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Trigger Type

Click or tap the drop-down button of Type to select "RS232".

Figure 8.25 RS232 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

Source drop-down button to select CH1-CH4 or D0-D15. For details,

refer to

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.

Polarity

Select the polarity of data transmission in the

Polarity item. It can be set to "Positive"

or "Negative" .

Trigger Condition

Set the desired trigger condition in the

When item.

Triggering the Oscilloscope

DHO900 User Guide

Rigol DHO914 User Manual

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