Blogue : Chronique de câblages |

Chronique de câblages



With the Internet of Things (IoT) and the development of sensor technology, more and more devices are becoming IP enabled and connecting to the copper horizontal cabling infrastructure. Most of these devices such as LED lights, security cameras, building automation controls, and Wi-Fi access points include an integrated RJ45 port for connecting to the network.


If you ever attended a Standards meeting you might have heard the word “harmonization” mentioned frequently. The idea of harmonization, somewhat of a holy grail, is to have standards from different organizations agree. For example, imagine if the TIA, IEC, and ISO/IEC organizations used the same test standard. Actually, there is nothing to stop them – TIA frequently adopts IEC standards. However, I am not aware of IEC or ISO/IEC adopting a TIA standard.


Fiber optic cabling comes in two types – multimode and singlemode. Most of you likely know that multimode cabling distances are shorter than singlemode, and singlemode is therefore deployed for outside plant long-haul fiber applications, while multimode is the primary choice for data centers and premise applications.


For professional contractors and installers of data communications cabling systems, compliance with ANSI/TIA 606-B Standards updated back in 2012 has required new levels of precision in cable labeling – often an arduous and time-consuming process for cable installers. Today, however, thanks to smart, cutting-edge cable labeling tools and technologies, that situation has improved dramatically!

606-B Compliance…and a Whole Lot More


It seems like just yesterday we were talking about spring cleaning, and now we’re moving into the dog days of summer. And it’s hot.


Dans la version de 2014 des normes ISO/CEI 14763-3, tests de câblage à fibre optique, des tests unidirectionnels sont requis pour les liaisons permanentes. Dans des cas spécifiques, des tests bidirectionnels sont nécessaires. Toutefois, la norme ISO/CEI 14763-3 ne fournit aucune information sur la façon dont un test bidirectionnel doit être effectué, cet article vient détailler la méthode à employer.

Quand des tests bidirectionnels sont requis


Le test et la caractérisation d'une liaison permanente avec un OTDR requièrent la mesure des affaiblissements du connecteur A/B et de l'affaiblissement de signal des fibres optiques C. Pour effectuer ces mesures, un câble d'amorce et de réception sont requis (voir la figure 1).


Polarity defines direction of flow, such as the direction of a magnetic field or an electrical current. In fiber optics, it defines the direction that light signals travels through an optical fiber.

To properly send data via light signals, a fiber optic link’s transmit signal (Tx) at one end of the cable must match the corresponding receiver (Rx) at the other end.


Powered By OneLink