Frequency Plan - Alcad 912-uc Serie Manual De Instrucciones

22 - ENG
37- Input F connector for units on the terrestrial TV band (-2 dB)
38- Signal output F connector
39- Mass connection
40- Supply cable (50 mm)
41- List of technical characteristics
3.

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 950 MHz and goes up to 2110 MHz, reserving 40
MHz for each transponder. This frequency plan is valid for transponders
with a 27 or 36 MHz bandwidth, and enables the distribution of a
maximum of 30 transponders.
MHz 950
36
40 MHz
The output frequency of
the processors is freely
selected taking
account that
distribution satellite band
goes from 950 to 2150
MHz, and the separation
between transponders
must be:
Installation and programming manual
990 1030
36
27
40 MHz
Fig. 5 - Standard frequency plan
into
the FI
1070
36
40 MHz
BANDWIDTH
BW1 BW2
36 MHz 36 MHz
36 MHz 27 MHz
27 MHz 36 MHz
27 MHz 27 MHz
Tab. 1 - Transponder separation
2110
36
SEPARATION
40 MHz
36 MHz
36 MHz
30 MHz