Setting The Qam Modulation Value - Triax CCS 483 Assembly Instruction Manual

Head-end digital modulator
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.
Bx 1A
QAM-MODE:
64-QAM
—> The station filter remains deactivated ("off") if no sta-
tion was removed.
• Test the status of the individual stations:
If the filter is switched on, press the
you can use
and activate switched off stations or switch off further sta-
tions by pressing the
Note:
-
If no station is found, the error message
"no Service" appears.
Check the configuration of the antenna system including
the head-end station and the previous settings of the
Cassette.
• Press the
—> The menu "Setting the QAM modulation value" –
"QAM-MODE" is activated.

Setting the QAM modulation value

/
+
• Set the QAM mode with
—> A higher QAM mode restricts the output symbol
rate (permissible value
< 7,000 kilosymbols per second).
An output QAM mode of > 64 QAM places a large
burden on the cable network. Due to noise, delay
and frequency response problems, a reception of
the converted output signal can be impeded.
• Press the
—> The menu "Setting the stuffing" – "STUFFING"
is activated.
- 27 -
- 27 -
/
to select stations in the program table
buttons.
button.
.
button.
button. In this mode

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Ccs 484Ccs 485325148325149325150

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