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HDMA 784 C ASI
The QAM module is equipped with four channel strips ("
A
" … "
D
"). For each
channel strip tuner or ASI input can be selected. The channel strips consist of the
digital SAT tuners, the digital signal processing units and an output converter.
For channel strips A/B resp. C/D adjacent channel setting is fixed.
Using adequate CA modules scrambled channels can be descrambled via
channel strips "
A
" and
"C"
.
Status LEDs
Channel strip A
Channel strip B
Channel strip C
Channel strip D
Four LEDs indicate if the respective channel strip is
switched on (LED illuminates) or off, and also provide
an indication of the signal quality based on their
colour.
The integrated TPS module (Transport Stream
Processing) processes the data from the demodu-
lated transport streams.
Channel as well as frequency setting is possi-
ble for modulators "
A
" and "
C
". The modulators
"
B
" and "
D
" work at a spacing of + 8 MHz to
modulators"
A
" and "
C
". Herein only frequency setting (frequency spacing of
channel strips "A <–> B" and "C <–> D") is possible.
The QAM modulated HF output signals are sent through the HF output of the
QAM module to the output collector of the head-end station.
When the head-end station is switched on, the two-line LC display shows the
"
SETUP
" menu and the software version of the control unit. The head-end sta-
tion output level can be adjusted in this menu.
The control of the module takes place via the control unit of the head-end sta-
tion. To operate the QAM module the software version of the control unit (head-
end station) must be "
V 10
" or higher. The operating software of the QAM
module and the head-end station can be updated using a PC and the software
"
BE-Flash
" via the 9-pin D-SUB socket on the head-end station. You can find
the current operating software for the head-end station and the QAM module,
the software "
BE-Flash
" and the current assembly instructions on the website
"
www.gss.de/en
".
The QAM module is designed exclusively for use in the STC 160 head-end
station.
