RIGOL MSO/DS2000A Series - Manual (Page 112)

RIGOL Chapter 5 To Trigger the Oscilloscope
5-26 MSO2000A/DS2000A User’s Guide
Pattern Trigger
Identify a trigger condition by looking for a specified pattern. This pattern is a logical
“AND” combination of the channels. Each channel can be set to high (H), low (L),
don’t care (X), rising edge or falling edge. When a rising or falling edge is specified,
the oscilloscope will trigger at the edge specified if the input signals for other
channels are consistent with the pattern currently set. If no edge is specified, the
oscilloscope will trigger on the last edge that makes the pattern true. If all the
channels in the pattern are set to “Don’t Care”, the oscilloscope will not trigger.
…
L
H
(CH1-CH2 or D0-D15)
…
(CH1-CH2 or D0-D15)
Figure 5-7 Pattern Trigger
Trigger Type:
Press Type, rotate
to select “Pattern” and press down . At this point, the
trigger setting information is displayed at the upper right corner of the screen. For
example, . The trigger type is pattern trigger; the current trigger
source is CH1; the trigger level is 1.84 V.
Source Selection:
Press Source to open the signal source list and select CH1, CH2 or any channel of
D0-D15. The current trigger source is displayed at the upper right corner of the
screen.
Pattern Setting:
Press Code to set the pattern of the current source. 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.