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PTIS 1000
2.4 Description
The cassette is a
DVB-T / SPTS
converter which combines COFDM-modulated
services (programmes) and transport streams supplied via the ASI interface
into one transport stream in the TPS module. This is emitted via the LAN inter-
face and can contain up to 16 services. For operating the cassette in a LAN
network it can be assigned its own IP address. The cassette is equipped with
two tuners. The accompanying channel strips consist of the digital tuners and
the digital signal processing levels. The resulting transport streams from the
"
Tuner A
"/"
Tuner B
" channel strips and from the transport streams supplied
via the ASI socket (ASI – Asynchronous Serial Interface according to DIN EN
50083-9) can take up to 16 services and are each assigned an IP address.
The signal supplied into the ASI input is provided again via the ASI output.
Principle signal path:
TPS
"Tuner
A
"
"Tuner
B
"
CA-Modul
CA module
ASI input
ASI output
IP address: Port:
Service 1 212.40.50.90 : 1234
Service 2 212.40.50.91 : 1234
Service 3 212.40.50.92 : 1234
Service 4 212.40.50.93 : 1234
Service 5 212.40.50.94 : 1234
Service 6 212.40.50.95 : 1234
Service 7 212.40.50.96 : 1234
Service 8 212.40.50.97 : 1234
Service 9 212.40.50.98 : 1234
Service 16 212.40.50.105 : 1234
In the head-end station display, the channel strips of the cassette are indicated
with "
Bx …A
" ("
Tuner A
") or "
Bx …B
" ("
Tuner B
"). The channel strip "
Tuner A
"
can decode encoded services via a corresponding CA module and a dedicat-
ed smart card. The cassette is programmed using the head-end station control
unit.
Two LEDs in the channel strips provide an indication with their colour whether
an HF signal is present or not. In a menu, the transmission of DVB service in
-
formation (EIT, TDT and SDT) or teletext (TXT) can be individually activated or
deactivated.
EIT (Event Information Table):
For each service, event information is transmitted (such as starting time, dura
-
tion, scrambling etc.)