Technical data

Hub Hi-Speed Tests 4
Notes on USB Electrical Compliance Testing 91
Configuring the Tests
Connecting the Equipment
The USB automated test application will prompt you to perform these
connection steps:
1 Connect the E2649- 66401 (E2645- 66507 if you are using the old fixture)
Device Hi- Speed Signal Quality test fixture [INIT PORT] into a
high- speed capable port of the test bed. Do not apply 5V to the test
fixture.
2 Connect the test fixture [TEST PORT] into B receptacle of the upstream
facing port under test of the hub, using the 4" USB cable. Apply power
to the hub.
3 Attach the Agilent 113xA differential probe to D+/D- of TP2 on the test
fixture, using a damped header adapter (the header adapter is only
needed if you are using the old test fixture).
4 If you are using the new fixture, please terminate the SMA connectors
with 50 Ohm terminators.
5 Check I have completed these instructions.