RSA output. Let's figure out the tulips for connecting to the radio. What to do if the radio does not have enough linear outputs

RCA connectors for video and stereo audio. The standard colors of the connector housings are: yellow - for a video signal, white - for a mono signal or the left channel of a stereo two-channel audio signal, red - for the right channel of a stereo two-channel audio signal.

RCA jack or composite(also called phono connector, or CINCH/AV connector, also colloquially “bell”, “tulip”, AV connector) is a connector standard widely used in audio and video equipment.

The name RCA comes from the Radio Corporation of America, which introduced this type of connector in the early 1940s for connecting phonographs to amplifiers.

The big disadvantage of such connectors is that when connecting, the signal contact pair (with voltage) is connected first, and only then the housing contacts. This can cause damage to devices at the time of connection if there is a potential difference between the cases, which often happened when connecting TVs to the TV output on video cards.

A standard RCA plug (in slang - “male”) looks like a central metal protruding contact pin with a diameter of 3.2 mm (3.18 for a 0.25 inch size), an outer open length of 9.0 mm (9.52/7. 92 mm for 0.375/0.312 inch sizes), an internal closed length of 6.0 mm (5.56 for 0.219 inch size), surrounded by a metal round rim (8.0 mm minimum inner diameter; 8.33 for 0.328 inch size). The outer diameter of the rim depends only on its thickness and is not standardized.

The RCA jack (slang for "female") - usually a panel connector that the bezel fits onto, has an outer diameter of 8.0 mm (8.33 for the 0.328 inch size) and a depth of 7.50 mm (7.14 for the 0.281 inch size ), so the rim crimping jaws must have a slightly larger internal diameter.

In inexpensive versions, the space between the connector/collet and the rim/housing (internal insulator) is filled with simple plastic or polyethylene, in mid-price ones - with textolite washers or similar ones made of pressed fiberglass, in expensive ones - with heat-resistant Teflon or ceramics.

One of the main disadvantages of inexpensive connectors is their low heat resistance. Soldering cables with a cross-section of 0.823 mm² (18 awg) or larger requires a very long warm-up time at standard solder melting temperatures of 250 ° C - or much higher soldering iron tip temperatures to increase the cumulative heat capacity of the tip, sometimes up to 500 ° C.

Ordinary plastic or polyethylene quickly melts at such temperatures and fuses the inner conductor with the outer housing of the connector. It is recommended to carefully monitor the connector for overheating or purchase one with a refractory internal insulator. This is especially important when sealing extremely heat-intensive copper solid cores with a diameter of more than 0.80 mm (0.502 mm²). Available larger gauge single-core TV cables have a diameter of about 1.00 mm (0.785 mm²) or 1.13 mm (1.002 mm²). One of the old methods of preserving the insulator of an inexpensive male connector is to solder it onto a new panel connector (in slang, “female”).

Standard colors

Different signals use a different connector color defined by the standard, but multichannel audio (7.1 onwards) still does not have standard colors.

If you use audio output to the TV speakers, it is converted to the left channel (white connector).

see also

• Analog signal connectors:

• Analog-to-digital signal connectors:

• Digital signal connectors:

If you do not come across radio tape recorders, amplifiers and other sound-reproducing equipment every day, then you may well have a question - what is this “linear output” on the radio tape recorder, why is it needed and what is the importance of their number.

The line level output is intended for connecting external audio amplifiers. These can be acoustic amplifiers, or an active subwoofer - a linear output is used to transmit sound from the source (car radio) to the amplifier.

The term “line output” refers to an unbalanced type of audio signal transmission that uses one signal conductor and ground; in automotive electronics, RCA connectors (the so-called “bells”) are used. It also assumes that the signal level corresponds to the standard. In car radios this level is usually up to 2V; some devices (high class) have a signal level up to 4.5-5V. The level of the signal at the linear output in automotive electronics is of serious importance, because the car is a source of a huge amount of interference and the higher the level of the useful signal transmitted through the intercomponent cables, the less noise induced from the electronic systems of the car will be heard.

The higher the signal level at the linear output, the better; it’s not for nothing that all high-end car radios have a high-level linear output, and this is especially emphasized in the technical specifications.

How many linear outputs should a car radio have?

Indeed, if you choose a car radio, then in the technical specifications you can read about the number of linear outputs, which can be different, for example one pair, two pairs, three pairs. The more expensive the radio, the more linear outputs it usually has “on board”. How many should there be?

1. A pair. Usually found in all even the most inexpensive radios. Most often used to connect a subwoofer. It’s good when a radio with one pair of linear outputs can control the level of this output (to adjust the subwoofer); if there is a built-in filter for the subwoofer (LPF), then this is generally excellent.
2. Two pairs. Usually these are front and rear outputs for building a system with “front+sub” or “front+rear” amplification. Usually these are mid-price radio tape recorders; they already have the necessary settings for the subwoofer (see above); in general, it’s great when you can turn on the low-pass filter (HPF) on the front outputs.
3. Three pairs are the best option for creating a full-fledged system with an amplifier on all channels (front + rear + sub) or even complex options with channel amplification if the radio has a built-in crossover or even a processor.

The more pairs of linear outputs a car radio has, the more sophisticated an audio system can be created. When purchasing, decide how much you need.

So when buying a car radio, decide which amplifiers you will connect to it in the future. If amplifiers are not planned, then having at least one line output for connecting a subwoofer is still a good idea. What if you still want to install a sub?

What to do if the radio does not have a line output?

If your car radio does not have a line output, then most likely it is either very cheap or it is a factory radio. If there is no way out but you really need it, then there are two options - one is correct and the other is simple.

The correct option is to “unsolder” the linear outputs, i.e. disassemble the radio and output the signal from it after the pre-amplifier and before the power amplifier chip. Not everyone can do this; here you need to have an understanding of the circuit design of the radio and at least be able to hold a soldering iron in your hands. You can also contact a specialist.

A simple option is to use a high-level to linear converter. This solution is quite suitable if you need to connect, for example, an active subwoofer to a standard radio, without any special complaints about the quality, because this is not an uncompromising solution in terms of sound quality.

What to do if the radio does not have enough linear outputs?

It happens that your car radio only has one pair of line outputs and you need more. For example, you already have an amplifier connected to the front speakers, but you also want to install a subwoofer with an amplifier, but there is no desire to change the radio. There are two options here:

1. Removing an additional pair of linear outputs from the radio (see above) requires an understanding of what you are doing, or better yet, contact a specialist.
2. Take the so-called Y-splitter. This is a simple splitter wire, there are two types and they look something like this:

Y-splitter (1 female - 2 male)

Y-splitter (1″male - 2″female)

The first option (1 mother and two fathers) is more often used when you install a four-channel amplifier. You take one interconnect wire (“line wire”, “interconnect wire”, “line”, “bells”) and connect it to the radio and pull it into the trunk. In the trunk you take this Y-splitter and thus you have two pairs of line outputs instead of one.

The second option (1 male and two females) is used more often when you need to connect two separate components, for example an amplifier and an active subwoofer. Then you connect the Y-splitter to the radio and take two intercomponent wires and stretch them where you need them. The fact that you will have two wires will allow you to place the components in the trunk as convenient for you - one in one corner and the other in the opposite, for example. The downside to this option is that you will have to buy two RCA cables instead of one.

We must not forget that when using Y-splitters, you will receive the signal from one output, so there will be no front-rear or front-subwoofer settings from the radio!

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Through the “tulip” we denote the main points and preliminary configuration of plasma panels and LCD devices. The synchronization procedure may differ in some cases, but mainly depends on the type of computer video card, the installed operating system and the TV model.

In addition, there are quite a few other important points that will affect the quality of synchronization and its speed.

Why does TV need a computer?

Before we tell you how to connect a computer to a TV via a “tulip”, let’s answer this question. First, let's look at a regular monitor screen and take a look at the TV display. The latter, as a rule, significantly benefits from a larger diagonal and is not located somewhere in the corner on the desktop, but opposite a comfortable sofa or chair, where it can easily fit, if not a large company, then a friend or girlfriend - for sure.

Watching videos, photos and gaming - all this looks much more pleasant on a TV screen than on a modest monitor: there is no need to look at the details, use speakers, and personal PCs have not yet acquired remote controls.

The most common reason that motivates an owner to connect a TV to a computer via an RCA cable (“tulips”) is watching videos. But in fact, you can display the same picture on the LCD screen as on the monitor. And it doesn't have to be a movie. Therefore, you should not forget about photos, the Internet and games.

All kinds of car and flight simulators, arcades, shooters and even strategies feel great on the big screen, and gaming becomes truly enjoyable. Also, no one forbids you to surf the web from the comfort of your sofa.

Synchronization

Before you connect your computer to the TV via the “tulip”, look at which connectors are on the video card and which are on the TV. The video accelerator is responsible for outputting the video signal from the PC, the connectors of which can be easily detected by the connected cable from the monitor. The TV's communication interfaces can be found on the back, side, or even front of the device, but in any case, it doesn't hurt to look at the instructions.

There are not so many types and varieties of interfaces along with connectors. Let's try to identify the main types that are most often used on video cards.

Video card connectors

D-Sub, or a VGA connector to which a standard monitor is connected. It is available on almost all video cards (especially from MSI), with the exception of the latest generation models, which use more modern switching outputs. The VGA interface is also called an analog output, from which the signal of the same name is transmitted.

DVI-I, and in some cases prefixed with D, is an advanced output that works with both analog and digital monitors. In models of previous years, this interface, as a rule, is adjacent to the analog VGA output, and some manufacturers equip their video cards with a special DVI-D-Sub adapter if the line was not equipped with this connector.

S-Video- an equally popular interface along with the previous connectors. It is widely used in many areas, which, by the way, are sometimes in no way related to computer video equipment. via RCA (“tulip”) using such a connector allows you to get a fairly high-quality video signal.

Modern ports

HDMI- this is the newest interface that is used to transmit high-definition images, providing maximum quality video and audio signals. A truly clear and rich image can only be obtained thanks to this output; in other cases, working with a large diagonal is saturated with visible pixels, which are not entirely pleasing to the eye.

TV connectors

RCA- interface, or composite “tulip” connector, is an outdated output, but due to its widespread popularity, it is very often found in everyday life. Before that (the best methods are D-Sub and S-Video), you need to find a special cable. The wiring spread is quite simple and varies in color: one is for the image, and the other two are for the sound (left and right channel).

S-Video. If you use this interface in synchronization with a similar output on a video card, then, naturally, no adapters are needed, and the signal will flow without interference or obstacles. If the commutations do not match, you can find a VGA-S-Video adapter.

SCART is a relatively old interface that can simultaneously transmit both audio and video signals. Its main purpose is to connect a video player or other similar player. To synchronize with a computer you will need an adapter such as SCART-D-Sub or SCART-S-Video.

Modern interfaces

HDMI- this, as mentioned above, is the highest quality option for displaying images on the screen, and if your video card and TV are equipped with this connector, you can safely use synchronization without any restrictions. For synergy, an inexpensive HDMI-to-HDMI adapter is sufficient.

Before you connect your computer to the TV via a “tulip”, make sure that the above connectors match, otherwise get a special adapter, fortunately, there are plenty of all kinds of adapters on the computer market, including the most exotic ones. The only bad thing about the adapter is that it can worsen the picture on the TV screen by changing the signature.

Switching cables may come with both the video card and the TV itself, so carefully study the contents of both devices before connecting your computer to the TV.

A review of cables and interfaces showed that the most acceptable adapters and, accordingly, types of connections are as follows:

• D-Sub(VGA) - DVI-I.
• D-Sub(VGA) - SCART.
• S-Video - SCART.
• DVI-I - SCART.

In other variable cases, the signal is greatly distorted and the picture suffers, so experts do not recommend using other switching methods.

There is no need to skimp on connecting cables. Cheap material and an unknown manufacturer guarantee low noise immunity, which will significantly reduce image quality.

If you are tormented by doubts about choosing one or another method of communication, then you can look through the official forums regarding your video card or TV model; there will probably be questions/answers from technical support on synergy with popular lines of devices.

Audio signal

Most motherboards use standard connectors for audio output such as TRS 3.5 mm or, in other words, “mini-jack”. Before connecting your computer to your TV via RCA, make sure that the audio output on your devices is equipped with just such interfaces, otherwise you will have to additionally buy a special adapter.

The same applies to connections via SCART and S-Video interfaces. If your TV is equipped with a separate audio system, then there should be no problems with connections at all. Systems of this kind are always equipped with popular connectors that do not require an adapter or adapter.

And one more important piece of advice: all operations to connect/disconnect any equipment, both to the TV and to the computer, must be carried out with the power completely turned off. Only after all the wires and cables have found their place and are tightly seated in the connectors, can you turn on the equipment and proceed to software configuration.

Connect? There is a connection!

03/31/2009 17:25 Vladimir Zakamenny

In previous articles we talked about media and file formats, about the main multichannel audio formats, and also about 3D audio technologies. This time we will talk about different types of connections for audio and video signals.

Interfaces for video signal transmission

Composite interface

The oldest type of connection currently used. On cheap TVs this is the only video input. It is a single RCA connector (tulip), usually yellow.

In the VHS era, this was the only way to transmit video, but with the advent of DVD, new ways to connect video devices to a TV have emerged that provide higher image quality.

To the advantages composite video interface It can be attributed to the fact that almost all televisions are equipped with it. The main drawback is that it coarsens the image a little, removing small details.

S-Video (orY/C)

Interface S-Video (Separate Video) is used to transmit video signals. It is a round four-pin connector that uses separate wires for the chrominance (C) and luminance/sync (Y) signals (hence the name Separate Video).

A connection using this standard provides good image quality when using simple DVD systems, but on high-quality players and TVs it produces noticeable blurring of the picture. Difference in image quality between composite interface And S-Video can only be seen on TVs with a fairly large diagonal (25 inches and above).

Component interface (or YUV)

It consists of three RCA type connectors in green, red and blue colors, designated Y, P/r, P/b (or Y, C/r, C/b). Separate wires carry the brightness/scan signals (Y) and two color difference signals (U and V). It is in this format that color information is encoded when recording on DVD, as well as when broadcasting broadcasts.

This type of connection allows you to get the best image quality for a TV (specifically for a TV, since final signal processing occurs in its path). Fully appreciate all the benefits component interface only possible on large diagonal TVs (29-36 inches or larger).

It is a standard interface for computer monitors, video projectors, plasma panels and LCD televisions. It includes signals of three primary colors, synchronization signals and a special channel for transmitting service information. Interface VGA allows you to transmit video images with virtually no distortion, with very high quality. The connector is usually HD D-Sub 15 pin.

DVI interface

Interface DVI (Digital Visual Interface) is used to transmit video signals in digital form. Since the video signal is transmitted digitally, the image is transmitted without any distortion or interference. Designed to transmit video images to digital display devices such as LCD monitors and projectors.

Data format used in DVI, is based on PanelLink, a serial data format developed by Silicon Image. Uses technology for high-speed transmission of digital streams TMDS (Transition Minimized Differential Signaling, differential transmission of signals with minimization of level differences) - three channels transmitting video streams and additional data, with a throughput of up to 3.4 Gbit/s per channel.

Single link DVI consists of four twisted pairs (red, green, blue, and clock), providing the ability to transmit 24 bits per pixel. With it, the maximum possible resolution of 2.6 megapixels at 60 Hz can be achieved.

There are three types DVI: DVI-A- analogue transmission only, DVI-I- analogue and digital transmission, DVI-D- digital transmission only. For analog transmission, an RGB signal bandwidth of 400 MHz (−3 dB) is achieved, for digital transmission the minimum clock frequency is 21.76 MHz, the maximum clock frequency in single mode is 165 MHz, the maximum clock frequency in dual mode is limited only by the cable.

Interfaces for audio signal transmission

Line output

This is the main interface for transmitting audio signals between the individual components of the music complex. This interface is used to connect stereo speakers, so when using a multi-channel speaker system, this connector will not be used.

Microphone input

Microphone input designed to connect a microphone. The microphone can be used to amplify the sound of the human voice, for karaoke, and for calibrating surround sound. The number of such inputs determines how many microphones can be connected simultaneously.

Headphone output

Headphones are used for individual listening to music, to maintain silence in the room, for example, at night. Connecting headphones directly to your home theater can be convenient if your TV does not have a headphone output. You can also listen to music CDs using headphones without turning on the TV.

Subwoofer output

A subwoofer is a special loudspeaker for reproducing low-frequency bass sounds. When watching movies, the subwoofer helps reproduce the sounds of gunshots, explosions, etc. Many multi-channel amplifiers and AV receivers provide an output for connecting an active (with its own built-in amplifier) ​​subwoofer.

It consists of six line-level (RCA) connectors that are used to transmit multi-channel 5.1 audio in analog form. Most home theaters are equipped with this output.

6.1CH

These are seven line connectors that are used to transmit multi-channel 6.1 audio in analog form. Using this interface, you can connect a media player, amplifier or 6.1 sound card to the amplifier.

It consists of eight line inputs that are used to transmit multi-channel 7.1 audio in analog form. The 7.1CH connector is used to connect a power amplifier or active 7.1 speaker system to a home theater.

Coaxial interface

Coaxial input used to transmit a digital audio signal, and both multi-channel and stereo audio can be transmitted through this interface. To connect via digital coaxial input You can use a simple shielded audio cable with an RCA connector (“tulip”).

Optical output

Used to transmit digital audio signal over optical cable. Both multi-channel and stereo audio can be transmitted through this interface. Of the benefits optical interface It can be noted that it is completely protected from electrical interference.

Mixed interfaces (audio and video)

RCA jack(also called phono connector, or CINCH/AV connector, and also in common parlance " tulip") is a connector standard widely used in audio and video equipment.

Name RCA comes from the name Radio Corporation of America, which introduced this type of connector in the early 1940s for connecting phonographs to amplifiers.

In Russian, this type of connector is often called “tulip”.

Connectors RCA used to transmit video signals and stereo audio: yellow - for video, white - for mono audio or the left channel of a stereo audio signal, red - for the right channel of a stereo audio signal.

SCART (or Euro connector)

European standard for connecting multimedia devices such as TV, VCR, DVD player. The same age as the composite interface, proposed by the French association of radio and television equipment developers Syndicat des Constructeurs d’Appareils, Radiorecepteurs et Televiseurs (abbreviated SCART). Other names: Peritel, Euro connector, Euro-AV.

SCART unifies the connections of various devices, it combines all the necessary signals in one multi-pin plug. It is a flat double-row 21-pin connector, which outputs video signals of various formats, stereo audio signals, and control signals. The shape of the connector makes it impossible to connect the plug by mistake. A small limitation is that physical force must be applied to connect or disconnect the socket and plug.

Today, every television or video device produced for Europe is equipped with at least one SCART. Before the standard SCART a large number of different connectors were used, which often made it difficult to connect devices made by different companies. There were differences both in the physical design of the connectors and in the signal specifications.

DV (IEEE 1394)

Serial data interface. In some cases it can be used to transmit audio and video signals. It has become widespread thanks to miniDV video cameras. Using the DV interface, you can connect your camcorder to a DVD recorder and immediately transfer video from it to a DVD disc.

When recording from digital video cameras, it is advisable to use a digital interface rather than an analogue one for connection. DV (IEEE 1394). Choosing a digital interface will allow you to avoid the loss of quality that occurs when using analog video interfaces (composite, S-Video).

HDMI interface

HDMI (High-Definition Multimedia Interface- high-resolution multimedia interface) is a digital connector that consists of two types of small-sized connectors: 19- and 29-pin. In any of the options, it provides transmission of eight-channel audio in 192 kHz / 24 bit format and a video signal compatible with high-definition television standards. Requires a digital decoder in the TV.

HDMI has a throughput ranging from 4.9 to 10.2 Gbit/s, the recommended cable length is 1.5 m, but connection distances of up to 5 meters are possible. The standard supports CES and European AV.link control protocols.

This interface provides support for HDCP (High-bandwidth Digital Content Protection) technology against illegal copying. Is a modern replacement for analogue connection standards such as SCART or RCA. This is the most promising format for the coming years, and with quality that is excessive for a classic DVD. Interface HDMI backwards compatible with DVI.

DisplayPort

New signal interface standard for digital displays. Adopted by VESA (Video Electronics Standard Association) in May 2006. DisplayPort It is intended to be used as the most modern interface for connecting audio and video equipment, primarily for connecting a computer to a display, or a computer and home theater systems.

Supports HDCP version 1.3 and has twice the throughput of Dual-Link DVI, low power supply voltage and low sensitivity to interference, the Mini DisplayPort connector is approximately the same size as USB.

Technology implemented in DisplayPort, will allow you to simultaneously transmit both graphic and audio signals. Main difference from HDMI- a wider channel for data transmission (10.8 Gbit/s instead of 5 Gbit/s), which will provide high resolutions. Maximum cable length DisplayPort three times more than HDMI- 15 meters versus 5. Well, instead of HDCP, copy protection, DPCP (DisplayPort Content Protection) technology with 128-bit encryption will be implemented.

Universal connectors (for connecting external devices)

USB

USB- serial interface for data transfer. There are two types of this interface, differing in the shape of the connector: USB Type A And USB Type B. Interface USB (type A) used to connect a USB flash drive or external hard drive that supports this interface to your home theater. On a home theater with a USB interface, you can listen to music and watch video files recorded on a flash drive. Using the port USB (Type B) You can connect your home theater to your PC and listen to music or watch videos from your computer.

Ethernet

A common technology for transmitting data in computer networks; almost all modern computers are equipped with an interface Ethernet. Using it, you can connect your home theater to your home local network and view photos, video files saved on your computer’s hard drive, and listen to music in MP3 format. In home theaters as an interface Ethernet Typically 10/100BASE-T Ethernet with an RJ-45 connector is used.

RS-232- serial interface for data transfer. Through this interface, using special software installed on your computer, you can remotely change the home theater settings. On some models, via RS-232 you can change the firmware of the digital part of the devices or change the technological parameters.

FireWire (iLink)

FireWire (iLink) - serial data transfer interface. In some cases it can be used to transmit audio and video signals. AV amplifiers and receivers typically have multiple audio and video inputs. With their help you can connect all your audio and video equipment. On the amplifier's remote control, you can select the desired audio source to amplify or AV source to watch on your TV.

Modern audio and video equipment is connected to the network using a variety of connectors and cables. All these cables have specific names and types, as well as special color markings. Let's look at the most used tulip-type connector and figure out how to connect tulips to a TV.

What kind of connector is a “tulip”?

This type of connector is also called composite, or RCA, CINCH/AV connector, etc. This type of connector is popularly called “tulip” or “bell”. This type of connector is widely used for audio and video equipment: VCR, DVD player, game console and other devices.

Coaxial cable, SCART cable and others can also be used for connection. But it is worth noting that this type of device connection, such as a tulip, or RCA, provides the best image and sound quality.

To determine the type of signal traveling along the cable, a standard color scheme is used, in which each of the colors of the plug corresponds to a specific signal. The most common types of signals and their colors can be seen in the table below.

How to connect a tulip to a TV

Today, every TV is equipped with a special composite tulip connector.

Basic color signals:

• yellow - for video signal,
• white - for left audio signal or mono signal,
• red - for signal transmission, respectively, for the right channel.

Connecting a tulip to a TV is a fairly simple procedure in itself. To do this, simply connect all the tulip plugs, which are designated by colors, to the corresponding inputs on the TV.

It happens that a TV has many inputs with the same colors. In this case, follow the instructions below.

So, to connect an RCA cable, or tulip:

1. We find a group on the bundle of wires, which is designated by the word IN (translated from English as “in”), this group of cables can also be designated by a symbol (two arrows);
2. We find the same group on TV. It will be designated as AV2. We connect the beam to the TV;
3. At the TV input we see that each of the connectors is also labeled:
   • the letter "V" means video connection (i.e., image);
   • the letter L indicates the left audio input;
   • letter R - right audio input.

We connect the corresponding wires to the inputs.

If on the tulip you see three standard plugs - yellow, white and red, then on the TV there can only be two inputs - for the video signal (yellow), and only one audio. In this case, this means that the TV does not support stereo sound, but mono sound. Then you need to connect the first two cables, and simply leave the red one unconnected.

If you have a DVD player and you don’t know what to do with it, refer to the article.