Technical data

Low and Full Speed Tests 7
Notes on USB Electrical Compliance Testing 205
Hub Downstream Signal Quality Test
Hub Downstream Low Speed Test
Equipment Used
Selecting the Tests
Tabl e 3 8 Equipment Used in Hub Downstream Low Speed Signal Quality Test
Quantity Item Description/Model
1 Oscilloscope Agilent 5485xA Series, 80000 or 90000A Series, 54831B/D,
or 54832B/D
2 Passive or active probes For 5485x, 80000 and 90000A Series oscilloscopes:
• Agilent E2697A with 10073C, or 1156A
For 54831B/D and 54832B/D oscilloscopes:
• Agilent 1165A
1 Host test bed computer Any computer with hi-speed USB ports
1 SQiDD board Agilent E2646A/B
1 low speed USB device Logitech mouse, P/N 830311-1000, Model #: M-BB48
5 USB self-powered hubs Any listed on USB-IF web site
5 5 meter USB cables Any listed on USB-IF web site