video frequency - определение. Что такое video frequency
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Что (кто) такое video frequency - определение

ELECTRONIC SYSTEM FOR GENERATING ANY OF A RANGE OF FREQUENCIES
Frequency Synthesiser; Frequency synthesiser; Frequency synthesis
  • Philips TDA6651TT - 5 V mixer/oscillator and low noise PLL synthesizer for hybrid terrestrial tuner

video frequency         
VIDEO BANDWIDTH IN TELECOMMUNICATION
Video frequency bandwidth; Video bandwidth; Video frequency
¦ noun a frequency in the range used for video signals in television.
VF bandwidth         
VIDEO BANDWIDTH IN TELECOMMUNICATION
Video frequency bandwidth; Video bandwidth; Video frequency
In broadcast television systems, VF bandwidth, video bandwidth or more formally video frequency bandwidth is the range of frequencies between 0 and the highest frequency used to transmit a live television image. The maximum frequency can be found by multiplying three figures; the number of frames (images) per second, number of lines per frame and maximum number of sine periods per line.
Frequencies         
  • Diagram of the relationship between the different types of frequency and other wave properties.
  • Complete spectrum of [[electromagnetic radiation]] with the visible portion highlighted
  • Modern frequency counter
  • Hz]]
  • The [[sound wave]] spectrum, with rough guide of some applications
NUMBER OF OCCURRENCES OR CYCLES PER TIME
Wave period; Frequencies; Period (physics); Frequency (wave motion); Frequency dependence; Oscillation frequency; Frekvens; Periodic time; Frequency measurement; Period (frequency); Temporal frequency; Repetition frequency; Occurrence frequency; Event frequency; Oscillation rate; Repetition rate; Occurrence rate; Event rate; Rate of occurrence; Rate of repetition; Rate of oscillation; Wave frequency; Ordinary frequency; Aperiodic frequency
·pl of Frequency.

Википедия

Frequency synthesizer

A frequency synthesizer is an electronic circuit that generates a range of frequencies from a single reference frequency. Frequency synthesizers are used in many modern devices such as radio receivers, televisions, mobile telephones, radiotelephones, walkie-talkies, CB radios, cable television converter boxes, satellite receivers, and GPS systems. A frequency synthesizer may use the techniques of frequency multiplication, frequency division, direct digital synthesis, frequency mixing, and phase-locked loops to generate its frequencies. The stability and accuracy of the frequency synthesizer's output are related to the stability and accuracy of its reference frequency input. Consequently, synthesizers use stable and accurate reference frequencies, such as those provided by a crystal oscillator.