Keysight 4000 X-Series, Руководство по продвинутой подготовке

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50 4000 X-Series Oscilloscopes Advanced Training Guide
3
Advanced Triggering, Search & Navigation, and Segmented Acquisition Labs
Your scope should now be triggering at the end of the 5th pulse of the burst as
shown in Figure 26 . This particular pulse uniquely meets the pulse width time
qualification of > 250 ns, but < 350 ns. You can select the +Wid th measurement if
you would like to verify that this pulse has an approximate width of 300 ns.
Now take note of the narrow infrequent glitch that occurs after the end of this
burst of six pulses. In addition to using the scope’s Pulse Width trigger type to
trigger on “known” pulses that have unique widths, such as this 300 ns wide pulse,
we can also use the Pulse Width triggering mode to trigger on “unknown” or
“unwanted” glitches. Let’s do it.
14
Tap the “ < > >< ” softkey; then select the “ < ” time qualifier.
15
Tap the < 30 ns softkey; then set the time to < 50 ns .
Figure 26 Triggering on a 300 ns wide pulse using the scope’s Pulse Width triggering mode.