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.
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.
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.
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.
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.
ANSI/TIA ist eine nordamerikanische Normungsorganisation, während ISO/IEC als international betrachtet wird, und es wird häufig die Frage aufgeworfen, warum wir beide brauchen, vor allem angesichts der Ähnlichkeiten zwischen den beiden.
Aber sie weisen auch viele Unterschiede auf — von Terminologie und Rechtschreibung über Richtlinien bis zu Verhaltensregeln. Die gute Nachricht ist, dass TIA und IEC schwer daran arbeiten, die Normen zu harmonisieren, die die Technologie die Welt viel kleiner gemacht hat.
Es war im Jahr 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.
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.
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!
Die Datacom-Industrie nimmt die Mantra „Alle für Glasfaser, Glasfaser für Alle" mit hoher Geschwindigkeit an. Entwicklung und Wachstum von Glasfaser sind überall, von Hochgeschwindigkeits-Rechenzentren über bandbreitenhungrige Unternehmen bis zu Google Fiber.