Operation instructions | SKT 40-0x | SKT 80-0x | SKT 40-0xM | SKT 80-0xM
6
2017-01-26 | Technical changes, design modifications, errors and misprints are subject to change without prior notice.
1.3.
Inputs/tuner
The quattro module includes four independent tuner and the octo module includes eight of them.
Headend modules with 8PSK/QPSK tuner 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 has to be switched off (see 3.3 on page 16) 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 frequency and demodulation are both done 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.
