GSS STC 1200, Инструкция по сборке

Страница: 8 / 36

- 8 - STC 1200
2.5 d
esCription
The head-end station has a modular structure and can hold up to Standard
cassettes. You can find a list of the current Standard cassettes at the website
"
www.mygss.eu ". This head-end station is designed exclusively for use with
cassettes of the Standard marketing programme. The various expansion op-
tions for the head-end station allow for the installation of a wide range of
broadband cable systems.
Each of the three integrated SAT IF input distributors has two SAT IF inputs.
You can use them to distribute two reception levels over 4 or 6 outputs. Using
the loop-through output enables you to distribute reception level 1 over the 10
outputs for each SAT IF input distributor. The F sockets of both reception levels
are coloured.
Basic signal pattern:
9-12 dB 9-14 dB
8 dB
Unused loop-through outputs must be terminated with the resistors supplied.
The power supply in the head-end station is designed to supply power to
components (e.g. LNBs) connected upstream. These are supplied via the SAT
IF input distributors’ input sockets with operating voltage (+18 V) at a total
current of max. 1 A.
In addition, the head-end station’s power supply unit can be used to supply
peripheral devices with voltage (+12 V / max. 1 A, with an external fuse).
The cassettes’ HF output signals are accumulated in a programmable HF out-
put collector and then directed to the HF output and to the test output via the
downstream hybrid amplifier.
When the head-end station is shipped from the factory, the default setting for
the HF output level of the output collector is -3 dB. You can use the software of
the control unit to program the master output level of the head-end station.
The software version of the control unit appears on the two-line LC display
after switching on the head-end station. If the inner temperature of the head-
end station exceeds the permissible temperature of 65 °C when operating, a
message appears in the display instead of the standby menu. This message
contains the maximum measured temperature and the number of the head-end