Chapter 6: Concepts

Understanding Logic Analyzer Triggering

1.If DATA = 005E then Trigger

Else If ADDR in range 5000 to 6FFF then Store Sample

Go to 1

Else If ADDR not in range 5000 to 6FFF then Don't Store Sample

Go to 1

Alternatively, if the default storage is set to “Store Everything”, use the following:

1.If DATA = 005E then Trigger

Else If ADDR not in range 5000 to 6FFF then Don't Store Sample

Go to 1

In summary, Sequence Level Storage always overrides the Default Storage, but only for the conditions specifically mentioned in the Sequence Level Storage. You must be very careful that you account for the interaction between Default Storage and Sequence Level Storage.

Next: “Strategies for Setting Up Triggers” on page 251

Strategies for Setting Up Triggers

“Trigger Functions” on page 251

“Setting Up Complex Triggers” on page 254

“Document Your Trigger Sequences” on page 254

Trigger Functions

While setting up logic analyzer triggers can be difficult, trigger functions can greatly simplify the process. Trigger functions are commonly-needed building blocks that can be combined to set up a trigger. Because the functions cover most common triggers, you can set up your trigger simply by selecting the appropriate function and filling in the data. The Agilent Technologies 16715A logic analyzer trigger user interface is shown in the following figure. Note that trigger functions are prominently located at the top of the screen.

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Agilent Technologies 16760A manual Strategies for Setting Up Triggers, Trigger Functions, 251