Exfo PSO-100 Series Optical Sampling Oscilloscopes Manuel d'utilisateur Page 85

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Setting up and Using the Optical Sampling Oscilloscope
Optical Sampling Oscilloscope 77
Filter-Based Phase Tracking
Filter-Based Phase Tracking
If the piecewise constant algorithm cannot handle the timing jitter, and a
faster algorithm is required in order to track the phase, use the Filter based
phase tracking algorithm. It is typically needed in some transponder line
cards with relatively large phase noise.
You can set a software-defined filter bandwidth, which corresponds to a
hardware clock recovery circuit with the same bandwidth.
To activate the filter-based phase tracking:
1. From the main window, select the Utilities menu, then Advanced >
Phase tracking.
2. Select Filter based, then On.
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