Fracarro FRPRO 10 Instrucciones De Funcionamiento página 31

2.3 DESCRIPTION OF THE AMPLIFICATION STAGES
The Profiler unit is comprised of 3 amplification stages. input dynamics, cluster amplification and final gain.
These 3 gains are included in the automatic phase of the self-alignment and they can be programmed ma-
nually by the user. The self-alignment function allows for the maintenance of the noise figure to be as low as
possible and it aligns the clusters for the maximum output level.
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* SAT input and TV+SAT output only on the FRPRO 10S model
The first stage of amplification of the UHF inputs is named "DYNAMICS IN" and it can be changed from 0 to
20 dB; the amplification works on the whole 470÷862MHz band of the UHF input that is being programmed.
This is to be used to get the best noise figure for the UHF input as regards the input signal levels.
The second amplification stage concerns the single cluster that is being programmed, or "CELL GAIN and this
is adjustable from 0 to 20 dB. For example, if you are programming cluster number 5 with a start on channel
E48 and an end on channel E52, and you set the cell gain 5 at 15dB, there will be an increase in the signal level
of 15dB only on from channels E48 to E52. This is to be used to equalize the clusters' output level.
For the B.III+DAB, FM and AUX inputs, there is an adjustable band amplifier (one on each input) with a gain
that can be adjusted from 0 to 20 dB.
In the FRPRO10S model, the SAT input is equipped with a satellite amplifier that can be adjusted from 0 to
20 dB with an additional adjustment of the tilt (0÷20 dB).
The last amplification stage is the "FINAL GAIN," which can be adjusted from 0 to 20dB. It works on all the
headend unit inputs either on the UHF inputs and B.III+DAB, FM and AUX inputs (in the FRPRO 10S, the final
gain cannot be applied to the satellite input).
2.4 REMOTE POWER SUPPLY
els.
The headend unit can be used to remotely power supply the mast pre-amplifiers, if any, or other remote ac-
cessories. By programming, it is possible to select the remote power supply voltage either at 12V or 24V with
a maximum current for the UHF inputs of 200mA@12V or 100mA@24V (to be intended as the total addition
of the UHF1, UHF2 and UHF3 inputs).
For the version with the SAT input (FRPRO10S), it is possible to program the remote power supply of LNBs
pro-
14/18V 0/22KHz (max 250mA @ 14V). All remote power supplies are protected from short-circuits to safe-
guard the internal feeder.
UHF1 UHF2
DYNAMIC IN DYNAMIC IN
DINAMICA IN DYNAMIC IN DINAMICA IN DINAMICA IN
UHF1 UHF2 UHF3
UHF1 UHF2 UHF3
(0-20dB) (0÷20dB) (0÷20dB) (0-20dB) (0-20dB) (0÷20dB)
MATRICE A CLUSTER CLUSTER MATRIX
CELL GAIN (0-20dB)
GUADAGNO CELLA (0÷20dB)
Fig. 2.2 - Description of the amplification stages
UHF3 BIII+DAB
BIII+DAB
GUADAGNO
GUADAGNO
GAIN
BIII+DAB GAIN
(0-20dB) (0-20dB)
(0÷20dB)
(0÷20dB)
+
GUADAGNO FINAL
FINALE GAIN
(0÷20dB)
(0-20dB)
TV
OUT
31
FM AUX SAT*
SAT
GUADAGNO
GAIN
SAT
(0-20dB)
(0÷20dB)
FM AUX
GUADAGNO
GAIN
AUX
FM
(0-20dB)
(0÷20dB)
TILT SAT TILT SAT
(0÷20dB)
(0-20dB)
TV+SAT*
OUT