*M-Focus 2.6.95 14.12.1999 10:39 Uhr Seite 43
10 Technical terms
Actuator
Motor with gears and push bars to drive medium to
Antenna cable
Cable connection between modulator and satellite receiver and antenna input of the television set, may be used alternatively when there is no SCART connector attached.
Audio bandwidth:
Option that separates two subcarriers; it is determined by the broadcasting parameters of each satellite. An excessive audio bandwidth results in an interference between the desired subcarrier and an adjacent subcarrier; a very small bandwidth may lead to distortions.
Outdoor unit:
Term used to describe the entire system which is mounted outdoors. It consists of a paraboloidal reflector and one or more LNBs which are used to receive the broadcasts from one or more satellites.
AV
See SCART
Combysat LNB
LNB used to receive the entire frequency range between 10.7 and
12.75GHz. The supply voltage is used to switch from the 11 GHz range (14V) to the DBS/12 GHz range (18V). The polarizer toggles between the polarisation levels.
DBS:
Direct Broadcasting Satellite; refers to satellites with a very high broadcasting power in the DBS frequency range, e.g. TDF.
Decoder:
Individual device or electronic circuit incorporated in the satellite receiver which is used to decode encoded channels (e.g. Premiere).
Deemphasis:
Adaptation of the audio frequency waveform to the broadcast signalling; determined by the satellite’s broadcasting parameters.
Single LNB:
LNB used to receive on one polarisation level.
Frequency: |
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a) Satellite or LNB: 11 GHz range | 10.7 | to | 11.7 GHz |
DBS range | 11.7 | to | 12.5 GHz |
12.5 GHz range | 12.5 | to | 12.75 GHz |
b)Receiver: Intermediate frequency or 1st I F 950 to 2050 MHz
H/H mount
Motor with gears and integrated support mechanism to drive small to
Hz: |
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Frequency unit of measurement |
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1 | Hz | (Hertz) | = 1 | vibrations per second |
1 kHz | (Kilohertz) | = 1,000 | vibrations per second | |
1 | MHz | (Megahertz) | = 1,000,000 | vibrations per second |
1 | GHz | (Gigahertz) | = 1,000,000,000 | vibrations per second |
Horizontal polarisation:
See polarisation level
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