Technical data

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Agilent Infiniium 9000 Series Oscilloscopes
Evaluation Guide
6
USB
Agilent offers a USB compliance package as well as a USB protocol
triggering and decode application. The compliance package tests for
signal conformance to USB-IF industry standard while the protocol
triggering and decode application targets rapid debug.
For this exercise, a USB protocol application option license is
required.
USB is a differential serial bus and can run at low-, full-, or high-speed
data rates. Example devices for each:
This lab includes examples from each speed category.
USB Low-Speed Capture
Make connections and perform initial setup:
1 Connect the demo board USB-B port to your 9000 Series
oscilloscope using a USB A to B cable.
2 Plug mouse into USB-A port on the lower right side of the demo
board.
The mouse will create USB low-speed traffic that the scope probes
will monitor.
3 Connect the scope channel 1 probe to demo board D+ probe loop
and GND (on the right-side of the demo board).
Data rate Devices Required probes
Low speed (1.5 Mbps) USB mouse or USB keyboard 2 single-ended
Full speed (12 Mbps) Older USB hub 2 single-ended
High-speed(480 Mbps) Current thumb drives or USB
mass storage
1 differential