Fifth tier operation - UHCI


This test is designed to show operation under moderate signal and timing stress.

Install the CleanOSBuild image using something like the following command: dd if=CleanOSBuild of=/dev/hda5 bs=8192.

Construct a hub tree as follows:

Perform all typical end-user scenarios at the ports behind the tier five hub downstream in the system. This should use a five metre cable if the Device Under Test has a removable cable.

If the device operates successfully when attached to the root hub, but does not operate correctly behind external hubs, the most likely problem is the Device Under Test drawing excessive current.

If any problems occur during this scenario, they need to be resolved prior to continuing to subsequent tests.