Agilent Technologies DSOX4USBSQ USB 2.0 Servisní příručka stáhnout pdf (Strana 10)

10 DSOX4USBSQ USB 2.0 Signal Quality Analysis Application Electrical Testing Notes

1 Preparing for Signal Quality Analysis

This fixture can be ordered using the Agilent part number

E2649- 60002, which includes two RF SMA (m) vertical 50- ohm

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

(E2646- 61601).

These Hi-Speed Signal Quality test fixtures are powered by a 5 V power

supply, which can be ordered using Agilent part number 0950- 2546.

Equivalent power supplies can also be used.

Older Versions of

the Hi-Speed

Signal Quality

Test Fixtures

Older versions of the Hi- Speed signal quality test fixtures exist and may

be used:

• Device Hi- Speed Signal Quality Test Fixture, part number E2645- 66507.

• Host Hi- Speed Signal Quality Test Fixture, part number E2645- 66508.

When using these older fixtures with the 1131A, 1133A, or 1134A

InfiniiMax differential probes, you also need the Agilent header adapter,

part number 01131- 68703. This header adapter is included with E2669A

and E2678A (purchased after October 2003).

Fixture for Full/Low Speed Signal Quality Tests

Full and Low Speed testing require this test fixture:

• E2646A/B SQiDD board test fixture.

NOTE

The Hi-Speed fixture part numbers E2649-66401 and E2649-66402 are provided for

identification purposes only and cannot be used for ordering.

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Agilent Technologies DSOX4USBSQ USB 2.0 Servisní příručka Strana 10