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Coaxial cable:
Cable used to connect the LNC to the satellite receiver, used
to transmit the signal received as well as to provide power to
the LNC.
LNB/LNC (Low Noise Block Converter):
Receiving unit located at the focus of the parabolic dish
antenna, converts the frequency range of the satellite to the
intermediate frequency of the digital receiver.
LOF:
Local oscillator frequency; expressed in terms of MHz or
GHz; varies depending on the LNC and the frequency range
received. Receiving frequency of the digital receiver =
Broadcast frequency of the satellite - LOF
Modulation at 22 KHz:
Apart from 14/28 Volt switching, this also serves to switch
between 2 LNCs. In the Universal LNC it serves to switch to
the High Band
Modulator:
Switch in the satellite receiver or the video recorder, used to
connect the television set via antenna cable
Parabolic dish antenna:
Dish antenna made of aluminium or coated synthetics, has a
parabolic shape to focus and concentrate the electromagnetic
waves broadcast by the satellite in a focal point
Polarisation plane:
To improve utilization of the available frequency range, satelli-
tes broadcast neighbouring programmes using opposite pola-
risation (horizontal and vertical or laevo-rotatory and dextro-
rotatory, i.e. left-turning and right-turning). To receive both pla-
nes you require either two Single LNCs or a V/H-LNC.
Receiver: see Satellite receiver
Satellite:
The satellite is usually described in terms of its operator and
its orbital position,
ASTRA 19° East
EUTELSAT 13° East
Satellite receiver:
The signals received and converted by the LNC cannot be
processed by the television set. The signals are processed by
the satellite receiver in such a way that its outputs provide
audio and video signals (AV) which can be interpreted by the
television set.
SCART:
Type of connector used on television sets, video recorders,
satellite receivers and other home electronics components to
transmit audio and video signals (AV).
Software Update:
Digital television is a new medium that provides improved
sound and picture quality as well as the facility to provide
interactive services.
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