LeCroy DDA 7 Zi series, Operator'S Manual

Page: 115 / 544

Operator's Manual
WP700Zi-OM-E-RevA
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5. Touch inside the Measurement field and select a parameter from the pop-up menu.
6. Touch inside the Graph with field and select Histogram from the pop-up menu.
7. In the dialog to the right, touch the Histogram tab.
8. On the Buffer side of the Histogram tab, touch inside the #Values data entry field and enter a value or
use the slider bar at the bottom of the window. Click the keypad button on the slider bar to enter a
value using the pop-up keypad..
9. On the Scaling side of the Histogram tab, touch inside the #Bins data entry field and enter a value or use
the slider bar at the bottom of the window. Click the keypad button on the slider bar to enter a
value using the pop-up keypad..
10. Touch the Find Center and Width button to center the histogram. Or touch inside the Center , then the
Width , data entry fields and enter a value or use the slider bar at the bottom of the window. Click the
keypad button on the slider bar to enter a value using the pop-up keypad.
11. Touch inside the Vertical Scale field and select Linear or Linear Constant Max from the pop-up
menu .
Viewing Thumbnail Histograms (Histicons)
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.
1. On the menu bar, touch Measure , then one of the Measure Mode buttons: Std Vertical , Std Horizontal ,
or My Measure .
2. Touch the Histicons checkbox to display thumbnail histograms below the selected 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 (JTA2 option)
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.
Setting Up Persistence Histograms
1. Touch Math Math Setup on the menu bar.
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 from the Select Math Operator window.
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.
Persistence Trace Range
Using this math operation, you can enter the percent of the persistence trace population to use in creating a new
waveform.