[C2_delivery_system_descriptor.C2TuningType]
Bits = 2
0 = Data Slice tuning frequency
1 = C2 system centre frequency
2 = Initial tuning position for a dependent static data slice

[C2_delivery_system_descriptor.C2SymbolDuration]
Bits = 3
0 = 448 μs (4k FFT mode for 8MHz CATV systems)
1 = 597,33 μs (4k FFT mode for 6MHz CATV systems)

