Technical data

160 Notes on USB Electrical Compliance Testing
5 Host Hi-Speed Electrical Tests
Configuring the Tests
Connecting the Equipment
The USB automated test application will prompt you to perform these
connection steps:
1 Replace the E2649- 66404 (E2645- 66506 if you are using the old fixture)
Disconnect test fixture with the E2649- 66402 (E2645- 66508 if you are
using the old fixture) Host Hi- Speed Signal Quality test fixture. Do not
apply 5V to the test fixture.
2 Connect the E2697A with 10073C passive probe or the 1156A active
probe on Channel 2 to the D- pin at TP2 of the E2649- 66402
(E2645- 66508 if you are using the old fixture) Host Hi- Speed Signal
Quality test fixture.
3 Connect the E2697A with 10073C passive probe or the 1156A active
probe on Channel 3 to the D+ pin at TP2. D+ on TP2 is the pin closest
to the USB connector.
4 Connect both probe grounds to leads COM (leads TP5 on the old
fixture).
5 Connect a known good Hi-Speed device into the [INIT PORT] of the test
fixture, using the 5- meter USB cable.
6 Connect the [TEST PORT] on the fixture to the port under test, using
the 4" USB cable.
7 Apply power to the known good Hi- Speed device.
8 If you are using the new fixture, please terminate the SMA connectors
with 50 Ohm terminators.