Finding a pattern in a sampling – EXFO PSO-100 Series Optical Sampling Oscilloscopes User Manual
Page 44

Setting up and Using the Optical Sampling Oscilloscope
36
PSO-100
Finding a Pattern in a Sampling
Finding a Pattern in a Sampling
If for some reason the pattern does not show up in your measurement, but
numerous eye diagrams instead, you can find the pattern using your unit.
Note: It will only work if you have a repetitive pattern, not random data or
SONET/SDH framed data.
Before you do this, make sure that you have inserted the correct pattern
length. Also insert the approximate signal frequency (and clock subrate if
using the external clock). For example you may not know the signal
frequency exactly, which results in incorrect time scale. But if you still want
to see the pattern use the find pattern function.
To find the pattern in your sampling:
1. Make sure that you are in pattern display mode, and that the sampling
is running.
2. From the main window, select the Utilities menu, then Find pattern.
The pattern is displayed automatically.
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