- 20 -
HDMA 784 C ASI
o
utput
symbol
r ate
, Qam
modul ation
In this menu you can set the output symbol rate, the QAM modulation and invert
the user signal.
Bx 4A
!
6900 QAM 256
QAM–MODE
POS
Output symbol rate:
In this menu item you can set the output symbol rate.
• Use the
buttons to place the cursor under the number to be changed
of e.g. "6900" and set the symbol rate with the buttons
.
—> A displayed "!" indicates an output data overflow (page 34).
Bx 4A
!
QAM–MODE
In this case increase the output symbol rate or the QAM modulation
or remove stations from the data stream using the station filter.
QAM-Modulation:
In this menu item you can set the QAM modulation.
—> For higher QAM modulation, the output symbol rate is lowered. An
output QAM modulation of > 64 QAM places a large burden on the
cable network. Due to noise, delay and frequency response prob-
lems, reception of the converted output signal can be affected.
• Use buttons
to select the cursor position for "
QAM…
" setting.
Bx 4A
!
6900 QAM 256
QAM–MODE
POS
• Use buttons
to set the QAM modulation ("
4
" … "
256
").