Agilent Technologies N5416A Wartungshandbuch PDF herunterladen (Seite 88)

88 Notes on USB Electrical Compliance Testing

4 Hub Hi-Speed Tests

Running the Tests

1 Click Run Tests.

Test Instructions

1 In the Hub Test menu of the HS Electrical Test Tool, click [Enumerate

Bus] once and verify the hub successfully enumerates.

2 Attach the [TEST PORT] of the test fixture to the port under test.

3 From the Port Control window of the Hub Test menu, select

TEST_FORCE_ENABLE.

4 Enter the port number and click [EXECUTE] once and ensure

operation is successful in the Status Window.

5 Click the Disconnect Notify check box to monitor the disconnect status

in the Status Window.

6 Click OK to close the Test Instructions dialog.

EL_37 Disconnect Detect Test At 525mV Threshold

The USB automated test application will prompt you to answer the

question “Does the Status Window display Disconnect Event Detected?”

EL_36 Disconnect Detect Test At 625mV Threshold

The USB automated test application will prompt you to: Set the Test

switch of the E2645- 66506 Disconnect test fixture to the Normal position

and verify the yellow TEST LED is not lit.

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Agilent Technologies N5416A Wartungshandbuch Seite 88