Operating the Equipment Locally
Instruction Manual: evolution 5000 E5710 and E5720 Encoder
Page 4-75
ST.TM.E10074.1
Modulation Type
Modulation Type :
+
QPSK
—
Enter
l
Update using softkeys
Quit
l
Table 4.67: Modulation Type Options
Selected Option
Description
QPSK
Terrestrial transmitter uses QPSK modulation.
16-QAM
Terrestrial transmitter uses 16QAM modulation.
64-QAM
Terrestrial transmitter uses 64QAM modulation.
Hierarchy Option
To access the Hierarchy option, press the Hierarchy softkey in the
Delivery Descriptor
Menu
. This screen enables the hierarchy of the
terrestrial transmission to be specified.
Hierarchy
Hierarchy :
+
Non-Hierarchical
—
Enter
l
Update using softkeys
Quit
l
Table 4.68: Hierarchy Options
Selected Option
Description
Non-Hierarchical
Terrestrial transmission is not hierarchical.
Alpha=1
Terrestrial transmission is hierarchical, and the
a
value = 1.
Alpha=2
Terrestrial transmission is hierarchical, and the
a
value = 2.
Alpha=4
Terrestrial transmission is hierarchical, and the
a
value = 4.
FEC (HP) and FEC (LP) Options
To access the FEC (HP) or the FEC (LP) option, press the FEC (HP) or
FEC (LP) softkey in the
Delivery Descriptor Menu
. These screens
enable the inner FEC schemes used by the terrestrial transmitter to be
specified.
NOTE…
If the
Hierarchy
option is set to
Non-Hierarchical
, then only the
FEC Rate
parameter is used and
shown on the display.
If the Hierarchy option is set to Alpha=n, then the FEC (HP) and
FEC (LP) parameters provide two levels of modulation. Transmission
starts with the code rate for the HP level of modulation and ends with the
code rate for the LP level.
