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What is the voltage of composite video?

Published in Video Standard 1 min read

The typical voltage for a composite video signal is 1 volt peak-to-peak (1V p-p).

Composite video is a standard analog video format that carries all the video information (luminance, chrominance, and sync signals) combined into a single signal. Understanding its typical voltage level is crucial for proper connection and signal transmission.

According to standard specifications:

  • Typical Voltage: The composite video signal is typically a 1-V peak-to-peak sinusoidal signal.
  • Impedance: This signal is transmitted into a standard 75 Ω cable (commonly coaxial cable).

This 1V p-p level is designed to work effectively over the 75-ohm impedance of the cable, ensuring the signal maintains sufficient strength and integrity for a good picture quality, depending on the signal-to-noise ratio (SNR). A higher SNR generally results in a better picture.

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