Connect-Tek USB-16 Instrukcja Użytkownika Pobierz pdf (Strona 24)

Host High Speed Electrical Test Procedure Revision 1.4

15. Select the Packet Parameter measurement from the High-Speed tab and configure for device

EL_55 and run the measurements. The application measures the time period of the EOP width.

The application computes the number of bits by dividing the time measured by

2.08 ns. The EOP width must be 40 bits.

Figure 15: EOP Width – SOF Packet

16. Repeat step 4 through 15 for the remaining ports.

17. Remove the Device Signal Quality test fixture and the known good device from the host

controller port under test.

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Connect-Tek USB-16 Instrukcja Użytkownika Strona 24