HSA 4191 Chapter Notes - Chapter 3: Optical Fiber, Microwave Transmission
Document Summary
Creating an information network requires the assembly of a variety of hardware and software components. Early in the process of designing a network, a decision must be made regarding the transmission media to be used. Transmission media carry the signal being transmitted from one location to another, include: metal wires carry electrical signals, fiber-optic cables carry optical signals, air through which radio waves or microwaves travel. Consists of one or more strands of metal. Data are transmitted along the conductors in the form of changing electrical voltages and may be represented as: digital waveform involves the representation of data with binary digits or bits. Integrated services digital network lines, digital subscriber lines (dsl) and the cable in a lan: analog waveform represents data by varying amplitude (height), frequency, and/ or phase of a waveform. Traditional telephone lines: key distinction: analog transmits across a continuous range of values.
