3 Using the Oscilloscope
70 Keysight U1610/20A User’s Guide
Duty Cycle (–), Duty Cycle (+), Fall Time, Rise Time, Frequency, Period,
Width (–), Width (+)
The duty cycle (–) and (+) of a repetitive pulse train are expressed as follows:
The fall time is the time difference between the crossing of the upper threshold
and the crossing of the lower threshold for a negative-going edge.
The rise time is the time difference between the crossing of the lower threshold
and the crossing of the upper threshold for a positive-going edge.
Frequency is defined as 1/Period.
Period is the time period of the complete waveform cycle.
Width (–) is the time from the middle threshold of the falling edge to the middle
threshold of the next rising edge.
Width (+) is the time from the middle threshold of the rising edge to the middle
threshold of the next falling edge.
Phase Shift
Phase shift is expressed as follows:
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