Technical data

Hub Hi-Speed Tests 4
Notes on USB Electrical Compliance Testing 109
Running the Tests
1 Click Run Tests.
Test Instructions
The USB automated test application will prompt you to perform these
steps:
1 On the Hub Test menu of the HS Electrical Test Tool, click [Enumerate
Bus] once.
a The hub under test should be enumerated with the hub's VID shown
together with the USB address.
b Likewise the known good device should be enumerated with its VID
shown together with the hub port in which it is connected.
2 The captured transition should be as in the figure below.