reflected by the dish and converts them to signals that can be used by the
digital satellite receiver.
ØHDMI (High-Definition Multimedia Interface)
An all-digital audio/video interface that supports standard, enhanced, or
high-definition video, plus multi-channel digital audio on a single cable. It
transmits all ATSC HDTV standards and supports 8-channel digital audio.
ØGHz
The prefix giga means milliard, and Hertz means cycles per second. Signals
in the GHz range are often called microwaves.
ØMHz
The prefix mega means million, and Hertz means cycles per second.
ØMPEG
Moving Picture Experts Group. Established by the International Standards
Organization to provide the basis for a picture coding and compression
system.
ØForward Error Correction(FEC)
A system of error control for data transmission.
ØPolarization
Polarization allows several programmers to be fit into the same frequency band.
The signals from a satellite are transmitted either with linear (vertical or
horizontal) polarizations or circular (right or left) polarization.
ØQPSK(Quaternary Phase Shift Keying)
Phase-shift keying in which four different phase angles are used.
ØTransponder
An automatic device that receives, amplifies and retransmits a signal on a
different frequency.
ØSymbol rate
Speed of the digital transmission.
ØScrambled TV programmer
Some TV programmer are transmitted in scrambled form.
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