Agilent Technologies 71501D Manuale Utente Scaricare il pdf (Pagina 83)

3-3

Eye-Diagram Analyzer Reference

Performing Eye-Diagram Measurements

To perform the automatic eye-diagram measurements, use the Measure menu.

With the exception of extinction ratio, these measurements must be per-

formed in eye mode.

Automatic Measurements

The Measure menu’s top two softkeys automatically start measurements:

• EXTINCT RATIO

• MEASURE EYE

• Use the EXTINCT RATIO softkey to automatically compute the extinction ratio

in eye or eyeline modes. This measurement is a ratio of the most prevalent log-

ical one level divided by the logical zero level over one bit interval. When mak-

ing extinction ratio measurements in eyeline mode, the number of samples

should be increased from the default of 1000 to approximately 20000. This in-

sures that a number of traces are evaluated to compute the extinction ratio.

1 2 ... 78 79 80 81 82 83 84 85 86 87 88 ... 175 176

Nessun commento

Agilent Technologies 71501D Manuale Utente Pagina 83