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07.01.2008		Broadband: Finding Spectrum for Channel Bonding The latest iteration of Data Over Cable Service Interface Specification - DOCSIS 3.0 - has been in the news recently. Several cable modem termination systems (CMTSs) and cable modems have received qualification and certification respectively from CableLabs...
07.01.2008		System of the Year: TWC Carolina This year's search for excellence brought us head to head with the cable equivalent of that line from the English poet about no man being an island, namely: regionalization. It's a strong trend. Not so long ago, isolated cable systems were the norm. Then...
06.01.2008		Broadband: The Mathematics of Field Strength Measurements In July 1991, I penned an article with the same title as this month's column. It was inspired by a call from friend and colleague Ralph Haimowitz, who commented that he had seen a recent paper discussing, among other things, the conversion between microvolts...
05.01.2008		Broadband: Grounding Effectiveness at RF Various codes such as the National Electrical Safety Code (NESC) and National Electrical Code (NEC) - which are often adopted into law by local, county or state governments - mandate grounding and bonding of cable networks. The fundamental purpose of...
03.01.2008		Managing Edge Resources As cable service offerings grow to include richer libraries of on-demand content, expanded choices of entertainment-quality long-tail content, over-the-top user-created video and more, the need to abstract services from the underlying network is an...
03.01.2008		BROADBAND: Transient Voltage Surge Suppression Among the highlights of this year's International Consumer Electronics Show in Las Vegas was Panasonic President Toshihiro Sakamoto's introduction of the company's Life Screen, a concept 150-inch high definition (HD) plasma display panel. At 4,096 x 2,160...
02.01.2008		Broadband: RF CNR vs. Baseband Video SNR If one were to measure RF carrier-to-noise ratio (CNR) and baseband video signal-to-noise ratio (SNR) for the same analog TV channel, how would the numbers compare? This definitely falls into the "it depends" category. Much has been written over the...
01.01.2008		Ethernet Technology: It’s Testing Time To stay competitive, cable operators are going to need to do what every service provider is doing: capture as much of the enterprise services and leased line markets as possible. Already using Ethernet technology to carry traffic on their metro and wide area...
01.01.2008		A Delicate Balance: Alternatives for Multi-Wavelength Systems Node splits and node segmentation are among the tools available to cable operators to deal with seemingly ever-increasing bandwidth demands and plant extensions. But how can a node be segmented when there is not enough fiber in the outside plant? Overlashing...
11.01.2007		DOCSIS Migration Methodology The DOCSIS network is continuing to be pressed to deliver more throughput and speeds as more users and services are added. Without a systematic way to analyze and plan the upgrades, this process can be costly and time consuming. It's possible, however, to...
10.30.2007		Troubleshooting Digital Just because the world is going digital, cable operators can't forget about analog signals and the "gremlins" that affect them. This was a common thread woven throughout "Troubleshooting Digital Services Node to Tap," a recent webinar...
10.01.2007		Give Me Your Bond Within the United States, nearly every state and most local governments have adopted the National Electrical Code, commonly referred to as the NEC and published by the National Fire Protection Association, as the local electrical code. Articles 820 and 830 of...
10.01.2007		Broadband: A Closer Look at BER, Part 1 I'm occasionally asked about BER, one of several performance metrics used in the world of data transmission. Quadrature amplitude modulation (QAM) analyzers commonly report BER, as do some digital set-tops and cable modems. BER is an abbreviation for bit...
09.01.2007		More Top Tiers Comcast Boston, an award-winning voice services provider, and Cablevision, the aggressive multiple system operator (MSO) engineered as a single system, join Midcontinent Communications (profiled last month) as this year's Top Tier Systems. All three share the...
08.01.2007		Engineering Practices Key to Midcontinent's Successes Midcontinent Communications won a Top-Tier System award from Communications Technology this year, but it could also garner the Good Housekeeping Seal of Approval for the work the engineering staff does on preventive maintenance. Midcontinent's preventive...
08.01.2007		CT's System of the Year: Cox OC Communications Technology’s 2007 System of the Year is Cox Communications in Orange County and Palos Verdes, CA. CT Editor Jonathan Tombes helped honor the system at the annual Cable-Tec Expo Awards luncheon in Orlando. In this video, Jonathan...
07.06.2007		DOCSIS 3.0: Feature Set • COMMUNICATIONS TECHNOLOGY'S DOCSIS 3.0 VIDEO SERIES, PART 3 - click here for PART 1 and here for PART 2. Communications Technology and sponsor Texas Instruments held a panel discussion —  DOCSIS 3.0: Offense or Defense? — at the 2007...
07.01.2007		Leading Generations The face of the industry's front line certainly has changed. The work jeans are baggier and definitely have more pockets than they used to. The fresh-faced, young techno-savvy men and women have more tattoos and piercings than they used to, as well. They...
07.01.2007		Digital Transmission, Part 2 Modulation error ratio (MER) is digital complex baseband signal-to-noise ratio (SNR) - in fact, in the data world, the terms "SNR" and "MER" are often used interchangeably, adding to the confusion about SNR, especially considering that, as...
06.29.2007		DOCSIS 3.0: Strategy • COMMUNICATIONS TECHNOLOGY'S DOCSIS 3.0 VIDEO SERIES, PART 2 - click here for PART 1. Communications Technology and sponsor Texas Instruments held a panel discussion —  DOCSIS 3.0: Offense or Defense? — at the 2007 Cable Show in Las...
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