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Advanced Triggering, Search & Navigation, and Segmented Acquisition Labs
Lab #8: Triggering on Unique Pulses and Glitches using "Pulse-width"
Trigger
In this lab you will learn how to use the scope's Pulse Width triggering
mode to trigger on pulses within a digital data stream that have unique
pulse widths, including an infrequently occurring glitch.
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Figure 25 Capturing a digital burst using the scope's default Edge triggering mode.
You should now see on your scope's display a digital burst waveform
consisting of six pulses of various widths, followed by an infrequent glitch
similar to
scope usually triggers on the 1st pulse of this burst. But if you increase
the scope's waveform intensity to 100%, you will see that the scope
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Connect the channel- 1 probe to the Demo 1 terminal and ground.
Press [Default Setup] on the scope's front panel.
Press [Help]; then press the Training Signals softkey.
Using the Entry knob, select the Digital Burst with Infrequent Glitch signal;
then press the Output softkey to turn it on.
Set channel- 1's vertical scaling to 1.00 V/div.
Set channel- 1's offset/position to approximately +1.7 V in center the
waveform on- screen.
Set the trigger level to +1.00 V (~1 division above bottom of waveform).
Set the scope's timebase to 2.000 µs/div.
Figure
25. Using the scope's default Edge triggering mode, the
2000 X-Series Oscilloscopes Advanced Training Guide
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