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Rotate the Trigger LEVEL knob to adjust the trigger level or threshold level. Please
refer to descriptions in "
Trigger LEVEL/Threshold Level
". The current trigger level/
threshold level is displayed at the upper-right corner of the screen.
8.7.8 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.
Lower Limit of the
Trigger Level
Upper Limit of the
Trigger Level
Negative Runt Pulse
Positive Runt Pulse
Figure 8.9 Runt Trigger
Trigger Type:
Press Type, and then rotate the multifunction knob to select "Runt". Press down
the knob to select it. 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 or enable the touch screen to 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 Wave.
Polarity:
Press
Polarity to select the polarity of the Runt trigger.
• Positive: triggers on the positive runt pulse.
•
Negative: triggers on the negative runt pulse.
To Trigger the Oscilloscope
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