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TELE-satellite International — The World‘s Largest Digital TV Trade Magazine
— 12-01/2012
SPAUN SUS 5581/33 NF
Great solution for saving additional cables
in smaller community systems
A very Easy-to-Install Satellite
TV Signal Distribution
SPAUN SUS 5581/33 NF
Satellite TV is so easily
accessible today that more
and more often you have
not just one receiver in the
living room but two or more
of them located in different
rooms of your apartment or
house. Today’s higher class
PVR receivers have usually
two satellite tuners and to
take full advantage of this
feature, you should connect
two independent coax cables
to them. How many of us
were so clever 10 years ago
or earlier to foresee the need
for that many cables?
To solve this kind of prob-
lems as well as to keep the
cabling as simple as pos-
sible, a solution called SCR
can be used. SCR stands
for Satellite-Channel-Router
and this is a European indus-
try standard for distributing
satellite signals over a sin-
gle coaxial cable - CENELEC
SPAUN use their own
trademark UNiSEqC to mark
their products dedicated
for this solution. We asked
SPAUN to send us samples
of their UNiSEqC products
so that we could test them
and inform our readers what
they should expect when ap-
plying them.
As usually, SPAUN had
been very responsive and
we received their products
very soon. It was the SUS
5581/33 NF cascadable SCR
Multiswitch and a number
of wall sockets dedicated
for the system. The sock-
ets were of three different
types: UNiSocket 310, 314
and 318.
Let us first describe the
heart of the system – SCR
multiswitch. SUS 5581/33
NF accepts either LNB Quat-
tro or LNB Quad signals plus
a signal from a terrestrial
antenna. You can configure
the multiswitch to generate
a SCR signal either on one
output or on three outputs.
If you choose one output,
you use only one coaxial ca-
ble on which you can hook up
as many as eight UNiSock-
ets. The system with three
outputs lets you connect up
to three sockets on each of
the three coax cables. So,
in the first configuration you
can connect 8 independent
receivers and in the second
configuration – 9 receivers.
You must though keep in
mind that all receivers used
in this system must be com-
patible with SCR technology.
If SCR is not clearly stated
in the receiver specification,
check if EN 50494 stand-
ard is mentioned or a term
“unicable” (another trade-
mark for a SCR solution).
If you can put your hands
on the receiver in question,
Satellite Distribution System