HDTV Cables HDTV broadcasts are conducted. There are two kinds of HDTV connections: analog or digital. HDTV cables are used for these connections. They must be of good quality and well installed to ensure a completely reliable. HDTV cable analog HDTV signals are either analog RGB (usually RGBHV) or Component video (Y / Pb / Pr). The component connections are made with RCA connectors. These connectors transfer SDTV NTSC signals from external devices such as DVD or VHS to HDTV screens. Component cables are usually color coded: green for Y, blue for Pb and Pr red audio cables are color-coded: red for right audio and white for left audio. Seventy-five (75) ohm video coaxial cables are suitable for these applications. These end HDTV cables with RCA connectors, BNC plugs or VGA monitor. Analog HDTV signals are ten times stronger than NTSC. Scale HDTV signals up to 35 MHz, while NTSC is only up to 3. 5 MHz E ‘important that the cables that connect devices HDTV maintain a consistent set impedance of 75 ohms. HDTV cables that do not meet the correct specifications will cause ghosting or “call” of projected images, because portions of the signal issues back and forth within the cable instead of being delivered seamlessly to the screen. Before buying cables analog HDTV, make sure that the device has been tested sweep, at least up to 105 MHz. Also, check that the tolerance is 75 ohm impedance within + / – 1. 5 ohms. HDTV Digital Cables Digital exist in SDI or HDTV Serial Digital Interface. However, this cable is very strong yet commercially available. The market are the DVI (Digital Visual Interface) and HDMI (High-Definition Multimedia Interface). Bi-directional connection between your computer and monitor is available through dual-channel versions of DVI. These connections carry only video. Audio must be carried out by other cable HDTV. HDMI delivers uncompressed digital audio between devices, such as an STB and a display. Smaller connectors are used with HDMI. The HDTV cable HDMI interface allows two-way also. HDMI uses a 19 pin connector, for single link or a larger 29 pin dual link. Cables to connect the DVI and HDMI devices are also available. DVI and HDMI are characterized by very short lengths of cable, because intended to host a copy protection system. HDTV does not use twisted pair cables digital coaxial cables that use analog HDTV. DVI and HDMI work seamlessly over short distances, but some cables poor waver over ten meters. Practically non-HDTV digital cable works over fifteen meters. Preformed DVI cables up to 10 feet in length are available. Longer lengths require specialized equipment and are expensive. Although interconnections produce digital video and audio of the highest quality in performance over long distances is the limitation of digital HDTV cables. Other cables S-Video Cables. are used in some televisions to enhance picture quality of NTSC signals. Audio must be interconnected separately using RCA cables. S-Video cables are available in any length. FI cables are coaxial cables with F connectors used to connect to antennas or satellite dishes for cable TV system. Several possible cables are selected according to the length required. RG-59 is acceptable for short lengths, but a cable with low loss is required for roof-top antennas. DB 15 Mini RGB monitor cables are used to connect PC to HDTV display with analog RGB interfaces. These cables extend up to 5 meters. Special cables are needed beyond this length. Screw locks secure the connector to justify a firm connection. Firewire/1394 was designed for digital video connections. Audio and video are carried out together. The four-pin version is the most common, but six-pin versions are also available for some devices. HDTV cable trunking like these are up to 3 meters. SPDIF Dolby Digital Audio format is often transmitted as an optical drive. Fiber connection, a fiber optic cable which is also called “optical audio output cable, may be used to send the message for the decoder of audio system. Excessive bending or twisting of these cables should be avoided in order not to break the fiber inside.

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