Tektronix 11801C User Manual page 143

11801C User Manual
Figure 2 52: A Vertical Histogram Display
You can adjust the histogram limits to restrict the range of trace record
points that the 11801C will recognize as valid data points.
Step 11: Touch Persist/Histograms to redisplay the pop up menu.
Step 12: Select Vertical Limits in the pop up menu.
The knobs are now assigned to Top and Bottom.
Step 13: Use the knobs to adjust the top and bottom limits of the histo
gram, and observe the changes in the distribution displayed. Note that
in Infinite Persist mode, changing a limit causes all trace data to be
cleared and new data to be acquired. You can save time using Color
Graded mode because the trace data doesn't need to be cleared.
Example 10: Creating a Histrogram Display
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