Kathrein UFS 902, Руководство по эксплуатации

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SHORT TECHNICAL GLOSSARY
Eb/No ratio
The Eb/No ratio is a measure of the signal to noise ratio of a digital signal. The value is not identical to
the C/N value familiar from analogue reception technology. At Eb/No values below 5 dB no reception is
normally possible.
EUTELSAT
European Satellite operator, based in Paris. Many orbit positions and European customers. Transponders
in the frequency range 10.7-12.75 GHz.
FEC
FEC is the abbreviation for “Forward Error Correction”. A technique for reducing the error rate of data
transmission. Additional bits are inserted into the data stream, so that error-correction algorithms can be
used on reception. The FEC error rate corresponds to the Viterbi rate.
HD – Ready
This is a label created by the EICTA (European Information, Communications and Consumer Electronics
Industry Technology Association) for equipment that is capable of reproducing HDTV.
HDCP – High-bandwidth Digital Content Protection
Scrambling system which protects the HDMI and DVI interfaces for secure transmission of video and
audio data. HDCP should be used in Europe for HDTV standard transmissions.
HDMI – High Defi nition Multimedia Interface
Digital interface for digital video and audio data transmission (preferred for HDTV).
HDTV – High Defi nition Television
High resolution television with a resolution 6 times higher or fi ner than PAL or NTSC. However, there is
no compatibility, as the transmission process DVB-S2 and the compression technique MPEG-4 are
used for broadcasting.
The principal features of HDTV are the larger picture format (16:9), twice the number of scan lines
(currently 625, increased to 1,250) and digital sound quality.
High band
Satellite frequency range between 11.7 GHz and 12.75 GHz.
H.264
Another designation for MPEG-4.
LNB - Low Noise Block Converter
Converts the satellite downlink frequencies to 1
st
Sat IF.
Low Band
Satellite frequency range between 10.7 GHz and 11.7 GHz.
MPEG-2
MPEG is the abbreviation for Moving Picture Experts Group, a working group that formulates
internationally applicable standards for the digital compression of video and audio. MPEG-2 has
established itself as the standard for compression of digital TV signals. MPEG-2 works up to a data rate
of 100 Mbit/s.
MPEG-4
A further development of MPEG-2 with even higher data compression, intended for HDTV transmissions.