These numbers represent a mathematical model of the original signal. When copied, they do not degrade as an analog signal does. This digital stream is can be recorded onto magnetic media. Theoretically, this process should eliminate generation loss since every copy is an exact duplicate of the original. In reality, digital systems are not perfect and can introduce their own problems in maintaining the original signal.
Digital signals are virtually immune to noise, distortion, crosstalk, and other quality problems.
An international connector standard. DIN connectors carry both audio and video signals and are common on equipment in Europe. Used to duplicate one videotape to any number of VCRs with minimal loss of signal strength. A camera platform on wheels. To dolly is to smoothly bring the camera closer or farther from the subject.