Operation instructions | Serie RFQ-845 and Serie RFO-845
1.3.
Inputs/tuners
The quattro module includes four independent tuners and the octo module includes eight of them.
Headend modules with 8PSK/QPSK tuners can receive DVB-S/S2.
Headend modules with multituner can receive DVB-S/S2, DVB-T/T2 or DVB-C.
For receiving DVB-T/T2 or
DVB-C the LNB power supply has to been switched off (see 3.3 on page 17) before connecting a antenna
cabel to one of the HF inputs!
Connection to the LNBs
On the SAT-IF input the headend modules have a remote supply voltage for the LNB and use DiSEqC 1.0
functionalities. Therefore, they can be connected directly to the LNB.
Multiswitches as input distributors
Optionally, you can also use multiswitches as input distributors. The advantage of this solution is that you can set
both the SAT IF level and the satellite via the user interface. Changes in the list of programmes can be made
using remote maintenance, so that it is not necessary to change or modify the input distribution on site.
Demodulation
The selection of the transponder and the demodulation of the QPSK/8PSK modulated signal are both made in the
tuner.
If needed, the programmes from the data flow of the demodulated transponder can be filtered (Remux mode).
Thanks to the Cross Multiplex Mode, FTA programmes (Free to Air) can be filtered from the data flow of several
tuners for a common output channel and be bundled again. The prepared data flow is passed on to the
modulators.
62016-10-31 | Technical changes, design modifications, errors and misprints are subject to change without prior notice.
