Delta MS250 Manuel de l'opérateur télécharger pdf (Page 31)

MS-250 Mixed Signal Oscilloscope Option

Qualified Trigger

Qualified arms the trigger on the A event, then fires on the B event. In Normal trigger mode,

it automatically resets after the B event. The options for the B event depend on the type of

A event. You may apply additional Holdoff by time or number of events.

On the Trigger dialog, select Qualified or MultiStage > Qualified trigger type to display the

controls, depending on your oscilloscope.

Then, on the Qualified dialog choose the A and B events.

Besides an Edge or Pattern trigger, two special conditions may be selected as the arming

("A") event:

l State, voltage measured above or below a threshold Level.

l PatState, a pattern that persists over a user-defined number of events or time. Like

Pattern triggers, PatState events may be analog voltage patterns, digital logic

patterns, or a mix of both, depending on the oscilloscope's capabilities.

NOTE: On a standard oscilloscope, Pattern and PatState events will default to the analog

pattern setup dialog. On a Mixed-Signal oscilloscope, Pattern and PatState events will

default to the digital pattern setup dialog.

Once you've selected the A and B events on the Qualified dialog, set up the conditions on

the respective sub-dialogs exactly as you would a single-stage trigger.

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Delta MS250 Manuel de l'opérateur Page 31