The ARRL Image Communications Handbook

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Language: English

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DVRs and HD-DVRs should be available that deliver digital and HD channels as well as extra features like the ability to record/store programming and pause live TV. For example, with fiber, an optical time domain reflectometer (OTDR) can be used to detect the position of splices that could be the result of unwanted intrusion. (Some techniques allow you to tap into a fiber cable without splices, but they are extremely costly and largely available only to government security agencies.) Finally, you need to consider three types of costs associated with the media types: acquisition cost (e.g., the costs of the cable per foot [meter], of the transceiver and laser diode, and of the microwave tower), installation and maintenance costs (e.g., the costs of parts as a result of wear and tear and environmental conditions), and internal premises costs for enterprises (e.g., the costs of moves, adds, and changes, and of relocating workers as they change office spaces).

Pages: 0

Publisher: Amer Radio Relay League; 1st edition (December 31, 2002)

ISBN: 0872598616

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