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35 Threads found on Eye Jitter
look the pic I paste. How to specify the interval for generating an eye diagram ? I think it can not be arbitrary but a multiple of the period of the interested wavefrom. Otherwise the waveform in the second interval can not be exactly superimposed with that in the first interval even without any jitter in the waveform at all. But in practical
measure the jitter draw the eye diagram after transient analysis best regards, Rania
hey anyone, done real time testing using evaluation board? how to ensure that the eye diagram's jitter is not caused by test setup? i am testing a optical transmitter at 1.25gbps.
I have some questions for help. 1. How to simulate the nonlinearity of a relaxation oscillator. 2. Why some papers use HD2 to descripe the control linearity of a oscillator instead of the THD or HD3. 3. what's the difference between ' .fft , .four ' 4. What type of jitter can be measured by eye diagram? Is it cycle-cycle jitter? (...)
Dear all, I really wonder the eye diagram definition in most serial link standard such as SATA, 1394 and USB2.0. I understand the eye closure is decided by deterministic jitter and random jitter which are above jitter corner frequency. Also I understand those high frequency jitter is (...)
Dear all, Should we only observe the peak-to-peak jitter from eye diagram in Hspice? And, I have another question that's why peak-to-peak jitter is almost 7 times more than std. dev. jitter where std. dev. is standard deviation.
i think due to the noisy eye; you cannot accurately perform BER testing or estimate sensitivity based on the eye diagram. i experienced the same situation about a year ago. first of all please confirm that the noise and jitter observed in the eye diagram is caused by design or layout issues and not by your test setup. (...)
eyeCALC is an easy to use behavioral eye diagram simulator from EECALC. Free 30 day trial download. Features: * Dual Dirac capability, Pre-emphasis, Custom eye masks * BER calculation, Bathtub curves, Slicer level/phase, jitter pp estimation * Impulse response, Mag, Group Delay * Export to Excel, Save to Clipboard, (...)
Hi, Some one told me that if we introduce the hysteresis into the differential input, you would see an inordinate amount of jitter in the eye diagram, hence degrading the Bit Error Rate by using hysterisis. Would anyone help to explain why? Thanks
I don't think you are able to generate an eye diagram from a clock signal (1010). The eye diagram is generated from a PRBS signal such as PRBS7 or PRBS23, etc.. For a clock signal the important parameters are rise/fall time, RMS jitter (phase noise), Vout_pp vs. Frequency.
oringinal hspice command is too simple I must create FSK like ?pulse? signal and must with jitter --> I use idea switch and many source merge this signal if I want to generate FSK signal if I want to generate eye diagram random pulse if I want to gernerate FSM signal + rise/fall edge with jitter overshoot (...)
I use script to measure the every period, then display in a diagram. I think you can use eye diagram, but i never try it.
lots of tools you can use cscope sandwork you can see the eye diagram to see it i use sandwork it is great
If you can use SPECTRA software from Cadence, it can calculate the jitter and simulate eye diagrams. use the latest version. One of my friends is using it now. Very cool. bye
Hi All, Can you guys give me precise definitions of the following, with respect to VCO or PLL terminology. 1) Deterministic jitter (DJ) 2) Periodic jitter (PJ) 3) Random jitter (RJ) 4) Peak to Peak jitter (PPJ) 5) eye Diagram 6) RMS jitter 7) Total jitter 8) (...)

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