Analyzing Wavef
orms
Statistics
Statistics tu
rn on automatically with
measurements. Statistics characterize the
stability of the measurement.
1. To change the statistics that are
displayed, se
lect Measure > Statistics,
and then select Mean or All. (All includes
min, max, mean, standard deviation, and
population.
)
2. To remove sta
tistics select Off.
Reference Levels
Reference levels determine how time-related
measurements are taken.
1. Select Measure > Reference Levels....
2. Adjust the m easurement reference levels
to different relative or absolute values.
High and Low reference are used
to calculate rise and fall times. The
default High reference is 90% and
Low reference is 10%.
Mid reference i s primarily used for
measurements between edges such
as pulse widths. The default level is
50%.
Mid2 reference is used on the second
waveform specified in delay or phase
measurements. The default level is
50%.
Quick Tips
To ens
ure accurate noise values, be sure to set the signal type to Eye when measuring an Eye signal.
54 DPO7000 Series Q uick Start User Manual
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