Instructions

RIGOL Chapter 5 To Trigger the Oscilloscope
5-22 MSO5000 User's 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:
Press Type, and then rotate the multifunction knob to select "Runt". Press down
the knob to select the trigger type. Then, the current trigger setting information is
displayed at the upper-right corner of the screen, as shown in the figure below. You
can also press Type continuously to select the trigger type or enable the touch
screen to tap the desired trigger type and select it.
Source Selection:
Press 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:
Press Polarity continuously to select the pulse polarity of Runt trigger.
 Positive: triggers on the positive runt pulse.
 Negative: triggers on the negative runt pulse.
Trigger Condition:
Press When and rotate the multifunction knob to set the trigger conditions of
Runt trigger. You can also press When continuously or enable the touch screen to
select it.
 None: indicates not setting the trigger condition of Runt trigger.
 >: triggers when the runt pulse width is greater than the lower limit of pulse
width. Press Lower to set the minimum pulse width of Runt trigger.
 <: triggers when the runt pulse width is smaller than the upper limit of pulse
width. Press Upper to set the maximum pulse width of Runt trigger.
Lower Limit of
the Trigger Level
Upper Limit of the
Trigger Level
Negative Runt Pulse
Positive Runt Pulse