Rigol DS1000Z-E Series User Manual page 125

Chapter 6 MATH and Measurement
Time Parameters
1. Period: defined as the time between the middle threshold points of two
2. Freq: defined as 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: the time difference between the threshold middle value of a rising
6. -Width: the time difference between the threshold middle value of a falling
7. +Duty: the ratio of the positive pulse width to the period.
8. -Duty: the ratio of the negative pulse width to the period.
9. tVmax: the time corresponding to the waveform maximum value (Vmax).
10. tVmin: the time corresponding to the waveform minimum value (Vmin).
Note:
threshold lower limit are 90%, 50% and 10% respectively. You can set them via
Measure  Setting  Type  "Threshold" and for the setting method, please
refer to the introduction in "Threshold Measurement Setting".
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Rise Time
+Width
Period
Figure 6-3 Time Parameters
consecutive, like-polarity edges.
limit to the threshold upper limit.
limit to the threshold lower limit.
edge and the threshold middle value of the next falling edge of the pulse.
edge and the threshold middle value of the next rising edge of the pulse.
The default values of the threshold upper limit, threshold middle value and
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Fall Time
-Width
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Threshold
Upper Limit
Threshold
Middle Value
Threshold
Lower Limit
6-25
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