2020-10-09 | Technical improvements, changes in design, printing- and other errors expected. 11
4. EoC applications
EOC 1-32 and EOC 2-32 communicate with each other in the return path range of 5...204 MHz. All components
in the distribution structure must therefore be suitable for the return path. This applies in particular to the
antenna wall outlets, the passive distribution material and to SAT multiswitches.
4.1. Internet from cable network operator
If you use Internet access from a cable network operator, you will need a DOCSIS-enabled cable modem or
router.
Depending on the cable network operator, the forward path frequency range (downstream) amounts from
258 MHz to 862, 1006, 1218 or 1800 MHz. All components in the distribution structure must allow the
occupied frequencies to pass. For this reason, a prior test of the antenna system should be carried out.
No signals (radio/DAB etc.) may be transmitted up to 258 MHz. Otherwise, frequency overlaps and interference
will occur.
4.1.1. The principle
TV and radio from the cable network operator are forwarded via the TV output of the BSD x and via the EOC x-
32 to the distribution network.
The IP data from the cable network operator is received at the modem port of the BSD x using a DOCSIS router
and forwarded via Ethernet to an EOC x-32. The EOC modulates the IP data and feeds it into the distribution
network via the G.hn output using its internal diplexer. The data can be received at the other EoC devices.
Important: The use of a BSD x antenna socket and a TZU 19-68 return path blocker is mandatory in
order to achieve sufficient blocking depth for the frequency range from 5...204 MHz. Otherwise it
may cause interferences in the cable network.
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