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 calculate
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. The 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 to go to the Reference Levels Setup menu and set the signal type to Eye
when measuring an Eye signal.
124 MSO/DPO70000DX, MSO/DPO70000C, DPO7000C, and MSO/DPO 5000B Series U ser M anual