10 Technical Terms
Antenna cable:
Cable used to connect the modulator of the satellite receiver to the antenna input socket of the television set. Used as an alternative where no SCART socket is available External installation:
Term used to describe those components of the total system located outdoors, consisting of the parabolic or offset dish antenna, as well as one or several LNCs, used to receive sig- nals from one or more satellites
AV: see SCART
Data compression/MPEG1/MPEG2:
The transmission of the current television standard (625 lines, and a picture frequency of 50 Hz) results in a digital data volume of 216 MBit/s.
This would require enormous bandwidths which are simply not available, neither via satellite nor via terrestrial reception. Therefore the data is compressed in order to achieve a reduction in the data volume. For
Adaptation of the audio frequency band to the broadcast sig- nal, this is determined by the broadcast parameters of the satellite
DiSEqC:
Digital Satellite Equipment Control: a digital control/switching signal used to control
DVB:
Digital Video Broadcasting: A digital universal broadcast tech- nology used to transmit pictures, graphics, sound and text, i.e. data in any imaginable form, in appropriate quality.
Frequency:
A physical term, indicates the number of vibrations per second, expressed in terms of the unit Hertz (Hz)
Frequency range:
a) Satellite respectively LNC:
11 GHz range from 10,70 GHz - 11,70 GHz, 12 GHz range from 11,70 GHz - 12,75 GHz
b) Receiver: Intermediate frequency or 1.IF 950 to 2150 MHz
Unit | Description | 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 |
Example:
A | B | A | B |
Position | Position | ||
Ausgang | Ausgang | ||
A B
Option
Ausgang
(Fig.
59