Qam Modulation - Triax TDcH 16S-I-Q User Manual

TDcH Compact Headend

5.7.1 QAM Modulation

QAM output frequency:
You can configure a QAM output frequency by using
the specifications of the channel plan or by entering a
frequency manually.
Using the channel plan definitions:
Open the drop-down list with the predefined channels
and select the channel you want to use.
Note:
The Channel is only needed for Output 1 – all others
are set automatically!
Enter a frequency manually:
Click into the frequency field and enter the frequency
directly. Enter the desired frequency in MHz in the
Frequency field.
Note:
The Channel is only needed for Output 1 all others are set automatically!
Open the detailed output configuration menu with the
extend button.
Constellation:
To select which QAM mode to use, open the dropdown
list and select the QAM mode you want to use.
Symbol rate:
Enter the desired symbol rate (from 3150 to 7200 kS) in
the Symbol rate field.
Level correction:
RF output level correction can be set in the first output channel for all output channels 0 and -16 dB.
Enable Output:
If you want to enable this channel, click the Enable Output checkbox.
Note:
If the output is disabled, then will no transport stream nor carrier exist at this output. The services selected for this
output will still be seen as configured in the system. The information about the services at this output will still exist
via EIT_other, SDT_other and NIT_other!
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