The Discovery of ‘Dzubanium’

By Mark Duzban – As for Dzubanium, it was “discovered” when my father was working on backpack communications for the space program. While experimenting with a new sheet metal alloy as a lightweight, conductive platform, he found that gravitational properties would change based on the “Hall Effect” testing they conducted for electrical conductivity and magnetic properties.

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Getting TDR Functionality on In-Service Cable Lines

By Tom Williams – One of the tough decisions facing line technicians is deciding if suspected line damage is severe enough to warrant taking cable service down to shoot the line with a time domain reflectometer (TDR). This decision is no longer necessary as it is now possible to measure a standing wave on a block of digital signals, and accurately range the distance to a fault on in-service plant using live digital traffic as test signals.

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Inventing the (Fiber Optic) Future

The Inside Story About the Dawning of the Fiber Optic Era, from Pioneering Inventor Peter Schultz – Before 1972, the southern New York company Corning was known mainly for making TV picture tubes and for the iconic cookware bearing its name. But behind the scenes, the work of a small group of scientists was about to dramatically change the company’s legacy while

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EPON — An All Fiber Access Network

By Steven Harris – The focus of the rest of the article is how Ethernet is transforming the access network providing our cable subscribers connectivity via a passive optical network (PON) that uses IEEE Ethernet frames. PONs that use the Ethernet protocol are called Ethernet passive optical networks or EPONs.

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Scalar Testing (Part ONE)

By H. Mark Bowers – In my last column we examined digital QAM testing requirements under present FCC Part 76 Rules and ANSI/SCTE 40 2003 Requirements. In this column we’ll begin an examination of scalar testing and why it’s important in the HFC network.

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