What is a Coaxial Converter?

The coaxial output is (English Sony / Philips Digital Inter Face (SPDIF), which is the abbreviation of SONY, PHILIPS home digital audio interface). It can transmit LPCM stream and surround compressed audio signals like Dolby Digital and DTS.

Coaxial output: The transmission signal is LPCM stream, Dolby Digital, DTS, which has the advantages of flexible interface and stronger anti-interference ability.

Coaxial output English: Coaxial, generally put together with S-video, the connector is RCA, which is commonly known as the lotus head.

The structure of the coaxial wire is the same as its name. It is designed with the same axis. Most of the central axis can conduct copper wires. The outer layer is insulated with plastic and the outer layer has a layer of copper or alloy conductor. Insulation material sheath. For coaxial cables used in audio and video, most of the two sides of the cable use lotus / RCA plugs.

Coaxial SPDIF with COAXIAL logo on the back panel of the equipment. The digital coaxial interface uses a coaxial cable with an impedance of 75 as the transmission medium. Its advantages are constant impedance, wide transmission frequency band, and high-quality coaxial cable bandwidth can reach several hundred megahertz. The time base error of digital coaxial transmission is very small, so this transmission method has a better performance on sound quality. ^[1]

Digital coaxial connection is another interface that uses SPDIF interface to output digital audio signals in addition to optical fiber. Digital coaxial wire uses a coaxial cable with an impedance of 75 ohms as the transmission medium. Its advantages are constant impedance and wide transmission frequency band. Coaxial digital standard connector is

Coaxial SPDIF is generally called coaxial input, and COAXIAL is marked on the back panel of the equipment. The digital coaxial interface uses a coaxial cable with an impedance of 75 as the transmission medium. Its advantages are constant impedance, wide transmission frequency band, and high-quality coaxial cable bandwidth can reach several hundred megahertz. The time base error of digital coaxial transmission is very small, so this transmission method has a better performance on sound quality. However, please pay attention to the impedance matching of the transmission wire when using it. Cooperating with 75 coaxial cable can ensure constant impedance and ensure correct signal transmission. That is to say, in the matching of the transmission wire, the 75 ohm coaxial wire suitable for transmitting high-frequency digital signals should be used as the matching standard, which is generally referred to as "digital wire". Generally speaking, the coaxial terminal output is similar to the audio quality of the optical fiber output. Therefore, some DVD players only have digital coaxial output and omit the optical output function. ^[3]