Technical data

84 Notes on USB Electrical Compliance Testing
4 Hub Hi-Speed Tests
Running the Tests
1 Click Run Tests.
Test Instructions
EL_47 Data Eye and Mask Test
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.
2 Select TEST_FORCE_ENABLE from the Port Control drop down menu.
3 Enter the port number of the hub port being tested and click
[EXECUTE] once to force- enable the hub port under test.
4 Select PARENT TEST_PACKET from the Hub Command drop down
menu and click [EXECUTE].