Analyze Waveform Data
Amplitude Measurements (cont.)
Measurement Description
Max
The most positive peak voltage. Max is m easured over the entire waveform or gated region.
Min
The most negative peak voltage. Min is measured over the entire waveform or gated region.
High
This value is used as 100% whenever high reference, mid reference, or low reference
values are needed, such as in fall time or rise time measu remen ts. Calculate using either
the min/max or histogram m e thod. The min/max method uses the maximum value found.
The histogram method uses the most common value found above the midpoint. This value is
measured over the entire waveform or gated region.
Low
This value is used as 0% whenever high reference, mid reference, or low reference values are
needed, such as in fall time or rise time measurements. Calculate using either the min/max
or h istogram m et hod. The min/max method uses the minimum value found. The histogram
method uses the m ost common value fou nd below the midpoint. This value is measured
ov
er the entire waveform or gated region.
Positive
Overshoot
This is measured over the entire wave form or gated region and is expressed as:
Positive Overshoot = (Maximum – High) / Amplitude x 100%.
Negative
Overshoot
This is measured over the entire wave form or gated region and is expressed as:
Negative Overshoot = (Low – Minimum) / Amplitude x 100%.
DPO2000 and MSO2000 Series Oscilloscopes User Man ual 177
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