Firmware Update - Fracarro D-Matrix 4S Instructions D'emploi

Fig. 17
The length of the complete graphic bar (including the colours blue, grey and white) shows the
overall available band for the output mux, while the band immediately used by the programs is
blue.
As the overall program band could change with time, the maximum acquired value since the last
reset (done by pressing RESET PEAK) is shown in grey.
If there is a white section, it shows the amount of remaining band and therefore the margin that
can still be used. If at any time a band peak reaches and exceeds the maximum, there is no
white section and the red overflow led comes on.
The same values numerically are available in the panel menu in the section OUTPUT -> MUX1
/ MUX2 -> BITRATE.
Therefore the installer should configure the output program list, after carefully informing himself
about the maximum band required by each program (using web sources or specific magazines),
and monitor the band over a sufficient period of time to ensure that the overall peak never
reaches the maximum available, but that there is always a minimum margin available to offset
any problems that may occur.
Always carefully evaluate how to assign the priority positions to each program, to ensure that
the most important programs are always guaranteed.
IMPORTANT: to maximise the available band, in standard installations it is advisable to maintain
the default modulation settings (for DVB-T constellation 64QAM, FEC 7/8, guard interval 1/32,
number of carriers 8K, for DVB-C constellation 256QAM, symbol rate 6900kbps).
IMPORTANT: to keep the system immune from bitrate overflow, the bitrates must be kept
sufficiently lower than the maximum limit defined when setting the modulations. Remember that
high definition programs, broadcast with dynamic bitrates, can have broadcast peaks up to 20
Mbit/s. Therefore the installer must carefully monitor the bitrate peaks during the programming,
and find information beforehand about the broadcast modes for the channels being distributed.

7. FIRMWARE UPDATE

The D-Matrix can be updated in the field by downloading the firmware saved on a USB drive,
directly on the module through its USB port (see the programming flowchart).
IMPORTANT: do not remove the USB drive while the update is in progress, because it would
block the card.
To obtain the latest firmware and update instructions, refer to the section "software update" in
our website www.fracarro.com
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