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5 To Trigger the Oscilloscope
RIGOL
Pulse Trigger
Trigger on the positive or negative pulse with a specified width.
Trigger Type:
Press Type to select “Pulse”. At this point, the trigger setting information as shown in
the figure below is displayed at the upper right corner of the screen.
Source Selection:
Press Source to select CH1 to CH4 or EXT as the Trigger Source. The current
trigger source is displayed at the upper right corner of the screen.
Note: select channel with signal input as trigger source to obtain stable trigger.
Pulse Condition:
Press When to select the desired pulse condition.

: trigger when the positive pulse width of the input signal is greater than
the specified Pulse Width Setting.

: trigger when the positive pulse width of the input signal is lower than the
specified Pulse Width Setting.

: trigger when the positive pulse width of the input signal is greater than
the specified Lower Limit of Pulse Width and lower than the Upper Limit of
Pulse Width.

: trigger when the negative pulse width of the input signal is greater than
the specified Pulse Width Setting.

: trigger when the negative pulse width of the input signal is lower than
the specified Pulse Width Setting.

: trigger when the negative pulse width of the input signal is greater than
the specified Lower Limit of Pulse Width and lower than the Upper Limit of
Pulse Width.
Pulse Width Setting:
In this oscilloscope, positive pulse width is defined as the time difference between
the two crossing points of the trigger level and positive pulse as shown in the figure
below.
DS4000 User’s Guide
5-11