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Keysight Infiniium 9000 Series Oscilloscopes
Evaluation Guide
6 USB
Keysight 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).
4
Connect the scope channel 2 probe to demo board D- probe loop and GND.
5
Remove all other probes and connections.
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
Содержание Infiniium 9000 Series
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