How flexible and accurate is the Advanced Cable Tester v2 with polarity inversion for USB 3.1? Can I swap the differential signals and still continue the SS and SS+ eye tests?

Question from the Customer:

I have a question about using the Advanced Cable Tester v2.

The USB 3.1 specification includes handling lane bit inversion. For example, the “+” and “-“ lines in a SuperSpeed or SuperSpeed+ differential pair can be swapped.

Can you confirm that the Advanced Cable Tester v2 will properly execute the SS and SS+ eye tests on a cable if the differential signal lines in one or more SS or SS+ differential signal pairs are swapped? In other words, will the tester properly perform the SS and/or SS+ eye diagram test on a SS or SS+ lane if that lane has SSTX- connected to SSRX+ and vice versa?"

Response from Technical Support:

Thanks for your question! The Advanced Cable Tester v2 has independent receivers. Bit patterns are not a concern - the inversion in polarity will not be an issue. The cable will be testable, provided it does not have continuity problems.

Additional resources that you may find helpful include the following:

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