually it isn’t.

“What makes you think it is broken?” I asked, “How does this failure manifest itself?”

“The tester is failing links that used to pass.”


Loss Measurement Uncertainty - Revisited

You have just made a loss measurement using an Optical Loss Test Set (OLTS). The measurement was made to a test limit, the result was a PASS, and the margin was provided. Have you ever thought about how much margin is acceptable?


Much to be Thankful for

There is much to be thankful for in our industry these days as market growth continues to be fueled by the IoT and big data driving the need for LAN and data center upgrades.


Bi-Direction Testing with an OTDR



Cable Testing 101: How to Read the Details of Your LinkWare™ PC Report

In our last 101 Series Blog, we took at closer look at everything in blue at the top of your LinkWare Report. But what if your customer wants you to explain the detail and those pretty charts to the right?

Let's dive deeper so you're prepared for that possibility.


Cable Testing 101: What's at the Top of Your LinkWare Report?

So you used your DSX-5000 to test some recently installed copper network runs for your customer. You can easily see on your tester if the link failed or passed for the application you were testing, but now your customer wants a customized report showing the detail. 


Beware of Ghosts and Dead Zones!

It’s that time of year again with a chill in the air, falling leaves and all things spooky.

In the spirit of Halloween, we thought it apropos to take a look at two of the most confusing (and perhaps scariest) OTDR events--ghosts and dead zones.

When You See What Doesn't Exist


Wide Band Multimode Fiber – an Update

Recently, there has been some buzz about Wide Band Multimode Fiber (WBMMF). The 2016 edition of document TIA-492AAAE, released on June 1, is available. This document/standard is the detailed specification for 50 μm graded index multimode optical fiber with laser optimized bandwidth characteristics specified for wavelength division multiplexing. So, from an installed cabling testing perspective, what is the difference between WBMMF and other multimode fiber and how should you test it in the field?


Cable Testing 101: There's No Gain with "Gainers"

Akin to water flowing from a small pipe into a large pipe, gainers are essentially perceived increases in optical power that occur at splice points due to variations in fiber characteristics, including core diameter, numerical apertures, mode field diameters and backscatter coefficients.


A Closer Look at 8-Fiber MPO Solutions

The use of plug-and-play 12-fiber MPO solutions for multimode fiber backbones in the data center has been popular for several years, starting with 10 Gigabit Ethernet where 12-fiber MPO assemblies connect MPO-to-LC cassettes or modules that transition the 12-fiber MPO connections to 6 duplex LC connections.


Shed Light On Your High Density Fiber Inspections


Over the past decade, the amount of fiber in the data center has increased significantly due to the need for higher bandwidth between switches and the ever increasing amount of equipment requiring fiber uplinks to storage area networks (SANs), not to mention the demand for maximum availability that calls for redundant primary and secondary fiber network connections to every piece of equipment.


Category 8 Approved. E agora?


O Subcomitê de cabeamento de cobre TIA TR-42.7 aprovou recentemente as especificações para a categoria de cabeamento 8 (TIA 568 C.2-1), o mais recente sistema de fios de cobre em par trançado projetado para oferecer suporte a futuras aplicações IEEE 25GBASE T e 40GBASE T, atualmente em desenvolvimento.

With all the buzz surrounding Category 8, you and your customers might be wondering how exactly it will impact the deployment and testing of cabling infrastructures.

Let's take a closer look at where it will be deployed and some of the key characteristics that impact installation and testing.


Cable Testing 101: Crosstalk Near and Far


Blogpost Series Icon

If you're at all familiar with copper cable, you've probably heard about crosstalk--the phenomenon by which a signal transmitted on one pair or one channel creates an undesired affect on another pair or channel.


Just Now Upgrading to 10 Gig

Just Now Upgrading to 10 Gig? We Didn't Forget About You

While upgrading backbone cable plants in the LAN to support 10 Gig has been going on for several years since the release of the 10GBASE-SR standard for fiber, many enterprise businesses did not previously require these types of speeds, until now.


NBASE-T Alliance Releases Guidelines for Evaluating Your Cable Plant’s Readiness for NBASE-T


Acertando a configuração

Configure da forma correta para garantir os melhores resultados de teste com seu DSX-5000

Se você aparecer em uma nova instalação com seu novo DSX-5000, então pode ser que você tenha de garantir que o DSX-5000 esteja configurado corretamente. O que você tem de fazer, então?

Bem, se o aparelho acabou de sair da caixa, você deve fazer uma configuração básica. Entretanto, cada novo projeto pode exigir alterações, se você fizer testes de instalação em outros países ou diferentes fusos horários, com exigências distintas para diferenças de data ou hora ou diferentes formatos para eles ou para números.


Cable Testing 101: Insertion Loss Matters for Fiber and Copper

I The amount of energy that a signal loses as it travels along a cable link used to be referred to as attenuation--the verb attenuate being defined by Merriam Webster as "to reduce the force, effect or value of something."


I can’t see the end of my fiber that has an APC connector attached when I do an OTDR test, so how can measure the loss in the APC connector and the whole link?

This question often gets asked in my classes at the same time as when talking about launch methods using launch and tail fibers. So let’s talk about launch fiber compensation.


POH: The Power Behind HDBaseT

 Last month we posted a blog about HDBaseT that explained the application and how testing isn't really any different since standards-based Category 5e, 5 or 6A will support it. But maybe you've also heard about power over HDBaseT, or POH, and you're wondering how that differs from power over Ethernet (PoE).

A Little Bit More


Cable Testing 101: Mixing Multimode Fiber Types


Blogpost Series IconIn our last Cable Testing 101 series, we covered the difference between OM3 and OM4 50µm multimode fiber -- primarily the fact that the fiber core of OM4 has been constructed to provide better attenuation and higher bandwidth, thereby allowing for longer link lengths.


Field testing misconceptions: Alien crosstalk, do we test or not? If so, how and what’s the process?

Alien crosstalk is a relatively new measurement that’s widely misunderstood. I’m often asked why it’s an important measurement and if it’s required to be measured by the standards. Also misunderstood is the sampling criteria for alien crosstalk measurements, which are applied so that not all links have to be tested?


Cable Testing 101: What is the Difference Between OM3 and OM4?


Blogpost Series IconOM3 and OM4 multimode fiber are two common types of fiber used in local area networks--typically in backbone cabling between telecommunications rooms and in the data center between main networking and storage area network (SAN) switches.


Nova versão 4,8 do código do Version Build 1 e LinkWare PC 9,6 já estão disponíveis

Nova versão 4,8 do código do Version Build 1 e LinkWare PC 9,6 já estão disponíveis

Acabamos de lançar uma nova versão do código para todos os modelos Versiv e achamos que você vai gostar do que ver.


Cat8 é aprovado. Onde está meu testador?


Precisa simplificar a rotulagem de cabos? Há um novo aplicativo para isso!

Embora seja, provavelmente, uma das normas menos faladas, e que muitas vezes é considerada voluntária, a norma de rotulagem TIA-606-B existe por um motivo.

Uma infraestrutura sem rótulos resulta em uma desordem incontrolável que, no final das contas, torna todas as tarefas de reconfiguração e solução de problemas em um jogo de esconde-esconde demorado, frustrante e de rastreamento dispendioso.


Aquele algo a mais

Maximizar a produtividade é essencial no ritmo acelerado nos locais de trabalho de hoje. Seja instalando novos links de fibra ou identificando falhas nas redes existentes, quanto mais rápido você localizar o problema, mais rápido você pode corrigi-lo. Isto é mais fácil de falar do que de fazer, quando você colocado diante de uma rede complexa d fibras, conetores e patch cords.


HDBaseT: igual, mas diferente

Então, seu cliente decidiu implantar HDBaseT para monitores de vídeo de ultra-alta definição e sinalização digital. Se você já tiver experiência na implantação de uma infraestrutura de cabeamento de cobre para aplicações Ethernet baseadas em IP, como voz e dados, não há muito com que se preocupar.

Mas, mesmo assim, é importante saber o básico e as melhores práticas necessárias para o desempenho HDBaseT e a transmissão de vídeo sem erro, e o que é necessário quanto a testes.


Como ter sucesso nos testes de sua zona de conforto



Verificação, qualificação, certificação: qual preciso?

Quando se trata de testar uma instalação de cabeamento, essencialmente há três opções, verificação, qualificação e certificação.

Embora alguns recursos se sobreponham entre as ferramentas de teste conforme você sobe a escada hierárquica da verificação para certificação, cada tipo de teste responde a uma das questões seguintes para ajudá-lo a fazer a escolha certa.


Meu primeiro MultiFiber Pro. Meu último cabo Fan-Out.


Standards Update: Multimode On the Road to 400 Gig

Over the past decade, we have seen significant advancements in the capabilities of fiber optic cabling--from expanded distances to speeds reaching 40 and 100 Gig.

While fiber loss requirements are getting tighter, efforts are also underway to increase fiber bandwidth carrying capacity with reduced fiber counts--all while following the roadmap to 400 Gig.

The Count Down


Erro bobo n.° 6 e n.° 7: uso de um testador não compatível com EF e uma verificação em dois cabos

Enquanto as pessoas inteligentes que instalam, testam e certificam instalações de cabeamento de rede sabem a importância do cumprimento das normas, parâmetros de desempenho e garantir o suporte a aplicativos, até mesmo o melhor de nós pode cometer erros que afetam negativamente o resultado e a satisfação do cliente.


Subcomitê do TR-42.7 trabalha de mãos dadas com o IEEE

Com a necessidade de maior velocidade e potência em Ethernet (PoE) sendo resolvida dentro dos padrões do IEEE, o trabalho no TIA deve seguir o mesmo caminho à medida que as equipes dos dois órgãos reguladores trabalham de mãos dadas para assegurar que as aplicações apresentadas pelo IEEE possam ser adequadamente suportadas pela infraestrutura de cabeamento.

Vamos examinar algumas das atividades recentes e mais significativas referentes a padrões no Subcomitê e como elas se relacionam com o desenvolvimento de padrões que ocorre no IEEE.


O que há de novo no Versiv?

Várias vezes tentamos levar em conta a necessidade de manter seu testador atualizado com o firmware mais recente e por boas razões. Não só queremos nos certificar de que você não perca os mais recentes recursos que podem ajudá-lo a testar mais rápido e com mais precisão, mas como os padrões mudam, seu testador também deve mudar.


Suba a bordo! O SmartLoop™ ficou mais esperto

Os testes bidirecionais dos links de fibra para Tier 2 (OTDR) não são apenas exigidos pelos padrões da indústria e a maioria dos fabricantes por garantia, são também a única maneira de saber a real perda global de um link. Isso ocorre porque medir a perda de conectores de fibra óptica e emendas, bem como a perda global do link, depende da direção do teste. Testar um link de fibra em uma direção pode dar resultados diferentes do que testar o mesmo link de fibra na direção oposta.  


Quanto tempo e dinheiro você está perdendo?

É fim de tarde e sua equipe acaba de terminar um trabalho. Agora é hora de pegar os testadores e voltar com os resultados ao escritório. Mais se aquela for sua caixa branca no caminhão parado no engarrafamento ali, quanto isso vai lhe custar?


Análise da sujeira na frente da extremidade do conector de fibra

O desempenho de um link instalado de fibra ótica baseia-se na condição das faces de extremidade do conector. Fornecedores de teste estão pressionando a inspeção das faces da extremidade por um bom motivo – a maioria das chamadas de serviço ocorre devido a problemas com conectores. Organismos de normalização estão ocupados fazendo melhorias para seus documentos na inspeção visual. Este trabalho está sendo feito na subcomissão 25, grupo de trabalho 3, que é responsável pela elaboração de normas para instalações de cabeamento nas instalações do cliente. Desenvolvimentos recentes na inspeção das faces da extremidade são o tema deste blog.


Erro bobo n.° 2 e n.° 3: Negligenciar um acordo sobre os resultados marginais de teste e especificar todos os parâmetros de testes diretamente

Enquanto as pessoas inteligentes que instalam, testam e certificam instalações de cabeamento de rede sabem a importância do cumprimento das normas, parâmetros de desempenho e garantir o suporte a aplicativos, até mesmo o melhor de nós pode cometer erros que afetam negativamente o resultado e a satisfação do cliente.

Vamos dar uma olhada nos erros bobos n.° 2 e n.° 3 que pessoas inteligentes fazem ao testar sistemas de cabeamento de rede — negligenciando um acordo sobre resultados marginais de teste diretamente, por escrito, e não especificar todos os parâmetros de teste.


Erro bobo n.º 8: Usando cabos de teste BIMMF e um mandril comum

Enquanto as pessoas inteligentes que instalam, testam e certificam instalações de cabeamento de rede sabem a importância do cumprimento das normas, parâmetros de desempenho e garantir o suporte a aplicativos, até mesmo o melhor de nós pode cometer erros que afetam negativamente o resultado e a satisfação do cliente.

Vamos dar uma olhada no Erro bobo n.º 8 que pessoas inteligentes fazem ao testar sistemas de cabeamento de rede — Usar cabos de teste BIMMF (Bend Insensitive Multimode Fiber) e um mandril comum.


What’s going on with ISO/IEC 11801?

ISO/IEC 11801, Information technology – Generic Cabling for Customer Premises is being overhauled. The last version, edition 2,2 was published in 2011. In that version ISO/IEC 11801 was one all-inclusive document. Since then, because of its size, the standard has been divided into six parts:


If Anything Can Go Wrong, It Probably Will

How we communicate and share information today is all done via networks, and every day our world becomes more connected. The Internet of Things (IoT) is placing more IP-based devices on the network than ever before--from digital displays and LED lighting, to security apparatus and building automation systems.


Your Burden of Proof Lies in the Documentation

A certificação de uma instalação de cabeamento não significa nada sem o ônus da prova. Documentar os resultados é a única maneira de garantir a integridade e a responsabilidade da instalação, resolver disputas e facilitar uma solução de problemas mais eficiente.


Erro bobo n.º 1: Especificando os testes do canal ao instalar links permanentes

Enquanto as pessoas inteligentes que instalam, testam e certificam instalações de cabeamento de rede sabem a importância do cumprimento das normas, parâmetros de desempenho e garantir o suporte a aplicativos, até mesmo o melhor de nós pode cometer erros que afetam negativamente o resultado e a satisfação do cliente.

Vamos dar uma olhada no Erro bobo n.º 1 que pessoas inteligentes fazem ao testar sistemas de cabeamento de rede — especificando testes de canal ao instalar links permanentes.


What’s Your Best Asset?

To maximize return on investment, your test equipment moves from jobsite to jobsite. At any given moment, several of your skilled technicians can be testing and certifying network cabling with multiple testers for multiple concurrent projects in multiple areas—a real recipe for mixing up and misplacing test equipment.


Erro bobo n.º 5: Esquecendo-se de habilitar dados de plotagem

Enquanto as pessoas inteligentes que instalam, testam e certificam instalações de cabeamento de rede sabem a importância do cumprimento das normas, parâmetros de desempenho e garantir o suporte a aplicativos, até mesmo o melhor de nós pode cometer erros que afetam negativamente o resultado e a satisfação do cliente.

Vamos dar uma olhada no Erro bobo n.º 5 que pessoas inteligentes fazem ao testar sistemas de cabeamento de rede —esquecer-se de habilitar dados de plotagem


Tips for Taking on the Top Tier of Fiber Testing

Unlike required Tier 1 testing for attenuation (insertion loss), length and polarity that can be achieved with an optical loss test set (OLTs), few technicians in the field find themselves faced with Tier 2 testing and the need for an Optical Time Domain Reflectometer (OTDR).

But every now and then, there is that one customer or consultant who specifies Tier 2 testing—especially as fiber networks have ever-tighter loss budgets and less room for error. Or there may be the need to gain more insight into the performance of a link component for troubleshooting purposes.


What’s going on with ISO/IEC 14763-3?

ISO/IEC 14763-3 edition 2 was published in 2014. This standard supports the implementation and operation of customer premises cabling by specifying systems and methods for inspecting and testing optical fiber cabling. In 2015, a corrigendum was published.  Currently, an amendment is under review to make further corrections. Also, a supplement to the amendment was added.


Erro bobo n.º 9: Baseando-se em um testador duplex para certificar troncos MPO

Enquanto as pessoas inteligentes que instalam, testam e certificam instalações de cabeamento de rede sabem a importância do cumprimento das normas, parâmetros de desempenho e garantir o suporte a aplicativos, até mesmo o melhor de nós pode cometer erros que afetam negativamente o resultado e a satisfação do cliente.

Vamos dar uma olhada no Erro bobo n.º 9 que pessoas inteligentes fazem ao testar sistemas de cabeamento de rede —baseando-se em um testador duplex para certificar troncos MPO.


Erro bobo n.º 4: "Improvisar" na conformidade de Alien Crosstalk

Enquanto as pessoas inteligentes que instalam, testam e certificam instalações de cabeamento de rede sabem a importância do cumprimento das normas, parâmetros de desempenho e garantir o suporte a aplicativos, até mesmo o melhor de nós pode cometer erros que afetam negativamente o resultado e a satisfação do cliente.

Vamos dar uma olhada no Erro bobo n.º 4 que pessoas inteligentes fazem ao testar sistemas de cabeamento de rede — "Improvisar" na conformidade de Alien Crosstalk.

No gancho ou fora dele?


Get the Warranty the First Time Around

Virtually all of your customers are going to want the system warranty offered by their cabling manufacturer. It also lowers risk for architects, consultants and engineers by proving that the system meets the intended performance to support the customer’s applications, while helping to avoid finger pointing and callbacks that are every contractor’s worst nightmare. A system warranty is essentially your best insurance policy.


Best Practices for Cleaning Up Your Fiber Cleaning

While it seems we can’t drive the point home enough that the number one cause of fiber network issues and failures is contaminated connectors, we hope by now that all fiber technicians at least know that they are SUPPOSED to clean and inspect every fiber end face before making that final connection.

But are you cleaning those fiber end faces correctly? Let’s take a look at some best practices.


Erro bobo n.º 10: Destacando-se na inspeção adequada da fibra

Enquanto as pessoas inteligentes que instalam, testam e certificam instalações de cabeamento de rede sabem a importância do cumprimento das normas, parâmetros de desempenho e garantir o suporte a aplicativos, até mesmo o melhor de nós pode cometer erros que afetam negativamente o resultado e a satisfação do cliente.

Vamos dar uma olhada no Erro bobo n.º 10 que pessoas inteligentes fazem ao testar sistemas de cabeamento de rede —destacando-se na inspeção de fibra adequada.


Is Your Network Ready for Collaborative Open Office Environments?

Today’s office environments are changing drastically in regards to where and how people work. Gone are the days of segregated work areas for each employee with siloed spaces featuring strictly wired connections for a computer and a phone.

Companies today are striving for more open, harmonious work environments and taking advantage of new trends such as collaborative work spaces, BYOD and a combination of work-from-home policies and office hoteling—the practice of reserving work space when needed rather than assigning permanent spaces to employees.


Be in the Loop about Smarter Bidirectional Testing

When it comes to Tier 2 testing using an OTDR, measuring the loss of specific events like connectors and splices, as well as overall link loss, depends on the direction in which the measurement is made.


Is your cabling ready for next-generation Power over Ethernet?

IEEE 802.3bt continues to specify higher power levels to be delivered along cabling that was traditionally designed for purely data distribution, presenting exciting possibilities for the future, however PoE is only part of today’s bigger picture regarding how we are transmitting power.


Are you really checking for DC Contact Resistance issues?


Testing Wide band Multimode Fiber

Multimode fiber (MMF) dominates in local area networks and data centers. Electro-optic converters (e.g. transceivers) used for transmitting and receiving data are less expensive than those used for transmitting over single-mode fiber. Network capacity has increased over the years through the use of parallel transmission – using multiple fibers and multiple transceivers. As the need for capacity continues to increase, the use of multiple fibers and multiple transceivers needed for parallel transmission may increase network cost.


The Golden Rule of Fiber Inspection Keeps Up with the Times

Contaminated connections remain the number one cause of fiber related problems and test failures in data centers, campus and other enterprise or telecom networking environments.


Standard Update: 25GBASE-T Joins the Party!

Since the development of 40GBASE-T (IEEE 802.3bq) began a few years ago, most of us believed that the next Ethernet data center speed for twisted-pair copper cabling beyond 10 Gb/s would be 40 Gb/s.


The Best Just Got Better—at Both Ends

How long are the fiber links you need to test? Is it a short 50-meter multimode data center link, a longer 550-meter backbone, or maybe even a 130-kilometer singlemode link?

With contaminated connections remaining the number one cause of insertion loss and back reflection that inhibits optical transmission and causes havoc with expensive transceivers, it’s vital that fiber end-faces at both ends of a link are visually inspected.


Help! My Copper Cabling Link Failed

You’ve just finished a copper cabling installation for a customer, your DSX-5000 CableAnalyzer is properly configured and you’re ready to start testing. With a press of the “TEST” button, you’re off and running.

Link after link, the tester displays a “Pass” and you’re feeling really good about the quality workmanship of your installation.


Certification vs. Qualification: A Closer Look

cer·ti·fy \ˈsər-tə-ˌfī\ verb 1: to attest authoritatively  2: to officially recognize someone or something as possessing certain qualifications or meeting certain standards

qual·i·fy \ˈkwä-lə-ˌfī\ verb 1: to have the necessary skill or knowledge to do a particular job or activity  2: to have the qualifications to do something


Fluke Networks homenageada pelo 2015 Programa de prêmios para inovadores da Cabling Installation & Maintenance

Last week at the opening of the BICSI Conference in Las Vegas, the editors of Cabling Business Magazine announced that Versiv and LinkWare Live have each won the Cabling Installation and Maintenance Innovator’s Award. These awards recognize the most innovative projects and products in the structured cabling industry. A Comissão Julgadora consistia de especificadores, designers, integradores e gestores de sistemas de cabeamento e comunicações com vasta experiência profissional.


What is Your Loss Measurement Uncertainty?

Testing structured fiber cabling to international standards such as ISO/IEC 14763-3 has been defined. In the last few years, the question of loss (attenuation) measurement uncertainty has been raised. Since 14763-3 specifies test limits, the user of the standard may need to know the amount of uncertainty in the measurement. Experts from IEC, well-versed in fiber metrology and uncertainty calculations, were requested to provide simplified guidelines, a table of sorts, that a user such as an installer might find useful.


Tier 1 Testing using an OTDR on Installed Fiber Cabling?

The Telecommunications Industry Association (TIA) is committed, by formal consensus, to develop standards for the benefit of industry and is represented by hundreds of companies. While participating companies cooperate to develop standards, each have their commercial business interests to protect. Sometimes, these companies over-reach to meet their business goals. Fortunately, the TIA voting and balloting process works well as a means to check and balance sometimes rogue proposals.


Testing Installed Fiber Cabling Terminated with MPO Connectors

Several published standards describe how to perform attenuation measurements on installed fiber optic cabling. However, no standard exists that provides guidance for testing installed fiber optic cabling terminated with MPO connectors. Currently, a technical report (TR) is being drafted that provides such testing guidance.


What You Need to Know About Testing BIMMF

Developed for use in data centers and enterprise network applications with a very tight loss budget, bend insensitive multimode fiber (BIMMF) is able to withstand tighter bends with substantially less signal loss than non-BIMMF.

A BIMMF design tightly confines the higher-order modes that are more likely to escape the fiber core during bending. The design achieves this by adding a specially engineered optical “trench” between the fiber core and cladding.


HOML as a Source Qualification Test

TIA adopted IEC 61280-4-1, the standard defining attenuation measurements of installed multimode fiber cabling, as ANSI/TIA 526-14-C.

In IEC 61280-4-1, the encircled flux launch is defined as normative (required) for these cases and there is no intention to change requirements in the next edition:
Case 1 - 50 μm core fiber at 850 nm,
Case 2 - 50 μm core fiber at 1300 nm,
Case 3 - 62,5 μm core fiber at 850 nm,
Case 4 - 62,5 μm core fiber at 1300 nm.


Revision to IEC 61280-4-1 Ed 2,0, Fibre-optic communication subsystem test procedure – Part 4-1: Installed cable plant – Multimode attenuation measurement

This primary international standard provides guidance for measurement of attenuation using power meters, light sources and OTDRs on 50/125 µm and 62,5 µm multimode fiber cabling that may include connectors, adapters and splices. Various test methods and cabling configurations are described. This report gives important information regarding upcoming changes for anyone needing to specify testing. Architects, Consultants and Engineers may use this information to learn of changes in IEC, anticipate customer concerns and gain insight to cabling testing trends.


Standards Update: The Four A’s of Harmonization

With ANSI/TIA being a North American standards body and ISO/IEC considered international, some often question why we need both, especially considering the similarities between the two.

But there are also plenty of differences—from terminology and spelling, to policy and codes. The good news is that with technology having made our world a much smaller place, TIA and IEC are fast at work harmonizing standards.


The End of Era: Saying Goodbye to DTX

The year was 2004. The hottest mobile device was the Motorola Razr flip phone, Pierce Brosnan was still able to pull off a James Bond role, Facebook was a website nobody’s parents knew about, and The Red Sox won the World Series. It was also the same year that Fluke Networks introduced the DTX CableAnalyzer.


Standards Update: Copper on the Move

In the 2009/2010 timeframe, copper standards got a lot of attention with the publication of the TIA-568-C standards and ISO 11801 2nd edition for 10-gigabit copper cabling, as well as IEEE 802.3at for PoE Plus.

While more applications and devices continue to take advantage of that technology, there has been plenty of standards development action taking place behind the scenes that is keeping copper on the move.


Standards Update: The Four A’s of Harmonization


With ANSI/TIA being a North American standards body and ISO/IEC considered international, some often question why we need both, especially considering the similarities between the two.

But there are also plenty of differences—from terminology and spelling, to policy and codes. The good news is that with technology having made our world a much smaller place, TIA and IEC are fast at work harmonizing standards.


New DSX-5000 Endorsements: Eurolan & Furukawa Industrial S.A.

We’re very excited to announce that two more manufacturers have endorsed the DSX-5000 this month! Eurolan has over 1.000 certified installers and engineers, and is a major supplier in Russia and the CIS countries. Furukawa Industrial S.A, is a major supplier with Centre of Excellence for Latin America in the manufacture of optical and metallic cables and has over 37 years of history in Brazil . This brings the total of number of manufacturers worldwide who have provided their endorsement to: a whopping 26!


Slash Fiber Job Completion Time with New Fiber Testing and Certification Tools

The datacom industry is fast adapting an “all-for-fiber, fiber-for-all” mantra. Fiber developments and growth are everywhere, from high-speed data centers to bandwidth-hungry enterprises to Google Fiber. 


No More “Dang It!” moments – Analyze and Manage Copper or Fiber Test Results Anytime, Anywhere

At Fluke Networks, we take test and measurement seriously. Proving that point, we recently announced the world’s first cloud-connected cable certification tool. That’s right, we unveiled LinkWare™ Live, a cloud-based service that enables contractors, cable installers and project managers using the Versiv™ family of certification testers to upload, manage, and analyze certification test results from cabling projects – anytime, anywhere.


Introducing the Versiv Family Yearbook: Class of 2014

For most structured cabling professionals, the days of nostalgically flipping through the pages of a school yearbook have passed. But Fluke Networks has introduced the next best thing – The Versiv Family Yearbook: Class of 2014.


Tendências a Observar em 10GBASE-T e no Data Center

Os engenheiros da rede precisam prestar atenção a algumas tendências emergentes na indústria. In a report published earlier this year, “Data Center Switch Long-Range Forecast Report,’ Crehan Research Inc. predicted that the data center switch market will grow to $16 billion by 2017, and Ethernet, including Fibre Channel-over-Ethernet, will become an ever-increasing portion of the overall market.


Prevent Errors, Limit Complexity and Reduce Cost Associated with Cable Certification

Perhaps the last thing a buyer of cable test equipment thinks about when looking for a product is how to prevent testing errors—and that’s a big mistake. While issues such as cost, standards and specifications including bandwidth and test speeds are important, decision makers should not ignore the issues of project errors and the subsequent delays they can cause.


A importância da verificação de ETL

  If you’re in the cable testing business, you should know about ETL Verification.


New Infographic on What's Really Going On in the Minds of Structured Cabling Professionals

You're deep in the trenches of cabling projects everyday, ensuring cleanliness, testing links and troubleshooting problems when they arise.


Um novo testador para o novo normal: Apresentando a Família Versiv de Ferramentas de Certificação

Termos como virtualização, nuvem, SLA, SANs, SaaS e BYOD são comuns no mundo tecnológico atual.


Software gratuito para o gerenciamento de teste de cabos - Colhendo os benefícios do LinkWare™

Testar as plantas de cabeamentos avançadas de hoje é algo tão complexo que um único relatório de teste da categoria 5e pode incluir mais de 400 campos de dados. Com trabalhos típicos incluindo centenas e até milhares de links, mesmo se os engenheiros de rede examinarem todos os resultados e determinarem que todos estão aprovados, ainda restam perguntas críticas: Como você pode dizer com facilidade se uma especificação de teste incorreta foi utilizada? Todos os testadores estavam usando o software correto? Você obteve as margens esperadas e elas foram consistentes?


Como aumentar a exatidão do teste Multimodo com fluxo fechado

Anyone who’s ever tested a multimode fiber optic link with light sources from different equipment vendors will know that the loss measurement can vary by as much as 50 percent. Sem controles apropriados, as fontes luminosas multimodo injetarão a luz de maneira diferente em fibras multimodo.   Mesmo as fontes luminosas do mesmo fabricante sob diferentes condições iniciais produzirão resultados diversos das medidas das perdas no link, levando a resultados diferentes e frequentemente confusos.


Fluxo fechado - o que é, e porque você deve se importar?

Com a introdução de componentes de fibra óptica com pequenas perdas tais como gavetas de LC/MPO, orçamentos de perda (limites de testes) estão tornando-se cada vez menores. Em consequência, os instaladores estão descobrindo que os métodos e as suposições antigos sobre o teste de fibra já não são mais verdadeiros.

Quando a Associação da Indústria das Telecomunicações (TIA) ainda permite 0,75 DB por conetor, os conectores polidos de fábrica aproximam-se de 0,2 DB. Assim ao testar aos limites da TIA, os instaladores encontram um tanto de incerteza com relação às medidas. Ou seja suas práticas de teste precisam de ser razoáveis, mas não perfeitas.


Finding the keys to success in the MPO datacenter

Enquanto as empresas tentam assimilar a demanda crescente no tráfico IP para suportar uma disposição crescente de aplicações de negócio, muitas estão projetando seus centros de dados com redes de fibra óptica que suportam conexões de 10G ou conexões Ethernet 40G entre os servers, switches e redes de área de armazenamento, e Ethernet 100G para conexões do switch principal e roteamento backbone


Need to test MPO cabling? Não tem problema! -New MultiFiber Pro Optical Loss Tester reduces test time by 95%


LinkWare 7 –A good thing just got a lot better!

What do Albert Einstein and Michael Jordan have in common?  No, they’re not both LinkWare users… They focused on continuously learning and pushing the envelope even though they were already far ahead of everybody else. Just like our engineers who worked tirelessly to rebuild LinkWare from the ground up and make the best even better. Improvements include:


This one is for the ages! New OTDR redefines enterprise fiber testing.

By now you will have heard about the new OptiFiber Pro OTDR  and that’s a relief for me because I’ve been biting my tongue for a while!  Now that its been announced, let me share my impressions and an overview of what makes the product unique.  I will also include some links to more detailed information.  Take this from a guy that has spent five of the last seven years playing with OTDRs… I’ve used them all.  And this one is going to change everything!


For the Good Times. -Looking back on the DSP Series one year after the retirement of repair and calibration services.

The end of March marks one year since calibration and service was available for the DSP 4300, and an end of an era for technicians certifying cabling with the Series.  It was a long love affair. The DSP 100 was the first of the Series. It was introduced in 1995. That year the DVD was selected as the home video format, a gallon of gasoline cost $1,09, and we all had to undure the infamous OJ Simpson trial.


Would you fight this speeding ticket? The 10% rule explained.

Ironically my desire to speed in traffic evaporated when I bought a real sports car.  But this story is not about me and my desire to push the limits.  It’s about you.



I received my new RCDD certificate, good through the end of 2014, in the mail last week. My reaction was more pensive than the elation I experienced after first passing the exam in 2003.


Why a Cat 6A Patch Cord Adapter has that funny little “A” next to the 6

If you’ve seen a set of Category 6A  Patch Cord Test Adapters, you may have wondered why the “A” is subscripted.  It has to do with the standards that the adapters support. The little “A” denotes that the adapter meets the ISO/IEC specifications for a patch cord test.


VoIP for the masses…the end of “voice grade cabling”

When I was a cable installer, we often built redundant networks for voice and data communications.  The data cabling was terminated on patch panels, and the voice grade cabling was terminated on wiring blocks. There are thousands of installations done this way.  And there were lots of reasons for it, including cost.  But I think the major reason we kept installing separate “voice grade cabling”  was that , deep down, the key influencers of cabling installation design didn’t believe that the end of voice circuits  would ever happen.

Product Registration...Whats the point?

I don't register products that I buy.  I am not worried about another email or phone call, black helicopters, or any of that.  It's just that most of the stuff I purchase isn't worth the effort to fill out a form, find a stamp, and mail it to the manufacturer.  And like you, I am really busy with other tasks that seem more important.  For example, by the time I got ready to mail the registration form in for my Bose headphones, the only apparent benefit (the rebate) had lapsed.  So am I a hypocrate to sa


The Truth about Twisted Pair Patch Cords

Non compliant cabling products have been the subject of magazine articles, discussions at conferences, publicized lawsuits, and government agency investigations during the last few years.

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