what is network jitter
Jitter is the deviation from true periodicity of a presumed periodic signal in electronics and telecommunications, often in relation to a reference clock source. Jitter may be observed in characteristics such as the frequency of successive pulses, the signal amplitude, or phase of periodic signals.Jitter is a significant, and usually undesired, factor in the design of almost all communications links (e.g., USB, PCI-e, SATA, OC-48).acket jitter is expressed as an average of the deviation from the network mean latency. However, for this use, the term is imprecise. The standards-based term is  packet delay variation  (PDV).