17
3. Operation
3.1 Programming
First of all it is necessary to check where
a free place for the required transponder
within the satellite range is available before
programming. If the newly programmed
transponder overlaps other channels, the
OKB 1000 will show a collision message
COLL
. In this case the programming of the
channel block will have to be repeated.
NOTE
The collision message
COLL
only
appears, if the transponders which
are overlapped have also been
programmed by the OKB 1000.
For the required distance between
an available and the new channel
see the accompanying table.
With the OKB 1000 it can be selected
between two operating modes.
Auto
Considering channel spacing, the
channels are placed automatically in
succession from a start frequency.
Using a SAT-IF-filter (i.e. OKF 1000) the
automode is not recommendable.
Hand
The output frequencies can
be chosen freely.
NOTE
The calculation of the satellite frequency
from the transponder frequency is carried
out in the accompanying example:
NOTE
The calculation of the satellite frequency
(for programming the receiver) from
the SAT-IF frequency is carried
out in the following example:
Distance between
two adjacent
channels
2. channel
analogue
digital
1.
channel
analogue
34 MHz
36 MHz
digital
36 MHz
38 MHz
12 480 MHz – 10 600 MHz = 1880 MHz
(Transponder –
LO-LNB
= Sat.-IF)
1744 MHz + 10 600 MHz = 12 344 MHz
(Sat.-IF + LO-LNB = Sat.-frequenzy)
