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2.3 Description
The Cassettes convert two DVB-S-/DVB-S2-modulated data flows into two QAM-
modulated data flows. The Cassettes are controlled via the head end.
Each Cassette has two inputs and one HF output.
Each Cassette is equipped with two channel strips (A and B). The channel strips
consist of digital SAT tuners, the digital signal preparing units and the output
converter. The Cassettes´ channel strips are indicated by Box “…A” or Box “…B”
in the control unit display.
The integrated TP module (Transport Stream Processing) processes the data
from the demodulated transport stream. In this way, service information can be
modified (NIT – Network Information Table), data rates can be increased (Stuff-
ing) and individual programs can be deleted from the transport flow, while the
rest of the programs can be transmitted with optimised bandwidth. Furthermore,
the operator ID (required for visAvision, for example) can be set.
The operating software of the Cassette can be actualised via an external 9-pin
SUB-D-socket, using a PC or notebook (software “
BE-Flash
”). You can find the
current operating software of the Cassettes on the website “
The prepared input signals are transmitted to the HF output collector of the head
end via the HF output socket. The output level of the Cassettes can be set with the
level regulator (max. –20 dB) at the output collector of the head end.
After the head end has been switched on, the software version of the control
unit is displayed briefly in the two-line LC display and afterwards the type of
Cassette of the first slot. Approximately five minutes after the last button has
been pressed, the software version of the control unit is displayed.
The Cassettes are designed for use in the following head ends:
– STC
316
– STC
332
– STC
1200
– STR
19-8
