Delta MS250 Návod k obsluze stáhnout pdf (Strana 23)

MS-250 Mixed Signal Oscilloscope Option

Digital Triggering

Setting UpDigital Triggers

To access the Trigger setup dialogs, do one of the following:

l Choose Trigger > Trigger Setup from the menu bar

l Press the front panel Trigger Setup button

l Touch the Trigger descriptor box

The main Trigger dialog contains the trigger type selections.

Other controls will appear depending on the trigger type selection (e.g., Slope for Edge

triggers). These are described in the set up procedures for each trigger.

The trigger condition is summarized in a preview window at the far right of the Trigger

dialog. Refer to this to confirm your selections are producing the trigger you want.

Pattern Trigger

Pattern is the default trigger when the Mixed Signal option is connected to the

oscilloscope, as these users generally wish to find and trigger upon digital logic patterns.

However, a Pattern trigger can also be set on a user-defined pattern of High or Low voltage

levels in analog channels (including the External Trigger input), or a combination of digital

and analog patterns when Mixed Signal capabilities are available.

On the Trigger dialog, select Pattern trigger type. Open the Digital Pattern dialog to display

the controls.

Digital Pattern

The Logic Bus method simplifies pattern set up by utilizing digital groups and logic you

have already defined on the Digital Setup dialogs. A digital pattern is set on a single bus

(group) manually or by applying a hexadecimal value, while the remaining lines are

disabled ("Don't Care").

If you have not set up digital groups, you can set a digital pattern line by line using the

Logic method. All available lines remain active for selection.

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Delta MS250 Návod k obsluze Strana 23