Tektronix OM4006D, Руководство пользователя

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Operating basics
Table 8: OUI plots (real-time oscilloscopes) (cont.)
Plot Description
The coherent eye diagram for X or Y signal polarization shows the In-Phase or
Quadrature components vs. time modulo two bit periods. The Q-factor results are
provided in a tab below accessed by clicking on the arrows in the lower left corner.
Right-click on the coherent eye diagram to get options including transition and eye
averaging. The transition average shown in red is an average of each logical transition.
The calculation is enabled in the Analysis Parameters tab and is used for calculating
transition measurements.
The Power Eye shows the computed power per polarization vs time modulo 2 bit periods.
This is a calculation of the eye diagram typically obtained with a photodiode-input
oscilloscope.
Most plots can be viewed in colorgrade by right-clicking on the plot.
Right-click on the X vs T plot to display fi eld, averaged- fi eld, and symbol quantities. Zoom
in or out or scroll through the record. Error symbols are shown in red.
26 OM4000D Series Coherent Lightwave Signal Analyzer