Thus, when using device with VGA interface, the link distance should be less than 10 m.
Though VGA analog interface is used for high definition video, including resolutions of 1080p and highe, the transmission bandwidth of VGA is high enough to support even higher resolution playback, there can be picture quality degradation depending on cable quality and length. VGA connectors and cables carry analog component RGBHV (red, green, blue, horizontal sync, vertical sync) video signals, and VESA Display Data Channel (VESA DDC) data. This type of connector is found on many video cards, computer monitors, and high definition television sets. It is a three-row 15-pin DE-15 connector. video optical converter, or also called coxa to fiber converter or video multiplexer. Because BNC connector costs lower than other video connectors and is widely used for composite video on commercial video devices, e.g. Nowadays, many composite video devices are still designed with the BNC interface. BNC connectors are used with miniature-to-subminiature coaxial cable in radio, television, and other radio-frequency electronic equipment, test instruments, and video signals. They are usually applied for frequencies below 4 GHz and voltages below 500 volts.
BNC connectors are made to match the characteristic impedance of cable at either 50 ohms or 75 ohms. The BNC (Bayonet Neill–Concelman) connector is a miniature quick connect/disconnect RF (radio frequency) connector used for coaxial cable. Common Types of Interface on Video Optical Converter BNC (Bayonet Neill–Concelman) For instance, in CCTV system, the most typical technology for this purpose has been the CWDM (Coarse Wavelength Division Multiplexing) technology which allows to establish several optical layers into a single fiber. Moreover, optical multiplexing can be taken into much higher optical link densities by adopting more optical spectrum in use. This multiplexing process is generally achieved through TDM (Time Division Multiplexing) technology.
In addition, to achieve more services within one fiber optic link, it is possible to multiplex multiple video channels and even additional audio, data and other signalling types to a digital stream that can maintain a full quality of each service embedded. Their role is to achieve the photoelectric conversion.
Generally, video optical converter is used by pairs, a transmitter and a receiver. 4-channel V/A/D (Video/Audio/Data) fiber multiplexer. While multiplexer, as its name suggests, it is usually a multi-channel and multiple media video converter, e.g. In most cases, video extender refers to the video converter which is with a high-quality interface, e.g. You may find that it is also called video multiplexer or video extender by some vendors.
Video optical converter, is the general name of video transmission device. This tutorial aims to introduce the classification of video optical converter according to its interface. Some interface technologies, including HDMI (High-Definition Multimedia Interface), VGA (Video Graphics Array), SDI (Serial Digital Interface) and other high quality video interface are now widely used in video transmission system. Furthermore, current video transmission technology has overcome the challenge of distortion over fiber optic transmission. The advent of video optical media converter has broken this barrier. But in the uncompressed video transmission system, it is not easy to complete the simultaneous transmission of multiple video and data signals. With the increasing demands on multimedia service, people often need to transmit multiple video image signals and multiple data signals in the meantime. Fiber, with its benefits, is also used in Video transmission, especially digital video transmission. Recent years, we have witnessed a very rapid growth of fiber optic communication.