Hi,

With using this PCIE/USB type c switch HD3SS3212RKST, we observed the Preset test is fail but only P4 is passing.

File Name Preset                                                                                                     Pass / Fail Vb (mV) Preshoot (dB) De-emphasis (dB) CP Preset CP Lane Date Time
c:\Users\Tek_Local_Admin\Desktop\Libby\AIMB-218\0423\_P04_d___Math2.wfm P4 Pass 860.862404108 0.000000000000 0.000000000000 4 0 04/23/20 15:08:51
c:\Users\Tek_Local_Admin\Desktop\Libby\AIMB-218\0423\_P01_d___Math2.wfm P1 Fail 807.913988829 0.000000000000 -0.551372273417 3 0 04/23/20 15:08:51
c:\Users\Tek_Local_Admin\Desktop\Libby\AIMB-218\0423\_P00_d___Math2.wfm P0 Fail 813.080281019 0.000000000000 -0.496006259386 0 0 04/23/20 15:08:51
c:\Users\Tek_Local_Admin\Desktop\Libby\AIMB-218\0423\_P09_d___Math2.wfm P9 Fail 872.978508472 -0.121396210764 0.000000000000 9 0 04/23/20 15:08:51
c:\Users\Tek_Local_Admin\Desktop\Libby\AIMB-218\0423\_P08_d___Math2.wfm P8 Fail 957.312405109 -0.651501158361 0.417277060601 7 255 04/23/20 15:08:51
c:\Users\Tek_Local_Admin\Desktop\Libby\AIMB-218\0423\_P07_d___Math2.wfm P7 Fail 959.964483976 -1.30995170305 1.21111362060 8 255 04/23/20 15:08:51
c:\Users\Tek_Local_Admin\Desktop\Libby\AIMB-218\0423\_P05_d___Math2.wfm P5 Fail 835.025012493 0.264685139042 0.000000000000 5 0 04/23/20 15:08:51
c:\Users\Tek_Local_Admin\Desktop\Libby\AIMB-218\0423\_P06_d___Math2.wfm P6 Fail 912.409573793 -0.505121841116 0.000000000000 6 0 04/23/20 15:08:51
c:\Users\Tek_Local_Admin\Desktop\Libby\AIMB-218\0423\_P03_d___Math2.wfm P3 Fail 888.134270906 0.000000000000 0.270897743356 3 0 04/23/20 15:08:51
c:\Users\Tek_Local_Admin\Desktop\Libby\AIMB-218\0423\_P02_d___Math2.wfm P2 Fail 825.576990843 0.000000000000 -0.363523221492 2 0 04/23/20 15:08:51
c:\Users\Tek_Local_Admin\Desktop\Libby\AIMB-218\0423\_P10_d___Math2.wfm P10 Fail 886.592030525 0.000000000000 0.255801631795 10 0 04/23/20 15:08:51

But for the overall compliance test, we still get a very clean eye for pcie and pass in the test. 

I saw in the forum that some similar problem was asked but is for DS80PCI800. May i know do you guys ever see the same problem with this switch HD3SS3212RKST?