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Set, display, and reset
histogram source and
type
3. Select the Source Ch, Math, or Ref tab, and then select the
waveform source for the histogram.
4. Click either Histogram Mode button to start histogram
counting and display the histogram data:
 Horiz displays a horizontal histogram that shows how
time varies in the histogram box.
 Vert displays a vertical histogram that shows how your
vertical units vary in the histogram box.
 Off turns off histogram counting and display.
Note that this control turns on histogram counting and data
display. You can only display one type of histogram at a time.
5. Click Reset to reset the histogram count. Histograms track
numbers of counts. Clicking Reset resets those counts to
zero and begins counting from zero.
6. Click Display to toggle the display of the selected
histogram on and off.
Select histogram scale
7. Click a Histogram Scaling option:
 Linear displays histogram data linearly. Bin counts
smaller than the maximum counts are scaled linearly by
dividing the bin count by the maximum bin count.
Horizontal histograms have a maximum of 500 bins while
vertical histograms have a maximum of 200 bins.
 Log displays histogram data logarithmically. Bin counts
smaller than the maximum counts are scaled
logarithmically. Logarithmic scaling provides better
visual details for bins with low counts.
Set histogram limits
8. Click Adjust Histogram Box Limits and use the Top Limit,
Bottom Limit, Left Limit, and Right Limit controls to set
the size of the histogram box. The histogram box selects
the section of the waveform used for histograms.
9. Click Adjust Histogram Box Location and use the X
Location and Y Location controls to set the location of
the histogram box.
Right-click and select Clear Data from the short cut menu to clear histogram data.
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