Jitter Experiment Midterm presentation Performed by Greenberg Oleg Hahamovich Evgeny Spring 2008 Supervised by Mony Orbah

Agenda Objective Objective Exp. environment Exp. environment Accomplished Tasks Accomplished Tasks Topics to be covered Topics to be covered Implementation difficulties Implementation difficulties Time Table Time Table

Objective Creating an experiment environment, which will include theoretical introduction and practical exposure to the jitter subject, allowing the student to investigate and get familiar with Jitter types, components and sources

Experiment Environment Tabor Arbitrary Waveform Generetor 2571a Maximum frequency 100 MHz Sampling Rate 250 MS/s Ability to create different Modulation types Agilent Oscilloscope MS08104A Bandwidth 1 GHz Sample Rate 4 GS/s Customization Package, Jitter and Timing Analysis Jitter created by FM

Accomplished Tasks Eye diagram Eye diagram comparing between eye diagram of a clean signal vs. “noisy” (modulated) signal Unmodulated signal FM modulated signal

Accomplished Tasks Histogram Histogram - Histograms for different wave shapes - Histograms for different jitter measurement types Sin wave histogram TIE histogram for FM modulation by a sin wave

Accomplished Tasks Relation between different jitter measurement types Relation between different jitter measurement types - Visualization of diff-int relation between jitter measurement types - Calculating ratio of Std Dev for different jitter measurement types

TIE jitter trend Modulation by Square wave C2C jitter trend Period jitter trend

Std Dev Calculation

Topics to be covered DCD DCD create and measure for different waveforms (tabor) Bathtub curve Bathtub curve theory and relation to eye diagram, BER explanation, extrapolation theory (ezjit+) Methods for jitter separation Methods for jitter separation - Dual Dirac model + tail fit method - Furrier transport (ezjit+) Implementation difficulties

Time Table Implementing the uncovered parts of the experiment Implementing the uncovered parts of the experiment - DCD implementation option check½ week - Bathtub curve1 week - Jitter separation methods1 week 2 weeks Writing detailed documentation including step by step guidance to scope setup and measurement theory Writing detailed documentation including step by step guidance to scope setup and measurement theory 2 weeks Preparing final presentation Preparing final presentation 1 week Estimated deadline - mid. October Estimated deadline - mid. October

Questions