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Summary of Contents for SIA-3000

Page 1: ...WAVECREST Corporation Examining Clock Signals And Measuring Jitter with the WAVECREST SIA 3000 Application Note No 142 200142 00 REV A...

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Page 3: ...fer in some respect from its published description but will always equal or exceed the original design specifications unless otherwise stated Copyright 2002 WAVECREST Corporation A Technologies Compan...

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Page 5: ...J and DJ 4 Find the Causes of DJ Identify PJ Crosstalk and Modulation 5 Identify the Spectral Content of the Jitter 6 Identify Possible Low Frequency Jitter Content 7 Analyze Long term Drift Wander 8...

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Page 7: ...s of tool settings measurement setup and theory of measurement This application note will discuss how to use the various VISITM tools to fully characterize your signal These tools allow many different...

Page 8: ...l is for qualitative analysis as well as measuring voltage parameters including rise or fall times A different measurement engine is used for jitter analysis those tools follow this page Connect the c...

Page 9: ...number of hits Figure 2 Results from the most recent pass are displayed as Latest text Results from accumulated statistics are display as ACCUM text The Maximum Histogram view below shows all accumul...

Page 10: ...st value is Total Jitter TJ which includes contributions from all deterministic and random components and is a pk pk value specified for a Bit Error Rate BER or amount of time The Bathtub curve shows...

Page 11: ...gh end maximum frequency is always the clock frequency or less Figure 4 1 Sigma values vs number of periods skipped Analysis of 2GHz clock from Figure 2 Note that this is a zoomed view to show details...

Page 12: ...ew Add a view by pressing ADD VIEW on the front panel or press on the top menu bar Change this view to Summary Figure 5 FFT shows jitter frequencies and amplitudes Analysis of 2GHz clock from Figure 3...

Page 13: ...or less Minimum Data Points determines the number of time measurements in the record Increasing this value will reduce the possibility of aliasing increase FFT resolution and allow lower frequency co...

Page 14: ...tool allows histograms to be performed at regular intervals chosen by the user In other words when a histogram is performed the tool waits for a specified time interval and then performs another hist...

Page 15: ...ng histogram statistics at user defined intervals Figure 9 shows the results from the same tool but a different view of the measurements from Figure 7 In this case the 1 sigma and Peak to Peak values...

Page 16: ...iod Pulsewidth Pulsewidth Duty Cycle and Frequency Counter The Statistics tool is valuable in that it is the only tool to show Duty Cycle and Frequency Counter information Additionally it shows the ba...

Page 17: ...nel or the top menu or Press the RUN button on the front panel or the top menu Figure 11 Shows statistics from histogram measurements of Cycle to Cycle or the difference of two adjacent cycles Period...

Page 18: ...u Figure 12 Shows statistics from histogram measurements of Skew or Propagation delay between two or more channels This tool is useful for measuring the skew between two or more signals One example is...

Page 19: ...software tools for advanced analysis of PLLs The PLL analysis module can provide Transfer function Poles and Zero Bode Plot Carrier Frequency Damping Factor Natural Frequency PSD of Noise Lock Range L...

Page 20: ...ansastrasse 136 Otsuka Sentcore Building 6F Eden Prairie MN 55344 San Jose CA 95110 D 81373 M nchen 3 46 3 Minami Otsuka TEL 952 831 0030 TEL 408 436 9000 TEL 49 0 89 32225330 Toshima Ku Tokyo FAX 952...

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