232 Agilent InfiniiVision 3000 X-Series Oscilloscopes User's Guide
14 Measurements
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 selected edge on source 1
and the selected edge on source 2 closest to the trigger reference point at
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 Ty pe : softkey; then, turn the Entry knob to select Delay.
4 Press the Settings softkey to select the second analog channel source
and slope for the delay measurement.
The default Delay settings measure from the rising edge of channel 1 to
the rising edge of channel 2.
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