IEC 60728-3-1:2012

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms, definitions, symbols and
  abbreviations
4 Methods of measurement of non-linearity
  for full digital channel load
5 Equipment characteristics required to
  be published
Annex A (informative) - Examples of measurement
        channels
Annex B (normative) - Null packet and PRBS definitions
Bibliography

IEC 60728-3-1:2012 is applicable to the methods of non-linearity measurement for cable networks which carry only digitally modulated television signals, sound signals and signals for interactive services. These methods take into account the specific signal form and behaviour of digitally modulated signals which differ from the analogue broadcast signals represented mainly by the existence of discrete carrier signals.