Fracarro D-Matrix 4S Instructions D'emploi page 34

The inputs support DVB-S/DVB-S2 satellite signal reception, they are able to provide remote
power feed to an LNB and support the DiSEqC, release 1.0, control management.
The signal can be provided to each input independently, using the four upper connectors, or
the loop-through function can be used, which enables providing a signal received from one of
the subsequent inputs in cascade. In this case, the cascade inputs cannot have the reception
polarity/band specified, because the signal that can be used will be the same as the input used
as source for the loop.
The LNB remote power supply is able to supply a maximum current of 400 mA, total for all
the inputs. If this limit is exceeded, a current limiter triggers, which temporarily deactivates
the remote power feed on all the inputs, reactivating them one at a time, until the input (or
inputs) causing the problem is identified. The remote power feed and reception from these
inputs is finally deactivated, while the loop function remains active. The red led then lights up
corresponding to the overloaded input. Reception from the error inputs can be reset after solving
the system malfunction, deactivating and reactivating the input, or by restarting the D-Matrix.
The signal received from the sat inputs can be decrypted using a maximum of two CAM
modules, inserted in the slots on the right. Each slot can be associated to one (and only one)
of the inputs, independently: the signals received from the same input but with different codes
could also be decrypted, associating two CAMs to the same input.
The product enables reproducing a program saved on files with standard transport stream format
(.TS files). This file can be generated beginning with any audio/video file, by using a specific
conversion tool. The file must be in a USB storage unit connected to the device, formatted with
FAT32 file system.
Programs from satellites or file can be intelligently multiplexed, which means the user is able to
generate ad hoc output mux, depending on the available bitrate and the end user's preference.
The system automatically regenerates the transport stream, also using certain position/priority
parameters, so that certain programs are preferred over others that are considered less
important in bitrate terms.
For example, consider a mux generated from the P2, P2 and P3 programs received from a
satellite, configured with the respective positions 1, 2 and 3 (the lower position means the
higher priority). If the overall bitrate of the three programs is lower than the available amount
from the output modulation, all three programs are produced in output without any bitrate loss.
However, supposing the total bitrate exceeds the available amount in certain moments, the
system guarantees viewing of the higher priority programs, cutting the bitrates of the lower
priority ones. Therefore in this case, program P3 will be degraded (squaring), while the P1 and
P2 programs are not changed at all.
In certain situations, the installation requires that a transport stream received from a satellite is
not multiplexed but directly transmitted without any processing. For this the ALL-PID mode can
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