16 SDA-OM-E Rev H
SDA Function Reference .................................................................................. 346
AltNcycle ................................................................................................................... 347
AltNcycle Control Summary .................................................................................................. 348
Htie to BER ................................................................................................................ 350
Jitter Filter Function ................................................................................................... 352
Slice2Persist .............................................................................................................. 353
Multi-Eye Measurements .................................................................................. 355
Overview of Multi-Eye Measurement Tools ............................................................... 355
Setup and Installation ................................................................................................ 356
Multi-Eye Setup and Installation ........................................................................................... 356
Example Setups .................................................................................................................... 357
Front Side Bus (FSB) ................................................................................................ 359
Introduction to FSB ............................................................................................................... 359
FSB Theory of Operation ...................................................................................................... 360
Transition/Non-Transition Eye Diagram .................................................................... 363
Gated (Qualified) Eye Diagram ................................................................................. 364
SDA Theory ...................................................................................................... 365
Clock recovery ........................................................................................................... 365
Eye Pattern ................................................................................................................ 368
Eye Violation Locator (ASDA Option) ................................................................................... 369
Eye Pattern Measurements ....................................................................................... 370
Eye Amplitude ....................................................................................................................... 370
Eye Height............................................................................................................................. 371
Eye Width .............................................................................................................................. 371
Extinction Ratio ..................................................................................................................... 371
Eye Crossing ......................................................................................................................... 371
Average Power ..................................................................................................................... 371
Q Factor or BER ................................................................................................................... 372
eyeBER ................................................................................................................................. 372
Jitter Measurement .................................................................................................... 373
Bit Error Rate and Jitter ........................................................................................................ 375
Total Jitter ............................................................................................................................. 375
Extrapolating the PDF ........................................................................................................... 377
Separating Rj and Dj – Two Methods ................................................................................... 379
Effective Random and Deterministic Jitter ............................................................................ 379
Direct Measurement of Deterministic Jitter ........................................................................... 380
Comparing Models .................................................................................................... 382
Bit Error Rate ........................................................................................................................ 383
Bit Error Map ......................................................................................................................... 383
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