Analyzing wavef
orms
Reference Levels
Reference lev
els 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 c alculate
rise and fall times. The
default High reference is 90% and
Low reference is 10%.
Mid reference is primarily used for
measureme
nts between edges such
as pulse widths. T he default level is
50%.
Mid2 reference is used on the second
waveform s
pecified in delay or phase
measurements. The default level is
50%.
Quick ti
ps
To ensure accurate noise values, be sure go to the Reference Levels Setup menu and set the signal type to E ye
when measuring an Eye signal.
MSO/DPO70000DX, MSO/DPO70000C, DP O7000C, and MS O/DPO5000 Series U ser M anual 121
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