•
Period: defined as the time between the middle threshold points of two
consecutive, like-polarity edges.
•
Frequency: defined as the reciprocal of period.
•
Rise Time: indicates the time for the signal amplitude to rise from the threshold
lower limit to the threshold upper limit.
•
Fall Time: indicates the time for the signal amplitude to rise from the threshold
upper limit to the threshold lower limit.
•
+Width: indicates the time between the threshold middle value of a rising edge
to the threshold middle value of the next falling edge.
•
-Width: indicates the time between the threshold middle value of a falling edge
to the threshold middle value of the next rising edge.
•
+Duty: indicates the ratio of the positive pulse width to the period.
•
-Duty: indicates the ratio of the negative pulse width to the period.
•
Tvmax: indicates the time that corresponds to the maximum value of the
waveform (Vmax).
•
Tvmin: indicates the time that corresponds to the minimum value of the
waveform (Vmin).
The default values for threshold upper limit, threshold middle value, and threshold
lower limit are 90%, 50%, and 10%, respectively.
10.2.1.2
Count Values
The default values for threshold upper limit and threshold lower limit are 90% and
10%, respectively.
Positive Pulse Count
It is specified as the number of positive pulses that rise from under the threshold
lower limit to above the threshold upper limit.
Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved.
1
2
Measurements
Positive Pulse Count = n
n
Threshold
Upper Limit
Threshold
Lower Limit
DHO900 User Guide
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