Interpreting The Data; Analysis Using Waveform - Agilent Technologies 16712A Help Manual

Chapter 1: Agilent Technologies 16712A 128K Sample Logic Analyzer

Interpreting the Data

Interpreting the Data

After you've acquired a trace with the logic analyzer, you can analyze it
in the display tools. The logic analysis system also provides filtering
and compare tools for more complex analysis.
The logic analyzer is automatically connected to the Waveform and
Listing displays when you set up a measurement. To move to that
display,
1. Select the Window menu.
2. Select the name of the analyzer whose data you want to view.
3. Choose Waveform or Listing.
Source Viewer brings up a Listing display but requires an inverse
assembler and an ADDR label.
• "Analysis Using Waveform" on page 26
• "Analysis Using Listing" on page 28

Analysis Using Waveform

Waveform is most useful for timing data. If you look at state data that
uses store qualification, you won't be able to easily see where samples
were not stored. Timing data, however, is periodic and stores all
samples and so works well with Waveform.
Example: Looking for a Missing Pattern
You can easily use the waveform tool to make timing measurements.
For example, if you were triggering when a pattern doesn't follow an
edge within a certain time (see the Measurement Examples help
volume), you would probably want to look at your data set to see if the
pattern ever did occur. This might be the case when you verifying that
the system is responding to an interrupt.
After triggering on an instance where the response did not appear
quickly enough, you might take these steps in the Waveform display:
26
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com