- 20 -
HDTV 1200 C CI
o
utPut
Channel
/ o
utPut
frequenCy
In this menu, you can select the channel or frequen cy setting for the adjustment
of the RF output. The channel setting covers the range of channels S21 …
C69, the frequency setting covers the range from 42.0 MHz to 860.0 MHz.
—> The QAM signal is normally transmitted with a bandwidth of 8 MHz.
This means that you can only use the channel centre frequency of
the existing channel grid in the range of channels S21 … C69
(frequency grid 8 MHz). The CCIR channel grid is 7 MHz in the
range of the lower frequency bands (channels C2 … S20). There-
fore the frequency setting is used here. If one uses the existing chan-
nel grid of 7 MHz in these channel ranges, this will result in inter-
ference (overlapping) with the 8 MHz QAM signal packages, thus
causing transmission problems.
For programming in these channel ranges and in the frequency
ranges below them, we recommend starting with channel S21 /
306 MHz going back in steps of 8 MHz (see frequency table on
page 39), or reducing the bandwidth of the QAM output signal by
removing stations.
Bx 4
C68
OUTPUT
850.00 MHz
Setting the output frequency
• Use the
buttons to place the cursor under the digit to be set for the
frequency display then use
to set the output frequency wished.
—> The corresponding channel is displayed.
Setting the output channel
• Use the
buttons to place the cursor under the channel display then
use
to set the output channel wished.
—> The corresponding frequency is displayed.
• Press the
button.
—> The "Input parameters" – "
INPUT
" main menu is activated.
