Frequency Plan; Standard Frequency Plan - Alcad 912-UC Serie Manuel D'installation Et Programmation

22 - ENG
3.

STANDARD FREQUENCY PLAN

The UC processors control the treatment of satellite signals by adjusting their
level and converting their frequency. Thus, it is possible to distribute to the
desired satellite transponders through a single coaxial cable.
The input frequency of the processor must be equal to the FI frequency of the
satellite transponders.
For output frequencies, it is recommended to use the standard frequencies
plan, which starts at 970 MHz and goes up to 2130 MHz, reserving 40
MHz for each transponder. This frequency plan is valid for a bandwidth of
less or equal than 36MHz, and enables the distribution of a maximum of 30
transponders.
MHz 970
36
4.

FREQUENCY PLAN

The output frequency of the processors is freely selected taking into account
that the FI distribution satellite band goes from 950 to 2150 MHz, and the
separation between transponders must be:
Installation and programming manual
1010
36
40 MHz 40 MHz
Fig. 5 - Standard frequency plan
BANDWIDTH
BW1
36 MHz
36 MHz
36 MHz
27 MHz
27 MHz
27 MHz
15 MHz
15 MHz
15 MHz
Tab. 1 - Transponder separation
1050 1090
27 15
40 MHz
SEPARATION
BW2
36 MHz
27 MHz
15 MHz
36 MHz
27 MHz
15 MHz
36 MHz
27 MHz
15 MHz
2130
36
40 MHz
36 MHz
30 MHz
36 MHz
30 MHz
26 MHz
30 MHz
26 MHz
20 MHz