Hub Downstream Signal Quality Testing
5
DSOX4USBSQ USB 2.0 Signal Quality Analysis Application Electrical Testing Notes
71
Hub Downstream Hi-Speed Compliance Test Packets
To set up the Host computer to transmit compliance test packets, perform
these steps:
1
Invoke the HS Electrical Test Tool software on the Hi- Speed Electrical
Test Bed computer. Select
Hub
and click the
TEST
button to enter the
Hub Test dialog box.
2
In the Hub Test dialog box, click the
Enumerate Bus
button once.
The hub under test should be enumerated with the hub's VID shown
together with the USB address.
3
Select
TEST_PACKET
from the
Port Control
drop down menu.
4
Enter the port number of the hub port being tested.
5
Click
EXECUTE
.
