Seite 53 - TELE-satellite-1203

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53 —
02-03/2012 —
TELE-satellite International — The World‘s Largest Digital TV Trade Magazine
non ideal optic-to-RF con-
version - not because of op-
tic splitters imperfections.
We also measured the
noise performance and we
are happy to inform you that
in line with theory, optic fib-
er cable and optic splitters
practically do not add any
noise. No matter what out-
put we tested: 90% or 10%
MER or C/N readings were at
maximum (MER was above
14 dB). This means that your
receiver connected to such
network would also show
very high quality readings
(close to 100%).
Using a proper combina-
tion of Huber+Suhner CLIK!
Splitter Boxes, you can eas-
ily build a distribution net-
work with even 36 optic
outputs provided that your
optic LNB generates about
7 dBm of output power what
is a quite typical value. Such
configuration consists of one
1x4 splitter which splits the
LNB output to four optic fiber
cables. On every fiber optic
cable, eight 1x2 splitters are
installed: four 10/90, two
20/80, one 30/70 and one
50/50. In such configura-
tion, you get the output lev-
els from -10.7 dBm through
-13.2 dBm. This is quite a
sufficient level for an optic-
to-RF converter. Now, if your
optic-to-RF converters are of
quad types, you will be able
to connect not 36 but 144
regular satellite receivers!