Timing jitter
Also: period jitter
Variation of actual event timing around its intended schedule.
Jitter changes sample intervals, latency, PWM edges, and numerical gains; measure timestamps rather than assuming configuration equals execution.
- Units
- seconds (s)
Example A nominal 10 ms loop alternating between 8 and 13 ms has timing jitter.
Common misconception Average frequency can be correct while individual deadlines are still missed.