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| DTH Services » Glossary |
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Glossary |
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Clarke Belt - Named after its founder Arthur C. Clarke, the Clarke Belt is an orbit used by satellites at a height of 22,250 miles, in which satellites make an orbit in 24 hours, yet remain in a fixed position relative to the earth's surface.
Closed Captioning
Is an option that provides text in the broadcast signal for a narrative description of dialogue, action sounds, and other elements of the program. This is great for the hearing impaired.
Coax Cable - Coax or coaxial cable is the standard type of cable used by all satellite TV technicians. Coax cable carries the signal from the dish to the satellite receiver and on to your VCR and TV.
Commercial AccountA business customer who uses DIRECTV hardware to view non-residential DIRECTV services.
Compression - A term used to denote reducing the amount of bandwidth needed to transmit video or audio, thus increasing the capacity of the satellite transponder.
Direct Broadcast Satellite (DBS)DBS is the signal frequency range (11.70-12.40ghz) intended for direct TV broadcast by satellite TV program providers.
Digital Compression - Digital compression is a process of translating video images into a digital code. Its purpose is to take up less transmission space than the original signal would have, allowing more channels per satellite transponder.
Diplexer - Diplexers allow you to use one coax cable for both your VHF/UHF TV antenna and satellite signal. Diplexers must be used in pairs. One diplexer is installed outside to combine the signals from the satellite dish and TV antenna onto a single coax cable, and the second is installed indoors at the satellite receiver to separate the signals once again. Diplexers may also be used in conjunction with multi-switches - with one diplexer used for every satellite receiver connected to the system.
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