Fracarro Digiflex SIG9708CI Betriebsanleitung Seite 21

2.2 REPLACE/INSERTION OF SINGLE RECEIVERS
To install the single modules in the headend, you first should cut off the network power from the headend to
avoid contact with parts under tension. Open the front panel of the headend by using the key and insert the
receivers as per figure 6.
The modules that are inserted can operate in three different modes: stand-alone, master, slave.
The module that is used in stand-alone mode is a completely single digital satellite receiver that is also
independent from the others; therefore, it needs the SAT signal at its own coaxial input. Each receiver in
stand-alone mode can receive a free-to-air signal or a codified signal with the CAM (not supplied), if the CAM
allows it.
Moreover, the module can be set in Master or Slave modes. The Master modules can be connected to one
or more Slave modules with a flat cable (contained in the headend packaging) by permitting the reception of
several encrypted programs of the same transponder with the Master CAM (if the CAM foresees this opera-
tion. Not all on sale CAM versions support the simultaneous decoding of several channels). The selected
transponder is set by programming on the receiver that operates in the Master mode.
The SAT signal arrives at the Master module input by means of the coaxial cable. The Master module demod-
ulates and decrypts the signal of the selected transponder. The signal passes to the Slave module by way of
the flat cable, and the Slave module decrypts and modulates the other channels of the same transponder in
RF. Therefore, the Slave module does not need the SAT signal at its coaxial input.
Every Master or Slave module can decrypt and modulate a free-to air or codified program (if the CAM allows
it).
The selection of the Master, Slave or stand-alone mode is through the TPE universal programmer; see the
"SETTINGS" menu on page 31.
The default configuration foresees eight modules in the stand-alone mode that are programmed according to
the default programming on page 25.
For a proper operation in Master/Slave mode, we recommend placing the Master board in first position fol-
lowed by the slave boards. Moreover, cut the flat cable in order that no connectors are free.
ATTENTION: do not carry out any direct connection of two modules in the Master mode by means of
the flat cable since they can get damaged permanently.
Figure 13 shows an example of connection of the Master (M) and Slave (S) receivers by means of a flat cable.
In particular, the figure shows two Master receivers with the CAM on board; the two receivers control 2 and 4
Slave receivers respectively. The flat cable was cut after the third module so that the signal fluxes of the two
Master modules are separate.
3. USER'S INSTRUCTIONS
The headend layout foresees 8 digital receivers to receive free-to-air or encrypted channels, thanks to the
common interface.
Each receiver has a SAT input; it can generate 14/18V, a 22KHz tone and a DiSEqC 1.0 tone-burst to control
multiswitches, if any, or LNB (max 400mA@14V remote power feed).
The headend is foreseen by an input for mixing the existing TV signals and one RF output with the SAT signals
that are remodulated in VHF and/or UHF band with vestigial modulation (it is possible to set adjacent output
channels).
Figure 10 shows an example of a headend connection to the TV installation. If the TV mixing input is not used,
the CA75F load must be inserted at the end; the load is supplied in the accessories packaging. At the bottom
part of the headend, there is the screw for the connection to the ground electrode of the antenna installation
according to the EN50083-1 regulation, art. 10 (see Fig.1).
Each receiver is equipped with RF regulation of the video (15 dB) and audio signal regular by programming
(see page 30).
It is possible to connect up to 6 headends in one installation (for a maximum of 48 channels) by mixing the
signals and using the TV inputs. See Fig. 12 for an example diagram.
In the event of a short circuit on the SAT inputs, the feeder protects itself to safeguard the headend status.
After the anomalous operation cause is solved, the headend switches on again automatically. If not, unplug
the power to the network and then plug back In.
The headend manages the teletext and subtitles transmitted by the received programs; it is possible to
choose the language (only if available) from the subheadings. Moreover, the receivers can be used to remodu-
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