HP HP 54600B, User'S And Service Manual

Page: 43 / 183

To make time measurements automatically
You can measure the following time parameters with the oscilloscope:
frequency, period, duty cycle, width, rise time, and fall time. The following
exercise guides you through the Time keys by making a rise time
measurement. Figure 2-6 shows a pulse with some of the time measurement
points.
1
Connect a signal to the oscilloscope and obtain a stable display.
When the signal has a well-defined top and bottom (see figure 2-8), the rise
time and fall time measurements are made at the 10% and 90% levels. If the
oscilloscope cannot find a well-defined top or bottom (see figure 2-9), the
maximum and minimum levels are used to calculate the 10% and 90% points.
Time Measurement Points
Figure 2–6
Operating Your Oscilloscope
To make time measurements automatically
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