TechniSat MultyFocus - Manual (Page 44)

Coax cable:
Cable connection between the LNB and satellite receiver which is used to transfer the received signals and for the
power supply of the LNB.
LNB (Low Noise Block Converter):
Receiving unit centred in the focus of the paraboloidal reflector. It converts the frequency range of the satellite into
the intermediate frequency of the receiver.
LOF:
Local Oscillator Frequency; specified in MHz or GHz, depending on the LNB and the received frequency range.
Receive frequency of the receiver = Broadcast frequency of satellite - LOF
Correlation between frequency range and LOF:
11 GHz range
LOF 9.75 or 10 GHz
DBS range LOF 10.75 GHz
12.5 GHz range LOF 10.75 or 11.475 GHz
Modulation at 22 kHz:
Additional control signal, e.g. for an external switching device used to toggle between two LNBs.
Modulator
Electronic circuit in the satellite receiver or video recorder which is used to connect to a television via antenna cable.
Mode:
determines if a channel is received in mono or stereo quality.
Multyfeed:
Outdoor unit consisting of a paraboloidal reflector and multiple LNBs for the reception of multiple satellites.
OSD:
„On-Screen Display“; alphanumeric representation of information on the TV scree
Offset reflector
Special type of paraboloidal reflector which is primarily used for small to medium-sized reflectors.
Paraboloidal reflector:
Reflector of paraboloidal shape made of metal or plastic-coated which is used to focus the electromagnetic waves
which are broadcast by a satellite.
Polarisation level:
For an efficient use of the available frequency range satellites broadcast adjacent channels with opposite polarities
(alternately horizontal and vertical, or left-moving and right-moving). The reception of both polarisation levels requires
two single LNBs or a V/H LNB.
Polarizer
An equipment which is used to switch the polarisation levels by means of an actuator motor drive (mechanical) or
through a direct current (ferrite or magnetic). This allows the reception of both polarisation levels over a single LNB.
Radio channels:
Apart from the television channels, satellites also broadcast radio channels which are transported on subcarriers. In
addition to the subcarrier’s frequency further parameters have to be set:
Audio bandwidth, Deemphasis, and Mode.
Receiver:
See satellite receiver.
Satellite:
Name and position of the satellite relative to the orbit, e.g.:
Name: Eutelsat Position: 13° East or -13°
Telecom 2B 5° West or +5°
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*M-Focus 2.6.95 14.12.1999 10:39 Uhr Seite 44