The Amplitude Measurements panel measurements
Measurement Description
AC RMS The true Root Mean Square voltage, minus any DC component, of the waveform data points that are
above the Mean signal level. Y
ou can take this measurement on each cycle in the waveform record or
on the entire waveform record.
Amplitude The difference between the Top value and the Base value. You can take this measurement on each
cycle in the waveform record or on the entire waveform record.
Area The area between the waveform and the Mean value, calculated by integrating the data points. The
area above ground (0 V) is positive, while the area below ground is negative. You can take this
measurement on each cycle in the waveform record or on the entire waveform record.
Base
1
The most common data point value below the midpoint of the waveform, over the measurement region.
Base is used as the 0% value whenever low reference values are calculated, such as in rise time or fall
time measurements. You can take this measurement on each cycle in the waveform record or on the
entire waveform record.
Maximum The maximum data point value. You can take this measurement on each cycle in the waveform record
or across the entire waveform record.
Mean The arithmetic mean of all data points over the measurement region. You can take this measurement
on each cycle in the waveform record or on the entire waveform record.
Minimum The minimum data point value. You can take this measurement on each cycle in the waveform record
or on the entire waveform record.
Negative Overshoot
1
The difference between the Minimum and Base values, divided by the Amplitude, and multiplied by
100 to express the measurement as a percentage of amplitude. You can take this measurement on
each cycle in the waveform record or on the entire waveform record.
Peak-To-Peak The absolute difference between the Maximum and Minimum amplitudes in the measurement region.
You can take this measurement on each cycle in the waveform record or on the entire waveform
record.
Positive Overshoot
1
The difference between the Maximum value and the Top value, divided by the Amplitude, and
multiplied by 100 to express the measurement as a percentage of amplitude. You can take this
measurement on each cycle in the waveform record or on the entire waveform record.
RMS The true Root Mean Square (The square root of the mean (average) value of the squared function of
the waveform data points.) You can take this measurement on each cycle in the waveform record or on
the entire waveform record.
Top
1
The most common data point value above the midpoint of the waveform over the measurement region.
Base is used as the 100% reference value whenever high reference values are calculated, such as in
rise time or fall time measurements. You can take this measurement on each cycle in the waveform
record or on the entire waveform record.
See also
Measurement configuration menu overview on page 1
14
1
Changing your Base T
op Method in the Reference Levels panel of the Measurement configuration menu may change how this value is calculated.
Menus and dialog boxes
108
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