What is "bias distortion"

n. Distortion in an electronic circuit caused by the potential applied across elements to provide a zero signal.

In telecommunication, the term bias distortion has the following meanings:

1. Signal distortion resulting from a shift in the bias.
2. In digital signaling, distortion of the signal in which all the significant intervals have uniformly longer or shorter durations than their theoretical durations.

Bias distortion is expressed in percent of the system-specified unit interval.