RIGOL Chapter 5 Trigger
5-18 MSO4000/DS4000 User’s Guide
3. Specify the pulse polarity
Press Polarity to select the desired pulse polarity.
: positive polarity. The oscilloscope triggers on the positive runt pulse.
: negative polarity. The oscilloscope triggers on the negative runt pulse.
4. Set the pulse width qualifier
Press Qualifier, turn the multi-function knob to select the desired pulse
width qualifier and press the knob. You can also press Qualifier continuously to
switch the current pulse width qualifier.
None: do not set the pulse width qualifier.
>: the oscilloscope triggers when the width of the runt pulse is greater than
the specified minimum runt pulse width (Lower Limit).
When this qualifier is selected, press Lower Limit and turn the
multi-function knob
or the inner knob of the navigation knob to adjust
the minimum runt pulse width at a relatively smaller step or turn the outer
knob of the navigation knob to adjust the minimum runt pulse width at a
relatively larger step. The range of the minimum runt pulse width is from
4 ns to 4 s.
Note: The larger the rotation amplitude of the outer knob of the navigation
knob is, the faster the variation of the value will be. When you need to
adjust the minimum runt pulse width within a relatively larger range, this
function can help you quickly finish the setting.
<: the oscilloscope triggers when the width of the runt pulse is lower than
the specified maximum runt pulse width (Upper Limit).
When this qualifier is selected, press Upper Limit and turn the
multi-function knob
or the inner knob of the navigation knob to adjust
the maximum runt pulse width at a relatively smaller step or turn the outer
knob of the navigation knob to adjust the maximum runt pulse width at a
relatively larger step. The range of the maximum runt pulse width is from 4
ns to 4 s.
Note: The larger the rotation amplitude of the outer knob of the navigation
knob is, the faster the variation of the value will be. When you need to
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