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5 Programming
The following examples show how the HDMT 474 MX Cassette is programmed;
the output channels can be set from S21 … S41. Set the other Cassettes listed
in the same way.
5.1 Preparation
Notes:
– Using the menu “
LEVEL CONTROL
” the Cassette generates an equally power-
ful HF carrier on the video carrier frequency of the channel. In this way, the
Cassette‘s level can also be set with an analogue TV test receiver set to the
video carrier frequency of the channel.
– In order to prevent interference within the head end and the cable system,
the output level of the digital Cassettes must be lowered by approx. 10 dB
at 64 QAM and by approx. 4 dB at 256 QAM compared to analogue Cas-
settes.
– If the
button is pressed for more than 2 seconds in all menus the
programme returns to the menu “Selecting the Cassette”.
