When developing a new networking standard, several attributes need to be balanced to optimize its implementation. To optimize the implementation of 40GBASE-T, the task force developing the standard (IEEE P802.3bq) appears to have settled on a reach of 30 meters. This is a tradeoff between power dissipation of the silicon physical layer (PHY) IC driving the cable, the complexity of the PHY which would impact cost, the implementation of the channel, and the reach of the link.
The question is: Is 30 meters long enough? Let’s take a look.
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Hospitals, clinics, extended care facilities, and physicians’ offices are facing increasing pressure to improve the quality of healthcare while decreasing costs. In response, health care providers are adopting greater use of electronic medical records, automated equipment and building automation systems. As a result, the number of users requiring network access through the use of portable and mobile devices such as handheld units and laptops to manage patient records, monitor clinical applications and reference workplace requirements is extending the need for campus wide network access.
Wireless is a growing part of the industrial manufacturing landscape to connect from enterprise to plant. Have you considered how standard wireless technology has advanced to be much more capable and able to deliver a clearer picture of what is happening for hard to reach devices in manufacturing plants?
You’ve probably noticed that your iPhone takes some pretty good pictures. Detailed, bright, featuring stark contrasts between different colors that make each light in a city’s skyline stand out.
Some of these crisp photos are the product of high-dynamic-range (HDR) imaging. Instead of taking a single picture at single exposure level with a limited contrast range like in normal camera, the iPhone’s HDR camera takes multiple pictures of the same image at different exposure levels. Then, it pieces these pictures together to create a photo that more accurately captures the level of detail and color intensity found in the actual scene, closer to the image seen by the human eye.
A converged fabric based on Fibre Channel over Ethernet (FCoE) helps data center architects and managers reduce CAPEX, OPEX, while simplifying the network infrastructure. Up until recently, there was something hindering the adoption of FCoE: 10GBASE-T.
Historically, deploying FCoE on the links between servers and aggregation switches meant that one had to use optical fiber or Direct Attach Copper (DAC) cable assemblies. The first generation of aggregation switches that supported 10GBASE-T did not support FCoE. Additionally, 10GBASE-T Ethernet server adapters did not support FCoE as well, and FCoE was only available with Converged Network Adapters (CAN) that supported the SFP+ form factor. That meant one could implement ToR architectures with FCoE using DAC cable assemblies or other architectures using optical fiber for longer distances.
I would like to introduce Ken Sandfeld from SOLiD, our guest author this week. Ken is the Executive Vice President at SOLiD, leading the go-to-market and product strategy activities for network densification solutions. He has over 17 years of experience in the wireless infrastructure industry and is passionate about bringing innovative technologies to market. Thank you Ken, for your valuable time and input this week!
DAS Matters Now More Than Ever
As a manufacturer of indoor and outdoor wireless network densification solutions, we keep a bird’s eye view of the industry to spot market and technology trends. So it was with keen interest that we observed multiple articles and reports originating from the recently-concluded Mobile World Congress touting the comeback of DAS or Distributed Antenna Systems.
Really? We didn’t know DAS was purportedly on the outs.
Jeff Mehrer, Panduit Solutions Director, Industrial Construction
One of the greatest challenges for an electrical contractor is the coordination of product flow from the suppliers to the project site. This is a direct result of the industry’s difficulty in projecting future demand based on the variability and real-time dynamics of a job site.
Industry numbers* show that only 60% of labor hours are spent on productive, direct installation. Meanwhile, 40% of labor hours are consumed by “un-productive” material handling activities. This translates to 17% of revenue dollars slipping through the fingers of the average contractor. *Agile Construction for the Electrical Contractor
One of the core issues affecting the performance and reliability of industrial control systems is electrical noise. It can cause field device misreads; devices to fail, reset, or enter a fault state; equipment damage; or signal retransmission that inflicts communication delays. The topic of mitigating performance issues caused by electrical noise is wide ranging, but we’ll look at three topics here: the types of Electrical Noise, the types of problems caused, and a multilayered approach to EMI noise mitigation.
The devil is in the details. This is true for many endeavors, particularly when building out a data center’s physical infrastructure. Given the scope and investment of the entire data center project, the physical infrastructure can seem relatively minor. Missing some important details however, can have a significant impact on installation schedules, and your job…who wants to explain why a new service or application is delayed because a minor component doesn’t fit right or didn’t arrive on schedule? Missing details can also impact network performance when work-arounds, done for the sake for expediency, lead to operational problems or worse….after the data center has been commissioned.
Fred Dorman, Global Solutions Manager, Business and Channel Development
It can be surprising how many control panels, motor control centers and power distribution terminal blocks are wired incorrectly and in violation of UL508A.
Typically, electricians choose to work with flex stranded conductor cable because it is easier to route, bend and pull into place when power connections are needed than rigid conductor cable Continue reading →