Measurement setups Set up histograms
Set up histograms
From the Measure menu, select Waveform Histograms, or click the Histogram button in the Measurement
Setup window.
Overview
Use the Hist
ogram control w indow to set up a vertical or horizontal histogram. Use vertical histograms to
measure signal noise and horizontal histograms to measure signal jitter.
To use
1. Use the Channels Selector (see page 258) to select the source waveform for the histogram
measurements.
2. Click the type of histogram you want to use for your measurement, Horiz (Horizontal) or Vert
(Vertical). When you make this selection, the instrument continues to calculate histograms until
yousetDisplaytoOff.
3. Click either Linear or Log to set the scaling.
4. Adjust the size of the histogram box (Horiz
(see page 294) or Ve rt (see page 295)) by clicking Limits
under Adjust Histogram Box. Use the multipurpose knobs or keypad
(see page 40) keypad t o set the
box boundaries.
5. Move the location of the histogram box (Horiz
(see page 296) or Ve rt (see page 297)) by clicking
Location under Adjust Histogram Box, and then use the multipurpose knobs or keypad to set the X
and Y locations.
NOTE. Yo u must explicitly click the Histogram Mode Off button to stop accumulating histogram data.
You can also click Reset to start a new histogram.
292 DSA/DPO70000D, MSO/DPO/DSA70000C, DPO7000C, and MSO/DPO5000 Series
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