Viewing Thumbnail Histograms; Persistence Histogram; Persistence Trace Range; Persistence Sigma - LeCroy SDA Operator's Manual

Serial data analyzer
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Viewing Thumbnail Histograms

Histicons are miniature histograms of parameter measurements that appear below the grid.
These thumbnail histograms let you see at a glance the statistical distribution of each parameter.
In the menu bar, touch Measure, then one of the Measure Mode buttons: Std Vertical, Std
1.
Horizontal, or My Measure.
Touch the Histicons checkbox to display thumbnail histograms below the selected
2.
parameters.
Note: For measurements set up in My Measure, you can quickly display an enlarged histogram of a thumbnail histogram
by touching the Histicon you want to enlarge. The enlarged histogram will appear superimposed on the trace it describes.
This does not apply to "Std Vertical" or "Std Horizontal" measurements.

Persistence Histogram

You can create a histogram of a persistence display also by cutting a horizontal or vertical slice
through the waveform. You also decide the width of the slice and its horizontal or vertical
placement on the waveform.
This math operation is different than the "Histogram" math operation and is not affected by
Center and Width settings made there.
Persistence Histogram Setup
1. In the menu bar, touch Math, then Math Setup.
2. Touch one of function tabs F1 through Fx The number of math traces available depends on
the software options loaded on your scope. See specifications..
3. Touch inside the Source1 field and select a source from the pop-up menu.
4. Touch inside the Operator1 field and select Phistogram
Operator menu.
5. Touch the "Phistogram" tab, then touch inside the Slice Direction field and select Horizontal
or Vertical slice from the pop-up menu.
6. Touch inside the Slice Center field and enter a value, using the pop-up keypad.
7. Touch inside the Slice Width field and enter a value, using the pop-up keypad.
Note: You can use the front panel Adjust knobs to move the Slice Center line and the Slice Width boundary lines.

Persistence Trace Range

This math operation has a field where you can enter the percent of the persistence trace
population to use in creating a new waveform.

Persistence Sigma

This math operation has a field where you can enter a scale, measured in standard deviations, by
which to create a new waveform.
118
from the Select Math
SDA-OM-E Rev H

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