2019-09-29 | Technical improvements, changes in design, printing- and other errors expected.
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2.4.
Equipotential bonding
If the device is mounted in the headend base unit, the connection to the equipotential bonding has to be
done via the headend base unit. Observe the operation instructions of the headend base unit!
If the module is mounted external a headend base unit the module and the power supply unit must be
connected to the equipotential bonding according to EN 60728-11. Use the equipotential bonding
connection at the device.
If the 19“ units are mounted in a 19“ Rack the unist must be connected to the equipotential bonding
according to EN 60728-11.
To connect the outer conductor of the coaxial cable to the equipotential bonding, use e.g. QEW earthing
angles or CFA earth connection blocks at the inputs of the modules and output of the combiner.
2.5.
Power supply
2.5.1.
Headend modules
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 4 x SKF 40-00M 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!
2.5.2.
19“ units
The 19 "units have a built-in power supply. For example, connect the units to an electrical outlet (100 ... 240
VAC / 50 ... 60 Hz).
2.6.
Connection to DVB-S/S2/S2x
2.6.1.
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.
2.6.2.
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.
2.7.
Connection to DVB-T/T2 or DVB-C
Before connecting the antenna cabel, the LNB power has to be switched off. Active DVB-T antennas have to be
supplied by an external power supply.
