Installation Menu

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 the as-delivered settings.

Changing the oscillator frequency

Move over to the right-hand side in the LNB configuration menu by pressing O, 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 oubuttons to go to this setting.

Press L4x to exit the menu. At the same time, the receiver will 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 "ON".

Normally, the supply voltage should always be switched on.

For communal or party systems, you must check whether the supply voltage must be switched off!

Standby

Under this menu point the supply voltage for the LNB in receiver standby mode can be switched on and off. It can be switched off for individual and communal systems.

The factory setting is "OFF".

Receiving two satellites

If your receiver is connected to a multifeed antenna that is also aligned with the HotBird satellites for instance, you will need to change the receiver settings for the DiSEqC signal. The same, of course, also applies to other satellites. (DiSEqC = Digital Satellite Equipment Control).

Different control signals are required for the purpose of selecting the satellite signals. To date, the LNB supply voltages 14/18 V and the 22 kHz signal (superimposed on the LNB supply voltage) have been sufficient for signal selection in the majority of applications. With these four switching signals it is possible to switch between horizontally and vertically polarized signals as well as between satellites (multifeed reception).

However, additional control signals are now required for LNB activation and signal selection in view of the expansion of the frequency range to 12 GHz (high-band range) and for receiving more than two satellites.

The "DiSEqC" control signal is responsible for this task. This signal represents a special modulation of the already existing 22 kHz signal.

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Kathrein UFD 545 manual Changing the oscillator frequency