Strong SRT 4950E User Manual page 29

 DiSEqC
DiSEqC(Digital Satellite Equipment Control)system, it is a communication bus
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.
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