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RIGOL Chapter 5 To Trigger the Oscilloscope
5-22 DS8000-R User Guide
Runt Trigger
This trigger mode is used to trigger pulses that pass through one trigger level but fail
to pass through another trigger level, as shown in the figure below.
Figure 5-9 Runt Trigger
Trigger Type:
Click Type to select "Runt". Then, the current trigger setting information is displayed
at the upper-right corner of the screen, as shown in the figure below.
Source Selection:
Click Source to switch the trigger source and select CH1-CH4. For details, refer to
descriptions in "Trigger Source". The current trigger source is displayed at the
upper-right corner of the screen.
Note: Only when we select the channel (that has been input with signals) as the
trigger source, can we obtain a stable trigger.
Polarity:
Click Polarity continuously to select the pulse polarity of Runt trigger.
âš«
Positive: triggers on the positive runt pulse.
âš«
Negative: triggers on the negative runt pulse.
Trigger Condition:
Click When to set the trigger conditions of Runt trigger.
âš« None: indicates not setting the trigger condition of Runt trigger.
âš« >: triggers when the runt pulse width is greater than the lower limit of pulse
width. Click Lower to set the minimum pulse width of Runt trigger.
âš« <: triggers when the runt pulse width is smaller than the upper limit of pulse
width. Click Upper to set the maximum pulse width of Runt trigger.
âš« <>: triggers when the runt pulse width is greater than the lower limit and
smaller than the upper limit of pulse width. Click Upper to set the maximum
pulse width of Runt trigger. Click Lower to set the minimum pulse width of Runt
trigger.
Lower Limit of
the Trigger Level
Upper Limit of the
Trigger Level
Negative Runt Pulse
Positive Runt Pulse
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