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14. SAT lexicon – Explanations of technical terms
39743
SCART:
21-pin plug standard for bidirectional image and sound transmission. Switching voltages and data can
also be transmitted. 10-pin scart cables are sufficient for a satellite receiver or VHS video recorder. If a
decoder or Super-VHS video recorder is used, 21-pin scart cables must be used! There are 3 common
standards, which must be set on the video recorder or television so that the picture signal of the SAT
receiver can be transmitted faultlessly: FBAS (setting on TV/video e.g. “C-Video”) for SAT receiver,
standard video recorder (e.g. VHS or Video8) S-VHS (“Y/C” or “S-Video”) for Super VHS or Hi8 video
equipment, sometimes also for digital SAT receivers. RGB (“RGB” is used e.g. for laser disk players,
decoders or large-screen projectors).
Switching voltage:
Switching voltages switch a connected device to a particular status (e.g. AV mode) via the scart cable.
Switched on satellite receivers and video recorders in playback mode usually “force” the television to
switch to AV mode. Not all TV and video devices recognise this switching voltage, and must be switched
over manually if necessary.
Symbol rate:
Data speed of the signal.
Terrestrial:
Terrestrial programmes are transmitted from and received on earth (lat. “Terra”). This includes, for
example, TV programmes in the UHF and VHF range (including cable TV!) and VHF radio transmitters.
Terrestrial antennae can be connected to the SAT system via a so-called transfer switch or multi-switch
with terrestrial input. Terrestrial transmitters and SAT signals can thus be transmitted via a shared antenna
cable and then be divided up again using a SAT connection box (SAT/TV/Radio). The introduction of
terrestrial programmes is recommended, because:
1. Not all TV and radio programmes (e.g. regional transmitters) are transmitted via satellite;
2. Terrestrial programmes can be recorded independently of SAT-TV;
3. They can still be used in the event of failure of the SAT system (e.g. antenna displaced by storm).
Transponder:
Transmission unit on the satellite: In the digital range, the parameters are described by specifying
frequencies and symbol rates.
Universal LNB:
Universal LNBs enable the reception of the entire lower (Low Band) and upper frequency range (High
Band). Universal LNBs are mainly required for the reception of digital programmes. Standard types:
Universal Single LNB (max. 1 subscriber), Universal Twin LNB (max. 2 subscribers) and Universal Quattro
LNB for distribution systems.
Distribution or multi-subscriber systems:
The basis for constructing a distribution system (2 - 16 subscribers) are double or twin LNBs (2 outputs),
or Quattro LNBs (4 outputs) in digitally compatible systems. The connections of the LNBs are connected to
so-called multi-switches (e.g. 4- or 8-way). The outputs of the multi-switches are run directly (“radially”)
to each subscriber. Additional terrestrial programmes (local TV and radio transmitters) can be introduced.
Summary of Contents for DVR 9200
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