Cinch RCA (Composite, Audio, HDTV Components)

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Colour coding example from a typical set-top box: yellow for composite video (FBAS), a pair of white and red jacks for analogue stereo, and a trio of jacks in red/blue/green for HDTV components

These are used with coaxial cables for many types of electronic signals. The connectors are easily differentiated through the use of colour, as follows:

Colour Use Signal Type
white or black Audio left channel analogue
red Audio right channel, also see HDTV analogue
yellow Video Composite analogue
green HDTV Components Y Luminance with sync-on-green analogue
blue HDTV Components Cb/Pb Chroma analogue
red HDTV Components Cr/Pr Chroma analogue
orange/yellow Audio SPDIF digital
Warning: It's possible to mix up audio SPDIF with composite video connectors, so please always consult your handbook for their proper connection and use. Use of colour for SPDIF isn't always consistent, either. Furthermore, it's possible to switch the red HDTV connector with the right audio channel. HDTV components always appear in groups of three on device panels, so be sure to match them up with three-element cables and connectors.

RCA connectors in various colours for different types of signals

Two types of SPDIF (Digital audito): an RCA/coax connector on the left, and a TOSLINK (optical fibre) on the right

TOSKLINK connector for optical delivery using fibre optic cable for digital SPDIF signals

An adapter from SCART to RCA connectors (Composite-Video, 2x audio, and S-Video)

Glossary

RCA = Radio Corporation of America SPDIF = Sony/Philips Digital Interfaces

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