Keysight Technologies U4301 User Manual page 52

5 Tuning the Analyzer for a Specific DUT
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If you are getting excessive errors in the captured traces even after a successful completion
of Fine Tune Previous Results run with all lanes converged, then you can use the Long Fine
Tune option. This option is identical to the Fine Tune Previous Results option but takes more
time in running the tuning test iterations as compared to Fine Tune Previous Results. Long
Fine Tune, therefore, requires considerably longer time to complete the tuning process than
the Fine tune but can reduce the trace errors resulting from inadequate tuning.
The Long Fine Tune option is not recommended for use if all the lanes are not converged.
Click the icon displayed with the Output PTU File field to browse and specify the path and
location of the tuning file that will be generated after the fine tuning process.
Click Perform Tune.
The fine tuning process starts and the fine tuning progress is displayed with a progress bar.
Keysight U4301 PCIe Gen3 Analyzer User's Guide