TELE-audiovision - The World’s Largest Digital TV Trade Magazine - page 90

TELE-audiovision International — The World‘s Largest Digital TV Trade Magazine
— 09-10/2013
SCR Multiswitch
Fig. 1. Connection diagram for an SCR with 1x8 output
Most easy way to add satellite
and terrestrial tv to an existing
small cable network
Some time ago in a test
report we introduced the
SPAUN SUS 5581/33 NF. We
headlined it as “A very Easy-
to-Install Satellite TV Signal
Distribution” (see TELE-satel-
lite 12-01/2012). At the time
it was the first of its kind: a
Single Cable Router (SCR)
Multiswitch. In the meantime
SPAUN expanded the concept
and introduced not only new-
er models but a whole family
of products around the single
cable concept. We picked two
of the new models for this
test report: SUS 5581/33
NF LEGACY and SUS 5581 F.
While each of them can be
used independently, nothing
prevents connecting them
together in order to build a
more extensive single cable
systems and checking how
far the single cable concept
can be brought.
Are you familiar with the
SCR single cable concept?
For our less experienced
readers let us make a short
introduction to SCR technolo-
gy first. A single cable router
usually takes signals from a
Quad or Quattro LNB – simi-
larly to a regular multiswitch.
However, unlike a multiswitch
you do not connect individu-
al receivers to the separate
outputs of an SCR. Instead,
& SUS 5581 F
Excellent and most easy way to add direct
satellite reception for up to 16 users
without additoinal cables
you connect not one but a
number of receivers in se-
ries – one after another - to
a coax cable hooked up to a
SCR output. Of course, you
need to use suitable sub-
scriber sockets, for example:
SPAUN UNiSocket 310, 314
und 318 in order to connect
the receivers and allow the
signal to pass through to the
next socket. See Figure 1.
In the example shown in
figure 1, the SCR outputs
eight modulated carriers at
strictly defined frequencies
– like generating 8 different
transponders. Each of the
eight receivers must be con-
figured to read just one such
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