Technical data

Hub Hi-Speed Tests 4
Notes on USB Electrical Compliance Testing 83
Configuring the Tests
Connecting the Equipment
The USB automated test application will prompt you to perform these
connection steps:
1 Attach the 5V power supply to J5 of the E2649- 66402 (E2645- 66508 if
you are using the old fixture) Host Hi- Speed Signal Quality test fixture.
Set the Test switch to the TEST position. Verify green Power LED and
yellow test LED are both lit.
2 Attach the differential probe to TP2 of the test fixture, using the header
adapter (the header adapter is only needed if you are using the old test
fixture). Ensure the + polarity on the probe lines up with D+ on the
fixture, located nearest to the USB connector.
3 Connect the upstream port of the hub to a high- speed root port of the
test bed computer.
4 Connect the [TEST PORT] of the test fixture into the down stream
facing port under the test of the hub. Apply power to the hub.
5 If you are using the new fixture, please terminate the SMA connectors
with 50 Ohm terminators.
6 Check I have completed these instructions.