Selecting the channel strip
—> The display shows e.g. the menu “
Bx 4A QPSK-C
”:
“
Bx
” stands
for
cassette (box),
“
4
”
for slot 4
“
A
”
for channel strip “
A
”
”
QPSK-C
”
Type of cassette
”
S41
” Channel
set
• By pressing
, select channel strip “
A
” or “
B
”.
• Press the
button.
—> The “Selecting channel / frequency setting” –
“
OUTPUT
” menu is activated.
Selecting channel / frequency setting
In this menu, you can choose the channel or frequen cy setting
for the adjustment of the HF output. The channel setting cov-
ers 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 raster in the range of chan-
nels S21 … C69 (frequency raster 8 MHz). The CCIR chan-
nel raster is 7 MHz in the range of the lower frequency bands
(channels C2 … S20). Therefore the frequency setting is used
here. If one uses the existing channel raster of 7 MHz in these
channel ranges, this will result in interference (overlapping)
with the 8 MHz QAM signal packages, thus causing trans-
mission problems.
Bx 4A
V 1
QPSK-C
S41
A
/
B
