In telecommunication, an isochronous signal is a signal in which the time interval separating any two significant instants is equal to the unit interval or a multiple of the unit interval.
Note 1: Variations in the time intervals are constrained within specified limits.
Note 2: "Isochronous" is a characteristic, while "synchronous" indicates a relationship.
This article incorporates public domain material from the General Services Administration document "Federal Standard 1037C" (in support of MIL-STD-188).