==== cable_delivery_system_descriptor

Defined by DVB in <<ETSI-300-468>>.

[source,xml]
----
<cable_delivery_system_descriptor
    frequency="FrequencyHz, required"
    FEC_outer="undefined|none|RS, default=RS"
    modulation="auto|16-QAM|32-QAM|64-QAM|128-QAM|256-QAM, default=16-QAM"
    symbol_rate="SymbolsPerSecond, required"
    FEC_inner="undefined|1/2|2/3|3/4|5/6|7/8|8/9|3/5|4/5|9/10|none, required"/>
----
