signals at different frequencies pass through the air at the same time. another example is cable television , in which many television channels are carried simultaneously on a single cable. fdm is also used by telephone systems to transmit multiple telephone calls through high capacity trunklines, communications...
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single high data rate link, then demultiplexed at the other end in telecommunications and computer networks , multiplexing (sometimes contracted to muxing) is a method by which multiple analog or digital signals are combined into one signal over a shared medium . the aim is to share a scarce resource. for...
home / download center / electrical engineering books and technical guides / abb's power system protection practices electrical protection systems electrical power system operates at various voltage levels from v to kv or even more. electrical apparatus used may be enclosed (e.g. motors) or placed in...
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line (dsl; originally digital subscriber loop) is a family of technologies that are used to transmit digital data over telephone lines . in telecommunications marketing, the term dsl is widely understood to mean asymmetric digital subscriber line (adsl), the most commonly installed dsl technology, for...