jitter


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jitter

[′jid·ər]
(communications)
In facsimile, distortion in the received copy caused by momentary errors in synchronism between the scanner and recorder mechanisms; does not include slow errors in synchronism due to instability of the frequency standards used in the facsimile transmitter and recorder.
(electronics)
Small, rapid variations in a waveform due to mechanical vibrations, fluctuations in supply voltages, control-system instability, and other causes.

jitter

i. An ECCM (electronic counter-countermeasure) technique in which the radar PRF (pulse repetition frequency) is made to vary in a random manner.
ii. The instability of the signal or trace of a cathode-ray tube.
iii. Small rapid variations in a waveform caused by deliberate or accidental electrical or mechanical disturbances or to changes in the supply voltages, in the characteristic of components, etc.

jitter

Random variation in the timing of a signal, especially a clock.

jitter

A flicker or fluctuation in a transmission signal or display image. The term is used in several ways, but it always refers to some offset of time and space from the norm. For example, in a network transmission, jitter would be a bit arriving either ahead or behind a standard clock cycle. In computer graphics, to "jitter a pixel" means to place it off side of its normal placement by some random amount in order to achieve a more natural appearance. See anti-aliasing. See also jitterati.
References in periodicals archive ?
With RMS phase jitter less than 500 fsec over the full 12 kHz to 20 MHz integration range, the new devices meet the stringent jitter and phase noise requirements of applications and standards such as 10G Ethernet, enterprise storage SAS and SATA, PCI Express Gen 1/2/3, XAUI, SRIO, stringent PHY reference clocks and the newest generations of high-end FPGAs all while operating at about half the core power of competing devices.
Engineers must understand how their transmitters, channels, and links affect PAM4 eye quality, and quantify the degree of eye closure due to timing jitter and noise as a function of bit error ratio (BER).
Vijay Kulkarni, the CEO of the company said, “When a signal traverses a network, the jitter generated by a DUT becomes the input jitter to the next part of the network.
A new microscope system can compensate for those jitters, known as Brownian motion.
The effect of trigger jitter on the measurement of signals is to add signal-dependent noise and to reduce the measurement bandwidth or, equivalently, to slow the step response of the measurement instrumentation.
These signals display good rise and fall times, controlled overshoot and undershoot, and an acceptable amount of jitter, as evidenced by the width of each eye opening.
As networking infrastructure equipment migrates to higher line rates, improving jitter performance is becoming a critical decision factor.
14, 2014 /PRNewswire/ -- Anritsu Company introduces a jitter modulation source and passive linear equalizers for its MP1800A that allow the BERT to generate wide-amplitude SJ with low intrinsic jitter.
To estimate the standard deviation of jitter noise, many (hundreds to thousands) jittered signals are measured.
Measurements of signal quality are Amplitude, Rise Time, Fall Time, and Jitter (Random and Deterministic).