Promax HD Ranger + Manuel d'utilisateur télécharger pdf (Page 131)

March 2015 27

2222222222222222222

A3.5

In the collective facilities

The most frequent satellite signal distribution system in the small collective

facilities is the “BIS-switched”. This technology implies to use the “Quattro” type

LNBs (not to confuse with the “QUAD” type) and also supports specific

multiswitches for this type of facilities.

A Quattro-LNBis a LNB with 4 outputs that provides in a separated way the four

frequency bands (vertical low, vertical high, horizontal low and horizontal high).

These four signal scan then be distributed in the building through multiswitches.

Figure A3. 4.

The signal is distributed in the network by means of multi-outlet

multiswitches. The number of inputs and outputs is variable. The number of

inputs depends on the number of satellites (LNB).Usually a multiswitch includes

also an input for the TV terrestrial signal. The number of outputs depends on the

number of terminals (receivers) that can be connected to the multiswitch. In

addition, multiswitch in cascade incorporate pass connectors to be able to

distribute the signal and thus to connect several multiswitch in cascade mode

and therefore to give access to more users.

Figure A3. 5.

1 2 ... 126 127 128 129 130 131 132 133 134 135 136 ... 159 160

Pas de commentaire

Promax HD Ranger + Manuel d'utilisateur Page 131