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Description of the
booster
Terminal designations
RF IN
= RF input signal looped through the modules.
RF IN
= RF input signal looped through the modules.
RF OUT
= RF output: sum signal of the two inputs
"RF IN" for injection into the house distribution
system or for connection to the internal
amplifier via "AMP IN"
AMP IN
= Input to the amplifier for the sum signal
LNC
= 13,5 VDC supply voltage for LNCs via
distributor DM 16
AMP OUT
= Amplifier output for the sum signal;
for connection to the house distribution system
Test –20 dB = Test output
The amplifier has two identical inputs for the left and right
module rows of the basic unit OV 50A. The sum signal of the
two inputs is looped out before the actual amplifier in order to
permit additional signal processing or the combination of signals.
The amplifier is a push-pull amplifier in GaAs technology in order
to obtain optimal power loss figures at the maximum RF output
voltage.
In order to maintain the C/N values, the level adjuster (10 dB) is
placed between the stages. It can be operated from the front
panel of the power supply unit.
The gain (27 dB) was selected so that all intermodulation
products are >60 dB away from the signal level (110 dBµV)
when the unit is fully equipped.
The output signal is also available at a test output (-20 dB).
The LNC voltage of 13,5 V / 1 A is connected via two F-sockets
to the DM distributor of the basic unit.
LEDs on the front panel of the power supply unit, above the
booster, indicate the presence of the supply voltages 5 VDC /
12 VDC / 13,5 VDC.
All RF connections use F plugs and sockets.
(GB)
POWER
230VAC
RF
IN
RF
IN
RF
OUT
AMP
IN
LNC
RS
485
LNC
AMP
OUT
RS
Test
485
- 20 dB
- 5 -
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