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To access this menu from the above menu, press the (Down) key.
Use the (Up) and (Down) keys to toggle between the available modulation
types (dependent on model and option licenses).
3.10.4.7.6
Roll-off
This enables the selection of a roll-off rate from a drop-down menu (in %). Available
options are 20%, 25%, 35%. Tighter roll-offs (20%, 25%) are only defined for DVB-
S2 modulation. These tighter roll-offs allow a higher symbol rate to be used within a
given allocated bandwidth. The DVB-S2X card provides the options: AUTO, 5%,
10%, 15%, 20%, 25% and 35%.
To access this menu from the above menu, press the (Down) key.
Use the (Up) and (Down) keys to select the required percentage.
3.10.4.7.7
Spectrum Sense
Allows the satellite card to determine if the incoming satellite signal has been
frequency inverted due to the relative frequencies of the local oscillator and
modulated frequency (high side or low side local oscillator) either at the up-link or at
the down-link.
To access this menu from the above menu, press the (Down) key.
EN/LZT 790 0005 R7A
DVB-DSNG (EN301-210) 8PSK/16QAM modulation standard is not
supported by older generation satellite cards but is supported by the DVB-
S2X card.
The 1st Generation satellite input card and the DVB-S2X card has to be
explicitly set DVB-S or DVB-S2 mode whereas the 2nd Generation satellite
input card and Combined Satellite/IP card only presents an automatic
detection option.
The DVB-S2X Input card can take up to 25 seconds to switch between
DVB-S and DVB-S2/S2X modes. This is because a different code image is
loaded in to the card for each mode
SOURCE 1
3.2.2.4
SOURCE 1
3.2.2.5
SOURCE 1
3.2.2.6
|MODULATION
|DVB-S QPSK AUTO FEC
|ROLLOFF
|20%
|SPECTRUM SENSE
|AUTO
Using the Equipment
(UNLOCKED)
(UNLOCKED)
(UNLOCKED)
3-71
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