The view’s trigger is visualized on the chart by a little circle with a dot inside. If the trigger can be moved, trigger markers appear at the side of the chart, near the base and value axes. The trigger can be moved by dragging these markers.

There are four triggering slopes:

Edge type	Description
Rising	Trigger can only fire on the rising edges of the trigger signal
Falling	Trigger can only fire on the falling edges of the trigger signal
Either	Trigger can fire on both falling and rising edges of the trigger signal.
Alternating	If the trigger previously fired on the rising/falling edge, it will fire the next time on the falling/rising edge.

There are four trigger modes:

Trigger mode	Description
Normal	Trigger fires every time the trigger signal passes the trigger value
Single	Trigger fires when the trigger signal passes the trigger value for the first time.
Auto	Like normal mode, but also fires when a time-out expires.
Auto level	Like auto mode, but the trigger value is set to the trigger signal’s center value

The trigger mode and slope can be set in the toolbar or in the “properties” dialog of the view.

To enable the trigger, click the “Play” button in the toolbar. To disable the trigger, click the Pause button . If the trigger is disabled, it will not scan incoming samples.