Operation instructions | SKT 40-0x | SKT 80-0x | SKT 40-0xM | SKT 80-0xM
12 2017-01-26 | Technical changes, design modifications, errors and misprints are subject to change without prior notice.
2.4.
Power supply
The modules have two identical connecting sockets on the bottom for the power supply. Both are linked
together internally. One of both connecting sockets is used to get the operating voltage from the power supply
unit or from another module. The second one can be used to loop the operating voltage through to the next
module or to the output combiner of the base unit. With the DC patch cable (SKZ 40-00) included in the scope
of delivery, the modules can be connected together.
While looping the modules through, a maximum of 3 x SKT 80-0x or 4 x SKT 40-0x can be connected
together.
It is imperative to use a power supply unit with sufficient output power for your application!
Note that the power supply unit has to supply also the LNBs and the active combiner of the
headend base units if necessary!
2.5.
Connection to DVB-S
2.5.1.
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.
2.5.2.
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 programmmes can be
made using remote maintenance, so that it is not necessary to change or modify the input distribution on site.
2.6.
Connection to DVB-T/T2 or DVB-C
Before connecting the antenna cabel, the LNB power has to be switched off (see 3.3 on page 16). Active DVB-
T antennas have to be supplied by an external power supply.
The input level has to be 45-85 dBµV.
