Technical data

146 Notes on USB Electrical Compliance Testing
5 Host Hi-Speed Electrical Tests
3 Click OK to close the Test Instructions dialog.
Test Instructions, Part 2
The USB automated test application will prompt you to perform these
steps:
1 Connect the [TEST PORT] of the E2649- 66402 Host Hi- Speed Signal
Quality test fixture (E2645- 66508 if you are using the old fixture) into
the port under test of the host controller, using the 4" USB cable. The
host controller here refers to the Hi- speed Electrical Test Bed Computer
that has the HS Electrical Test Tool on it.
2 Select TEST_PACKET from the Port Control drop down menu.
3 Enter the port number of the port under test and click [EXECUTE].
This forces the port under test to continuously transmit test packets.
You should see the transmitted test packet on the oscilloscope as below.