Agilent Technologies N5416A Manual de servicio descargar pdf (Pagina 149)

Host Hi-Speed Electrical Tests 5

Notes on USB Electrical Compliance Testing 149

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 ([TEST PORT]) into B

receptable of a known good hi-speed hub, using the 4" USB cable.

a Apply power to the known good hub. Do not apply 5V to the test

fixture.

2 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).

3 Connect the test fixture ([INIT PORT]) into the host controller under

test, using USB cable.

4 If you are using the new fixture, please terminate the SMA connectors

with 50 Ohm terminators.

5 Check I have completed these instructions.

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Agilent Technologies N5416A Manual de servicio Pagina 149