Kathrein UFD 515, Руководство по эксплуатации

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Setting system parameters
HotBird systems.
The other basic settings are shown in the illustration.
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 RF 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 ( Low-band / analogue transmission)
11.7…12.75 GHz High-band (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 converted 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,
which your receiver system actually uses. Therefore, before changing
the LO frequency, make sure that this is at all necessary.
The oscillator frequencies shown at the top of the picture are factory
settings.
Changing the oscillator frequency
Move over to the right-hand side in the LNB configuration menu by
pressing
O
and the setting for LO High will be highlighted in colour.
Using the number buttons, you can now enter a frequency matching
your system. The same also applies for the LO Low setting. Press the
ou
buttons to go to this setting.
Exit the menu by pressing
L
4 times. The receiver will
simultaneously confirm that the values have been saved.
If a setting is incorrect, you will see the following message on the
screen :
Bad or no signal
Operation
Factory setting is "on."
Normally, the power supply should be switched on.
For communal or party systems, you must check whether the
supply voltage must be switched off!
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