Not synchronized, not occurring at predetermined or regular intervals.
- The transmission of data between a transmitting and a receiving device that occurs as a series of zeros and ones. For the data to be "read" correctly, the receiving device must begin reading at the proper point in the series. In asynchronous communication, this coordination is accomplished by having each character surrounded by one or more start and stop bits which designate the beginning and ending points of the information.
Noise and Vibration
- Vibration components that are not related to rotating speed.
- Frequencies in a vibration spectrum that exceed shaft turning speed, but are not integer or harmonic multiples of shaft turning speed. Also commonly refered to as non-synchronous.
See also: Synchronous.