Markers
You can measure a time interval manually using the markers in the HP 54720.
One advantage of using markers is that you can expand the time base around
the start and stop events of the time interval to be measured, thus achieving
more time resolution than with automatic measurements (you are not limited
by the memory depth). To see the difference, set up a pulse generator for a
pulse width of 100 ms and a rise time of 1 ns (or as small as the pulse
generator will allow). Then, measure the width both by using the
oscilloscope’s automatic measurement and by using the markers.
Channel-to-Channel Measurements
To make channel-to-channel measurements, such as propagation delay, setup
time, or hold time, you must remove any systematic differences in the delays
between the two acquisition channels and any associated probes or cables.
Measurements
Measuring time intervals
13–25
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