Connect-Tek USB-16 Manuel d'utilisateur télécharger pdf (Page 30)

Host High Speed Electrical Test Procedure Revision 1.4

6. On the Host Test menu, select SUSPEND from the Port Control dropdown menu and enter the

port number. Click Execute once to place the port into suspend. The captured suspend

transition should appear as in the following figure.

Figure 18: Device Enters Suspend

7. The result contains EL_39, which is the time interval from the end of last SOF packet issued by

the host to when the device attached its full speed pull-up resistor on D+ (transition to full

speed J-state). This time should be between 3.000 ms and 3.125 ms.

8. Select the High Speed measurement tab> More > Resume measurement.

9. Set the input Signal Direction and run the measurements.

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Connect-Tek USB-16 Manuel d'utilisateur Page 30