Jitter is a variation in a waveform’s timing. The timing variation of the period, duty cycle, frequency, etc. can be measured and compared to an average of multiple periods, or can be measured as a variation from one period to the next. A jitter measurement result will typically consist of a count of the number of periods evaluated over the selected time interval, a measurement of the highest v...

This paper describes a Built-In-Self-Test (BIST) circuit that tests the relative timing jitter of NRZ data and recovered clock of PLL-based CDR. Using the jitter information, the bit error rate and peak to peak jitter can be estimated. This BIST circuit doesn’t need a high resolution and high accuracy delay line to achieve high accuracy measurement. It depends on calibration and curve fitting a...

Describe and evaluate the concepts of near fiber electromyography (NFEMG), features used, including motor unit potential (NFMUP) duration dispersion, which relate to distal axonal branch muscle conduction time NFMUP segment jitter, a new measure temporal variability neuromuscular junction transmission (NMJ), fibre for fibres (i.e. NF jitter), methods obtaining their values. Trains high-pass fil...

We propose a dynamic programming solution to image dejittering problems with bounded displacements and obtain efficient algorithms for the removal of line jitter, line pixel jitter, and pixel jitter.

Patients with myasthenia gravis have been investigated with single fibre electromyography. In all myasthenic muscles recordings were obtained where there was an increase of the jitter and occasional blocking of different degree of single fibre action potentials. The jitter is the variability at consecutive discharges in the time interval between action potentials from two muscle fibres from the...

Jitter is a fundamental metric of voice quality. The majority of jitter estimators produce an average value over a duration of several pitch periods. This paper proposes a method for short-time jitter measurement, based on a mathematical model which describes the coupling of two periodic phenomena. The movement of one of the two periodic phenomena with respect to the other is what is considered...

Relative timing jitter between synchronized Q-switched lasers, or lack thereof, is important for stable sum-frequency generation. Experimental investigation of two passively synchronized lasers shows that the jitter is minimized when the free-running repetition rates of the two lasers are close to, but not exactly, matching. When the free-running repetition rates are matched, the jitter is sign...

The use of the Allan variance for the characterization of the jitter timebase error in waveform digitizers is proposed. With this aim, the Allan variance is shown to be a sound basis for defining and measuring a suitable figure of merit, diagnosing the jitter noise type, and including a jitter error block into a previously proposed digitizer model. Experimental results highlighting the effectiv...

Timing jitter and noise are among the least understood engineering concepts, yet they are among the most critical parameters in analog and digital designs. Especially true in high-speed communication systems, poor jitter performance can cause increased bit-error rates and limit system speed. Timing jitter is generally defined as the short-term variation of a significant instant of a digital sig...

Output jitter| the variation in the inter-completion times of successive jobs of the same task | is studied in the context of the preemptive uniprocessor scheduling of periodic real-time tasks. A formal quantitative model for output jitter is proposed. A list of properties that are desirable in any jitter-minimization schedule is enumerated. Algorithms are presented for generating such schedule...