PD IEC/TR 61282-10:2013 PDF

1   Scope The purpose of this part of IEC 61282 is to define the error vector magnitude ( EVM ) as a metric for quantifying the quality of an optical vector-modulated (modulation of phase and possibly magnitude) signal from a transmitter or optical transmission link. The considerations required for reproducible measurement results are detailed. The relationships with other related parameters from constellation diagram analysis like error vector , phase error, magnitude error, I-Q offset and time-resolved EVM are described, as well as the relationship between EVM and Q -factor.