What Do Different Tv Cable Colors Mean
 RCA plugs for blended video (yellow) and stereo sound (white and red) | |||
| Type | RF coaxial connector | ||
|---|---|---|---|
| Production history | |||
| Designer | Radio Corporation of America | ||
| Designed | 1930s | ||
| General specifications | |||
| Diameter | 0.354 in (0.xc cm) (outer, typical) | ||
| Cable | Coaxial | ||
| Passband | Typically 0–100 MHz | ||
The RCA connector [one] (or RCA Phono connector[2] or Phono connector[3] [four]) is a type of electrical connector unremarkably used to acquit audio and video signals. The name RCA derives from the company Radio Corporation of America, which introduced the design in the 1930s.[5] The connectors male plug and female jack are chosen RCA plug and RCA jack.
The discussion phono in phono connector is an abridgement of the word phonograph, because this connector was originally created to permit the connexion of a phonograph turntable to a radio receiver. RCA jacks are ofttimes used in phono inputs, a set of input jacks ordinarily located on the rear panel of a preamp, mixer or amplifier, especially on early on radio sets, to which a phonograph or turntable is attached.
History [edit]
Rear console of a 1939 RCA model 45EM vacuum tube desktop AM radio with a female RCA jack.[6] Tag reads "An inexpensive RCA Victor tape player will make a fine Victrola of this radio. Plug hither."
By no later than 1937, RCA introduced this design as an internal connector in their radio-phonograph flooring consoles. The amplifier chassis had female connectors which accepted male person cables from the radio chassis and phonograph thespian.[7] Originally, the concept was intended equally an piece of cake method to unhook sources while troubleshooting the console during servicing.[ citation needed ]
By no later than 1938,[5] RCA migrated the female connector to the rear panel of many of their desktop AM radio models to allow customers an easy method to attach an external phonograph or tv set at a later date.[four] The connector was labelled on the back of radio with one of the following terms: "Victrola", "Phono", "Pick-up", "Television receiver".[viii] [9] RCA afterwards marketed a special turntable for 45 RPM records, the model 9JY.[x]
In 1939, RCA introduced two radio-idiot box floor consoles (TRK-9, TRK-12) which used the aforementioned internal connectedness concept but the audio output of the television chassis was connected to the radio/amplifier chassis via a male to male cable.[xi] Three lower cost 1939 televisions models had an audio output connector on their rear console instead of an integrated amplifier and speaker: RCA TT-five, Westinghouse WRT-700, GE HM-171.[8] [12]
In the 1950s, RCA connectors began to supplant the older quarter-inch ( i⁄four inch) phone connectors for many other applications in the consumer sound world when component high-fidelity systems started becoming popular during the transistor revolution.[ citation needed ] Refinement of the RCA connectors came with afterward designs, although they remained compatible.[ commendation needed ]
Other uses [edit]
Composite video cable with RCA male plugs for the Xbox 360.
In the most normal use, cables have a standard plug on each stop, consisting of a central male connector, surrounded past a ring. The band is often segmented to provide spring gripping pressure level when mated. Devices mount the socket (female jack), consisting of a cardinal hole with a band of metallic around it. The ring on the jack is slightly smaller in diameter and longer than the ring on the plug, allowing the plug's band to fit tightly over it. The jack has a pocket-size area between the outer and inner rings which is filled with an insulator, typically plastic (very early on versions, or those made for apply every bit RF connectors, used ceramic).
The RCA connector was initially used for audio signals. As with many other connectors, it has been adopted for uses other than originally intended, including equally a DC power connector, an RF connector, and as a connector for loudspeaker cables. Its use as a connector for composite video signals is extremely mutual, only provides poor impedance matching.[13] RCA connectors and cable are too unremarkably used to behave S/PDIF-formatted digital audio, with plugs colored orange to differentiate them from other typical connections.
Connections are fabricated by pushing the cable's plug into the female jack on the device. The bespeak-carrying pin protrudes from the plug, and often comes into contact with the socket before the grounded rings meet, resulting in loud hum or fizz if the audio components practise not share a common ground and are powered while making connections. Continuous dissonance can occur if the plug partially falls out of the jack, breaking the footing connection but not the signal. Some variants of the plug, especially cheaper versions, also requite very poor grip and contact between the footing sheaths due to their lack of leap activity.
They are frequently color-coded, yellow for blended video, red for the right audio channel, and white or black for the left aqueduct of stereo audio. This trio (or pair) of jacks can often be institute on the back of audio and video equipment. One or more sets are oft found on TV sets to facilitate connection of camcorders, other portable video sources and video game consoles.[14] Although nearly all connectors, including analog and S/PDIF audio every bit well as blended and component video, tin use identical 75 Ω cables, sales of special-purpose cables for each use have proliferated. Varying cablevision quality ways that a cheap line-level sound cablevision might not successfully transfer component video. For digital audio, as long as a connection is successfully made using the cables the sound will remain faithful to the original betoken because a digital indicate tin but be fully received or non received at all. Cables should run into the S/PDIF specification as defined past the international standard IEC 60958-three for assured performance.
The male plug has a center pin which is 3.175 mm (i/8 inch) in diameter, and is surrounded by an outer trounce which is 8.25 mm (i/three inch) in bore.
Disadvantages [edit]
"Bullet plug" variation – Note the hollow center conductor and the pivot point for the return bespeak.
When connecting the male into the female person, the inner hot (signal) connection is made before the ground connexion has been guaranteed; this ofttimes produces a loud buzz if the equipment is active when the connexion is fabricated.
The hot betoken wire and signal ground provided by an RCA connection implement an unbalanced connection. A truthful balanced connection is more often than not preferred in sure applications, peculiarly professional settings because it allows for the employ of long cables while reducing susceptibility to external racket.
Using RCA connectors, each indicate requires its own plug. Even the uncomplicated instance of attaching a cassette deck may need four of them – two for stereo input and two for stereo output. In any common setup this quickly leads to a disarray of cables and confusion in how to connect them. This state of affairs is fabricated worse if 1 considers more circuitous signals similar component video (a total of three for video and two for analog audio or one for digital coaxial audio).
There have been attempts to introduce combined audio/video connectors for direct signals, simply in the analog realm none of these has always become common, with the exception of Europe where the SCART connector was very successful.[15] For a fourth dimension the v-pin DIN connector was popular for bi-directional stereo connection betwixt A/5 equipment, but information technology has been entirely displaced on modernistic consumer devices. Though RF modulators inherently transmit combined A/5 signals in video applications, they depend on broadcast boob tube systems and RF connectors which are not universal worldwide; RF signals are likewise generally inferior to direct signals due to protocol conversion and the RF limitations of the three major analog Television set systems (NTSC, PAL and SECAM).
Before Hard disk drive television became a standard, nigh all TV sets, VCRs, and DVD players sold in Europe had SCART connectors,[fifteen] although these are sometimes supplemented by RCA and/or RF connectors. SCART-RCA adapters also exist, which usually let input of composite video and stereo sound.[16] Outside Europe, dissever RCA connectors are usually used,[ citation needed ] supplemented by RF connectors for astern compatibility and simplicity. Although mini-DIN connectors are used for S-Video connections, composite video, component video, and analog audio (mono or stereo) all apply RCA connectors unless the signals are sent via SCART. In the digital realm, however, combined A/V connectors are gaining basis; HDMI is commonly used today for consumer electronics, and DisplayPort, a potential competitor to HDMI, is often found on home computers and peripherals.
Colour coding in consumer equipment [edit]
Plugs and sockets on consumer equipment are conventionally colour-coded to help correct connections. The standard[17] colors for the various signals are shown beneath; however, across 7.1 audio, the standard has degraded to a more than general white/yellow, scarlet/blue, and green/xanthous color scheme for each cable respectively.
Stereo audio applications utilize either blackness and cherry, grey and red, or white and red RCA connectors; in all three cases, cherry-red denotes right. White or imperial may also be replaced by black. Some older tape recorders, and equipment similar receivers designed to connect to them, use a 5-pin DIN connector to connect left and right for tape and playback with a unmarried cable. Adapters between this connector and RCA connectors have used white and red for left and right aqueduct recording, and blue (or sometimes black) and yellow for playback, but this is not universal. Most modern equipment with RCA connectors for recording devices simply uses white and scarlet for all stereo pairs, whether record or playback.
While these are the standard colors found on commercially made products, cables with different-colored connectors may be used, as long every bit the cablevision itself is uniform with the application (for case, cables with 75 ohms impedance for video and SPDIF).
| Composite analog video | Composite | Yellow | |
| Analog sound | Left/Mono (record if 4 connector tape cable) | White | |
| Correct (tape if 4 connector record cablevision) | Red | ||
| Left record (play if iv connector tape cable) | Blackness | ||
| Right tape (play if 4 connector record cable) | Yellow | ||
| Center | Green | ||
| Left environment | Blue | ||
| Right surround | Grey | ||
| Left back surround | Brown | ||
| Correct back surroundings | Tan | ||
| Subwoofer | Purple | ||
| Digital audio | S/PDIF | Orange | |
| Component analog video (YPBPR) | Y | Green | |
| PB/CB | Blueish | ||
| PR/CR | Cherry | ||
| Component analog video/VGA (RGB/HV) | R | Red | |
| M | Green | ||
| B | Blue | ||
| H (Horizontal sync)/S(Composite Sync) | Xanthous | ||
| V (Vertical sync) | White |
References [edit]
- ^ RCA connectors; CUI Devices.
- ^ Radio Electronics; July 1953; Folio 93-94.
- ^ Lafayette catalog 951A; 1951; Page 63.
- ^ a b Stromberg-Carlson; Model 440M Console Radio; 1939; come across rear console in upper-right photo.
- ^ a b RCA Earth Trotter; June 1938; Page 15.
- ^ "1939 RCA Model 45EM AM Radio". Radio Museum . Retrieved Jan 5, 2021.
- ^ "1937 RCA Service Notes" book; Model U-109 Radio-Phonograph; see connections at bottom of folio 256.
- ^ a b Early on Electronic Television; earlytelevision.org
- ^ RCA TT-5 Television; RCA Dealer Sheet; 1939.
- ^ "RCA 45 RPM ix-JY Record Histrion and RCA Tube Radio 6-XD-v". BlueBoy Records. Archived from the original on 2011-09-10. Retrieved 2011-08-23 .
- ^ "RCA Service Data: 1938-1942 Volume II C" book; Models TRK-9, TRK-12, TRK-ninety, TRK-120 Televisions; see connections at tiptop of page 261-C and center of page 275-C.
- ^ RCA TT-5 Goggle box Attachment; earlytelevision.org
- ^ Pell, Rich (April 21, 2010). "The RCA phono plug: An outdated relic?". EETimes. Retrieved March 8, 2017.
- ^ Alan Henry (25 December 2013). "How To Connect Your Old Video Game Consoles To A New TV". Kotaku. Retrieved 27 Nov 2016.
- ^ a b HDMI : when SCART scarpers!, January i, 2006, retrieved 2011-08-27
- ^ "3 RCA plugs to Scart plug". Retrieved 2011-08-23 .
- ^ Consumer Electronics Clan standard CEA-863-B - Connection Colour Codes for Dwelling house Theater Systems, CEA, Feb 2011, archived from the original on 2011-07-12, retrieved 2011-08-27
External links [edit]
Source: https://en.wikipedia.org/wiki/RCA_connector
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