Agilent Technologies DSO-X 4022A, User Manual

Page: 259 / 488

Measurements
14
Agilent InfiniiVision 4000 X-Series Oscilloscopes User's Guide 259
Rise Time
The rise time of a signal is the time difference between the crossing of the
lower threshold and the crossing of the upper threshold for a
positive- going edge. The X cursor shows the edge being measured. For
maximum measurement accuracy, set the horizontal time/div as fast as
possible while leaving the complete rising edge of the waveform on the
display. The Y cursors show the lower and upper threshold points.
Fall Time
The fall time of a signal is the time difference between the crossing of the
upper threshold and the crossing of the lower threshold for a
negative- going edge. The X cursor shows the edge being measured. For
maximum measurement accuracy, set the horizontal time/div as fast as
possible while leaving the complete falling edge of the waveform on the
display. The Y cursors show the lower and upper threshold points.
Delay
Delay measures the time difference from the specified source 1 edge that
is closest to the center of the screen and the nearest specified source 2
edge using the middle threshold points on the waveforms.
Negative delay values indicate that the selected edge of source 1 occurred
after the selected edge of source 2.
1
Press the
[Meas]
key to display the Measurement Menu.
2
Press the
Source
softkey; then turn the Entry knob to select the first
analog channel source.
3 Press the Type: softkey; then, turn the Entry knob to select Delay .
Duty cycle =
+ Width
Period
× 100
Source 2
Source 1
Delay