Power Delivery and Loopback test on USB port

[p_pham]

I have a USB board need to test the Power Delivery + loopback test on USB_Downstream_Port_0 and USB_Downstream_Port_1
as diagram below




I am planning to use PM 125 (PD) and PM065 (Loopback) to run the test. My question is how do I conncet from
my test PC to the USB board and to the PM125 tester? How many PM 125 and PM065 do I need to test both USB ports.

The connection with assumption that the test will fully automate with no cable swapping during test.

Thanks in advance for your help and suggestion.

[David (PassMark)]

Can you give more details of the "USB board". It is a computer / PC? What type? What O/S? Or is it just a charger? If it is just a charger, then data loopback isn't possible as chargers don't do data transfer.

Maybe some photos of the setup would help.

The upstream / downstream differences in your diagram also aren't clear. Are you saying your USB ports are somehow uni-directional (i.e. not standard USB ports?)

If you want full automation, can you write code?