User Manual

5 To Trigger the Oscilloscope RIGOL
DS4000 User’s Guide
5-25
SPI Trigger
Trigger on the data pattern on the specified edge. When using SPI trigger, you need
to specify the SCL, SDA and CS data sources. Below is the sequence chart of SPI bus
data transmission.
Trigger Type:
Press Type to select “SPI”. 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 SCL, SDA and CS to specify the data sources of SCL, SDA and CS respectively.
CH1 to CH4 can be selected as the Trigger Source. The current trigger source is
displayed at the upper right corner of the screen.
Trigger Condition:
Press When to select the desired trigger condition.
 CS: trigger when the CS channel is “High” or “Low”. After this trigger condition is
selected, press Mode to select “High” or “Low”. Note that CS is valid only when