Operating Basics
TDS5000B Series Quick Start User Manual
63
Quick Tips
H In roll mode, measurements are not available until after you stop the acquisition.
H To add measurements, right-click the waveform handle and then select Add Measurement.
H To remove a measurement, right-click on that measurement readout and then select Remove.
H To remove all measurements, right-click on any measurement readout and then select Remove All.
Automated Measurement Selections
The following tables list each automated measurement by category: amplitude, time, more, histogram, or
communication. See page 62 for how to select a measurement.
Amplitude Measurements
Amplitude The high value less the low value 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 measurements. It can be calculated
using either the m in/max or histogram method. The min/max method uses the maximum
value found. The histogram method uses the most common value found above the
midpoint. This v alue 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. It can be calculated using
either the m in/max or histogram method. The min/max method uses the minimum value
found. The histogra m method uses the most common value found below the midpoint.
This value is measured over the entire waveform or gated region.
RMS The true Root Mean Square voltage over the entire waveform or gated region.
Max Typically the most positive peak voltage. Max is measured over the entire waveform or
gated region.
Min Typically the most negative peak voltage. Min is measured over the entire waveform or
gated region.
Pk-Pk The absolute difference between the maximum and minimum amplitude in the entire
waveform or gated region.
Cycle RMS The true Root Mean Square voltage over the first cycle in the waveform or the first cycle
in the gated region.
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