Agilent Technologies N5416A Manuale di Servizio Pagina 132

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132 Notes on USB Electrical Compliance Testing
4 Hub Hi-Speed Tests
The USB automated test application will prompt you for the following
voltage measurements:
EL_9 SE0_NAK Test
The USB automated test application will prompt you to perform these
steps:
1 Return the Test switch of the test fixture to the NORMAL position.
2 Cycle the hub power to restore the hub to normal operation. On the
Hub Test menu of the HS Electrical Test Tool, click [Enumerate Bus]
once.
3 Select TEST_SE0_NAK from the Hub Command drop down menu. Click
[EXECUTE] once to place the hub into TEST_SE0_NAK test mode.
4 Switch the test fixture into the TEST position.
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