Technical data

Advanced Triggering, Search & Navigation, and Segmented Acquisition Labs 3
4000 X-Series Oscilloscopes Advanced Training Guide 61
Your scope’s display should now look similar to Figure 36. Using the
scope’s default rising edge type trigger, we can see pulses that have
various amplitudes. The pulses that have the lower amplitudes are “runt”
pulses. This particular data stream includes both positive runts (pulses
that fail to meet a minimum high level) and negative runts (pulses that fail
to meet a minimum low level). Let’s now set up the scope to trigger on
just positive runt conditions.
9 Press the [Trigger] front panel key and select Runt type triggering.
10 Tap the Level Select softkey to select Low.
11 Turn the trigger level knob to set the lower trigger level threshold to be
approximately 1 division above the bottom of the waveform.
12 Tap the Level Select softkey to select High; then turn the Trigger Level
knob to set the upper trigger level threshold to be approximately 1
division below the top of the waveform.
Figure 36 Scope display reveals various amplitude pulses while triggering on any rising
edge.