Chapter 5 To Trigger the Oscilloscope RIGOL
DS1000Z User’s Guide
Duration Trigger
Identify a trigger condition by looking for the duration of a specified pattern. This
pattern is a logical “AND” combination of the two channels. Each channel can have a
value of high (H), low (L) or don’t care (X). The instrument triggers when the
duration (△T) of this pattern meets the preset time, as shown in the figure below.
Trigger Type:
Press Type to select “Duration”. 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-CH4 as the channel source of H, L or X. The current
signal source is displayed at the upper right corner of the screen.
Pattern Setting:
Press Code to set the pattern of the current channel. At this point, the pattern
setting area (as shown in the figure below) is displayed at the bottom of the screen.
: set the pattern of the channel selected to “H”, namely the voltage level is
higher than the threshold level of the channel.
: set the pattern of the channel selected to “L”, namely the voltage level is
lower than the threshold level of the channel.
: set the pattern of the channel selected to “Don’t Care”, namely this channel is
not used as a part of the pattern. When both the channels in the pattern are set
to “Don’t Care”, the oscilloscope will not trigger.