DEGREE OF START STOP DISTORTION

1. In asynchronous data transmission , the ratio of (a) the absolute value of the maximum measured difference between the actual and theoretical intervals separating any significant instant of modulation (or demodulation ) from the significant instant of the start element immediately preceding it to (b) the unit interval . 2. The highest absolute value of individual distortion affecting the significant instants of a start-stop modulation . Note: The degree of distortion of a start-stop modulation (or demodulation) is usually expressed as a percentage. Distinction can be made between the degree of late (positive) distortion and the degree of early (negative) distortion.