Agilent Technologies DSOX4USBSQ USB 2.0 Manual de servicio descargar pdf (Pagina 9)

Preparing for Signal Quality Analysis 1

DSOX4USBSQ USB 2.0 Signal Quality Analysis Application Electrical Testing Notes 9

Fixtures for Signal Quality Tests

Two different fixtures are used for Hi- Speed tests; one is for devices and

other is for hosts. See “Fixtures for Hi- Speed Signal Quality Tests" on

page 9.

One fixture is used for Full and Low Speed tests. See “Fixture for

Full/Low Speed Signal Quality Tests" on page 10.

Fixtures for Hi-Speed Signal Quality Tests

Hi- Speed testing requires one of these test fixtures:

• Device Hi- Speed Signal Quality Test Fixture, part number E2649- 66401.

This fixture can be ordered using the Agilent part number

E2649- 60001, which includes two RF SMA (m) vertical 50- ohm

termination connectors and two 4 inch USB A- to- B cables

(E2646- 61601).

• Host Hi- Speed Signal Quality Test Fixture, part number E2649- 66402.

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Agilent Technologies DSOX4USBSQ USB 2.0 Manual de servicio Pagina 9