It allows you to simply plug in peripherals (TV) that have analog audio/video functions using a 21-pin connector.

There are three types of connectors : the plug on the devices, the male/male cord and the extension cord.
SCART connectors are more often encountered (péritel) on equipment marketed in Europe.

Today analogue television is being replaced by digital television; it allows access to high definition; SCART (péritel) which was therefore mandatory on televisions since 1980, is replaced by HDMI

HDMI

HDMI is a fully digital audio/video interface that transmits uncompressed encrypted streams. HDMI is used to connect an audio/video source (DVD player, Blu-ray player, computer or game console) to a high-definition TV.
HDMI supports all video formats, including standard, improved, high-definition definition and multichannel sound. HDMI encapsulanses video data by TMDS. Initially, the maximum HDMI transmission tau w

. The scart no longer exists since the end of 2014.

Pin 8 exploits the slow switching signal from the source, which switches the video input as well as the type of video signals to be used :

- 0 V means "no signal", or internal signal (example : current operation of the TV);
- +6 V means : selection of the auxiliary audio/video input and 16 : 9 aspect ratio (technical evolution after the original standard);
- +12 V means : selection of auxiliary audio/video input and 4/3 format.

Pin 16 is a signal from the source, which indicates whether the signal is RGB or composite :
- 0 V to 0.4 V composite;
- 1 V to 3 V (nominal 1 V peak) RGB only.
Pin 16 is called fast switching :
It can be used to embed the RGB signal within another video signal : Teletext and captioning.
The video bandwidth allowed on fast switching is 6 MHz.

The use of this plug is only of interest for screens that can be satisfied with a low definition (about 800 × 600).
For higher definition displays, it is useful for connecting all products without an HDMI

HDMI

HDMI is a fully digital audio/video interface that transmits uncompressed encrypted streams. HDMI is used to connect an audio/video source (DVD player, Blu-ray player, computer or game console) to a high-definition TV.
HDMI supports all video formats, including standard, improved, high-definition definition and multichannel sound. HDMI encapsulanses video data by TMDS. Initially, the maximum HDMI transmission tau w

jack (e.g. an analog VCR, VHS type).
For high-definition digital devices, it is necessary to check that they have an HDMI

HDMI

HDMI is a fully digital audio/video interface that transmits uncompressed encrypted streams. HDMI is used to connect an audio/video source (DVD player, Blu-ray player, computer or game console) to a high-definition TV.
HDMI supports all video formats, including standard, improved, high-definition definition and multichannel sound. HDMI encapsulanses video data by TMDS. Initially, the maximum HDMI transmission tau w

output (DVD player, game console with disc player, digital receiver), because the connection by SCART (péritel) leads to losses :

Beyond three meters, an extender cord cannot effectively convey the weak and multiple analog signals it operates without disturbances occurring.
Without specific treatment (video amplifier, audio filter) therefore non-compliance with the original standard, longer links are not recommended.