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Troubleshooting the Logic Analyzer
Analyzer Problems
Capacitive loading
Excessive capacitive loading can degrade signals, resulting in incorrect
capture by the analysis probe, or system lockup in the microprocessor.
All analysis probes add additional capacitive loading, as can custom
probe fixtures you design for your application. To reduce loading,
remove as many pin protectors, extenders, and adapters as possible.
Careful layout of your target system can minimize loading problems
and result in better margins for your design. This is especially
important for systems that are running at frequencies greater than 50
MHz.
No trace list display
If there is no trace list display, it may be that your trigger specification
is not correct for the data you want to capture, or that the trace
memory is only partially filled.
❏Check your trigger specification to ensure that it will capture the events of
interest.
❏Try stopping the analyzer; if the trace list is partially filled, this should
display the contents of trace memory.