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HDE 400
o
utPut
symbol
r ate
, qam
modul ation
—> This menu is only displayed if "QAM modulation" is selected in
In this menu you can set the output symbole rate, the QAM modulation and invert
the user signal.
Bx 2
6900 QAM
QAM
256 POS
Output symbole rate:
In this menu item you can set the output symbole 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
.
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 the
buttons to place the cursor under "
QAM…
".
• Use
to set the QAM modulation ("
4
" … "
256
").
Inverting the user signal:
For exceptional cases and "older" digital cable receivers, the spectral position
of the user signal can be inverted "
NEG
". Factory default is "
POS
".
• Use
to place the cursor under "
POS
".
• Use
to set the spectral position to "
NEG
".
• Press the
button.
—> The "Substitute signal in the case of an incorrect input signal" –
"
FAILURE
Содержание HDE 400
Страница 1: ...Assembly Instruction HDE 400 ...