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Figure 8.27 I2C Trigger Setting Menu

After a trigger type is selected, the current trigger setting information (including the

trigger type, source, and level) is displayed in the trigger information label at the top

of the screen, as shown in the figure below. The information will change based on the

trigger settings.

Source Selection

Click or tap the drop-down buttons of SCL and SDA to select CH1-CH4 or D0-D15 to

specify the sources of SCL and SDA respectively. For details, refer to descriptions in

Trigger Source

. The selected trigger source is indicated in the trigger information

label at the top of the screen.

Only when you select the channel that has signal inputs as the trigger source, can you

obtain a stable trigger.

Trigger Condition

Set the desired trigger condition in the

When item.

• Start: triggers when SDA data transitions from high level to low level while SCL

is high level.

• Stop: triggers when SDA data transitions from low level to high level while SCL is

high level.

• Restart: triggers when another start condition occurs before a stop condition.

Triggering the Oscilloscope

Rigol DHO924 User Manual

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