HP 16500C - Manual (Page 101)

No trace list display
If there is no trace list display, it may be that your analysis specification is not
correct for the data you want to capture, or that the trace memory is only
partially filled.
Check your analysis sequencer 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.
If You Have a Problem
No trace list display
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