Technical data

Hub Hi-Speed Tests 4
Notes on USB Electrical Compliance Testing 79
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 (E2545- 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 Agilent 113xA 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.