DekTec DTC-300 StreamXpress - Manual (Page 45)

DTC-300-SP – StreamXpress
USER MANUAL
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#4 Data Cells:
Depending on the modulation parameters, the StreamXpress will calculate the number of data cells
(useful cells) into each T2 frame.
#5 NUM_DATA_SYMBOL:
This 12-bit field indicates the number of data OFDM symbols per T2-frame, excluding P1 and P2
preamble symbols. The StreamXpress will display the valid range for the Num_Data_Symbol per the
modulation parameters. It also displays the current value used.
#6 PLP#0 NUM_BLOCKS:
This 10-bit field indicates the number of FEC blocks for PLP#0 contained in the Interleaving Frame
which is mapped to the next T2-frame. The StreamXpress will display the valid range for the
NUM_BLOCKS per the modulation parameters. It also displays the current value used.
#7 Optimum 1:
This field display the best settings for the Num_Data_Symbols and Num_Blocks per the modulation
settings. When un-ticked, the user can change the current setting using the up and down arrow.
#8 Optimum 2:
This field display the user defined optimum settings for the Num_Data_Symbols and Num_Blocks
per the modulation settings. When ticked, the user setting will become the value used.
#9 Number of Dummy cells:
If the data PLP and auxiliary streams do not exactly fill the cells allocated to data, dummy cells are
inserted in the remaining cells of the T2-frame. This field display the number of dummy cells inserted
per T2 frame per the modulation settings.
#10 Bitrate:
The StreamXpress will calculate and display, based on the modulation parameters, the actual TS
bandwidth that can be used in the modulated signal.
3.5.10.4 FEF (Future Expansion Frame)
This section is for Future Expansion Frame of the DVB-T2 of the standard. Future Extension Frame
(FEF) insertion enables carriage of frames defined in a future extension of the DVB-T2 standard in
the same multiplex as regular T2-frames. The use of future extension frames is optional.