Signal transmission mode and interface of lotus head audio cable


Lotus head audio cable is a kind of audio cable. The lo […]

Lotus head audio cable is a kind of audio cable. The lotus interface RCA head, commonly known as lotus cable, is suitable for connecting vcd, dvd, television, cassette player, cd, etc. and speakers, amplifiers, mixers and transmitting their audio signals. It is widely used in recording studios, stage speakers, Video and audio system.
Signal transmission method
The RCA terminal adopts the coaxial signal transmission method, the central axis is used to transmit the signal, and the contact layer on the outer edge is used for grounding, which can be used to transmit digital audio signals and analog video signals. RCA audio terminals are generally marked in different colors in pairs: red for the right channel and black or white for the left channel. Sometimes, the center and surround channel cables will be marked with other colors to facilitate the distinction when wiring, but all the RCA connectors in the entire system are the same in terms of electrical performance. Generally speaking, the RCA stereo audio cable is a set of left and right channels, and each channel is a line in appearance.

RCA interface sample/ and connection method

There are usually pairs of white audio ports and yellow video ports. When RCA (commonly known as lotus head) is often used for connection, you only need to connect the standard AV cable with lotus head to the corresponding interface.
Advantages of RCA interface
The AV interface realizes the separate transmission of audio and video, which avoids the degradation of image quality due to audio/video mixing interference. However, because the AV interface is still transmitting a mixed luminance/chrominance (Y/C) video signal, the display device still needs to perform luminance/color separation and chrominance decoding on it before imaging. This process of mixing first and then separating It will inevitably cause the loss of the color signal, and the chrominance signal and the luminance signal will also have a great opportunity to interfere with each other and affect the final output image quality. AV still has a certain vitality, but because of its insurmountable shortcoming of Y/C mixing, it cannot be used in some occasions that pursue the limit of vision.
The most widely used interface on audio and video equipment, almost every audio and video equipment provides this type of interface for audio and video input and output.