Teledyne LeCroy PETracer ML Analyzer and Exerciser User Manual - Manual (Page 133)

PETracer ML User Manual Chapter 8: Recording Options
Teledyne LeCroy
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Use External Reference Clock: If the PCI Express link under analysis uses
spread-spectrum clocking, then the Analyzer must use the external reference clock from
the host machine. If host machine does not supply a reference clock, the internal
reference clock in the Analyzer module is used instead for link analysis.
Disable Descrambling: If checked, causes the Analyzer to assume that none of the
PCI Express traffic is scrambled. By default, the Analyzer determines the scrambling
state of the devices under test.
Auto-Configure Lane Polarity: Lets the Analyzer determine lane polarity.
Base Spec 1.0 Rev Compatibility Mode (Advanced Mode): This option causes the
Analyzer to conform to the PCI Express 1.0 Specification.
Swap Recording Channels (Advanced Mode): Swaps upstream/downstream
assignments. Normally, the software makes upstream and downstream assignments
based on Configuration Requests within the CATC Trace. Sometimes these requests are
not captured. You can manually re-assign channels using this checkbox.