Analyzing waveforms
Reference Levels
Reference levels determine how time-related
measurements are taken.
1.
Select
Measure > Reference Levels...
.
2.
Adjust the measurement reference levels
to different relative or absolute values.
High and Low references are used
to calculate rise and fall times. The
default High reference is 90% and
Low reference is 10%.
Mid reference is primarily used for
measurements between edges such
as pulse widths. The default level is
50%.
Mid2 reference is used on the second
waveform speci
fi
ed in delay or phase
measurements. The default level is
50%.
Quick tips
To ensure accurate noise values, be sure to go to the Reference Levels Setup menu and set the signal type to Eye
when measuring an Eye signal.
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MSO/DPO70000DX, MSO/DPO70000C, DPO7000C, and MSO/DPO5000B Series User Manual