FTE Maximal HCA ZM 45-30 Manual De Usuario página 11

Inside the equipment there is a simplified sketch of the different stages of the amplifier and also it is given the access to
configure the different options that the amplifier offers.
Fixed Regulation
(A)
Amplification
stages
Equalization
Regulation
Filtering stages
The gain of HCA ZM 45-XX amplifier is 42dB for terrestrial band and 30dB for return path (active).
They also incorporate a margin of regulation of 20 dB and an equalization of 10 dB in the terrestrial band and they
incorporate a regulation margin of 20 dB in the return path.
In the terrestrial band exists also the possibility of configuring a fixed regulation of 6dB and a fixed equalization of 6dB by
the means of jumpers. The different positions of the jumpers for regulating and equalizing the terrestrial band are specified
in the following tables:
Regulation (A)
Jumpers position
Equalization (B)
Jumpers position
The configuration of the return path is made through jumpers, in one of them it is configured the power to return path
amplifier or no power to return path amplifier and in the other if the channel is active or passive. The two possible
power to return path amplifier – active channel
configurations are:
channel.
The following table specifies which the positions of the jumpers are in order to get a passive or active return path:
Return path Stage
Active
Passive
User's Guide · HCA ZM 45-30 / HCA ZM 45-65
-6dB
-6dB
Power to return path amplifier (C)
- 2 -
without power to return path amplifier – passive
and
Return path Configuration (D)
HCA ZM 45-30 / HCA ZM 45-65
Fixed
equalization (B)
Feeding of return
amplifier(C)
Return channel
regulation
Return channel
fixed
equalization (E)
Return channel
configuration (D)
0dB
0dB
Version_en_1.1 FTE maximal