Measurement setups Set up reference levels
Min-max uses th
e highest and lowest values of the
waveform record. This setting is best for examining
waveforms that have no l arge, flat portions at a common
value, such as
sine waves and triangle waves - almost any
waveform except for pulses.
Histogram Mode sets the values statistically. Using a
histogram, it selects the m ost common value either above or
below the midpoint (depending on whether it is defining the
high or low reference level). Since this statistical approach
ignores short-term aberrations (overshoot, ringing, and so
on), Mode is the best setting for e xamining pulses.
Histogram Mean sets the values statistically. Using a
histogra
m, it selects the mean or average value derived
using all values either above or below the m idpoint
(depending on whether it is defining the high or low
referen
ce level). This s etting is best for examining e ye
patterns and optical signals.
xxx
What do you want to do next?
Return to the Measurement Setup control window overview. (see page 268)
Learn more about Measurement controls. (see page 289)
Learn about using Gating to specify measurement areas. (see page 289)
Learn about using measurement Statistics. (see page 285)
High reference
The High Reference defines the high reference level of a waveform; the default level is 90%. This
reference level is used with the Low Reference level in the calculation of rise and fall times. To
change this level, click the control, and then set the level with the multipurpose knob.
288 DSA/DPO70000D, MSO/DPO/DSA70000C, DPO7000C, and MSO/DPO5000 Series
To Next Page
Loading...
Need help?
General
