Teledyne LeCroy QPHY-USB - Manual (Page 7)

QPHY-USB Software Option
QPHY-USB Operator’s Manual Rev F
7
Hub tests
• HS Signal Quality (Upstream/Downstream)
•
HS Upstream Packet Parameters
• HS Upstream Chirp Timing
•
HS Upstream Suspend / Resume / Reset
•
HS Disconnect
• HS J and K Voltages (Upstream/Downstream)
• HS Upstream Repeater
•
HS Downstream Repeater
• HS Upstream Receiver Sensitivity
•
FS Signal Quality (Upstream/Downstream)
• LS Signal Quality (Upstream/Downstream)
• Inrush current
•
Drop
•
Droop
• Back-Voltage
In the previous tests, the J and K Voltages tests are performed with the use of a digital voltmeter. This test is
performed for Hosts, Devices, and Hubs.