Status & Aspect Ratio up[c]
0–2 V → off
+5–8 V → on/16:9
+9.5–12 V → on/4:3
RGB Green ground (pin 11 ground)
Clock / Data 2[d]
Control bus (AV.link)
RGB Green up
Component Y up[b]
Reserved / Data 1[d]
RGB Red ground (pin 15 ground)
Usually Data signal ground (pins 8, 10 & 12 ground)
RGB Red up
Video C up
Component PR up[b]
Blanking signal up
RGB-selection voltage up
0–0.4 V → composite
1–3 V → RGB
Composite video ground (pin 19 & 20 ground)
Blanking signal ground (pin 16 ground)
Composite video output
Video Y output
Composite video input
Video Y input
output/input denotes symmetrical links
up/down denotes links to/from the TV set
^ a rarely supported.
^ b non-standard extension.
^ c from STB to VCR when used for unattended recording; 12V forces
tv-set to AV-channel
^ d protocol not standardised, e.g. D²B.
^ e This pin is part of the shell/surround of the male connector. It
is often connected to the overall screen in a cheap cable. In
equipment, Pin 21 should be connected separately to the chassis, but
often it is merely connected to all the other ground pins.
SCART (from Syndicat des Constructeurs d'Appareils Radiorécepteurs et
Téléviseurs, "Radio and Television Receiver Manufacturers'
Association") is a French-originated standard and associated 21-pin
connector for connecting audio-visual (AV) equipment.
It is also known as Péritel (or Peritelevision) (especially in
France), 21-pin Euro
SCART (Sharp's marketing term in Asia),
Euroconector (in Spain), EuroAV or EXT. In the United States,
another name is EIA Multiport (an EIA interface).
SCART used to be the most common method of connecting AV
equipment, and was a standard connector for such devices; it was far
less common elsewhere. As it was designed to carry analog
SCART has become obsolete[dead link]
with the introduction of new digital standards such as
DisplayPort, which can carry high-definition content and multichannel
audio, though it remains commonly used.
HDMI-CEC is derived from
SCART's AV.link. However,
SCART Connection can also
support HD signals like 480p, 720p, 1080i, 1080p, if the SCART
connection of a device is designed to support
YPbPr connection, but
this configuration is rare. The same for multichannel audio, but even
this configuration remains rare, as it is not standardized.
The official standard for
CENELEC document number EN 50049-1.
SCART is sometimes referred to as the IEC 933-1 standard.
Note that there is also a Japanese version of the
which is referred to as the Japanese RGB-21 connector, EIAJ
TTC-003, or simply JP-21. This version of
SCART uses similar
signals and the same connector, but it has a different pinout. When
using RGB video, the red channel uses the same pins in both standards,
so red video with no audio is indicative of mismatching JP-21 SCART
2.1 Daisy chaining
2.2 Direct connections
2.3 RGB overlays (fast switching)
2.4 Status and aspect ratio (slow switching)
2.5 Data bus
2.6 Multi channel surround
2.7 High definition
2.8 Cordset types
2.9 Japanese counterpart: JP21 pinout
3 Practical considerations
4 Blanking and switching
6 See also
8 External links
SCART connector first appeared on TVs in 1977. It became
compulsory on new TVs sold in France from January 1980, and
since 1989/1990 in eastern Europe, such as Poland. The actual French
legal ruling was published 7 February 1980 and then rescinded 3 July
SCART is actually the name of the French organisation that
created the connector in 1970. The related European standard EN 50049
has been then refined and published in 1978 by CENELEC, calling it
peritelevision but it's commonly called by the abbreviation péritel
in French. The standard got several amendments and at least 2 major
revisions, approved by
CENELEC 13 November 1988 (EN 50049-1:1989) and
1st July 1997 (EN 50049-1:1997).
The Japanese equivalent was standardised in January 1983 with the norm
TTC-0003 published by EIAJ, which got superseded in March 1993 by
the norm CPR-1201 to include S-Video. CPR-1201 was withdrawn in
March 2003 to be replaced by the equivalent norm CPR-1205,
representing Japan move from analogue to digital and thus letting
analogue connectors as things from the past. In Japan and Korea, it's
commonly called RGB-21 while it's more generally called JP-21 in the
English speaking world. It was adopted in Japan for the connector's
ability to support RGB output format (no compression nor deterioration
of original video signals) but, contrary to
SCART in Europe, it never
saw widespread use on the consumer market.
SCART was introduced, TVs did not offer a standardised way of
inputting signals other than RF antenna connectors, and these differed
between countries. Assuming other connectors even existed, devices
made by various companies could have different and incompatible
standards. For example, a domestic VCR could output a composite video
signal through a German-originated DIN-style connector, an
American-originated RCA connector, an SO239 connector or a BNC
SCART system was intended to simplify connecting AV equipment
(including TVs, VCRs, DVD players and games consoles). To achieve this
it gathered all of the analogue signal connections into a single cable
with a unique connector that made incorrect connections nearly
The signals carried by
SCART include both composite and RGB (with
composite synchronisation) video, stereo audio input/output and
digital signalling. The standard was extended at the end of the 1980s
to support the new S-
Video signals. A TV can be awakened from standby
mode, and it can automatically switch to appropriate AV channel, when
the device attached to it through a
SCART connector is turned on.
SCART connection was also used for high definition signals like 720i,
720p, 1080i, 1080p with
YPbPr connection by some manufacturers, but to
the present day this connection is very scarce due to the advent of
SCART sockets on a set-top box
SCART is bi-directional regarding standard composite video and
analogue audio. A TV will typically send the antenna audio and video
signals to the
SCART sockets all the time and watch for returned
signals, to display and reproduce them. This allows "transparent"
set-top boxes, without any tuner, which just "hook" and pre-process
the TV signals. This feature is used for analogue pay TV like Canal
Plus and was used for decoding teletext.
A VCR will often have two
SCART sockets, to connect it to the TV
("up", "primary" or "1"), and for video input from a set-top box or
other device ("down", "secondary" or "2"). When idle or powered off,
VCRs will usually forward the signals from the TV to the set-top
decoder and send the processed result back to the TV. When a scrambled
show is recorded, the VCR will drive the set-top box from its own
tuner and send the unscrambled signals to the TV for viewing or simple
recording control. Alternatively, the VCR could use the signals from
the TV, in which case it would be inadvisable to change channels on
the TV during the recording.
The "down" socket can also be used to connect other devices, such as
DVD players or game consoles. As long as all devices have at least one
"up" and "down" socket, this allows for connecting a virtually
unlimited number of devices to a single
SCART socket on the TV. While
audio and video signals can travel both "up" to the TV and "down" to
devices farther away from the TV, this is not true for RGB (and
non-standard YPBPR) signals, which can only travel towards the TV.
"Up" and "down" are conventional. Logically the TV is the last device
of the "up" chain-path (stream) and the first device in the "down"
chain path. Physically the TV is under the device which sits on its
top, hence the name set-top box for the device. Moreover, some
sockets' relative position may enforce the belief that the TV is
physically the last in the down direction.
Logically, the TV is on top and ends the "up" chain-path, translating
the electrical info into an image and sound. From the same logical
point of view the info stream, wherever it originates, may need
processing such as decrypting (decoding, descrambling) or adding
captioning/subtitles. In this case the info stream is sent logically
"down" to dedicated function devices. From the last processing device
the info stream is sent logically "up" to the TV, through all the
chain-path. Another case is when the info stream is sent "down" and
not expected to be sent back "up", for example when sent to a
Closing a loop on either the "up" or "down" chain-path may not have
useful effects and may create instability.
As Audio and (Composite)
Video use the same pins on "up" and "down"
connectors (and require a crosslinked cable), it is also possible to
connect two devices directly to each other without paying attention to
the type of the socket.
However, this no longer works when S-
Video signals are used. As
straight links (RGB Red and Blue up) were re-purposed to carry
chrominance information, the S-
Video pinouts are different for "up"
SCART connectors. Further, they are often not fully
Paying attention to the type of socket is essential when handling
component RGB/YPBPR/S-video. Damage can be caused to devices
incorrectly connected as follows:
SCART 1 ("up") from one device to
SCART 1 ("up") of another
device when both SCARTs are configured for RGB/YPBPR/S-video-up. Pins
7, 11 and 15 are outputs.
SCART 2 ("down") from one device to
SCART 2 ("down") of
another device when both SCARTs are configured for S-video-down. Pin 7
is an output.
SCART 1 ("up") from a device configured RGB/YPBPR, to SCART
2 ("down") of another device configured with S-video-down. Pin 7 is an
Damaging pins 7, 11 or 15 may result in yellow, purple or blue/green
images, due to the missing blue, green or red components respectively.
When using S-video, damaging pin 7 or 15 may result in black-white
images due to the missing chroma component ("down" and "up"
respectively). Similarly, damaging pins 7 and 15 (PB and PR) while
leaving pin 11 (Y) undamaged may result in black-white images when
using YPBPR. Damaging more than one of these pins may result in
RGB overlays (fast switching)
SCART enables a device to command the TV to very quickly switch
between signals, in order to create overlays in the image. In order to
implement captioning or subtitles, a
SCART set-top box does not have
to process and send back a complete new video signal, which would
require full decoding and re-encoding of the color information, a
signal-degrading and costly process, especially given the presence of
different standards in Europe. The box can instead ask the TV to stop
displaying the normal signal and display a signal it generates
internally for selected image areas, with pixel-level granularity.
This can also be driven by the use of a "transparent" color in a
Status and aspect ratio (slow switching)
SCART allows a connected device to bring it in and out of standby mode
or to switch it to the AV channel. A VCR or other playback device will
optimally power on when a cassette is inserted, power on the TV (or
switch it to video mode) and then start playing immediately if the
cassette's write protection tab is absent. When turned off, the VCR
will ask the TV to power off, which it will do if it had been powered
on by the VCR's request and if it remained in video mode. Only some
TVs will do this—most only implement automatic switching to and from
The same signal can be used by a satellite receiver or set-top box to
signal a VCR that it is supposed to start and stop recording ("pin 8
recording"). This configuration usually requires that the VCR be
farther from the TV than the source, so the signal usually travels
SCART also supports automatic widescreen switching. This is an
extension of the functionality of a pin which previously only
indicated to the TV that an external signal should be displayed.
Ideally, a widescreen source should offer three operating modes in
order to deal with widescreen signals:
Widescreen, for TVs that are widescreen or capable of otherwise
dealing with widescreen images
Letterbox, which adds blank space (usually black) at the top and
bottom of the image to give a 4:3 aspect ratio
Pan and scan, which crops the image to achieve a 4:3 aspect ratio;
only the centre portion is displayed with the sides truncated (as if
In the first case, the widescreen pin allows to indicate the current
signal format, which allows widescreen TVs to adjust the image width,
and widescreen-capable standard TVs to compress the scan lines of the
576i image vertically to a letterbox shape portion of the picture
tube. In the second case, the widescreen
SCART signal is never active
and the signal source performs the adaptations itself so that the
image has always a standard format as a result. Some sources assume
that the TV is always capable of widescreen functionality and hence
never perform the adaptations. Some sources will not even issue the
widescreen signal or maintain it at the same level all the time. Other
sources might offer the option of truncating the sides, but not of
letterboxing, which requires significantly more processing. Notably,
the circuitry of the early widescreen MAC standard decoders (e.g. the
Visiopass) could not letterbox. The limitations apply mostly to
satellite TVs, while DVD players can always at least letterbox and
The use of the data pins was not standardised in the original SCART
specification, resulting in the use of several different protocols,
both proprietary protocols and semi-proprietary protocols based on
standards such as D²B.
Some of the most creative usages appeared in analogue satellite
receivers. The function of decoding hybrid, time-compressed
analogue-digital MAC transmissions into RGB and analogue audio was
akin to making a digital receiver out of an analogue one. The D²B
pins (10 and 12) were used for communicating with satellite dish
positioners and for driving magnetic polarisers, before these became
incorporated into LNBs. The daisy-chaining features were used to
connect both a Pay TV decoder and a dish positioner/polariser to a
single Decoder socket on the receiver.
CENELEC EN 50157-1 introduced
AV.link as a standardised protocol to
carry advanced control information between devices. It is a
single-wire serial data bus and allows carrying remote control
information and to negotiate analogue signal types (e.g. RGB). AV.link
is also known as nexTViewLink or trade names such as SmartLink, Q-Link
or EasyLink. It appears as the
Consumer Electronics Control channel in
Multi channel surround
The data pins, 10, 12, 14, were used by some manufacturers for DOLBY
ProLogic, surround and multichannel on their TV sets (some high end
models with built in Dolby decoders, and external surround speakers,
both CRT, LCD and plasma sets, and only in Europe (and European
versions of Japanese TV Sets and DVD players), and mainly on S/PDIF),
in order to connect a DVD player to the TV set and stream the Dolby
and DTS to the surround of the TV set. However, this protocol was
rarely used, as it was limited only to a certain manufacturer, and the
connections were different from a manufacturer to another, and in some
cases, it was only commanded by the pin 8. In this case, it was
unusable with RCA to
SCART adapters. Also, if a Compatible TV with
such connection and a compatible DVD with such connection, but from
different manufacturers were interconnected, the surround might not
work, and only the stereo sound from the DVD player was available to
the TV, because some manufacturers did not use SPDIF, but an own
protocol. Also, this connection might be also lost, if the connection
of the DVD with the TV was made indirectly (through a VCR in daisy
chaining mode, for example), however, some VCR allowed the
pass-through of this signals. Some DVD player manufacturers on some
models offered SPDIF only on SCART, and an adapter in order to extract
the digital audio signal to send it to a home cinema. To the present
day this connection remains rare, as HDMI, S/PDIF, and
provide multichannel audio, also some TV sets with Surround built in
may have an Optical or
S/PDIF INPUT, beside Output.
SCART connection was also used, in limited cases, as a high definition
connection by using an
YPbPr connection over scart by some television
and audio video equipment (set top boxes, DVD players, Blu-ray
players, etc.) manufacturers. By using an
YPbPr connection, SCART
could be used for high definition signals, like 720i, 720p, 1080i,
1080p. Some manufacturers were using as Y the video composite
connection, while others were using the green connection as Y. With
the advent of HDMI, and because of the fact that the connection was
not standardized (as was S-video) and limited only to a certain
manufacturer, devices supporting high definition channels over SCART
YPbPr connection became scarce, if not extinct. In many cases, it
was implemented over a RGB
SCART and the
YPbPr mode of
SCART was manually switched.
YPbPr became used as an independent
SCART was left only for standard definition content.
EIA interface on a 1987 RCA Dimensia
SCART specification provided for different cable
(cordset) types denoted by a key color, but color-coding is rarely
used and cables often use different, non-standard configurations.
Fully wired cable.
Only composite wires.
1–4, 6, 17–20, 21
Video and Audio
1–4, 6, 21
10, 12, 21
Only data connections
1 depends on protocol used.
Japanese counterpart: JP21 pinout
Alternate Japanese JP21 Pinout
Audio left channel input
Audio left channel output
Audio right channel input
Audio right channel output
AV control input
Red signal ground
Red signal I/O
Green signal ground
Blue signal ground
Green signal I/O
Blue signal I/O
Audio Input: 0.40 mVrms, > 47K ohms
Audio Output: 0.40 mVrms, > 10K ohms
CVBS (Composite Video) in and out: 1 Vp-p, 75 ohms, sync: negative
Ym Input: Switches RGB to half-brightness, for video overlay (L: <
0.4V, H: > 1V, 75 ohms)
Ys Input: RGB in/out: (Ground for output, 1V+ for Input (preferred)1))
All RGB lines: 0.7 Vp-p, 75 ohms
This section does not cite any sources. Please help improve this
section by adding citations to reliable sources. Unsourced material
may be challenged and removed. (June 2009) (Learn how and when to
remove this template message)
SCART male connector. Only 10 pins (2, 6, 7, 8, 11, 15, 16,
17, 18, 20) are available. Some cheap cables or devices (DVD players,
TVs) have a 21-pin
SCART connector or socket that actually have 10
wires connected and are thus not RGB / S-
Video capable, but only CVBS.
Multi-AV (2-channel audio, S-
Video and CVBS)
SCART adaptors with
input/output signal switch
Nearly all modern DVD players and set-top boxes with
SCART sockets can
output RGB signal, which offers superior picture quality to composite
signal. However, many devices do not have RGB output turned on by
default, instead defaulting to composite video — RGB often has to be
set up manually in the menu or via switches on the back of the device.
SCART (gold plated)
The Nintendo GameCube†, Wii†, Neo-Geo, Dreamcast, PlayStation,
PlayStation 2, PlayStation 3, Xbox and
Xbox 360 can output RGB,
component video, S-Video, or composite video. These consoles come with
the standard composite video connector, but the manufacturers and
third parties sell connectors for component video hookup and for RGB
SCART hookup. Where the
Nintendo GameCube and Xbox automatically
switch to the proper mode, the
PlayStation 2 must be told via a
selection in the system menu whether it is to use YPBPR or RGB video.
^ † RGB is only available on
PAL region GameCube and
Video is only available on NTSC consoles.
Some versions of legacy consoles such as Sega's Master System, Genesis
and Nintendo's SNES are capable of outputting RGB signals, and many
older home computers (Amstrad CPC, later
ZX Spectrum models, MSX,
Commodore Amiga, Atari ST,
BBC Micro and Acorn Archimedes, etc.)
output RGB with composite sync suitable for
SCART use, but most used
varying non-standard DIN plugs. Standard-resolution arcade monitors
use RGB signals with a composite sync, which is SCART-compatible.
SCART cable length is estimated to be about 10 to 15 metres
without amplification.
Due to the relatively high signal voltages used in SCART, "hot
plugging" (connecting or disconnecting devices while they are on) is
not recommended. Although there is no risk of personal injury, there
is the possibility of damaging electronics within the devices if the
connector is inserted improperly. Also, since many
TVs are Class II (double-insulated) rather than earthed, the large
exposed shield on the
SCART connector will be held at approximately
half mains voltage if it is plugged into a powered TV with the other
end unplugged. If the cable is then plugged into an earthed device
with a metal case, inadvertent contact with the
SCART cable shield
while the earthed device is touched with the other hand can cause a
painful electric shock. For this reason the device end of the cable
should always be plugged in first and the TV end plugged in
Quality differences exist in
SCART cables. While a proper
uses miniature coaxial cables for the video signals, cheap SCART
cables often use plain wires for all signals, resulting in a loss of
image quality and greatly reducing the maximum cable length. A common
problem on a cheap
SCART cable is that a TV outputs a composite video
signal from its internal tuner and this is induced or cross-talked
onto an incoming video signal due to inadequate or non-existent
screening; the result is ghostly images or shimmering superimposed on
the incoming signal. To non-destructively verify if a
SCART cable uses
coaxial cables, unscrew the strain relief at the
SCART connector and
fold open the plastic shell.
Using higher-quality cables such as those with ribbon cords that have
properly shielded coaxial cables inside might help in reducing a
'ghosting' effect, but it does not always completely eliminate it due
to various factors. A more permanent method is to remove pin 19 (Video
Out) from the
SCART plug that is put into the TV, preventing a signal
from being broadcast by the TV into the cable, so it cannot cross-talk
with the incoming signal.
Multichannel audio, like DOLBY (like SPDIF connections), may be
SCART connection, through data pins 10, 12, 14. However,
not all devices are compatible with this standards, therefore it
remains rarely used, as there is no standard regarding connection, and
it may be different from a manufacturer to another.
Blanking and switching
Two pins provide switching signals.
Pin 8, the switch signal pin, carries a DC voltage from the source
that indicates the type of video present.
0 V–2 V means no signal, or internal bypass
4.5 V–7 V (nominal 6 V) means a widescreen (16:9) signal
9.5 V–12 V (nominal 12 V) means a normal (4:3) signal
Pin 16, the blanking signal pin, carries a signal from the source that
indicates that the signal is either RGB or composite.
0 V–0.4 V means composite.
1 V–3 V (nominal 1 V) means RGB only.
The original specification defined pin 16 as a high frequency (up to
3 MHz) signal that blanked the composite video. The RGB inputs
were always active and the signal 'punches holes' in the composite
video. This could be used to overlay subtitles from an external
0 V–0.4 V means composite with a transparent RGB overlay.
1 V–3 V (nominal 1 V) RGB only.
There is no switching signal to indicate S-Video. Some TVs can
auto-detect the presence of the S-
Video signal but more commonly the
Video input needs to be manually selected. The same for the rare
component YPbPr, which is in many cases implemented over a composite
or rgb scart.
The cables for connecting equipment together have a male plug at each
end. Some of the wires such as ground, data, switching and RGB connect
to the identical pin number at each end. Others such as audio and
video are swapped so that an output signal at one end of the cable
connects to an input signal at the other end. The complete list of
wires that are swapped is: pins 1 and 2, pins 3 and 6, pins 17 and 18,
pins 19 and 20.
SCART leads are available in a wide range of stores in Europe and in
specialised stores in North America.
List of display interfaces
SCART (Euroconector)". uvigo.es. Retrieved 17 November
2016. (in Spanish)
Basic information about SCART[dead link]
^ "La télé des années 80". croque-vacances.com. Archived from the
original on April 3, 2009. (in French)
^ "Le TI-99/4A et la Presse Informatique".
perso.orange.fr/fabrice.montupet. Archived from the original on
October 14, 2007. (in French)
SCART signal conversion guide. Archived October 8, 2011,
at the Wayback Machine.
^ Based on a
Pace Micro Technology
Pace Micro Technology Prima analogue receiver manual and
a DATCOM AP-500/AP-700 dish positioner manual.
^ "Game Console RGB
SCART Cable Diagrams". Members.optusnet.com.au.
^ "Electric shock off aerial coax - DIYnot.com - DIY and Home
Improvement". DIYnot.com. Retrieved 2012-06-15.
^ "Guide to preventing shocks from entertainment systems" (pdf).
Digital TV Group. Retrieved 15 June 2012.
^ ":: EPE Chat Zone :: Radio Bygones Message Board ::: SCART
Shock". Chatzones.co.uk. Retrieved 2012-06-15.
Wikimedia Commons has media related to SCART.
SCART connector pinout and cables schemes
SCART — hardwarebook.info
RGB/VGA and SCART
SCART versus JP21
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List of video connectors
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