- 24 -
HDE 400
—> If, despite activated RF output, the encoded input signal is not out-
put, the bypass function of the ASI input my be active (page 42).
• Press the
button.
—>
The "Ethernet parameter" – "
ETHERNET
" main menu is activated
k
ind
of
modul ation
• Use the
buttons to select "COFDM" or "QAM".
Bx 2
COFDM
RF
C69 =>
Bx 2
QAM
RF
C69 =>
• Press button .
—> The "RF output level" – "
LEVEL
" submenu is activated.
rf
outPut
level
Herein you can match the output level to the output levels of the other cassettes.
Bx 2
LEVEL
- 6 dB
In order to prevent interference within the head-end station and the cable
system, the output level of the cassette must be decreased by 10 dB at QAM
modulation 64QAM, by 4 dB at QAM modulation 256QAM and by 8 dB at
COFDM modulation compared to the system level.
• Measure the output levels of the other cassettes and tune them to a uniform
output level using the appropriate level controls or software dependent on
the head-end station used. Please regard the assembly instructions of the
respective head-end station.
• Use the
buttons to adjust the desired level.
• Press the
button.
Содержание HDE 400
Страница 1: ...Assembly Instruction HDE 400 ...