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Skysat Teledigi 3 S Manual

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Frequenz
Physikalische Größe, gibt die Anzahl der Schwingungen pro Sekunde an, Einheit ist das
Hertz (Hz).
Frequenzbereich
a) Satellit beziehungsweise LNB:
11 GHz Bereich von 10,70 GHz - 11,70 GHz,
12 GHz Bereich von 11,70 GHz - 12,75 GHz
b) Receiver:
Zwischenfrequenz oder 1.ZF 950 bis 2150 MHz
Einheit Bezeichnung Schwingung pro Sekunde
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
Koaxialkabel
Verbindungskabel zwischen LNB und Satellitenreceiver, zur Übertragung der empfangenen
Signale und zur Stromversorgung des LNBs.
LNB/LNC (Low Noise Blockconverter)
Empfangseinheit im Brennpunkt des Parabol/Offsetspiegels, Umsetzer vom Frequenzbereich
des Satelliten in die Zwischenfrequenz des Digital-Receivers.
LOF
Lokaloszillatorfrequenz: Angabe in MHz oder GHz; je nach LNB und empfangenem
Frequenzbereich unterschiedlich. Empfangsfrequenz des Digital-Receivers = Sendefrequenz
des Satelliten - LOF.
Modulation mit 22 KHz
Dient neben der 14/18 Volt- Umschaltung zur Umschaltung zwischen 2 LNBs. Bei Universal-
LNB zur Umschaltung in den High-Bereich.
Parabolspiegel
Parabolisch geformter Spiegel aus Metall oder beschichtetem Kunststoff zur Bündelung der
vom Satelliten abgestrahlten elektromagnetischen Wellen in einen Brennpunkt.
Polarisationsebene
Zur besseren Ausnutzung des verfügbaren Frequenzbereiches senden Satelliten benachbar-
te Transponder mit entgegengesetzter Polarisation (horizontal und vertikal oder linksdrehend
und rechtsdrehend). Zum Empfang beider Polarisationsebenen werden zwei Einzel-LNBs
oder ein V/H-LNB benötigt.
Receiver
siehe Satellitenreceiver
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bed_anl_Teledigi_Skysat 3 S_mit ISIPRO Q4.qxd 13.10.2008 8:41 Uhr Seite 67
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