EXFO PSO-100 Series Optical Sampling Oscilloscopes - Manual (Page 83)

Setting up and Using the Optical Sampling Oscilloscope
Optical Sampling Oscilloscope 75
Managing Synchronization
Managing Synchronization
There are two synchronization methods used for measurements:
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The fast sync, which implies that only a fine-tuning is done from the
last measurement. This is the default method.
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If the fast sync is switched off, the software performs a coarse sync
every time, which takes more time, but is convenient when tuning the
signal frequency continuously during the measurement, for example
when optimizing the signal frequency of a ring laser.
To activate the fast sync option:
1. From the main window, select the Utilities menu.
2. Select Synchronization options.
3. Specify whether you want fast or slow sync.