Kathrein UFD 545 - Manual (Page 36)

Installation Menu
36
You should not change the following settings without good reason as they
represent factory settings or operational settings that are adapted to your receiving
system.
New settings are only required when changes or expansions are made to the
reception system.
The main menu consists of the following submenus:
Select the "Installation" menu with the
menu button
M
, the
ou
buttons
in the main menu and
O
. If set, you
must also enter the password. Select the
menu points with the
ou
buttons .
LNB configuration
The first submenu is the "LNB configuration". Press
O
to open this menu.
Normally, you should not make any
changes in this submenu. Before making
any changes, however, you should make
a note of the settings in the form provided
at the end of this User's Guide.
Your receiver is set at the factory to the
satellites of the ASTRA and HotBird
systems.
The other basic settings are shown in the
illustration opposite.
Oscillator frequency L.O.
Satellite receiver systems consist of the parabolic antenna (satellite dish) with the
actual receiving system mounted in front of it (LNB – Low Noise Block Converter or
LNC - Low Noise Converter) which converts the HF signals of the satellite to a
lower frequency so it can be processed by a satellite receiver.
The satellite transmission frequencies are within the following ranges:
10.7…11.7 GHz Low-band analogue transmission
11.7…12.75 GHz High-band digital transmission
(valid for ASTRA satellites at 19.2° E)
The reception frequency of the receiver, however, is in the range from 950 to
2150 MHz. The high frequencies are therefore stepped down with the aid of the
oscillator frequency (LO frequency / LO = Local Oscillator of the LNB) to a lower
frequency. Various oscillator frequencies are used for this purpose depending on
the satellite frequency range and the type of system.
For ASTRA and Eutelsat receiver systems, this frequency is normally 9.75 GHz
(9750 MHz) for the lower frequency range (low-band) and 10.6 GHz (10600 MHz)
for the upper frequency (high-band). Older receiver systems still operate in the low-
band range with a 10 GHz oscillator frequency.
The receiver generates its required frequency by subtracting the oscillator
frequency from the satellite transmission frequency stored for each channel. You
only need to set the oscillator frequencies that your receiver system actually uses.