In corner cases, it can happen that multiple valid regions are visible in
the trace calibration diagram (shown as gaps or ‘eyes’) and a non-working
setting is recommended by the Trace Line Calibration tool. When such a
setting is selected, the trace session will fail to trigger and the analyzer
will remain in the WAITING state.
Small eyes in the calibration diagram are a result of signal integrity issues. Signal distortion can prevent the BlueBox from capturing the trace stream correctly. Refer to this article for more information.
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