DekTec DTC-300 StreamXpress User Manual
Page 55
DTC-300-SP – StreamXpress
USER MANUAL
55
#5 Partial reception:
This transmission mode is used for Narrow band receptors. By limiting the range of frequency
interleaving within a segment itself, it is possible to separate a segment independently from the
remaining segments in the transmitted signal. In such a way, partial reception of services contained
in a transmission channel can be obtained using a narrow-band receiver that has a bandwidth of
one OFDM segment. It should be noted that partial reception uses a dedicated segment, which is
positioned to be the central one among OFDM segments. If partial reception is used, layer A should
have 1 segment.
#6 Emergency broadcast:
When set this tick box will enable the alarm broadcasting flag (1 bit) in the TMCC data.
3.5.12.3 Layers parameters
This section allows the selection of modulation and segment allocation for each layer.
Variable
Type
Description
Details Diag
# Segment
Drop
down
Select the number of segment for each Layer (A,B and C)
#1
1
Modulation
Drop
down
Select the modulation mode for each Layer (A,B and C)
#2
2
Code rate
Drop
down
Select the code rate for each Layer (A,B and C)
#3
3
Time Intlv
Drop
down
Select the time interleaver for each Layer (A,B and C)
#4
4
Rate (bps)
Display Displays the total available bitrate for each Layer (A,B and C)
#5
5
Selected (Bps) Display Displays the total selected component bitrate for each Layer (A,B
and C)
#6
6
Total
Display Display the total number of segments: (A+B+C)
#7
7