8 Technical Terms
Antenna cable:
Cable connection between the modulator of the satellite receiver and the antenna input of
the TV set, used as an alternative where no SCART connection is provided.
AV: see SCART
Coaxial cable:
Cable connection between the LNB and the satellite receiver, transmits the signals received
and transmits power supply to the LNBs.
Cryptoworks:
Form of digital encryption (scrambling)
Data compression/MPEG1/MPEG2:
The transmission of an image in accordance with current TV standards (625 lines with a pic-
ture frequency of 50 Hz) results in a digital data volume of 216 Mbit/s. This would require
bandwidths not available in terrestrial or satellite systems. The data volume is thus subjected
to a process of data reduction. MPEG2, which is an expanded development of MPEG1, has
been set in Europe as the worldwide standard for data compression.
Deemphasis:
Making the audio frequency curve conform to the broadcast signal, this is determined by the
transmission parameters of the satellite.
DiSEqC:
Digital Satellite Equipment Control - a digital control signal used to control DiSEqC-compa-
tible components of the external unit via the antenna connection.
DVB:
Digital Video Broadcasting - a universal digital transmission technology for video images,
graphics, sound and text, i.e. for data in any conceivable form and in every possible and
appropriate quality.
External unit:
Description for the entire system mounted outdoors, consisting of the parabolic dish antenna
as well as one or more LNBs, to receive signals from one or more satellites.
Frequency:
Physical unit for measuring the number of oscillations per second, expressed in Hertz (Hz) or
cycles per second.
Frequency range:
a) Satellite or LNB
11 GHz range from 10.70 GHz to 11.70 GHz, 12 GHz range from 11.70 to 12.75 GHz
b) Receiver - Intermediate Frequency or 1st Intermediate Frequency 950 to 2150 MHz
Unit of frequency
Name
Oscillations per second
1 Hz
1 Hertz
1
1 kHz
1 Kilohertz
1.000
1 MHz
1 Megahertz
1.000.000
1 GHz
1 Gigahertz
1.000.000.000
Intermediate Frequency:
The frequency range broadcast by satellite cannot be transported by cable, the LNB therefo-
re transforms the incoming signal to the intermediate frequency range of 950 to 2050 MHz,
thus allowing the signal to be transmitted to and modulated in the receiver.
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