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.
If you’ve turned on the news in the past couple of months, or if you live anywhere in the southern or central U.S., you’re well aware that natural disasters are at an all-time high – from recent tornadoes that have stretched from Texas north to Minnesota and east to Pennsylvania, to the swelling Missouri, Mississippi, Arkansas and Ohio Rivers and their tributaries causing flooding in nearly two-thirds of the country.
Earlier this year, the IEEE released its 802.11ax Enhancements for High Efficiency Wireless (HEW) LAN standard, known commonly as Wi-Fi 6. This new advanced Wi-Fi application is positioned to theoretically deliver close to 10 Gig transmission through the use of eight spacial streams that each transmit at 1.2 Gb/s compared to Wi-Fi 5 (802.11ac) at just 866 Mb/s per special stream. It also has the ability to operate in both the 2.4 GHz and 5 GHz bands.
In response to the need for higher density in data centers, a couple of new fiber connectors have recently been introduced to the market. Because these connectors are new, test equipment with these interfaces has not yet been introduced, which presents some Tier 1 testing challenges and a shift from the traditional recommended 1-jumper reference method. Let’s take a closer look at these connector types and how to test them.
CS and SN Connectors
Last week, Fluke Networks announced that the number of results uploaded to our LinkWare Live cloud service has exceeded 20 million. If you’re one of the many who contributed to the doubling of total results over the past year, you’ve already witnessed the benefits and cost savings of managing cabling certification jobs anytime, anywhere, with anyone on any device.
When it comes to testing twisted-pair cabling, there are some key testing parameters required for certifying a permanent link to industry standards—parameters like insertion loss, NEXT, PSNEXT, ACR-N, PSACR-N, ACR-F, PSACR-F and return loss. And when it comes to testing Cat 6A (or Class Fa for ISO11801 standards), we also have PSANEXT and PSAACR-F for alien crosstalk testing.
When it comes to joining two or more optical fibers together, fusion splicing whereby cleaved fibers are aligned and fused by an electric arc provides the lowest loss and strongest, most reliable joint.
While mechanical splice connectors have come a long way and are an ideal field termination method for connectorizing fiber, we rarely hear much anymore about mechanical splicing as a means for joining fibers along a link – even though it eliminates the need for expensive fusion splicing equipment.
So what ever happened to the mechanical splice anyway?
We all know that Category 6A is considered the highest performing twisted-pair cabling that supports 10 Gig speeds, and it’s been around now for more than a decade. So, you might be surprised to learn that Category 6 (now 17 years old!) continues to dominate worldwide sales of twisted-pair copper cabling. Although declining, even Category 5e that was introduced 20 years ago maintains a significant share of the market.
You’ve probably heard all the buzz about edge data centers. Don’t worry – this doesn’t mean you’ll be testing fiber links while hanging on the side of cliff. But while you might be testing in new spaces, edge data centers won’t really change what you’re already testing.
So what exactly is an edge data center, anyway? Let’s take a closer look.