Rigol MSO4000 Series User Manual page 191

Chapter 6 Operations and Measurements
Time Parameters
1. Period: the time between the threshold middle value of one edge to the
2. Freq: frequency; the reciprocal of period.
3. Rise Time: the time for the signal amplitude to rise from the threshold lower
4. Fall Time: the time for the signal amplitude to fall from the threshold upper
5. + Width: positive pulse width; the time between the threshold middle value of
6. - Width: negative pulse width; the time between the threshold middle value of
a falling edge to the threshold middle value of the next rising edge.
7. + Duty: positive duty cycle; the ratio of the positive pulse width (+ Width) to
the period.
8. - Duty: negative duty cycle; the ratio of the negative pulse width (- Width) to
the period.
Note: In the figure above, the default values of the threshold upper limit, threshold
middle value and threshold lower limit are 90%, 50% and 10% respectively. You can
also set them via Measure  Setting  Type  "Threshold". For the setting
method, refer to "To Set the Threshold".
MSO4000/DS4000 User's Guide
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Rise Time
+Width
threshold middle value of the next edge with the same polarity.
limit to the threshold upper limit of the rising edge.
limit to the threshold lower limit of the falling edge.
a rising edge to the threshold middle value of the next falling edge.
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15
10 20
5 25
0 30
Fall Time
-Width
Period
RIGOL
Threshold
Upper Limit
Threshold
Middle Value
Threshold
Lower Limit
6-25
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