Qviart undro Manual Del Usario página 30

between satellite receivers and peripheral equipment using only the existing coaxial
cable.
DVB
The Digital Video Broadcast group was created to establish a technical framework for
the introduction of digital video broadcasting systems.
LNB(low-noise block converter)or LNBF
An electronic unit mounted on the satellite dish. It receives the signals reflected by the
dish and converts them to signals that can be used by the digital satellite receiver.
HDMI(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.
GHz
The prefix giga means milliard, and Hertz means cycles per second. Signals in the
GHz range are often called microwaves.
MHz
The prefix mega means million, and Hertz means cycles per second.
MPEG
Moving Picture Experts Group. Established by the International Standards
Organization to provide the basis for a picture coding and compression system.
Forward Error Correction (FEC)
A system of error control for data transmission.
Polarization
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.
QPSK/ 8PSK(Quaternary Phase Shift Keying/8 Phase Shift Keying)
Phase-shift keying in which four different phase angles are used.
Transponder
An automatic device that receives, amplifies and retransmits a signal on a different
frequency.
Symbol rate
Speed of the digital transmission
Scrambled TV programmer
Some TV programmers are transmitted in scrambled form.
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