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GB25
Glossary
CVBS (Composite Video Baseband Signal)
A technology for transmitting video signals via a cable.
Mixes luminance (brightness) and the chrominance
(colour) signals together.
DiSEqC (Digital Satellite Equipment Control)
A DiSEqC compatible receiver relies on a switching box
which detects the 22kHz tone pulsing rapidly on and off.
In this way, a certain receiver can control numerous LNBs
through a DiSEqC switching box.
Dolby Digital
An encoding system that digitally compresses up to 5.1
discrete channels of audio (left front, centre, right front,
left surround, right surround) into a single Bitstream. A
low frequency effect (LFE) channel is included providing
the sound needed for special effects.
DVB (Digital Video Broadcasting)
A set of standards that define digital broadcasts using
satellite, cable or terrestrial systems.
EPG (Electronic Programme Guide)
An electronic equivalent to a printed television listings
magazine. It is an application used with digital set-top
boxes and digital television sets to list current and
scheduled programmes that are or will be available on
each channel, including a short summary or commentary
for each programme. The information supplied in the
EPG is sent and updated by the channel broadcaster.
FEC (Forward Error Correction)
A technique for error control of data transmission.
Frequency
The property of a signal measured in cycles per second
(=Hz).
FTA (Free- To-A
ir)
An unscrambled broadcaster allowing customers to view
channels or services without paying any subscription.
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.
LNB (Low Noise Block)
A device that is mounted on an arm facing your satellite
dish, focusing on satellite signals. A LNB converts signals
received from satellite to a lower frequency and sends
them to a satellite receiver via coaxial cable.
OTA (Over the Air)
A standard for the transmission of software for
equipment, through a broadcast system. Manufacturers
reserve the right for deciding the release of the software
for their products.
Polarisation
The direction of the electrical and magnetic fields of
a signal. Satellites use both vertical and horizontal
polarisation, meaning that a frequency can be used
twice.
QPSK (Quadrature Phase Shift Keying)
Digital modulation technique in which the carrier phase
can have one of four possible values.
RF (Radio Frequency)
Television signals are modulated onto RF signals and are
then demodulated by the tuner of your TV or STBs•
RGB (Red – Green – Blue)
A technology for transmitting video signals via a cable.
RGB is a system to represent red, green, and blue colours
on a TV or monitor display. Red, green, and blue can be
combined in various proportions to obtain any colour.
Smartcard
A credit card sized card that contains updateable chip
memory. It is used to access Pay TV (encrypted) channels
or services.
S/PDIF (Sony/Philips Digital Interface format)
A standard format for the transfer of digital audio signals.
It allows the transfer of digital audio between two
devices without any conversion to and from analogue,
which could degrade the signal quality.
Transponder
A satellite is divided up in parts called transponders. A
transponder is one distribution section of thes satellite.
Each transponder can be used for distribution of several
channels or services.
Appendix
TSR (Time Shifted Recording)
A function that records the present programme
temporarily to support trick-play.
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