IRD-2900 Series Professional Integrated Receiver ... - TBC Integration

The available options are:
User Manual
Operation and Management
• AUTOMATIC – the IRD-2900 automatically detects and sets the Spectral
Inversion Mode
• INVERTED – sets the IRD-2900 receiver to “inverted” Spectral Inversion
Mode.
• NORMAL - sets the IRD-2900 receiver to normal Spectral Inversion Mode.
PL SCRAMBLING SEED
The Physical Layer Scrambling feature allows descrambling of the entire physical
layer frame except its header part. The physical level scrambling is done
according to a seed sequence that the user enters.
The use of different PL Scrambling sequences allows a reduction of interference
correlation between different services. For the same purpose, it is possible to
reuse a shifted version of the same sequence in different satellite beams.
Furthermore the seed can be associated to a satellite operator or transponder,
thus permitting identification of an interfering signal via the PL Scrambling seed
detection. The PL Scrambling Seed screen allows setting the physical
scrambling. The following figure illustrates the PL Scrambling Seed screen.
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