<?xml version="1.0" encoding="UTF-8"?>
<tsduck>
  <_descriptors>

    <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="SymbolRate, required"
        FEC_inner="undefined|1/2|2/3|3/4|5/6|7/8|8/9|3/5|4/5|9/10|none, required"/>

  </_descriptors>
</tsduck>
