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Analyzer Problems
This section lists general problems that you might encounter while
using the analyzer.
Intermittent data errors
This problem is usually caused by poor connections, incorrect signal levels, or
marginal timing.
Remove and reconnect all cables and probes, ensuring that there are no
bent pins on the preprocessor interface or poor probe connections.
Check that the logic analyzer threshhold is set for TTL levels.
Use an oscilloscope to check the signal integrity of the data lines.
Clock signals for the state analyzer must meet particular pulse shape and
timing requirements. Data inputs for the analyzer must meet pulse shape and
setup and hold time requirements.
See Also
See "Capacitive Loading" in this chapter for information on other sources of
intermittent data errors.
Preprocessor Interface for the Pentium II Processor
A–3
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